Cited by 424Paleontology and Stratigraphy of FossilsGeochemistry and Elemental AnalysisGeological and Geochemical Analysis

New constraints on Precambrian ocean composition

Grotzinger, John P., Kasting, James F.·1993·The Journal of Geology

Abstract

The Precambrian record of carbonate and evaporite sedimentation is equivocal. In contrast to most previous interpretations, it is possible that Archean, Paleoproterozoic, and to a lesser extent, Meso to Neoproterozoic seawater favored surplus abiotic carbonate precipitation, as aragonite and (hi-Mg?) calcite, in comparison to younger times. Furthermore, gypsum/anhydrite may have been only rarely precipitated prior to halite precipitation during evaporation prior to about 1.8 Ga. Two effects may have contributed to these relationships. First, sulfate concentration of seawater may have been critically low prior to about 1.9 Ga so the product mCa++ x mSO4-- would not have produced gypsum before halite, as in the Mesoproterozoic to modern ocean. Second, the bicarbonate to calcium ratio was sufficiently high so that during progressive evaporation of seawater, calcium would have been exhausted before the gypsum field was reached. The pH of the Archean and Paleoproterozoic ocean need not have been significantly different from the modern value of 8.1, even at CO2 partial pressures of a tenth of an atmosphere. Higher CO2 partial pressures require somewhat lower pH values.

Integrity signals

Registry

Crossref · 10.1086/648218

Cites

42 of 42 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The shift in redox conditions is marked foremost by reappearance of evidence for anoxic conditions in very shallow waters and disappearance of sulfate evaporites.

    “This shift in redox conditions is marked foremost by the reappearance of evidence for anoxic conditions in very shallow waters and the disappearance of sulfate evaporites (Canfield 2005, Grotzinger & Kasting 1993).”

    From The History of Ocean Oxygenation (2022) · cites this paper as Grotzinger & Kasting 1993

  • The pH required for greenalite precipitation (7.75-8.3) is at odds with those predicted for Archaean seawater.

    “values that are at odds with those predicted for Archaean seawater (e.g., Grotzinger and Kasting, 1993; Blätter et al., 2016; Halevy and Bachan, 2017).”

    From Iron formations: A global record of Neoarchaean to Palaeoproterozoic environmental history (2017) · cites this paper as Grotzinger and Kasting, 1993

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Grotzinger, J. P., & Kasting, J. F.
Affiliations
Massachusetts Institute of Technology (US)
Venue
The Journal of Geology
Published
1993-03
Volume
101
Issue
2
Pages
235-243
ISSN
  • 0022-1376 (ISSN-L)
  • 1537-5269
OpenAlex
W1965475671
Cited by
424
References
42
Citations by year
2026: 6 · 2025: 10 · 2024: 20 · 2023: 9 · 2022: 6 · 2021: 17 · 2020: 13 · 2019: 12 · 2018: 14 · 2017: 20 · 2016: 21 · 2015: 20 · 2014: 13 · 2013: 24 · 2012: 15
FWCI
7.53
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Geology (publishedVersion)
  • PubMed (publishedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
Funders
National Science Foundation
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
Keywords
carbonate precipitation, evaporite sedimentation, Archean ocean, halite, sulfate content, seawater pH, partial pressure of CO2, aragonite, calcite, evaporative crystallization
MeSH terms
Bicarbonates, Calcium, Calcium Carbonate, Calcium Sulfate, Carbon Dioxide, Biological Evolution, Geology, Hydrogen-Ion Concentration, Minerals, Oceans and Seas, Partial Pressure, Seawater, Sulfates, Silicates, Geological Phenomena

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review