Abstract
Patterns of spatial distribution, and geochemical and isotopic evolution from subduction-related igneous rocks provide tools for scaling, balancing and predicting orogenic processes and mechanisms. We discuss patterns from two Andean key arc segments, which developed into fundamentally different types of orogens: (1) A plateau-type orogen with thick crust in the central Andes, and (2) a non-plateau orogen with normal crust in the southern Andes.
Northern Chile (21–26° S) shows a collage of stepwise, eastwardmigrating arc axes from 200 Ma to the Present. Each arc is characterized by a repeating sequence of magmatic-tectonic events: Magmatism for 30–40 million years with increasing REE fractionation (increasing La/Yb, La/Sm and Sm/Yb ratios); increasing crust-like initial Sr and Nd isotopes; early-stage, back-arc, alkaline magmatism; and late-stage tectonic activity and (mainly) crustal shortening followed by intra-arc strike-slip fault motion, followed by mineralization and magmatic quiescence for 5–12 million years, before the next main-arc evolved up to 100 km further east. Increasing REE fractionation and crust-like Sr and Nd isotopes correlate with crustal thickening by tectonic shortening and magmatic underplating, from 30–35 km (Jurassic) to 45 km (Eocene) to 70 km thick in the modern central Andes. Episodes of magmatic quiescence for 5–12 million years reflect episodes of flat subduction; the repeated nature of these episodes reflects dynamic subduction cycles including flat subduction, slab steepening, and slab breakoff.
Southern Chile (41–46° S) shows stationary arc magmatism from 200 to 50 Ma; followed by trench retreat and arc widening from 50–28 Ma; arc narrowing from 28–8 Ma; and magmatic quiescence from 8–3 Ma. Volcanism from the Pliocene to the Present was concentrated in a narrow volcanic arc. Moderate crustal shortening occurred from 70–55 Ma (mainly back-arc) and ∼9–8 Ma (intra-arc). REE fractionation patterns (low and constant La/Yb ratios) are similar to those of Jurassic rocks from northern Chile, consistent with crustal thicknesses of 30-35 km. Initial Sr and Nd isotopes between 200 and 20 Ma evolved from crust-like to mantle-like ratios, with a reversal at 20 Ma to more diffuse and crust-like ratios. This pattern can be related to successive isotopic shielding and/or asthenospheric depletion (200-20 Ma), and increasing crustal assimilation (20 Ma to Recent) due to moderate crustal thickening. Similarly to northern Chile, magmatic quiescence from 8-3 Ma may reflect an episode of flat subduction.
The cyclicity of magmatic, isotopic, and tectonic features in northern Chile suggests that rheologic weakening of the lithosphere plays an important role. Shared magmatic-tectonic features of paleo-arcs in northern Chile and regions of subhorizontal in southern Chile suggests that flat slab episodes may be a typical feature of Andean-type margins.
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References
Allmendinger RW (1986) Tectonic development, southeastern border of the Puna Plateau, northwestern Argentine Andes. Geol Soc Am Bull 97:1070–1082
Allmendinger RW, Jordan TE, Kay SM, Isacks BL (1997) The evolution of the Altiplano-Puna plateau of the Central Andes. Ann Rev Earth Planet Sci 25:139–174
Andriessen PA, Reutter K-J (1994) K-Ar and fission-track mineral age determination of igneous rocks related to multiple magmatic arc systems along the 23°S lat. of Chile and NW Argentina. In: Reutter K-J, Scheuber E, Wigger P (eds) Tectonics of the Southern Central Andes. Springer-Verlag, Berlin Heidelberg New York, pp 141–153
Arancibia G (2004) Mid-Cretaceous crustal shortening: evidence from a regional-scale ductile shear zone in the Coastal range of central Chile (32°S). J South Am Earth Sci 17:209–226
Barazangi M, Isacks B (1976) Spatial distribution of earthquakes and subduction of the Nazca plate beneath South America. Geology 4:686–692
Barnes HL (1997) Geochemistry of hydrothermal ore deposits. John Wiley & Sons, NewYork, p 972
Barth MG, Foley SF, Horn I (2002) Partial melting in Archean subduction zones: constraints from experimentally determined trace elements partition coefficients between eclogitic materials and tonalitic melts under upper mantle conditions. Precambrian Res 113:323–340
Bartsch V (2004) Magmengenese der obertriassischen bis unterkretazischen Vulkanite der mesozoischen Vulkanite in der Küstenkordillere von N-Chile zwischen 24° und 27°S: Petrographie, Mineralchemie, Geochemie und Isotopie. PhD thesis, Technische Universität Berlin
Bird P (1979) Continental delamination and the Colorado Plateau. J Geophys Res 84(B13):7561–7571
Boric R, Diaz F, Maksaev V (1990) Geologia y yacimientos metaliferos de la Region de Antofagasta, Serv Nac Geol Miner Boletin 40
Boyd TM, Snoke JA, Sacks IS, Rodriguez AB (1984) High resolution determination of the Benioff zone geometry beneath southern Peru, Bull Seismol Soc Am 74:559–568
Bruce RM, Nelson EP, Weaver SG, Lux DR (1991) Temporal spatial variation in the southern Patagonian batholith: constraints on magmatic arc development. In: Harmon RS, Rapela CW (eds) Andean magmatism and its tectonic setting. Geol Soc Am Spec P 265:1–12
Cahill TA, Isacks BL (1992) Seismicity and shape of the subducted Nazca plate. J Geophys Res 97:17503–17529
Cande SC, Leslie RB, Parra JC, Hobart M (1986) Interaction between the Chile ridge and Chile trench; Geophysical and geothermal evidence. J Geophys Res B92:495–520
Charrier R, Reutter K-J (1994) The Purilactis Group of northern Chile: boundary between arc and backarc from late Cretaceous to Eocene. In: Reutter K-J, Scheuber E, Wigger P (eds) Tectonics of the Southern Central Andes. Springer-Verlag, Berlin Heidelberg New York, pp 189–202
Cloos M (1993) Lithospheric buoyancy and collisional orogenesis: Subduction of oceanic plateaus, continental margins, island arcs, spreading ridges, and seamounts. Geol Soc Am Bull 105:715–737
Davidson JP, Harmon RS, Wörner G (1991) The source of central Andean magmas: some considerations. In: Harmon RS, Rapela CW (eds) Andean magmatism and its tectonic setting. Geol Soc Am Spec P 265:233–243
Döbel R, Hammerschmidt K, Friedrichsen H (1992) Implication of 40Ar/39Ar dating of Early Tertiary volcanic rocks from the north-Chilean Precordillera. Tectonophysics 202:55–81
England P, Engdahl R, Thatcher W (2004) Systematic variation in the depths of slabs beneath arc volcanoes. Geophys J Int 156:377–408
Furlong K, Fountain Dm (1986) Continental crustal underplating: thermal considerations and seismic-petrological consideration. J Geophys Res 91:8285–8294
Garfunkel Z, Anderson CA, Schubert G (1986) Mantle circulation and the lateral migration of subducted slabs. J Geophys Res 91(B7):7205–7223
Grocott J, Brown M, Dallmeyer RD, Taylor GK, Treloar TJ (1994) Mechanisms of continental growth in extensional arcs: an example from the Andean plate-boundary zone, Geology 22:391–394
Günther A (2001) Strukturgeometrie, Kinematikanalyse und Deformationsgeschichte des oberkretazisch-alttertiären magmatischen Bogens (21.5–23°S), Berliner Geowiss Abh 213
Gutscher MA, Spakman W, Bkjwaard H, Engdahl ER (2000) Geodynamics of flat subduction: seismicity and tomographic constraints from the Andean margin. Tectonics 19:814–833
Haschke (2002) Evolutionary geochemical patterns of Late Cretaceous to Eocene arc magmatic rocks in North Chile: implications for Archean crustal growth. EGU Stephan Mueller Spec Pub Ser 2, pp 207–218
Haschke M, Günther A (2003) Balancing crustal thickening in arc by tectonic vs. magmatic means. Geology 31(11):933–936
Haschke M, Siebel W, Günther A, Scheuber E (2002a) Repeated crustal thickening and recycling during the Andean orogeny in North Chile (21°–26°S). J Geophys Res 107(B1): 10.1029/2001JB000328
Haschke M, Scheuber E, Günther A, Reutter K-J (2002b) Evolutionary cycles during the Andean orogeny: repeated slab breakoff and flat subduction? Terra Nova 14(1):49–56
Haschke M, Echtler H, Oncken O (2003) Fate of Basaltic Underplate in North and South Chile. Geol Soc Am Abs Prog 64815, 35(6)
Hasegawa A, Sacks IS (1981) Subduction of the Nazca Plate beneath Peru as determined from seismic observations. J Geophys Res 86:4971–4980
Hildreth W, Moorbath S (1988) Crustal Contributions to arc magmatism in the Andes of Central Chile, Contrib Mineral Petrol 98:455–489
Horton BK (1998) Sediment accumulation on top of the Andean orogenic wedge: Oligocene to late Miocene basins of the Eastern Cordillera, southern Bolivia. Geol Soc Am Bull 110:1174–1192
Isacks BL (1988) Uplift of the Central Andean Plateau and bending of the Bolivian orocline. J Geophys Res 93:3211–3231
Jaillard RD (1986) Relations among subduction parameters, Rev Geophys 24:217–284
James DE, Sacks IS (1999) Cenozoic formation of the Central Andes: a geophysical perspective. In: Skinner BJ (ed) Geology and ore deposits of the Central Andes. Soc Econ Geol Spec Pub 7, pp 1–25
Jordan TE, Reynolds JH, Erikson JP (1997) Variability in age of initial shortening and uplift in the central Andes, 16–33°30’S. In: Ruddiman W (ed) Tectonic uplift and climate change. Plenum, New York, pp 41–61
Jordan TE, Burns WM, Veiga R, Pangaro F, Copeland P, Kelley S, Mpodozis C (2001) Extension and basin formation in the southern Andes caused by increased convergence rate: a mid-Cenozoic trigger for the Andes. Tectonics 20(3):308–324
Kay SM (2002) Tertiary to Recent transient shallow subduction zones in the Central and Southern Andes. XV Congreso Geologico Argentino, Calafata, Argentina, Abstract 237
Kay SM, Abbruzzi JM (1996) Magmatic evidence for Neogene lithospheric evolution of the central Andean “flat-slab” between 30°S and 32°S. Tectonophysics 259:15–28
Kay RW, Kay SM (1991) Creation and destruction of lower continental crust. Geol Rundsch 80(2):259–278
Kay SM, Mancilla O (2001) Neogene shallow subduction segments in the Chilean/Argentine Andes and Andean-type margins. Geol Soc Am Abs Prog 33, A156
Kay SM, Mpodozis C (2001) Central Andean ore deposits linked to evolving shallow subduction systems and thickening crust, GSA Today 11(3):4–9
Kay SM, Maksaev V, Mpodozis C, Moscoso R, Nasi C (1987) Probing the evolving Andean lithosphere: Mid-late Tertiary magmatism in Chile (29°–30.5°S) over the zone of subhorizontal subduction. J Geophys Res 92:6173–6189
Kay SM, Mpodozis C, Ramos VA, Munizaga F (1991) Magma source variations for Mid-Tertiary magmatic rocks associated with a shallowing subduction zone and a thickening crust in the Central Andes (28°–33°S). In: Harmon RS, Rapela CW (eds) Andean magmatism and its tectonic setting. Geol Soc Amer Spec P 265:113–137
Kay SM, Ardolino AA, Franchi M, Ramos VA (1993) El origen de la meseta de Somun Cura: distribucion y geoquimica de sus rocas volcanicas maficas, XII Congr. Geol. Argentino y II. Congr. Explor. Hidrocarburos, 4, pp 236–248
Kay SM, Mpodozis C, Tittler A, Cornejo P (1994) Tertairy magmatic evolution of the Maricunga Mineral Belt in Chile. Int Geol Rev 36:1079–1112
Kay SM, Mpodozis C, Coira B (1999) Neogene magmatism, tectonism, and mineral deposits of the central Andes (22° to 33°S latitude). In: Skinner BJ (ed) Geology and ore deposits of the Central Andes. Soc Econom Geol Spec Pub 7, pp 27–59
Kincaid C, Griffiths RW (2004) Variability in flow and temperatures within mantle subduction zones. Geochem Geophys Geosyst 5(6): doi 10.1029/2003GC000666
Kincaid C, Sacks S (1997) The thermal and dynamical evolution of the upper mantle in subduction zones. J Geophys Res 102:12295–12315
Kilian R, Behrmann JH (2003) Geochemical constraints on the sources of Southern Chile Trench sediments and their recycling in arc magmas of the Southern Andes. J Geol Soc London 160: doi 10.1144/0016-764901-143
Klein M, Stosch HG, Seck HA (1997) Partitioning of high field-strength and rare-earth elements between amphibole and quartz-dioritic to tonalitic melts: an experimental study. Chem Geol 138:257–271
Kley J, Müller J, Tawackoli S, Jacobshagen V, Manutsoglu E (1997) Pre-Andean and Andean-age deformation in the Eastern Cordillera of southern Bolivia. J S Am Earth Sci 10:1–19
Lahsen A (1982) Upper Cenozoic volcanism and tectonism in the Andes of northern Chile. Earth Sci Rev 18:258–302
Lara L, Rodriguez C, Moreno H, Arce C (2001) Geocronologia K-Ar y geoquimica del volcanismo piloceno superior-pleistoceno de los Andes del sur (39–42°S). Rev Geol Chile 28(1):67–90
Lavenu A, Cembrano J (1999) Compressional-and transpressionalstress pattern for Pliocene and Quaternary brittle deformation in fore arc and intra-arc zones (Andes of Central and Southern Chile). J Struct Geol 21:1669–1691
Lopez-Escobar L, Vergara M (1997) Eocene-Miocene longitudinal depression and Quaternary volcanism in the southern Andes, Chile (33–42.5°S): a geochemical comparison. Rev Geol Chile 24(2):227–244
Maksaev V (1988) Metallogenic implications of K-Ar, 40Ar-39Ar, and fission-track dates of mineralized areas in the Andes of northern Chile. V Congreso Geologíco Chileno, Actas 1:B65–B86
McCaffrey R (1997) Influences of recurrence times and fault temperatures on the age-rate dependence of subduction zone seismicity. J Geophys Res 102:22839–2285
McGeary S, Nur A, Ben-Avraham Z (1985) Spatial gaps in arc volcanism: the effect of collision or subduction of oceanic plateaus. Tectonophysics 119:195–221
McKenzie D, Nimmo F, Jackson JA (2000) Characteristics and consequences of flow in the lower crust. J Geophys Res 105(B5):11029–11046
McMillan N, Davidson J, Wörner G, Harmon RS, Lopez-Escobar L, Moorbath S (1993) Mechanism of trace element enrichment related to crustal thickening: the Nevados de Payachata region, Northern Chile. Geology 21:467–470
Megard F (1987) Cordilleran Andes and marginal Andes: a review of Andean geology north of the Arica elbow (18°S). In: Monger JW, Francheteau J (eds) Circum-Pacific orogenic belts and evolution of the Pacific Ocean Basin. AGU Geodyn Ser 18, pp 71–95
Melnick D, Rosenau M, Folguera A, Echtler H (2006) Neogene tectonic evolution of the Neuquén Andes western flank. In: Kay SM, Ramos VA (eds) Evolution of an Andean margin: a tectonic and magmatic view from the Andes to the Neuquén Basin (35°–39° S lat). Geol Soc Am Spec P 407:73–95
Mpodozis C, Cornejo P, Kay SM (1995) La franja de Maricunga: sintesis de la evolucion del frente volcanico Oligocene-Mioceno de la zona sur de los Andes centrales. Rev Geol Chile 22:273–314
Munizaga F, Herve F, Drake R, Pankhurst RJ, Brook M, Snelling N (1988) Geochronology of the Lake Region of south-central Chile (39°–42°S): preliminary results. J S Am Earth Sci 1:309–316
Munoz J, Duhart P, Crignola P, Farmer GL, Stern CR (1989) Alkaline magmatism within the segment 38–39°S of the Plio-Quaternary volcanic belt of the southern South American continental margin. J Geophys Res 94:4545–4560
Munoz J, Duhart P, Farmer L (2000) The relation of the mid-Tertiary coastal magmatic belt in South-Central Chile to the late Oligocene increase in plate convergence rate. Rev Geol Chile 27(2):177–203
Pankhurst RJ, Rojas L, Cembrano J (1992) Magmatism and tectonics in continental Chile, Chile (41°–42°30’S). Tectonophysics 205:283–294
Pankhurst RJ, Herve F (1994) Granitoid age distribution and emplacement control in the North Patagonian Batholith, Aysen, Southern Chile. 7. Congreso Geologíco Chileno, Actas 2:1409–1413
Pankhurst RJ, Weaver SD, Herve F, Larrondo P (1999) Mesozoic-Cenozoic evolution of the North Patagonian Batholith in Aysen, southern Chile. J Geol Soc London 156:673–694
Parada MA, Nyström JO, Levi B (1999) Multiple sources for the Coastal Batholith of central Chile (31–34°S): geochemical and Sr-Nd isotopic evidence and tectonic implications. Lithos 46:505–521
Pardo Casas F, Molnar P (1987) Relative motion of the Nazca (Farallon) and South American plates since Late Cretaceous time. Tectonics 6(3):233–248
Pearce JA, Leat PT, Barker PF, Millar IL (2001) Geochemical tracing of Pacific-to-Atlantic upper mantle flow through the Drake Passage. Nature 410:457–461
Pilger RH (1984) Cenozoic plate kinematics, subduction and magmatism: South American Andes. J Geol Soc London 141(5):793–802
Ramos VA (1989) Andean foothills structures in northern Magellanes Basin, Argentina. AAPG 73:887–903
Ramos VA (2005) Seismic ridge subduction and topography: foreland deformation in the Patagonian Andes. Tectonophysics 399:73–86
Rapp RP, Watson EB (1995) Dehydration melting of metabasalt at 8–32 kbar: implications for continental growth and crust-mantle recycling. J Petrol 36(4):891–931
Reutter K-J (2001) Le Ande centrali: elementi di un’orogenesi di margine continental attivo, Acta Naturalia L’Ateneo Parmense 37(1–2):5–37
Reutter K-J, Scheuber E, Helmcke D (1991) Structural evidence of orogen-parallel strike-slip displacements in the Precordillera of northern Chile. Geol Rundsch 80:135–153
Reutter KJ, Scheuber E, Chong G (1996) The Precordilleran fault system of Chuquicamata, Northern Chile: evidence for reversals along arc-parallel strike-slip faults. Tectonophysics 259:213–228
Rogers G, Hawkesworth CJ (1989) A geochemical traverse across the North Chilean Andes: evidence for crust generation from the mantle wedge. Earth Planet Sci Lett 91:271–285
Royden L (1996) Coupling and decoupling of crust and mantle in convergent orogens: implications for strain partitioning in the crust. J Geophys Res 101(B8):17679–17705
Rushmer T (1993) Experimental high pressure granulites: some applications to natural mafic xenolith suites and Archean granulite terranes. Geology 21:411–414
Sacks IS (1983) The subduction of young lithosphere. J Geophys Res 88:3355–3366
Sandeman HA, Clark AH, Farrar E (1995) An integrated tectonomagmatic model for the evolution of the southern Peruvian Andes (13–20°S) since 55 Ma. Int Geol Rev 37:1039–1073
Scheuber E, Gonzales G (1999) Tectonics of the Jurassic-Early Cretaceous magmatic arc of the north Chilean Coastal Cordillera (22°–26°S): a story of crustal deformation along a convergent plate margin. Tectonics 18(5): 895–910
Scheuber E, Reutter K-J (1992) Magmatic arc tectonics in the central Andes between 21° and 25°S. Tectonophysics 205:127–140
Scheuber E, Bogdanic T, Jensen A, Reutter K-J (1994) Tectonic development of the North Chilean Andes in relation to plate convergence and magmatism since the Jurassic. In: Reutter K-J, Scheuber E, Wigger P (eds) Tectonics of the Southern Central Andes. Springer-Verlag, Berlin Heidelberg New York, pp 121–139
Scholl WD, von Huene RE, Vallier T, Howell DG (1980) Sedimentation masses and concepts about tectonic processes at underthrust ocean margins. Geology 8:564–568
Silver PG, Russo RM, Lithgow-Bertelloni C (1998) Coupling of South American and African plate motion and plate deformation. Science 279:60–63
Somoza R (1998) Updated Nazca (Farallon)-South America relative motions during the last 40 Ma: implications for mountain building in the central Andean region. J South Amer Earth Sci 11(3):211–215
St Amand P, Allen CR (1960) Strike-slip faulting in northern Chile. Geol Soc Am Bull Abs 71:8965
Stocker RL, Ashby MF (1973) On the rheology of the upper mantle. Rev Geophys 11:391–426
Suarez M, De La Cruz R (2001) Jurassic to Miocene K-Ar dates from eastern central Patagonian Cordillera plutons, Chile (45–48°S). Geol Mag 138(1):53–66
Tebbens SF, Cande SC (1997) Southeast Pacific tectonic evolution from early Oligocene to Present. J Geophys Res 102(B6):12061–12084
Tomlinson AJ, Blanco N (1997) Structural evolution and displacement history of the West Fault system, Precordillera, Chile. VIII Congreso Geologíco Chileno, Actas 4, pp 1873–1882
Turner S, Hawkesworth C (1998) Using geochemistry to map mantle flow beneath the Lau Basin. Geology 26:1019–1022
Van Westrenen W, Blundy JD, Wood BJ (2001) High field strength element/rare earth element fractionation during partial melting in the presence of garnet: implications for identification of mantle heterogeneities. Geochem Geophys Geosyst 2: doi 2000GC000133
Von Blanckenburg F, Davies JH (1995) Slab breakoff: a model for syncollisional magmatism and tectonics in the Alps. Tectonics 14:120–131
von Huene RE, Scholl DW (1991) Observations at convergent margins concerning sediment subduction, subduction erosion, and the growth of continental crust. Rev Geophys 29:279–316
Wendt JL, Regelous M, Collerson KD, Ewart A (1997) Evidence for a contribution from two mantle plumes to the island-arc lavas from northern Tonga. Geology 25:611–614
Wigger PJ, Schmitz M, Araneda M, Asch G, Baldzuhn S, Giese P, Heinsohn WD, Martinez E, Ricaldi E, Rüwer P, Viramonte J (1994) Variation in the crustal structure of the southern central Andes deduced from seismic refraction investigations. In: Reutter K-J, Scheuber E, Wigger P (eds) Tectonics of the Southern Central Andes. Springer-Verlag, Berlin Heidelberg New York, pp 23–48
Yanez G, Cembrano J, Pardo M, Ranero C, Selles D (2002) The Challenger-Juan Fernandez-Maipo major transition of the Nazca-Andean subduction system at 33–34°S: geodynamic evidence and implications. J S Am Earth Sci 15:23–38
Yuan X, Sobolev SV, Kind R, Oncken O, Bock G, Asch G, Schurr B, Graeber F, Rudloff A, Hanka W, Wylegalla K, Tibi R, Haberland C, Rietbrock A, Giese P, Wigger P, Rower P, Zandt G, Beck S, Wallace T, Pardo M, Comte D (2000) New constraints on subduction and collision processes in the Central Andes from P-to-S converted seismic phases. Nature 408(6815):958–961
Yuan X, Asch G, Bataille K, Bock G, Bohm M, Echtler H, Kind R, Oncken O, Wölbern I (2006) Deep seismic images of the southern Andes. In: Kay SM, Ramos V (eds) Evolution of an Andean margin: a tectonic and magmatic view from the Andes to the Neuquén Basin (35°–39°S lat). Geol Soc Am Spec P 407
Zandt G, Velasco AA, Beck SL (1994) Composition and thickness of the southern altiplano crust, Bolivia. Geology 22:1003–1006
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Haschke, M. et al. (2006). Central and Southern Andean Tectonic Evolution Inferred from Arc Magmatism. In: Oncken, O., et al. The Andes. Frontiers in Earth Sciences. Springer, Berlin, Heidelberg . https://doi.org/10.1007/978-3-540-48684-8_16
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