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Post-eruptive sedimentary processes in volcanic crater lakes: implications for deciphering the Samoan sedimentary record

  • A. Fepuleai
  • S. J. Gale
  • N. A. Wales
  • S. P. L. McInerney
  • K. K. Lal
  • B. V. Alloway
Original paper
  • 20 Downloads

Abstract

The two largest islands of the Samoan chain, Savai’i and Upolu, possess almost 400 volcanic cones. Their craters form enclosed, internally drained basins that potentially retain long, detailed and uninterrupted sedimentary sequences. Because of the sparsity, fragmentary nature and low temporal resolution of records of environmental change from the tropical Pacific, these deposits have the potential to fill an important gap in our knowledge of global climatic and environmental change. To interpret such records we must understand the depositional processes that operate in these basins. Unfortunately, although the post-eruptive sedimentology of volcanic calderas and maars is relatively well-established, that of crater lakes remains poorly understood. The volcanic edifice of Mount Lanotō in southeast Upolu was selected for investigation. The form of the volcano and its crater are typical of those observed across the island. The sediments retained in the crater are composed largely of plant-organic-rich muds that display little visible evidence of stratigraphic variation. Mineral magnetic and chemical methods were therefore employed to document the types and distribution of sedimentary facies represented in the post-eruptive crater fill and, by inference, the processes of sedimentation that had operated in the crater. The earliest post-eruptive deposits are the result of the failure of the crater’s oversteepened internal slopes. The crater floor subsequently collapsed to form a pit crater. The basal deposits in the pit crater are likely to be the product of the collapse of its walls and roof. However, the bulk of the material in the feature was laid down under lacustrine conditions. These deposits accumulated in a relatively deep-water environment. Across the rest of the accumulation zone, by contrast, water levels appear to have been shallow. Sedimentation during this phase was dominated by autochthonous plant-organic-rich deposits, with minor fine-grained clastic input. Deposition was intermittently interrupted by localised episodes of mass movement that reworked the regolith mantling the steep internal slopes of the crater into the accumulation zone in the form of low-angle fans. At the broad scale, the sedimentology of Lake Lanotō displays similarities with that of volcanic calderas and maar lakes. However, the morphological simplicity of the basin, the general absence of contemporaneous volcanic activity, the timing of the onset of lacustrine conditions, the derivation of the clastic deposits in the volcanic crater almost solely from the by-products of the volcanic eruption, and the high biological activity in the lake waters mean that there are important differences between the types and distribution of sedimentary facies identified in Lake Lanotō and those represented in models of deposition in maars and volcanic calderas.

Keywords

Pacific Samoa Quaternary Volcanic crater lake Sedimentation Magnetic susceptibility 

Notes

Acknowledgements

AF acknowledges the support of a Graduate Assistant Scholarship from The University of the South Pacific. AF and SJG acknowledge funding from the Faculty of Science, Technology and Environment of The University of the South Pacific. We thank Seulgee Samuelu of the Alafua Campus of The University of the South Pacific for her help in Samoa, and the staff of the School of Agriculture and Food Technology of the Alafua Campus of The University of the South Pacific for granting us permission to use their laboratory facilities. Associate Professor Karoly Németh carefully read an earlier draft of the manuscript and Dr. Art Whistler generously shared with us the results of his botanical survey of the Lake Lanotō basin. We are especially grateful to the Palea Vea family from Lepā in Upolu for their hospitality and for all their help with this project.

References

  1. Büchel G, Pirrung M (1993) Tertiary maars of the Hocheifel Volcanic Field, Germany. In: Negendank JFW, Zolitschka B (eds) Paleolimnology of European maar lakes. Springer, Berlin, pp 447–465CrossRefGoogle Scholar
  2. Burgess SM (ca 1987) The climate and weather of Western Samoa. New Zealand Meteorological Service Miscellaneous Publication 188(8)Google Scholar
  3. Chesner CA (2012) The Toba Caldera Complex. Quat Int 258:5–18CrossRefGoogle Scholar
  4. Christenson BW, Németh K, Rouwet D, Tassi F, Vandemeulebrouck J, Varekamp JC (2015) Volcanic lakes. In: Rouwet D, Christenson BW, Tassi F, Vandemeulebrouck J (eds) Volcanic lakes. Springer, Berlin, pp 1–20Google Scholar
  5. Cohen AS (2003) Paleolimnology: the history and evolution of lake systems. Oxford University Press, New YorkGoogle Scholar
  6. Dana JD (ca 1849) United States exploring expedition. During the years 1838, 1839, 1840, 1841, 1842. Under the command of Charles Wilkes, U.S.N. Geology. G. P. Putnam, New YorkGoogle Scholar
  7. de Wall H, Worm H-U (2000–2001) A cautionary note on interpreting frequency-dependence of susceptibility solely in terms of superparamagnetism or two ways to be wrong. Inst Rock Magn Q 10(4):1, 6–7Google Scholar
  8. Dearing JA (1999) Environmental magnetic susceptibility using the Bartington MS2 system, 2nd edn. Chi Publishing, KenilworthGoogle Scholar
  9. Department of Lands and Survey, Western Samoa (1978) Lepā. Western Samoa Topographical Map 1:20,000 Upolu Sheet 27, 2nd edn. Department of Lands and Survey, Government of Samoa, ApiaGoogle Scholar
  10. EarthRef (2006) Samoan hotspot trail region-130S-1763W–Pacific Ocean predicted bathymetric map. http://erda.sdsc.edu/maps/SAM/JPG/REGION-130S-1763W.std.1380m.ss.map.jpg
  11. Gale SJ, Hoare PG (2011) Quaternary sediments: petrographic methods for the study of unlithified rocks, 2nd edn. Blackburn Press, New JerseyGoogle Scholar
  12. Gale RJB, Gale SJ, Winchester HPM (2006) Inorganic pollution of the sediments of the River Torrens, South Australia. Environ Geol (Berl) 50:62–75CrossRefGoogle Scholar
  13. Goto Y, Matsuzuka S, Kameyama S, Danhara T (2015) Geology and evolution of the Nakajima Islands (Toya Caldera, Hokkaido, Japan) inferred from aerial laser mapping and geological field surveys. Bull Volcanol Soc Jpn 60:17–33Google Scholar
  14. Guo ZF, Liu JQ, Fan QC, He HY, Sui SZ, Chu GQ, Liu Q, Negendank JFW (2005) Source of volcanic ash in the sediments of Sihailongwan maar lake, NE China, and its significance. Acta Petrol Sin 21:251–255Google Scholar
  15. Hart SR, Coetzee M, Workman RK, Blusztajn J, Johnson KTM, Sinton JM, Steinberger B, Hawkins JW (2004) Genesis of the Western Samoa seamount province: age, geochemical fingerprint and tectonics. Earth Planet Sci Lett 227:37–56CrossRefGoogle Scholar
  16. Heiken G, Krier D, McCormick T, Snow MG (2000) Intracaldera volcanism and sedimentation—Creede caldera, Colorado. In: Bethke PM, Hay RL (eds) Ancient Lake Creede: its volcano-tectonic setting, history of sedimentation, and relation to mineralization in the Creede mining district. Geological Society of America Special Paper 346, pp 127–157Google Scholar
  17. Holmgren SU, Ljung K, Björck S (2012) Late Holocene environmental history on Tristan da Cunha, South Atlantic, based on diatom floristic changes and geochemistry in sediments of a volcanic crater lake. J Paleolimnol 47:221–232CrossRefGoogle Scholar
  18. Jiang BY, Fürsich FT, Hethke M (2012) Depositional evolution of the Early Cretaceous Sihetun Lake and implications for regional climatic and volcanic history in western Liaoning, NE China. Sediment Geol 257–260:31–44CrossRefGoogle Scholar
  19. Kear D, Wood BL (1959). The geology and hydrology of Western Samoa. N Z Geol Surv Bull NS 63Google Scholar
  20. Köppen WP (1936) Das geographische system der klimate. In: Köppen WP, Geiger R (eds) Handbuch der klimatologie, band 1, teil C. Gebrüder Borntraeger, BerlinGoogle Scholar
  21. Larsen D, Crossey LJ (1996) Depositional environments and paleolimnology of an ancient caldera lake: Oligocene Creede Formation, Colorado. Geol Soc Am Bull 108:526–544CrossRefGoogle Scholar
  22. Longman J, Veres D, Ersek V, Salzmann U, Hubay K, Bormann M, Wennrich V, Schäbitz F (2017) Periodic input of dust over the Eastern Carpathians during the Holocene linked with Saharan desertification and human impact. Climate of the Past Discussions.  https://doi.org/10.5194/cp-2017-6 Google Scholar
  23. Lorenz V (1973) On the formation of maars. Bull Volcanol (Rome) 37:183–204CrossRefGoogle Scholar
  24. Lorenz V (2007) Syn- and posteruptive hazards of maar–diatreme volcanoes. J Volcanol Geotherm Res 159:285–312CrossRefGoogle Scholar
  25. McDougall I (2010) Age of volcanism and its migration in the Samoa Islands. Geol Mag 147:705–717CrossRefGoogle Scholar
  26. Mena M, Ré GH, Haller MJ, Singer SE, Vilas JF (2006) Paleomagnetism of the late Cenozoic basalts from northern Patagonia. Earth Planets Space 58:1273–1281CrossRefGoogle Scholar
  27. Murphy BS, Gaines RR, Lackey JS (2016) Co-evolution of volcanic and lacustrine systems in Pleistocene Long Valley Caldera, California, U.S.A. J Sediment Res 86:1129–1146CrossRefGoogle Scholar
  28. Natland JH, Turner DL (1985) Age progression and petrological development of Samoan shield volcanoes: evidence from K-Ar ages, lava compositions, and mineral studies. In: Brocher TM (ed) Investigations of the northern Melanesian borderland. Circum-Pacific Council for Energy and Mineral Resources Earth Science Series Volume 3. Circum-Pacific Council for Energy and Mineral Resources, Houston, pp 139–171Google Scholar
  29. Nelson CH, Bacon CR, Robinson SW, Adam DP, Bradbury JP, Barber JH, Schwartz D, Vagenas G (1994) The volcanic, sedimentologic, and paleolimnologic history of the Crater Lake caldera floor, Oregon: evidence for small caldera evolution. Geol Soc Am Bull 106:684–704CrossRefGoogle Scholar
  30. Németh K, Cronin SJ (2008) Volcanic craters, pit craters and high-level magma-feeding systems of a mafic island-arc volcano: Ambrym, Vanuatu, South Pacific. In: Thomson K, Petford N (eds) Structure and emplacement of high-level magmatic systems. Geological Society, London, Special Publications 302, pp 87–102Google Scholar
  31. O’Reilly CM, Sharma S, Gray DK, Hampton SE, Read JS, Rowley RJ, Schneider P, Lenters JD, McIntyre PB, Kraemer BM, Weyhenmeyer GA, Straile D, Dong B, Adrian R, Allan MG, Anneville O, Arvola L, Austin J, Bailey JL, Baron JS, Brookes JD, de Eyto E, Dokulil MT, Hamilton DP, Havens K, Hetherington AL, Higgins SN, Hook S, Izmest’eva LR, Joehnk KD, Kangur K, Kasprzak P, Kumagai M, Kuusisto E, Leshkevich G, Livingstone DM, MacIntyre S, May L, Melack JM, Mueller-Navarra DC, Naumenko M, Noges P, Noges T, North RP, Plisnier P-D, Rigosi A, Rimmer A, Rogora M, Rudstam LG, Rusak JA, Salmaso N, Samal NR, Schindler DE, Schladow SG, Schmid M, Schmidt SR, Silow E, Soylu ME, Teubner K, Verburg P, Voutilainen A, Watkinson A, Williamson CE, Zhang G (2015) Rapid and highly variable warming of lake surface waters around the globe. Geophys Res Lett 42:10,773–10,781CrossRefGoogle Scholar
  32. Öberg H, Andersen TJ, Westerberg L-O, Risberg J, Holmgren K (2012) A diatom record of recent environmental change in Lake Duluti, northern Tanzania. J Paleolimnol 48:401–416CrossRefGoogle Scholar
  33. Okubo CH, Martel SJ (1998) Pit crater formation on Kilauea volcano, Hawaii. J Volcanol Geotherm Res 86:1–18CrossRefGoogle Scholar
  34. Ollier CD (1967) Maars their characteristics, varieties and definition. Bull Volcanol (Heidelberg) 31:45–73CrossRefGoogle Scholar
  35. Otake M (2007) Sedimentary facies, processes and environments of the Akakura caldera lake, the South Kurikoma geothermal area, northeast Japan. J Geol Soc Jpn 113:549–564CrossRefGoogle Scholar
  36. PAGES2k Consortium (2017) A global multiproxy database for temperature reconstructions of the Common Era. Sci Data 4:170088CrossRefGoogle Scholar
  37. Parkes A (1994) Holocene environments and vegetational change on four Polynesian islands. Unpublished Ph.D. thesis, University of Hull, Hull, 204 + 233 ppGoogle Scholar
  38. Pirrung M, Fischer C, Büchel G, Gaupp R, Lutz H, Neuffer F-O (2003) Lithofacies succession of maar crater deposits in the Eifel area (Germany). Terra Nova 15:125–132CrossRefGoogle Scholar
  39. Pollard J-PJ, Sherwood GJ, Böhnel H (1998) Preliminary results from rock magnetic analyses of Quaternary and Tertiary basalts from the Gulf Coast of Mexico. Geol Carpathica 49:5–14Google Scholar
  40. Ross P-S, Delpit S, Haller MJ, Németh K, Corbella H (2011) Influence of the substrate on maar–diatreme volcanoes—an example of a mixed setting from the Pali Aike volcanic field, Argentina. J Volcanol Geotherm Res 201:253–271CrossRefGoogle Scholar
  41. Solofa D, Aung T (2004) Samoa’s 102 year meteorological record and a preliminary study on agricultural product and ENSO variability. South Pac J Nat Sci 22:46–50Google Scholar
  42. Stearns HT (1944) Geology of the Samoan islands. Bull Geol Soc Am 55:1279–1331CrossRefGoogle Scholar
  43. Timms BV (1992) Lake geomorphology. Gleneagles, AdelaideGoogle Scholar
  44. White JDL (1989) Basic elements of maar-crater deposits in the Hopi Buttes volcanic field, northeastern Arizona, USA. J Geol (Chicago) 97:117–125Google Scholar
  45. White JDL (1992) Pliocene subaqueous fans and Gilbert-type deltas in maar crater lakes, Hopi Buttes, Navajo Nation (Arizona), USA. Sedimentology 39:931–946CrossRefGoogle Scholar
  46. White JDL, Ross P-S (2011) Maar-diatreme volcanoes: a review. J Volcanol Geotherm Res 201:1–29CrossRefGoogle Scholar
  47. Workman RK, Hart SR, Jackson MG, Regelous M, Farley KA, Blusztajn J, Kurz M, Staudigel H (2004) Recycled metasomatized lithosphere as the origin of the Enriched Mantle II (EM2) end-member: evidence from the Samoan Volcanic Chain. Geochem Geophys Geosyst 5(4):Q04008.  https://doi.org/10.1029/2003GC000623 CrossRefGoogle Scholar
  48. Wyrick D, Ferrill DA, Morris AP, Colton SL, Sims DW (2004) Distribution, morphology, and origins of Martian pit crater chains. J Geophys Res: Planets 109(E6):E06005.  https://doi.org/10.1029/2004JE002240 CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  • A. Fepuleai
    • 1
  • S. J. Gale
    • 2
  • N. A. Wales
    • 1
  • S. P. L. McInerney
    • 3
  • K. K. Lal
    • 1
  • B. V. Alloway
    • 4
    • 5
  1. 1.School of Geography, Earth Science and EnvironmentThe University of the South PacificSuvaFiji
  2. 2.Department of ArchaeologyThe University of SydneySydneyAustralia
  3. 3.School of EducationUniversity of Technology SydneySydneyAustralia
  4. 4.School of EnvironmentThe University of AucklandAucklandNew Zealand
  5. 5.Centre for Archaeological Science, School of Earth and Environmental SciencesUniversity of WollongongWollongongAustralia

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