Mantle Plumes pp 241-322 | Cite as

The Quaternary Volcanic Fields of the East and West Eifel (Germany)

  • Hans-Ulrich Schmincke

Abstract

The two Quaternary volcanic fields in the Eifel region of Germany (West Eifel Volcanic Field - WEVF; East Eifel Volcanic Field - EEVF) resemble each other in their temporal, spatial, structural and compositional evolution but also differ significantly in several parameters. Most volcanoes in both fields erupted foiditic potassic (K2O/Na2O >1) lavas with phenocrystic phlogopite and microlitic leucite being mineralogically most diagnostic as are the corresponding major and trace element characteristics. Volcanoes are dominantly scoria cones, of which about half erupted lava flows, and maars, their formation being partly governed by magma-water interaction. Phreatomagmatic eruptive activity reflecting variable degrees of magma/water mixing occurred during the growth of many scoria cones especially during the initial growth stage.

Volcanic activity in the WEVF started slowly less than 700 ka ago after the Rhenish shield had begun an accelerated phase of uplift with highly silica-undersaturated foiditic magmas near Ormont at the border with Belgium in the NW and peaked in the central part of the field between ca. 600 and 450 ka. Following a subsequent lull in activity, volcanism migrated to the SE, the frequency of volcano formation increasing during the past <100 ka, the youngest eruption having occurred at 11 ka. Most lavas are mafic with rare intermediate and local small highly evolved centers in the eastern central part of the field. Magma fractionation at high pressure, such as near the crust/mantle boundary, is reflected in common green-core clinopyroxene phenocrysts in many types of lavas - in both fields - and high temperature overprinting, partial melting and metasomatism of lower/middle crustal granulites. Very mafic and much less silica-undersaturated sodic olivine nephelinites and relatively LILE-poor sodic basanites with groundmass plagioclase, both being distinctly less isotopically enriched than the foidites, erupted in the southeastern WEVF during the past <50 ka side-by-side with foidites.

Distinct suites of ultramafic xenoliths, each with many variants, are recognized: (1) depleted and enriched peridotites (lherzolites, dunites, harzburgites and wehrlites) comprising several groups (highly deformed porphyroclastic xenoliths in the periphery and high-temperature recrystallized anhydrous types and metasomatized types near the center) and (2) cumulate- textured hornblendites, glimmerites and pyroxenites. The fact that clastic maar deposits are especially rich in peridotite and other ultramafic xenoliths is explained by xenolith-rich mafic volatile-rich magmas rising from greater depth coupled with high expulsion speeds during phreatomagmatic explosions. The near-absence of peridotite xenoliths and the abundance of clinopyroxene-, phlogopite- and amphibole-rich ultramafic cumulates containing remnants of peridotites in maar deposits in the southeastern part of the WEVF is probably due to more efficient filtering and dissolution of mantle peridotite fragments in subcrustal to lower crustal magma reservoirs in which the cumulates formed.

Volcanic activity in the EEVF started about 460 ka ago or slightly earlier. As in the WEVF, early activity in the western part of the EEVF is dominated by mafic foiditic lava compositions. A prominent phonolitic complex in its center (Rieden, ca. 430-360 ka) is represented by intrusions, domes, ignimbrites, and widespread fallout tephra. A younger eastern subfield beginning with the partly trachytic highly evolved phonolitic Wehr crater complex at about 215 ka ago was followed soon by the emplacement of potassic basanitic to tephritic scoria cones chiefly in the Neuwied tectonic basin. Volcanism extended east as far as Rhine River and south to close to the Moselle. Most EEVF basanite volcanoes formed ca. 215-190 ka ago. These lavas differ from the young sodic basanites in the WEVF by higher concentrations of Al, K, Ba, Rb and lower concentrations of Fe, Na, P, Sr, LREE, Zr/Nb ratios exceeding 3 for a given Mg#. The EEVF basanites are also less mafic and commonly evolved to early-erupted tephrite, volcanic edifices being generally larger than those in the WEVF. Volcanic activity was minor until 12,900 years BP when the phonolitic Laacher See Volcano (LSV) erupted >6 km3 magma, mostly during a few days, resulting in a Plinian fallout tephra layer recognized from southern Sweden to northern Italy. This is the most important very late Pleistocene stratigraphic marker bed in Central Europe. The partially evacuated strongly zoned reservoir was located ca. 5–8 km beneath the surface. The eruption, like many scoria cones in both fields, started phreatomagmatically. Rhine River was dammed during the eruption by massive tephra accumulation, forming a 20 m deep lake. The uncontrolled rupture of the tephra dam generated flood waves recognizable in deposits at least as far north as Bonn. The sulfur-rich LSV magma coupled with eruption columns at least 25 km high probably impacted climate significantly in the northern hemisphere.

The degree of melting based on CaO/Al2O3 ratios is lowest in the melilite nephelinites that abound in the WEVF but are rare in the EEVF (resembling EM 1) and highest for the basanites in both fields, possibly also reflected in their higher eruptive volume and more common differentiation to intermediate lavas. At least three compositionally distinct mantle domains can be distinguished from each other in the Eifel fields based on available radiogenic Sr-, Nd-, and Pb- ratios of mafic lavas and many incompatible element concentrations and ratios. The dominant foidites in both fields and especially the potassic EEVF basanites are the most radiogenic magmas compared to other Cenozoic volcanic fields in central Europe. These magmas may have been derived from the base of the metasomatized lithosphere. The spatial overlap of the highly alkalic Quaternary magmas, erupted during the early/main stages in both fields, with the southern part of the Eocene Hocheifel field suggests that the geologically young metasomatism that may have affected the base of the lithosphere could have largely resulted from Tertiary magmatic activity. The lack of indicators for metasomatism in the much more widespread Tertiary Eifel lavas is difficult to explain otherwise. The much less radiogenic young basanites and even less radiogenic olivine nephelinites of the WEVF fall close to the broad field of Tertiary lavas in central Europe and may have been derived from a similar possibly asthenospheric mantle source.

In the WEVF, a foiditic magma source was reactivated during the past ca. 100 ka or less. Simultaneously, magmas from a new compositional mantle domain supplied sodic basanites and olivine nephelinites to the surface during the past about 50 ka erupting in the southeastern part of the field side-by-side with foiditic lavas. The two compositionally distinct but spatially adjacent melting domains were probably stacked vertically. In the EEVF, the compositional mantle domain supplying foiditic magmas to the surface terminated between about 350 and 215 ka ago, after which time compositionally different less foiditic but more potassic and enriched basanites and minor tephrites erupted in the eastern subfield, locally evolving to voluminous phonolite. The youngest volcano in the Eifel, Ulmener Maar of extremely LILE-enriched intermediate composition, formed about 11,000 a BP, 2000 years after LSV erupted.

Mantle source regions beneath the fields are chemically distinct on different scales, larger domains differing in isotopic and smaller-scale domains in trace element ratios. Compositionally contrasting, but closely spaced, compositional domains in the mantle a few km across - representing heterogeneous compositions within, and/or differential rise of portions of, a mantle diapir - were activated successively with time or even released magma nearly simultaneously. A prominent example is the practically synchronous eruption of the ol-nephelinitic Mosenberg center followed immediately by the nearby melilite nephelinitic Meerfelder Maar, the largest in the Eifel. An example on a larger scale is the juxtaposition of the leucitite and plagioclase-free phonolitic Rieden and the adjacent Wehr- Laacher See basanite/plagioclase-bearing phonolite systems.

Volcano field analysis shows that magma mass eruption rates increased toward the center of both fields, coupled with an increasing degree of differentiation. The central parts of the fields show the highest erupted volumes and the highest flux of magmatic gases. These and other parameters are interpreted to mirror the central part of one or more magma collection zones in the upper mantle/Moho at least 30 (EEVF) to 50 km (WEVF) in length resulting in magma focusing in the center of both fields. Fields are dominantly oriented NW-SE, reflecting lithosphere cracking in response to the present lithospheric SW-NE-oriented tensional stress field north of the Alps which however was probably strongly enhanced by the similarly-oriented Paleozoic stress field. Cracks acting as magma pathways thus formed most easily perpendicular to the minimum compressional principal stress (σ3) in a NW-SE direction with σ1 (the maximum compressional principal stress) being vertical. Magma collection zones underlying both fields probably extended significantly laterally beyond the surface area of the volcanic fields because the most mafic magmas were erupted in the periphery of the fields. Magmas generated beyond the surface fields may have only risen as far as the crust/mantle transition zone in view of the abundant evidence for high-pressure fractionation at and below the crust/mantle boundary as well as surface degassing extending beyond the fields. Lithosphere cracking extended to the southeast during a lull in activity in the WEVF (between ca. 450-100 ka) as reflected in a migration of melt supply and surface volcanic activity. Migration of surface volcanism in the EEVF from W to ESE also occurred during a pause in surface volcanism between 350 and 215 ka and was associated with activation of a compositionally distinct melting domain. Both fields developed on either side, and in the hinge zones, of the area of maximum Quaternary uplift, magmas in the WEVF and western EEVF rising in uplifted parts of the Rhenish Massif while the eastern EEVF lavas erupted in the downfaulted Neuwied basin, part of the Rhine Rift structure.

Major Paleozoic structural discontinuities in both fields such as the Eifel N-S graben zone in the western and the Siegen thrust in the eastern field, and Tertiary faults in the Neuwied Basin, appear to have caused deviations in dike orientations and regionally significant boundaries in magma composition and xenolith suites. This suggests that some upper crustal fractures (zones of weakness) extend significantly downward into the lithosphere.

The total mass of magma supplied to the base of the crust and crustal reservoirs (estimated to have been between 300 and 500 km3) — and possibly rates of magma risen from the melting anomalies — was probably higher in the EEVF than in the WEVF. This is indicated by the volume of parent magmas that have to be postulated to generate the relatively voluminous highly evolved phonolite centers and possibly also by the much higher CO2-flux in the EEVF provided present flux rates are representative. Magma supply to the crust — and possibly magma production — was strongly focused beneath several centers in the EEVF contrasting with more diffuse magma-leaking in the WEVF, a more typical intraplate volcanic field. It is uncertain, however, whether magma focusing in the EEVF was entirely due to higher magma supply from the mantle — possibly resulting from higher degrees of partial melting — or to lower rates of lithosphere extension allowing for higher crack and dike coalescence (Takada 1994) and thus magma focusing. Volcanic activity in the Eifel is presently dormant but not extinct judging from the past temporal pattern of eruptions. Future volcanoes are likely to grow in the southeastern part of both Eifel fields.

The absence of a shear-wave anomaly between 170 and 240 km in the seismic low velocity anomaly in the mantle (Eifel Plume) may be due to separation of an upper diapir (“blob”) providing thermal energy and melt to the basal lithosphere. The upper part (30–140 km) of the seismic low velocity anomaly in the mantle has a diameter of more than 100 km and thus extends significantly beyond both volcanic fields. This upper part may correspond to the magma migration or collection zone culminating between about 37 and 30 km below the surface where the crust-mantle boundary is not sharply defined and may be the site of voluminous magma underplating. The shapes, sizes, directions and volcano concentrations of both fields do not mirror the subcircular shape of the anomaly. Provided the present mantle anomaly (plume) represents the deep mantle roots to the Quaternary volcanism, two smaller dimensions of spatially and compositionally distinct ascending “magma supply fingers” are evident. The smaller ones are a few km across and have life times on the order of several 100 ka. Two or more of these make up a volcanic field, a deep plume source (mantle diapir) spawning one or more surface field.

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References

  1. Aeschbach-Hertig A, Kipfer R, Hofer M, Imboden DM, Wieler R, Signer P (1996) Quantification of gas fluxes from the subcontinental mantle: The example of Laacher See, a maar lake in Germany. Geochim Cosmochim Acta 60:31–41CrossRefGoogle Scholar
  2. Ahorner L (1983) Historical seismicity and present-day micro-earthquake activity of the Rhenish Massif, Central Europe. In: Fuchs K et al. (eds) Plateau Uplift. Springer Heidelberg, pp 198–221Google Scholar
  3. Babuška V, Plomerová J (1992) The lithosphere in Central Europe-seismological and petrological aspects. Tectonophysics 207:101–163CrossRefGoogle Scholar
  4. Baumann H, Illies JH (1983) Stress field and strain release in the Rhenish Massif. In: Fuchs K et al. (eds) Plateau Uplift. Springer Heidelberg, pp 177–186Google Scholar
  5. Becker A (1993) An attempt to define a “Neotectonic period” for central and northern Europe. Geol Rundsch 82:67–83CrossRefGoogle Scholar
  6. Becker HJ (1977) Pyroxenites and hornblendites from the maar-type volcanoes of the West Eifel, Federal Republic of Germany. Contrib Mineral Petrol 65:45–52CrossRefGoogle Scholar
  7. Bednarz U, Schmincke H-U (1990) Evolution of the Quaternary melilitenephelinite Herchenberg volcano (East Eifel). Bull Volcanol 52:426–444CrossRefGoogle Scholar
  8. Bednarz U, Freundt A, Schmincke H-U (1983) Die Eignung von Lokationen in der E-und W-Eifel für ein deutsches HOT-DRY-ROCK Geothermik Projekt. BMFT Berichte, pp 1–100Google Scholar
  9. Berndt J, Holtz F, Koepke J (2001) Experimental constraints on storage conditions in the chemically zoned phonolitic magma chamber of the Laacher See Volcano. Contrib Mineral Petrol 140:469–486CrossRefGoogle Scholar
  10. Bogaard PJF, Wörner G (2003) Petrogenesis of basanitic to tholeiitic volcanic rocks from the Miocene Vogelsberg, Central Germany. J Petrol 44: 569–602CrossRefGoogle Scholar
  11. Bogaard Pvd (1995) 40Ar/39Ar ages of sanidine phenocrysts from Laacher See Tephra (12,900 yr BP): Chronostratigraphic and petrological significance. Earth Planet Sci Lett 133:163–174CrossRefGoogle Scholar
  12. Bogaard Pvd, Schmincke H-U (1984) The eruptive center of the late Quaternary Laacher See tephra. Geol Rundsch 73:935–982CrossRefGoogle Scholar
  13. Bogaard Pvd, Schmincke H-U (1985) Laacher See Tephra: A widespread isochronous late Quaternary ash layer in Central and Northern Europe. Geol Soc Am Bull 96:1554–1571CrossRefGoogle Scholar
  14. Bogaard Pvd, Schmincke H-U (1990) Die Entwicklungsgeschichte des Mittelrheinraumes und die Eruptionsgeschichte des Osteifel-Vulkanfeldes. In: Schirmer W (ed) Rheingeschichte zwischen Mosel und Maas. DEUQUA-Führer 1, Düsseldorf, pp 1–30Google Scholar
  15. Bogaard Pvd, Hall Ch, Schmincke H-U, York D (1989) Precise single-grain 40Ar/39Ar dating of a cold to warm climate transition in Central Europe. Nature 342:523–525CrossRefGoogle Scholar
  16. Böhnel H, Reismann N, Jäger G, Haverkamp U, Negendank JFW, Schmincke HU (1987) Paleomagnetic investigation of Quaternary West Eifel volcanics (Germany): evidence for increased volcanic activity during geomagnetic excursion/event. J Geophys 62:50–61Google Scholar
  17. Bosinski G (1981) Eiszeitjäger im Neuwieder Becken. Archäologie am Mittelrhein und Mosel 1:1–112Google Scholar
  18. Bourdon B, Zindler A, Wörner G (1994) Evolution of the Laacher See magma chamber: Evidence from SIMS and TIMS measurements of U-Th disequilibria in minerals and glasses. Earth Planet Sci Lett 126:75–90CrossRefGoogle Scholar
  19. Brauer A, Endres C, Ganter C, Litt T, Stebich M, Negendank J (1999) High resolution sediment and vegetation responses to Younger Dryas climate change in varved lake sediments from Meerfelder Maar, Germany. Quat Sci Rev 18:321–329CrossRefGoogle Scholar
  20. Bräuer K, Kämpf H, Niedermanmn S, Strauch G (2005) Evidence for ascending upper mantle-derived melt beneath the Cheb basin, central Europe. Geophys Res Lett 32, LO8303, doi:10.1029/2004GL022205. 4 pGoogle Scholar
  21. Braun T and Berckhemer H (1993) Investigation of the lithosphere beneath the Vogelsberg volcanic complex with P-wave travel time residuals. Geol Rundsch 82:20–29CrossRefGoogle Scholar
  22. Büchel G, Mertes H (1982) Die Eruptionszentren des Westeifeler Vulkanfeldes. Z Dt Geol Ges 133:409–429Google Scholar
  23. Büchel G, Lorenz V (1982) Zum Alter des Maarvulkanismus der Westeifel. N. Jb Geol Paläont Abh 163:1–22Google Scholar
  24. Cantarel P, Lippolt HJ (1977) Alter und Abfolge des Vulkanismus der Hocheifel. N Jb Geol Pal Mh 1977:600–612Google Scholar
  25. Cebria JM, Wilson M (1995) Cenozoic mafic magmatism in central Europe: a common European asthenospheric reservoir? Terra Abstracts 7:162Google Scholar
  26. Connor CB (1990) Cinder cone clustering in the Transmexican Volcanic Belt: implications for structural and petrologic models. J Geophys Res 95:19395–19405Google Scholar
  27. Connor CB, Conway FM (2000) Basaltic volcanic fields. In: Sigurdsson et al. (eds) Encyclopedia of Volcanology. Academic Press, San Diego, pp 331–344Google Scholar
  28. Duda A, Schmincke H-U (1978) Petrology of Quaternary basanites, nephelinites and tephrites from the Laacher See area (Eifel). N Jb Miner Abh 132:1–33Google Scholar
  29. Duda A, Schmincke H-U (1985) Polybaric evolution of alkali basalts from the West Eifel: Evidence from green-core clinopyroxenes. Contrib Mineral Petrol 91:340–353CrossRefGoogle Scholar
  30. Duncan RA, Petersen N, Hargraves HB (1972) Mantle plumes, movement of the European plate and polar wandering. Nature 239:82–86CrossRefGoogle Scholar
  31. Edgar AD, Lloyd FE, Forsyth DM, Barnett RL (1989) Origin of glass in upper mantle xenoliths from the Quaternary volcanics of Gees, West Eifel, Germany. Contrib Mineral Petrol 103:277–286CrossRefGoogle Scholar
  32. Fekiacova Z, Mertz D, Hofmann AW (b) Geodynamic setting of the Tertiary Hocheifel volcanism (Germany), Part II: Geochemistry and Sr, Nd and Pb isotopic compositions. This volumeGoogle Scholar
  33. Fekiacova Z, Mertz DF, Renne PR (a) Geodynamic setting of the Tertiary Hocheifel volcanism (Germany), Part I: 40Ar/39Ar geochronology. This volumeGoogle Scholar
  34. Freundt A, Schmincke H-U (1985) Lithic-enriched segregation bodies in pyroclastic flow deposits of Laacher See Volcano (E-Eifel, Germany). J Volcanol Geotherm Res 25:193–224CrossRefGoogle Scholar
  35. Freundt A and Schmincke, H-U (1986). Emplacement of small-volume pyroclastic flows at Laacher See volcano (East Eifel, Germany). Bull Volcanol 48: 39–60CrossRefGoogle Scholar
  36. Freundt B (1986): Der leuzititische Hochsimmer Vulkan (Osteifel): vulkanologische, petrologische und geochemische Entwicklung und die Säulenbildung im Lavastrom. Diplomarbeit Ruhr-Universität Bochum, pp 1–251Google Scholar
  37. Fuchs K, von Gehlen K, Mälzer H, Murawski H, Semmel A (eds) (1983) Plateau uplift, the Rhenish Shield-a case history. Springer, Heidelberg, pp 1–411Google Scholar
  38. Fuhrmann U, Lippolt HJ (1987) Excess argon and dating of Quaternary Eifel volcanism: III. Alkalibasaltic rocks of the Central West Eifel/FR Germany. N Jb Geol Pal Mh:213–236Google Scholar
  39. Giggenbach W, Sano Y, Schmincke H-U (1991) CO2 rich gases from lakes Nyos and Monoun (Cameroon), Laacher See (Germany), Dieng (Indonesia), and Mt. Gambier (Australia)-variations on a common theme. J Volcanol Geotherm Res 45:311–323CrossRefGoogle Scholar
  40. Goes S, Spakman W, Bijwaard H (1999) A lower mantle source for Central European volcanism. Science 286:1928–1932CrossRefGoogle Scholar
  41. Graf HF, Timmrick C (2001) A general climate model simulation of the aerosol radiative effects of the Laacher See eruption (10 900 BC). J Geophys Res 106:1474–14756CrossRefGoogle Scholar
  42. Granet M, Wilson M, Achauer U (1995) Imaging a mantle plume beneath the Massif Central (France). Earth Planet Sci Lett 136:281–296CrossRefGoogle Scholar
  43. Grapes RH (1986) Melting and thermal reconstitution of pelitic xenoliths, Wehr volcano, East Eifel, West Germany. J Petrol 27:343–396Google Scholar
  44. Griesshaber E, O`Nions RK, Oxburgh ER (1992) Helium and carbon isotope systematics in crustal fluids from the Eifel, the Rhine Graben and Black Forest, FRG. Chem Geol 99:213–235CrossRefGoogle Scholar
  45. Haase KM, Goldschmidt B, Garbe-Schönberg CD (2004) Petrogenesis of Tertiary continental intra-plate lavas from the Westerwald region, Germany. J Petrol 45:883–905CrossRefGoogle Scholar
  46. Halmer MM, Schmincke H-U (2003) The impact of moderate-scale explosive eruptions on stratospheric gas injections. Bull Volcanol 65:433–440CrossRefGoogle Scholar
  47. Harms E, Schmincke H-U (2000) Volatile composition of the phonolitic Laacher See magma (12 900 yr BP): Implications for syneruptive degassing of S, F, Cl and H2O. Contrib Mineral Petrol 138:84–98CrossRefGoogle Scholar
  48. Harms E, Gardner JE, Schmincke H-U (2004) Phase equilibria of the Lower Laacher See Tephra (East Eifel, Germany): constraints on pre-eruptive storage conditions of a phonolitic magma reservoir. J Volcanol Geotherm Res 134:125–138CrossRefGoogle Scholar
  49. Hoernle KA, Zhang YS, Graham D (1995) Seismic and geochemical evidence for large-scale mantle upwelling beneath the eastern Atlantic and western and central Europe. Nature 374:34–39CrossRefGoogle Scholar
  50. Houghton BF, Schmincke H-U (1986) Mixed deposits of simultaneous Strombolian and phreatomagmatic volcanism: Rothenberg Volcano, East Eifel Volcanic field. J Volcanol Geotherm Res 30:117–130CrossRefGoogle Scholar
  51. Houghton BF, Schmincke H-U (1989) Rothenberg scoria cone, East Eifel: a complex strombolian and phreatomagmatic volcano. Bull Volcanol 52:28–48CrossRefGoogle Scholar
  52. Huckenholz HG (1983) Tertiary volcanism of the Hocheifel area. In: Fuchs K et al (eds) Plateau Uplift-The Rhenish Shield-A Case History. Springer, Heidelberg, pp 121–128Google Scholar
  53. Huckenholz HG, Büchel G (1988) Tertiärer Vulkanismus der Hocheifel. Fortschr Min 66, Beiheft 2:43–82Google Scholar
  54. Jung S, Hoernes S (2000) The major and trace element and isotope (Sr, Nd, O) geochemistry of Cenozoic mafic volcanic rocks from the Rhön area (central Germany); constraints on the origin of continental alkaline and tholeiitic basalts and their mantle source. J Petrol 86:151–177Google Scholar
  55. Keller J, Brey G, Lorenz V, Sachs P (1990) IAVCEI 1990 pre-conference excursion 2A: Volcanism and petrology of the Upper Rhinegraben (Urach-Hegau-Kaiserstuhl). IAVCEI Internat Volcanol Congress Mainz 1990, pp 1–60Google Scholar
  56. Kempton PD, Harmon RS, Stosch H-G, Hoefs J, Hawkesworth CJ (1988) Opensystem O-isotope behaviour and trace element enrichment in the sub-Eifel mantle. Earth Planet Sci Lett 89:273–287CrossRefGoogle Scholar
  57. Keyser M, Ritter JRR, Jordan M (2002) 3D shear-wave velocity structure of the Eifel plume, Germany. Earth Planet Sci Lett 203:59–82CrossRefGoogle Scholar
  58. Klügel A (1998) Reactions between mantle xenoliths and host magma beneath La Palma (Canary islands): constraints on magma ascent rates and crustal reservoirs. Contrib Mineral Petrol 131:237–257CrossRefGoogle Scholar
  59. Klügel A, Hansteen TH, Schmincke H-U (1997) Rates of magma ascent and depths of magma reservoirs beneath La Palma (Canary Islands). Terra Nova 9:117–121Google Scholar
  60. Kramm U, Wedepohl KH (1990) Tertiary basalts and peridotite xenoliths from the Hessian depression (NW Germany), reflecting mantle compositions low in radiogenic Nd and Sr. Contrib Mineral Petrol 106:1–8CrossRefGoogle Scholar
  61. Langguth HR, Plum H (1984) Untersuchung der Mineral-und Thermalquellen der Eifel auf geothermische Indikationen. Forschungsber BMFT. T84-019: 1–196Google Scholar
  62. Lippolt HJ (1983) Distribution of volcanic activity in space and time. In: Fuchs K et al (eds) Plateau Uplift-The Rhenish Shield-A Case History. Springer, Heidelberg, pp 112–120Google Scholar
  63. Litt T, Schmincke H-U, Kromer B (2003) Environmental response to climatic and volcanic events in central Europe during the Weichselian Late glacial. Quat Sci Rev 22:7–32CrossRefGoogle Scholar
  64. Lloyd FE (1987) Characterization of mantle metasomatic fluids in spinel lherzolite and alkali clinopyroxenites from the West Eifel and Uganda. In: Menzies MA, Hawkesworth CJ (eds) Mantle Metasomatism. Academic Press, San Diego, pp 91–123Google Scholar
  65. Lloyd FE, Bailey DK (1975) Light element metasomatism of the continental mantle: the evidence and the consequences. In: Ahrens LH, Dawson JB, Cunkan AR, Erlank AJ (eds) Physics Chemistry Earth 9. Pergamon, Oxford, pp 389–416Google Scholar
  66. Lorenz V (1973) On the formation of maars. Bull Volcanol 37:183–204CrossRefGoogle Scholar
  67. Lorenz V (1985) Maars and diatremes of phreatomagmatic origin, a review. Trans Geol Soc South Africa 88:459–470Google Scholar
  68. Lorenz V (1986) On the growth of maars and diatremes and its relevance to the formation of tuff rings. Bull Volcanol 48:265–274CrossRefGoogle Scholar
  69. Lorenz V, Büchel G (1980) Zur Vulkanologie der Maare und Schlackenkegel der Westeifel. Mitt Pollichia 68:29–100Google Scholar
  70. Loock G, Stosch H-G, Seck HA (1990) Granulite facies lower crustal xenoliths from the Eifel, West Germany: petrological and geochemical aspects. Contrib Mineral Petrol 105:25–41CrossRefGoogle Scholar
  71. Luhr JF, Simkin T (eds) (1993) Paricutin, the volcano born in a Mexican cornfield. Geoscience Press, Phoenix, pp 1–427Google Scholar
  72. Mälzer H, Hein G, Zippelt K (1983) Height changes in the Rhenish Massif: determination and analysis. In: Fuchs K et al (eds) Plateau Uplift-The Rhenish Shield-A Case History. Springer, Heidelberg, pp 164–176Google Scholar
  73. May F (2001) CO2-flux in a dormant intraplate volcanic field: the Westeifel, Germany. Water-rock interaction, Cidu (ed.) Swets and Zeitlinger. pp 883–886Google Scholar
  74. Mechie J, Prodehl C, Fuchs K (1983) The long-range seismic refraction experiment in the Rhenish Massif. In: Fuchs K et al (eds) Plateau Uplift-The Rhenish Shield-A Case History. Springer Heidelberg, pp 260–275Google Scholar
  75. Mengel K, Sachs PM, Stosch HG, Wörner G, Loock G (1991) Crustal xenoliths from Cenozoic volcanic fields of West Germany: implications for structure and composition of the continental crust. Tectonophysics 195:271–289CrossRefGoogle Scholar
  76. Mertes H (1983) Aufbau und Genese des Westeifeler Vulkanfeldes. Bochumer geol geotechn Arb 9, pp 1–415Google Scholar
  77. Mertes H, Schmincke H-U (1983) Age distribution of volcanoes in the West-Eifel. N Jb Geol Paläont Abh 166:260–283Google Scholar
  78. Mertes H, Schmincke H-U (1985) Mafic potassic lavas of the Quaternary West Eifel volcanic field. I. Major and trace elements. Contrib Mineral Petrol 89:330–345CrossRefGoogle Scholar
  79. Meyer W (1986) Geologie der Eifel. Schweizerbart’sche Verlagsbuchhdlg (Stuttgart), pp 1–615Google Scholar
  80. Meyer W, Stets J (1981) Die Siegener Hauptaufschiebung im Laacher-See-Gebiet (Rheinisches Schiefergebirge). Z Dt Geol Ges 132:43–53Google Scholar
  81. Meyer W, Stets J (1998) Junge Tektonik im Rheinischen Schiefergebirge und ihre Quantifizierung. Z Dt Geol Ges 149:359–379Google Scholar
  82. Meyer W, Stets J. Quaternary uplift in the Eifel area. This volumeGoogle Scholar
  83. Müller B, Wehrle V, Zeyen H, Fuchs K (1997) Short scale variations of tectonic regimes in the western European stress province north of the Alps and Pyrenees. Tectonophysics 275:199–219CrossRefGoogle Scholar
  84. Panza GF, Müller ST, Calcagnile G (1980) The stress features of the lithosphereasthenosphere system in Europe from seismic surface waves and body waves. Pure Appl Geophys 118:1209–1213CrossRefGoogle Scholar
  85. Park C and Schmincke H-U (1997). Lake formation and catastrophic dam burst during the late Pleistocene Laacher See eruption (Germany). Naturwiss 84:521–525CrossRefGoogle Scholar
  86. Piromallo C, Vincent AP, Yuen DA, Morelli A (2001) Dynamics of the transition zone under Europe inferred from wavelet cross-spectra of seismic tomography. Phys Earth Planet Int 125:125–139CrossRefGoogle Scholar
  87. Prodehl C, Müller St, Glahn A, Gutscher M, Haak V (1992) Lithospheric cross-section of the European Cenozoic rift system. In: Ziegler PA (ed), Geodynamics of rifting, Vol I. Case history studies on rifts: Europe and Asia. Tectonophysics 208, pp 113–138Google Scholar
  88. Prodehl C, Müller St, Haak V (1995) The European Cenozoic rift system. In: Olsen KH (ed) Continental rifts: Evolution, structure, tectonics. Elsevier (Amsterdam), pp 133–212Google Scholar
  89. Raikes SA (1980) Teleseismic evidence for velocity heterogeneity beneath the Rhenish Massif. J Geophys 48:80–83Google Scholar
  90. Raikes SA, Bonjer K-P (1983) Large-scale mantle heterogeneity beneath the Rhenish Massif and its vicinity from teleseismic p-residuals measurements. In: Fuchs K et al (eds) Plateau Uplift-The Rhenish Shield-A Case History. Springer (Heidelberg), pp 315–331Google Scholar
  91. Ritter JRR (2005) Small-scale mantle plumes: Imaging and geodynamic aspects. In: F Wenzel (ed) Perspectives in Modern Seismology. Lecture Notes Earth Sci, Springer, pp 69–94Google Scholar
  92. Ritter JRR. The seismic signature of the Eifel plume. This volumeGoogle Scholar
  93. Ritter JRR, Jordan M, Christensen UR, Achauer U (2001) A mantle plume below the Eifel volcanic fields, Germany. Earth Planet Sci Lett 98:192–207Google Scholar
  94. Sachs PM, Hansteen TH (2000) Pleistocene underplating and metasomatism in the lower continental crust: a xenolith study. J Petrol 41:331–356CrossRefGoogle Scholar
  95. Sachtleben T, Seck HA (1981) Chemical control of Al-solubility in orthopyroxene and its implications on pyroxene geothermometry. Contrib Mineral Petrol 78:157–165CrossRefGoogle Scholar
  96. Schmincke H-U (1977a) Eifel-Vulkanismus östlich des Gebietes Rieden-Mayen. Fortschr Miner 55, Beiheft 2:1–31Google Scholar
  97. Schmincke H-U (1977b) Phreatomagmatische Phasen in quartären Vulkanen der Osteifel. Geol Jahrb 39:3–45Google Scholar
  98. Schmincke H-U (1982) Vulkane und ihre Wurzeln. Rhein-Westf Akad Wissensch, Westd Verl (Opladen), Vorträge N 315:35–78Google Scholar
  99. Schmincke H-U (2000) Vulkanismus. Wiss Buchges Darmstadt, 2nd ed, pp 1–264Google Scholar
  100. Schmincke H-U (2004) Volcanism. Springer Heidelberg. pp 1–324Google Scholar
  101. Schmincke H-U (2006) The Quaternary Eifel volcanic fields. Görres Verlag Koblenz, pp 1–125Google Scholar
  102. Schmincke H-U, Fisher RV, Waters AC (1973) Antidune and chute and pool structures in base surge of the Laacher See area, (Germany). Sedimentology 20:1–24CrossRefGoogle Scholar
  103. Schmincke H-U, Bogaard Pvd, Freundt A (1990). Quaternary Eifel Volcanism. Excursion guide, workshop in explosive volcanism. IAVCEI Internat Volcanol Congr Mainz (Germany). Pluto Press Witten pp 1–188Google Scholar
  104. Schmincke H-U, Lorenz V, Seck HA (1983) The Quaternary Eifel volcanic fields. In: Fuchs K et al (eds) Plateau Uplift-The Rhenish Shield-A Case History. Springer (Heidelberg), pp 139–151Google Scholar
  105. Schmincke H-U, Park C, Harms E (2000) Evolution and environmental impacts of the eruption of Laacher See Volcano (Germany) 12,900 a BP. Quat Int 61:61–72CrossRefGoogle Scholar
  106. Schnepp E, Hradetzky H (1994) Combined paleointensity and 40Ar/39Ar age spectrum data from volcanic rocks of the East Eifel field (Germany): Evidence for an early Brunhes geomagnetic excursion. J Geophys Res 99:9061–9076CrossRefGoogle Scholar
  107. Schulz B (1992) Mineralogie und Geochemie des Niedermendiger Lavastroms. Diplomarbeit Ruhr Univ Bochum: pp 1–143Google Scholar
  108. Schumacher ME (2002) Upper Rhine Graben: the role of pre-existing structures during rift evolution. Tectonics 21: doi: 10.1029/2001TC900022. 17 ppGoogle Scholar
  109. Seck HA, Wedepohl KH (1983) Mantle xenoliths in the Rhenish Massif and the Northern Hessian Depression. In: Fuchs K et al (eds) Plateau Uplift-The Rhenish Shield-A Case History. Springer (Heidelberg), pp 343–351Google Scholar
  110. Shaw CSJ (2004) The temporal evolution of three magmatic systems in the West Eifel volcanic field. J Volcanol Geotherm Res 131:213–240CrossRefGoogle Scholar
  111. Shaw CSJ, Klügel A (2002) The pressure and temperature conditions and timing of glass formation in mantle-derived xenoliths from Baarley, West Eifel, Germany: the case for amphibole breakdown, lava infiltration and mineralmelt reaction. Min Pet 74:163–187CrossRefGoogle Scholar
  112. Shaw CSJ, Eyzaguirre J, Fryer B, Gagnon J (2005) Regional variations in the mineralogy of metasomatic assemblages in mantle xenoliths from the West Eifel Volcanic Field, Germany. J Petrol 46:945–972CrossRefGoogle Scholar
  113. Simkin T, Siebert L (1994) Volcanoes of the World. 2nd ed. Geoscience Press, Missoula, pp 1–368Google Scholar
  114. Sleep NH (1996) Lateral flow of hot plume material ponded at sublithospheric depths. J Geophys Res 101:28065–28084CrossRefGoogle Scholar
  115. Sleep NH (2002) Local lithospheric relief associated with fracture zones and ponded plume material. G33: 8506, doi:10.1029/2002GC000376Google Scholar
  116. Sobczak G (1986) Vulkanologische und geochemische Entwicklung der spätquartären Bellerberg Vulkangruppe. Diplomarbeit (MA thesis) Ruhr Universität Bochum, pp 1–215Google Scholar
  117. Spörli KB, Eastwood VR (1997) Elliptical boundary of an intraplate volcanic field, Auckland, New Zealand. J Volcanol Geotherm Res 79:169–179CrossRefGoogle Scholar
  118. Stosch HG (1987) Constitution and evolution of subcontinental upper mantle and lower crust in areas of young volcanism: differences and similarities between the Eifel (FR Germany) and Tariat Depression (central Mongolia) as evidenced by peridotite and granulite xenoliths. Fortschr Mineral 65:49–86Google Scholar
  119. Stosch HG, Lugmair GW (1984) Evolution of the lower continental crust: granulite-facies xenoliths from the Eifel, West Germany. Nature 311:368–370CrossRefGoogle Scholar
  120. Stosch HG, Lugmair GW (1986) Trace element and Sr and Nd isotope geochemistry of peridotite xenoliths from the Eifel (West Germany) and their bearing on the evolution of the subcontinental lithosphere. Earth Planet Sci Lett 80:281–298CrossRefGoogle Scholar
  121. Stosch H-G, Seck HA (1980) Geochemistry and mineralogy of two spinel peridotite suites from Dreiser Weiher, West Germany. Geochim Cosmochim Acta 44:457–470CrossRefGoogle Scholar
  122. Tait SR, Wörner G, Bogaard Pvd, Schmincke H-U (1989) Cumulate nodules as evidence for convective fractionation in a phonolite magma chamber. J Volcanol Geotherm Res 37:21–37CrossRefGoogle Scholar
  123. Takada A (1994) The influence of regional stress and magmatic input on styles of monogenetic and polygenetic volcanism. J Geophys Res 99:13563–13573CrossRefGoogle Scholar
  124. Tamura Y, Tatsumi Y, Zhao D, Kido Y, Shukuno H (2002) Hot fingers in the mantle wedge: new insights into magma genesis in subduction zones. Earth Planet Sci Lett 197:105–116CrossRefGoogle Scholar
  125. Trieloff M, Altherr R. He-Ne-Ar isotope systematics in Eifel and Pannonian basin mantle xenoliths trace deep mantle plume-lithosphere interaction beneath the European continent. This volumeGoogle Scholar
  126. Viereck L (1984) Geologische und petrologische Entwicklung des pleistozänen Vulkankomplexes Rieden, Ost-Eifel. Bochumer geol geotechn Arb 17:1–337Google Scholar
  127. Wedepohl KH, Gohn E, Hartmann G (1994) Cenozoic alkali basaltic magmas of western Germany and their products of differentiation. Contrib Mineral Petrol 115:253–278CrossRefGoogle Scholar
  128. Wilson M, Downes H (1991) Tertiary-Quaternary extension-related alkaline magmatism in western and central Europe. J Petrol 32:811–849Google Scholar
  129. Wilson M, Downes H (1992) Mafic alkaline magmatism associated with the European Cenozoic rift system. Tectonophysics 208:173–182CrossRefGoogle Scholar
  130. Wilson M, Downes H (2006) Tertiary-Quaternary intra-plate magmatism in Europe and its relationship to mantle dynamics. In: Stephenson R, Gee D (eds) European Lithosphere Dynamics. Geol Soc London Mem (in press)Google Scholar
  131. Wilson M, Patterson R (2002) Intraplate magmatism related to short-wavelength convective instabilities in the upper mantle: evidence from the Tertiary-Quaternary volcanic province of western and central Europe. Geol Soc Am Spec Paper 352:37–58Google Scholar
  132. Wilson M, Rosenbaum JM, Dunworth EA (1995) Melilitites: partial melts of the thermal boundary layer? Contrib Min Pet 119:181–196CrossRefGoogle Scholar
  133. Witt-Eickschen G. Thermal and geochemical evolution of the shallow subcontinental lithospheric mantle beneath the Eifel: Constraints from mantle xenoliths: a review. This volumeGoogle Scholar
  134. Witt G, Seck HA (1989) Origin of amphibole in recrystallized and porphyroclastic mantle xenoliths from the Rhenish Massif: implications for the nature of mantle metasomatism. Earth Planet Sci Lett 91:327–340CrossRefGoogle Scholar
  135. Witt-Eickschen G, Kramm U (1998) Evidence for the multiple stage evolution of the subcontinental lithospheric mantle beneath the Eifel (Germany) from pyroxenite and composite pyroxenite/peridotite xenoliths. Contrib Mineral Petrol 131:258–272CrossRefGoogle Scholar
  136. Witt-Eickschen G, Kaminsky W, Kramm U, Harte B (1998) The nature of young vein metasomatism in the lithosphere of the West Eifel (Germany): geochemical and isotopic constraints from composite mantle xenoliths from the Meerfelder Maar. J Petrol 39:155–185CrossRefGoogle Scholar
  137. Witt-Eickschen G, Seck HA, Mezger K, Eggins SM (2003) Lithospheric mantle evolution beneath the Eifel (Germany): constraints from Sr-Nd-Pb isotopes and trace element abundances in spinel peridotite and pyroxenite xenoliths. J Petrol 44:1077–1095CrossRefGoogle Scholar
  138. Wörner G (1998) Quaternary Eifel volcanism, its mantle sources and effect on the crust of the Rhenish Shield. In: Neugebauer HJ (ed) Young tectonics — magmatism — fluids: a case study of the Rhenish Massif, University of Bonn, SFB 35074:11–16Google Scholar
  139. Wörner G, Schmincke H-U (1984a) Mineralogical and chemical zonation of the Laacher See tephra sequence. J Petrol 25:805–835Google Scholar
  140. Wörner G, Schmincke H-U (1984b) Petrogenesis of the Laacher See tephra sequence (East Eifel, Germany). J Petrol 25:836–851Google Scholar
  141. Wörner G, Viereck LG, Plaumann S, Pucher R, Bogaard Pvd, Schmincke H-U (1988) The Quaternary Wehr Volcano: A multiphase evolved eruption center in the East Eifel Volcanic field (FRG). N Jb Miner Abh 159:73–99Google Scholar
  142. Wörner G, Wright TL (1984) Evidence for magma mixing within the Laacher See magma chamber. J Volcanol Geotherm Res 22:301–327CrossRefGoogle Scholar
  143. Wörner G, Zindler A, Staudigel H, Schmincke H-U (1986) The sources of continental basalts. Earth Planet Sci Lett 79:107–119CrossRefGoogle Scholar
  144. Wörner G, Schmincke H-U, Schreyer W (1982) Crustal xenoliths from the Quaternary Wehr volcano (East Eifel). N Jb Miner Abh 144:29–55Google Scholar
  145. Wörner G, Staudigel H, Zindler A (1985) Isotopic constraints on open system evolution of the Laacher See magma chamber (Eifel, West Germany). Earth Planet Sci Lett 75:37–49CrossRefGoogle Scholar
  146. Ziegler PA (1992) European Cenozoic rift system. In: Ziegler PA (ed) Geodynamics of Rifting Volume I. Case History on rifts: Europe and Asia. Tectonophysics 208, pp 91–111Google Scholar
  147. Zolitschka B, Negendank JFW, Lottermoser B G (1995) Sedimentological proof and dating of the early Holocene volcanic eruption of Ulmener Maar (Vulkaneifel, Germany). Geol Rdsch 84:213–219CrossRefGoogle Scholar

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© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Hans-Ulrich Schmincke
    • 1
  1. 1.Ascheberg

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