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Low Uplift Rates and Terrace Reoccupation Inferred from Mollusk Aminostratigraphy, Coquimbo Bay Area, Chile

Published online by Cambridge University Press:  20 January 2017

Eric M. Leonard  and
John F. Wehmiller
Eric M. Leonard
Affiliation:
Department of Geology, Colorado College, Colorado Springs, Colorado 80903
John F. Wehmiller
Affiliation:
Department of Geology, University of Delaware, Newark, Delaware 19716
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Abstract

Mollusk aminostratigraphy of Quaternary marine terrace sediments at Coquimbo Bay, Chile, combined with recently available electron spin resonance (ESR) ages, necessitates revision of the northern Chilean relative sea-level and terrace chronology. Protothaca and Mulinia d-alloisoleucine/l-isoleucine values define four aminozones which are consistent with available ESR ages. Terrace reoccupation during successive high sea-level stands is inferred on the basis of litho- and aminostratigraphically defined unconformities in terrace sediments. ESR data and a nonlinear kinetic racemization model give approximate numerical ages for the aminozones and thus yield estimates of net uplift rates. These rates, averaged over intervals of one to several hundred thousand years, have ranged from less than 0.1 m/1000 yr to no more than 0.2 m/1000 yr. Such slow uplift is the cause of terrace reoccupation, as the amount of uplift between successive glacioeustatic high sea-level stands is frequently not sufficient to isolate an earlier-formed abrasion platform from rising sea level during a subsequent high stand.

Type
Research Article
Information
Quaternary Research , Volume 38 , Issue 2 , September 1992 , pp. 246 - 259
Copyright
University of Washington

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References

Bloom, A.L. Yonekura, N. Coastal terraces generated by sea level change and tectonic uplift Woldenberg, M.J. Models in Geomorphology 1985 Allen and Unwin Boston 139 155 Google Scholar
Chappell, J. A revised sea-level record for the last 300,000 years from Papua New Guinea Search 14 1983 99 101 Google Scholar
Chappell, J. Shackleton, N.J. Oxygen isotopes and sea level Nature 324 1986 136 140 Google Scholar
Darwin, C. Geological Observations on South America 1846 Smith, Elder and Company London Google Scholar
Herm, D. Marines Pliozän und Pleistozän in Nord- und Mittel-Chile, unter besonderer Berück-sichtigung der Entwicklung der Mollusken-Faunen Zietteliana 2 1969 1 159 Google Scholar
Herm, D. Paskoff, R. Vorschlag zur Gliederung des marinen Quartärs in Nord- und Mittel-Chile Neues Jahrbuch für Geologie und Paläontologie, Montashefte 10 1967 577 588 Google Scholar
Hoffstetter, R. Fuenzalida, H. Cecioni, G. Lexique Stratigraphique International, America Latine, 7, Chile 1957 Centre National de la Recherche Scientifique Paris Google Scholar
Hsu, J.T. Emerged Quaternary Marine Terraces in Southern Peru: Sea Level Changes and Continental Margin Tectonics over the Subducting Nazca Ridge Unpublished Ph.D. dissertation 1988 Cornell University Google Scholar
Hsu, J.T. Leonard, E.M. Wehmiller, J.F. Aminostratigraphy of Peruvian and Chilean Quaternary marine terrace deposits Quaternary Science Reviews 8 1989 255 262 CrossRefGoogle Scholar
Imbrie, J. Hays, J.D. Martinson, D.G. McIntyre, A. Mix, A.C. Morley, J.J. Pisias, N.G. Prell, W.L. Shackleton, N.J. The orbital theory of Pleistocene climate: Support for a revised chronology of the marine 18O record Berger, A. Milankovitch and Climate 1984 Reidel Dordrecht 269 305 Google Scholar
Kaizuka, S. Matsuda, T. Nogami, M. Yonekura, N. Quaternary tectonic and recent seismic crustal movements in the Arauco Peninsula and its environs Geographical Reports of Tokyo Metropolitan University 8 1973 1 49 Google Scholar
Miller, A. The climate of Chile Schwerdtfeger, W. World Survey of Climatology Volume 12 1976 Elsevier Amsterdam 113 145 The Climates of Central and South America Google Scholar
Miller, G.H. Brigham-Grette, J. Amino acid geochronology: Resolution and precision in carbonate fossils Quaternary International 1 1989 111 128 Google Scholar
Mitterer, R.M. Kriausakul, N. Calibration of amino acid racemization ages based on apparent parabolic kinetics Quaternary Science Review 8 1989 353 357 Google Scholar
Muhs, D.R. Kelsey, H.M. Miller, G.H. Kennedy, G.L. Whelan, J.F. McInelly, G.W. Age estimates and uplift rates for late Pleistocene marine terraces: Southern Oregon portion of the Cascadia Forearc Journal of Geophysical Research 95 1990 6685 6698 Google Scholar
Paskoff, R. Recherches Géomorphologiques dans le Chili semi-aride 1970 Biscaye Frères Bordeaux Google Scholar
Paskoff, R. Radiocarbon dating of marine shells taken from the north and central coast of Chile Abstracts, 9th Congress of the International Union for Quaternary Resarch Christchurch, New Zealand 1973 281 282 Google Scholar
Paskoff, R. The Quaternary of Chile: The state of research Quaternary Research 8 1977 2 31 Google Scholar
Radtke, U. Paleo sea levels and discrimination of the last and the Penultimate interglacial fossiliferous deposits by absolute dating methods and geomorphic investigations; illustrated by marine terraces in Chile Berliner Geographische Studien 25 1987 313 342 Google Scholar
Radte, U. Marine terrassen und korallenriffe—das problem der quartären meeresspiegelschwankungen erläutert aus Chile, Argentinien und Barbados Düsseldorfer Geographische Schriften 27 1989 Google Scholar
Shackleton, N.J. Oxygen isotopes, ice volumes and sea level Quaternary Science Reviews 6 1987 183 190 Google Scholar
Vacher, H.L. Hearty, P. History of stage 5 sea level in Bermuda: Review with new evidence of a brief rise to present sea level during substage 5a Quaternary Science Reviews 8 1989 159 168 CrossRefGoogle Scholar
Wehmiller, J.F. Amino acid racemization: Applications in chemical taxonomy and chronostratigraphy of Quaternary fossils Carter, J.G. Skeletal biomineralization: Patterns, processes, and evolutionary trends vol. 1 1990 Van Nostrand Reinhold New York 583 608 Google Scholar
Wehmiller, J.F. Belknap, D.F. Boutin, B.S. Mirecki, J.E. Rahaim, S.D. York, L.L. A review of the aminostratigraphy of Quaternary mollusks from United States coastal plain sites Easterbrook, D.L. Quaternary dating methods Geological Society of America Special Paper 227 1988 69 110 Google Scholar
York, L.L. Wehmiller, J.F. Cronin, T.M. Ager, T.A. Stetson Pit, Dare County, North Carolina: An integrated chronologic, fauna, and floral record of subsurface coastal Quaternary sediments Palaeogeography, Palaeoclimatology, Palaeoecology 72 1989 115 132 Google Scholar