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Molybdenum isotope evidence for widespread anoxia in mid-Proterozoic oceans.
Science. 2004 Apr 02; 304(5667):87-90.Sci

Abstract

How much dissolved oxygen was present in the mid-Proterozoic oceans between 1.8 and 1.0 billion years ago is debated vigorously. One model argues for oxygenation of the oceans soon after the initial rise of atmospheric oxygen approximately 2.3 billion years ago. Recent evidence for H(2)S in some mid-Proterozoic marine basins suggests, however, that the deep ocean remained anoxic until much later. New molybdenum isotope data from modern and ancient sediments indicate expanded anoxia during the mid-Proterozoic compared to the present-day ocean. Consequently, oxygenation of the deep oceans may have lagged that of the atmosphere by over a billion years.

Authors+Show Affiliations

Department of Earth and Environmental Sciences, University of Rochester, Rochester, NY 14627, USA. gail@earth.rochester.eduNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

15066776

Citation

Arnold, G L., et al. "Molybdenum Isotope Evidence for Widespread Anoxia in mid-Proterozoic Oceans." Science (New York, N.Y.), vol. 304, no. 5667, 2004, pp. 87-90.
Arnold GL, Anbar AD, Barling J, et al. Molybdenum isotope evidence for widespread anoxia in mid-Proterozoic oceans. Science. 2004;304(5667):87-90.
Arnold, G. L., Anbar, A. D., Barling, J., & Lyons, T. W. (2004). Molybdenum isotope evidence for widespread anoxia in mid-Proterozoic oceans. Science (New York, N.Y.), 304(5667), 87-90.
Arnold GL, et al. Molybdenum Isotope Evidence for Widespread Anoxia in mid-Proterozoic Oceans. Science. 2004 Apr 2;304(5667):87-90. PubMed PMID: 15066776.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Molybdenum isotope evidence for widespread anoxia in mid-Proterozoic oceans. AU - Arnold,G L, AU - Anbar,A D, AU - Barling,J, AU - Lyons,T W, Y1 - 2004/03/04/ PY - 2004/4/7/pubmed PY - 2004/4/7/medline PY - 2004/4/7/entrez SP - 87 EP - 90 JF - Science (New York, N.Y.) JO - Science VL - 304 IS - 5667 N2 - How much dissolved oxygen was present in the mid-Proterozoic oceans between 1.8 and 1.0 billion years ago is debated vigorously. One model argues for oxygenation of the oceans soon after the initial rise of atmospheric oxygen approximately 2.3 billion years ago. Recent evidence for H(2)S in some mid-Proterozoic marine basins suggests, however, that the deep ocean remained anoxic until much later. New molybdenum isotope data from modern and ancient sediments indicate expanded anoxia during the mid-Proterozoic compared to the present-day ocean. Consequently, oxygenation of the deep oceans may have lagged that of the atmosphere by over a billion years. SN - 1095-9203 UR - https://www.unboundmedicine.com/medline/citation/15066776/Molybdenum_isotope_evidence_for_widespread_anoxia_in_mid_Proterozoic_oceans_ L2 - https:///www.science.org/doi/10.1126/science.1091785?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -
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