PHANEROZOIC ATMOSPHERIC OXYGEN: NEW RESULTS USING THE GEOCARBSULF MODEL

被引：253

作者：

Berner, Robert A. ^{[1
]}

机构：

[1] Yale Univ, Dept Geol & Geophys, New Haven, CT 06520 USA

来源：

AMERICAN JOURNAL OF SCIENCE | 2009年 / 309卷 / 07期

关键词：

ROCK-FORMING COMPONENTS; CARBON BURIAL; CYCLE; TIME; O-2;

D O I：

10.2475/07.2009.03

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Modifications of the GEOCARBSULF model for Phanerozoic atmospheric oxygen have been made to account for new carbon isotopic data, reconsideration of the fractionation of carbon isotopes between carbonate and organic matter deposited in sediments, and different rates of weathering of volcanic rocks versus granitic rocks. Results indicate distinctly higher O(2) values than GEOCARBSULF for the Mesozoic and Cenozoic, lack of an appreciable drop in O(2) below 15 percent at any time, and a small late Cenozoic decline of O(2) to the present.

引用

页码：603 / 606

页数：4

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