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Orbital forcing of climate 1.4 billion years ago

Zhang, Shuichang; Wang, Xiaomei; Hammarlund, Emma U LU ; Wang, Huajian; Costa, M Mafalda; Bjerrum, Christian J; Connelly, James N; Zhang, Baomin; Bian, Lizeng and Canfield, Donald E (2015) In Proceedings of the National Academy of Sciences of the United States of America 112(12). p.13-1406
Abstract

Fluctuating climate is a hallmark of Earth. As one transcends deep into Earth time, however, both the evidence for and the causes of climate change become difficult to establish. We report geochemical and sedimentological evidence for repeated, short-term climate fluctuations from the exceptionally well-preserved ∼1.4-billion-year-old Xiamaling Formation of the North China Craton. We observe two patterns of climate fluctuations: On long time scales, over what amounts to tens of millions of years, sediments of the Xiamaling Formation record changes in geochemistry consistent with long-term changes in the location of the Xiamaling relative to the position of the Intertropical Convergence Zone. On shorter time scales, and within a... (More)

Fluctuating climate is a hallmark of Earth. As one transcends deep into Earth time, however, both the evidence for and the causes of climate change become difficult to establish. We report geochemical and sedimentological evidence for repeated, short-term climate fluctuations from the exceptionally well-preserved ∼1.4-billion-year-old Xiamaling Formation of the North China Craton. We observe two patterns of climate fluctuations: On long time scales, over what amounts to tens of millions of years, sediments of the Xiamaling Formation record changes in geochemistry consistent with long-term changes in the location of the Xiamaling relative to the position of the Intertropical Convergence Zone. On shorter time scales, and within a precisely calibrated stratigraphic framework, cyclicity in sediment geochemical dynamics is consistent with orbital control. In particular, sediment geochemical fluctuations reflect what appear to be orbitally forced changes in wind patterns and ocean circulation as they influenced rates of organic carbon flux, trace metal accumulation, and the source of detrital particles to the sediment.

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author
publishing date
type
Contribution to journal
publication status
published
keywords
Journal Article, Research Support, Non-U.S. Gov't
in
Proceedings of the National Academy of Sciences of the United States of America
volume
112
issue
12
pages
13 - 1406
publisher
National Acad Sciences
external identifiers
  • scopus:84925387243
ISSN
1091-6490
DOI
10.1073/pnas.1502239112
language
English
LU publication?
no
id
9e4e1a48-7173-49f3-a272-d8c585cc3564
date added to LUP
2017-05-17 11:20:36
date last changed
2017-11-05 05:17:29
@article{9e4e1a48-7173-49f3-a272-d8c585cc3564,
  abstract     = {<p>Fluctuating climate is a hallmark of Earth. As one transcends deep into Earth time, however, both the evidence for and the causes of climate change become difficult to establish. We report geochemical and sedimentological evidence for repeated, short-term climate fluctuations from the exceptionally well-preserved ∼1.4-billion-year-old Xiamaling Formation of the North China Craton. We observe two patterns of climate fluctuations: On long time scales, over what amounts to tens of millions of years, sediments of the Xiamaling Formation record changes in geochemistry consistent with long-term changes in the location of the Xiamaling relative to the position of the Intertropical Convergence Zone. On shorter time scales, and within a precisely calibrated stratigraphic framework, cyclicity in sediment geochemical dynamics is consistent with orbital control. In particular, sediment geochemical fluctuations reflect what appear to be orbitally forced changes in wind patterns and ocean circulation as they influenced rates of organic carbon flux, trace metal accumulation, and the source of detrital particles to the sediment.</p>},
  author       = {Zhang, Shuichang and Wang, Xiaomei and Hammarlund, Emma U and Wang, Huajian and Costa, M Mafalda and Bjerrum, Christian J and Connelly, James N and Zhang, Baomin and Bian, Lizeng and Canfield, Donald E},
  issn         = {1091-6490},
  keyword      = {Journal Article,Research Support, Non-U.S. Gov't},
  language     = {eng},
  month        = {03},
  number       = {12},
  pages        = {13--1406},
  publisher    = {National Acad Sciences},
  series       = {Proceedings of the National Academy of Sciences of the United States of America},
  title        = {Orbital forcing of climate 1.4 billion years ago},
  url          = {http://dx.doi.org/10.1073/pnas.1502239112},
  volume       = {112},
  year         = {2015},
}