Neoproterozoic chemostratigraphy

Galen P. Halverson*, Benjamin P. Wade, Matthew T Hurtgen, Karin M. Barovich

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

230 Scopus citations

Abstract

Chemostratigraphy has diverse applications to investigating the rock record, such as reconstructing paleoenvironments, determining the tectonic setting of sedimentary basins, indirect dating, and establishing regional or global correlations. Chemostratigraphy is thus an integral component of many investigations of the ancient sedimentary record. In this contribution, we review the principle inorganic geochemical methods that have been applied to the Neoproterozoic sedimentary record. Analysis of the traditional stable and radiogenic isotope systems, such as δ13C, δ18O, δ34S, and 87Sr/86Sr, is routine, particularly in successions rich in carbonate. These mainstay applications have yielded invaluable data and information bearing on the chronology and evolution of this eventful era in Earth history. Alongside the growing database of traditional data, a series of novel geochemical techniques have given rise to important new models and constraints on Neoproterozoic biogeochemical change. In particular, a range of proxies for water column redox, mainly obtained from black shales, have shed light on the pace and tempo of Neoproterozoic oxygenation and its link to the appearance of early animal evolution. Increased integration of diverse geochemical, sedimentological, and paleontological datasets, and the gradual radiometric calibration of the stratigraphic record promise to bring the details of the evolution of the Neoproterozoic Earth system into ever greater focus.

Original languageEnglish (US)
Pages (from-to)337-350
Number of pages14
JournalPrecambrian Research
Volume182
Issue number4
DOIs
StatePublished - Oct 15 2010

Keywords

  • Carbon isotopes
  • Chemostratigraphy
  • Iron speciation
  • Neodymium isotopes
  • Neoproterozoic
  • Oxygen isotopes
  • Redox
  • Strontium isotopes
  • Sulfur isotopes

ASJC Scopus subject areas

  • Geology
  • Geochemistry and Petrology

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