The geologic history of seawater pH-Reference-Cited by-同舟云学术

The geologic history of seawater pH

Published:2017-03-10 Issue:6329 Volume:355 Page:1069-1071
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Halevy I.¹^ORCID,Bachan A.²

Affiliation:

1. Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot, Israel.

2. School of Earth, Energy and Environmental Science, Stanford University, Stanford, CA, USA.

Abstract

The long view of ocean pH The acid-base balance of the oceans has been critical in maintaining Earth's habitability and allowing the emergence of early life. Despite this importance, systematic estimates of historical seawater pH are lacking. Halevy and Bachan developed a model of seawater chemistry and pH over time scales exceeding ∼100 million years. Their highly robust probabilistic history of seawater pH and chemistry reflects evolving properties of Earth's atmosphere, oceans, and crust. Seawater pH increased from early Archean values of ∼6.5 to 7.0 to more recent values of ∼7.5 to 9.0 mostly as a result of solar brightening and decreasing interaction between seawater and oceanic crust. Science , this issue p. 1069

Funder

H2020 European Research Council

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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