Stretching the Envelope of Past Surface Environments: Neoproterozoic Glacial Lakes from Svalbard

被引：84

作者：

Bao, Huiming ^{[1
]}

Fairchild, Ian J. ^{[2
]}

Wynn, Peter M. ^{[3
]}

Spoetl, Christoph ^{[4
]}

机构：

[1] Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA 70803 USA

[2] Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England

[3] Univ Lancaster, Dept Geog, Lancaster LA1 4YQ, England

[4] Univ Innsbruck, Inst Geol & Palaeontol, A-6020 Innsbruck, Austria

来源：

SCIENCE | 2009年 / 323卷 / 5910期

基金：

英国自然环境研究理事会;

关键词：

PYRITE OXIDATION; ISOTOPIC-RATIOS; OXYGEN-ISOTOPE; CO2; LEVELS; SULFATE; SULFUR; SPITSBERGEN; REDUCTION;

D O I：

10.1126/science.1165373

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The oxygen isotope composition of terrestrial sulfate is affected measurably by many Earth- surface processes. During the Neoproterozoic, severe " snowball" glaciations would have had an extreme impact on the biosphere and the atmosphere. Here, we report that sulfate extracted from carbonate lenses within a Neoproterozoic glacial diamictite suite from Svalbard, with an age of similar to 635 million years ago, falls well outside the currently known natural range of triple oxygen isotope compositions and indicates that the atmosphere had either an exceptionally high atmospheric carbon dioxide concentration or an utterly unfamiliar oxygen cycle during deposition of the diamictites.

引用

页码：119 / 122

页数：4

共 25 条

[1] Effects of photorespiration, the cytochrome pathway, and the alternative pathway on the triple isotopic composition of atmospheric O2 -: art. no. 1030 [J].

Angert, A ;

Rachmilevitch, S ;

Barkan, E ;

Luz, B .

GLOBAL BIOGEOCHEMICAL CYCLES, 2003, 17 (01) :30-1

[2] Oxygen and sulfur isotope systematics of sulfate produced by bacterial and abiotic oxidation of pyrite [J].

Balci, Nurgul ;

Shanks, Wayne C., III ;

Mayer, Bernhard ;

Mandernack, Kevin W. .

GEOCHIMICA ET COSMOCHIMICA ACTA, 2007, 71 (15) :3796-3811

[3] Sulfate in modem playa settings and in ash beds in hyperarid deserts:: implication for the origin of 17O-anomalous sulfate in an Oligocene ash bed [J].

Bao, HM .

CHEMICAL GEOLOGY, 2005, 214 (1-2) :127-134

[4] Sulfate oxygen-17 anomaly in an Oligocene ash bed in mid-North America: Was it the dry fogs? [J].

Bao, HM ;

Thiemens, MH ;

Loope, DB ;

Yuan, XL .

GEOPHYSICAL RESEARCH LETTERS, 2003, 30 (16) :1-1

[5] Triple oxygen isotope evidence for elevated CO2 levels after a Neoproterozoic glaciation [J].

Bao, Huiming ;

Lyons, J. R. ;

Zhou, Chuanming .

NATURE, 2008, 453 (7194) :504-506

[6] The five stable isotope compositions of Fig Tree barites: Implications on sulfur cycle in ca. 3.2 Ga oceans [J].

Bao, Huiming ;

Rumble, Douglas, III ;

Lowe, Donald R. .

GEOCHIMICA ET COSMOCHIMICA ACTA, 2007, 71 (20) :4868-4879

[7] THE AGE CURVES OF SULFUR AND OXYGEN ISOTOPES IN MARINE SULFATE AND THEIR MUTUAL INTERPRETATION [J].

CLAYPOOL, GE ;

HOLSER, WT ;

KAPLAN, IR ;

SAKAI, H ;

ZAK, I .

CHEMICAL GEOLOGY, 1980, 28 (3-4) :199-260

[8] CO2 levels required for deglaciation of a "Near-Snowball" Earth [J].

Crowley, TJ ;

Hyde, WT ;

Peltier, WR .

GEOPHYSICAL RESEARCH LETTERS, 2001, 28 (02) :283-286

[9] Stratigraphic, geochronological, and paleomagnetic constraints upon the neoproterozoic climatic paradox [J].

Evans, DAD .

AMERICAN JOURNAL OF SCIENCE, 2000, 300 (05) :347-433

[10] Neoproterozoic glaciation in the earth system [J].

Fairchild, Ian J. ;

Kennedy, Martin J. .

JOURNAL OF THE GEOLOGICAL SOCIETY, 2007, 164 :895-921

← 1 2 3 →