Strontium isotopic composition of Pliocene and Pleistocene molluscs from emerged marine deposits, North American Arctic

High-precision strontium (Sr) isotopic measurements were obtained for 53 Pliocene and Pleistocene molluscan shells from emerged marine deposits around the coasts of Arctic North America to test whether such data can be used for chronostratigraphic purposes. 87Sr/86Sr ratios from Sr isotopic measurements on many marine fossils from Arctic Ocean borderland sites are broadly consistent with their expected values based on independent age control and on a comparison with the Sr isotopic evolution of seawater recorded in deep-sea cores. All 87Sr/86Sr ratios measured for shells from Middle and Late Pleistocene deposits are consistent with expected values, but only 9 of 22 ratios in shells from older deposits are consistent with independent age estimates. Aberrant 87Sr/86Sr ratios are consistently higher than expected. At Nome, Alaska, and Baffin Island, Canada, all 87Sr/86Sr ratios are higher than expected. Because these shells were formed along the Pacific Ocean and Atlantic Ocean margins, respectively, their h...

[1]  A. Lachenbruch,et al.  Heat flow and subsurface temperature as evidence for basin-scale ground-water flow, North Slope of Alaska , 1992 .

[2]  D. Muhs,et al.  Sr-Isotope Record of Quaternary Marine Terraces on the California Coast and off Hawaii , 1992, Quaternary Research.

[3]  N. Shackleton,et al.  Seawater Sr isotope variation over the past 300 kyr and influence of global climate cycles , 1992, Nature.

[4]  D. Kaufman.  Aminostratigraphy of Pliocene-Pleistocene high-sea-level deposits, Nome coastal plain and adjacent nearshore area, Alaska , 1992 .

[5]  J. Veizer,et al.  sup 18 O/ sup 16 O and sup 13 C/ sup 12 C in lower Paleozoic articulate brachiopods: Implications for the isotopic composition of seawater , 1992 .

[6]  G. Wasserburg,et al.  Uranium-series evidence on diagenesis and hydrology in Pleistocene carbonates of Barbados, West Indies , 1991 .

[7]  T. Quinn,et al.  Sr Isotopic Variation in Shallow Water Carbonate Sequences: Stratigraphic, Chronostratigraphic, and Eustatic Implications of the Record at Enewetak Atoll , 1991 .

[8]  K. Miller,et al.  Comment and Reply on High-latitude application of 87Sr/86Sr: Correlation of Nuwok beds on North Slope, Alaska, to standard Oligocene chronostratigraphy , 1991 .

[9]  K. Miller,et al.  Miocene isotope reference section, Deep Sea Drilling Project Site 608: An evaluation of isotope and biostratigraphic resolution , 1991 .

[10]  U. Brand.  Strontium isotope diagenesis of biogenic aragonite and low-Mg calcite , 1991 .

[11]  V. Barbin,et al.  Cathodoluminescence of Recent biogenic carbonates: environmental and ontogenetic fingerprint , 1991, Geological Magazine.

[12]  D. DePaolo,et al.  High-resolution strontium-isotope stratigraphy and biostratigraphy of the Miocene Monterey Formation, central California , 1991 .

[13]  D. Hodell,et al.  Variations in the strontium isotopic composition of seawater during the Neogene , 1991 .

[14]  D. DePaolo,et al.  Seawater Strontium Isotopic Variations from 2.5 Million Years Ago to the Present , 1990, Science.

[15]  K. Miller,et al.  High-latitude application of 87Sr/86Sr: Correlation of Nuwok beds on North Slope, Alaska, to standard Oligocene chronostratigraphy , 1990 .

[16]  J. Brigham‐Grette,et al.  Late Cenozoic geologic evolution of the Alaskan North Slope and adjacent continental shelves , 1990 .

[17]  J. Brigham‐Grette,et al.  Paleogeographic Significance of Middle Pleistocene Glaciomarine Deposits on Baldwin Peninsula, Northwest Alaska , 1990, Annals of Glaciology.

[18]  P. Smalley,et al.  High-Resolution Dating of Cenozoic Sediments from Northern North Sea Using 87Sr/86Sr Stratigraphy , 1989 .

[19]  Judith A McKenzie,et al.  Strontium isotope stratigraphy and geochemistry of the late Neogene ocean , 1989 .

[20]  J. Edmond,et al.  The strontium isotope budget of the modern ocean , 1989 .

[21]  J. V. Matthews.  New Information On the Flora and Age of the Beaufort Formation, Arctic Archipelago, and Related Tertiary Deposits in Alaska , 1989 .

[22]  J. Brigham‐Grette,et al.  Amino acid geochronology: Resolution and precision in carbonate fossils , 1989 .

[23]  D. Dahl,et al.  The Cenozoic seawater 87Sr/86Sr curve: Data review and implications for correlation of marine strata , 1988 .

[24]  F. Richter,et al.  Diagenesis and Sr isotopic evolution of seawater using data from DSDP 590B and 575 , 1988 .

[25]  K. Miller,et al.  Upper Eocene to Oligocene isotope (87Sr/86Sr, δ18O, δ13C) standard section, Deep Sea Drilling Project Site 522 , 1988 .

[26]  R. Halley,et al.  Strontium-isotope stratigraphy of Enewetak Atoll , 1988 .

[27]  F. Richter,et al.  Numerical models for diagenesis and the Neogene Sr isotopic evolution of seawater from DSDP Site 590B , 1987 .

[28]  Syukuro Manabe,et al.  The influence of continental ice, atmospheric CO2, and land albedo on the climate of the last glacial maximum , 1987 .

[29]  E. Brouwers,et al.  The Beringian ancestry of Phenacomys (Rodentia; Cricetidae) and the beginning of the modern Arctic Ocean borderland biota , 1987 .

[30]  H. Elderfield.  Strontium isotope stratigraphy , 1986 .

[31]  J. Donner,et al.  Carbon and oxygen stable isotope values in shells of Mytilus edulis and Modiolus modiolus from holocene raised beaches at the outer coast of the varanger Peninsula, North Norway , 1986 .

[32]  T. Anderson,et al.  87Sr/86Sr ratios in Permo-Carboniferous sea water from the analyses of well-preserved brachiopod shells , 1986 .

[33]  M. Bender,et al.  Evolution of the Ratio of Strontium-87 to Strontium-86 in Seawater from Cretaceous to Present , 1986, Science.

[34]  D. DePaolo.  Detailed record of the Neogene Sr isotopic evolution of seawater from DSDP Site 590B. [Deep Sea Drilling Project] , 1986 .

[35]  J. Veizer,et al.  Strontium and its isotopes in Canadian rivers: Fluxes and global implications , 1985 .

[36]  D. DePaolo,et al.  High-Resolution Stratigraphy with Strontium Isotopes , 1985, Science.

[37]  M. Bender,et al.  Tracers in the Sea , 1984 .

[38]  P. Choquette,et al.  Diagenesis 5. Limestones: Introduction , 1983 .

[39]  J. Veizer.  Trace elements and isotopes in sedimentary carbonates , 1983 .

[40]  A. Nelson.  Aminostratigraphy of Quaternary marine and glaciomarine sediments, Qivitu Peninsula, Baffin Island , 1982 .

[41]  Y. Gladenkov.  Marine Plio-Pleistocene of Iceland and problems of Its Correlation , 1981, Quaternary Research.

[42]  R. Detterman,et al.  Post-Carboniferous stratigraphy, northeastern Alaska , 1975 .

[43]  J. Andrews.  Recent and fossil growth rates of marine bivalves, Canadian Arctic, and Late-Quaternary Arctic marine environments , 1972 .

[44]  R. F. Black,et al.  Gubik Formation of Quaternary age in northern Alaska , 1964 .