Biomarker Evidence for Photosynthesis During
Laterally extensive black shales were deposited on the São Francisco craton in southeastern Brazil during low-latitude Neoproterozoic glaciation È740 to 700 million years ago. These rocks contain up to 3.0 weight % organic carbon, which we interpret as representing the preserved record of abundant...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.496.9446 2023-05-15T18:17:30+02:00 Biomarker Evidence for Photosynthesis During Neoproterozoic Glaciation Alison N. Olcott Alex L. Sessions Frank A. Corsetti Alan J. Kaufman Tolentino Flavio De Oliviera The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.496.9446 http://www.gps.caltech.edu/~als/library/research_articles/2005/olcott2005.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.496.9446 http://www.gps.caltech.edu/~als/library/research_articles/2005/olcott2005.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.gps.caltech.edu/~als/library/research_articles/2005/olcott2005.pdf text ftciteseerx 2016-01-08T08:49:47Z Laterally extensive black shales were deposited on the São Francisco craton in southeastern Brazil during low-latitude Neoproterozoic glaciation È740 to 700 million years ago. These rocks contain up to 3.0 weight % organic carbon, which we interpret as representing the preserved record of abundant marine primary productivity from glacial times. Extractable biomarkers reflect a complex and productive microbial ecosystem, including both phototrophic bacteria and eukaryotes, living in a stratified ocean with thin or absent sea ice, oxic surface waters, and euxinic conditions within the photic zone. Such an environment provides important constraints for parts of the ‘‘Snowball Earth’ ’ hypothesis. The impacts of low-latitude Neoproterozoic glaciation on the biosphere are widely debated (1–6). On one hand, one conception of BSnowball Earth [ envisions sea-ice cover thick enough to preclude photosynthesis over most of Text Sea ice Unknown |
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ftciteseerx |
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English |
description |
Laterally extensive black shales were deposited on the São Francisco craton in southeastern Brazil during low-latitude Neoproterozoic glaciation È740 to 700 million years ago. These rocks contain up to 3.0 weight % organic carbon, which we interpret as representing the preserved record of abundant marine primary productivity from glacial times. Extractable biomarkers reflect a complex and productive microbial ecosystem, including both phototrophic bacteria and eukaryotes, living in a stratified ocean with thin or absent sea ice, oxic surface waters, and euxinic conditions within the photic zone. Such an environment provides important constraints for parts of the ‘‘Snowball Earth’ ’ hypothesis. The impacts of low-latitude Neoproterozoic glaciation on the biosphere are widely debated (1–6). On one hand, one conception of BSnowball Earth [ envisions sea-ice cover thick enough to preclude photosynthesis over most of |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Neoproterozoic Glaciation Alison N. Olcott Alex L. Sessions Frank A. Corsetti Alan J. Kaufman Tolentino Flavio De Oliviera |
spellingShingle |
Neoproterozoic Glaciation Alison N. Olcott Alex L. Sessions Frank A. Corsetti Alan J. Kaufman Tolentino Flavio De Oliviera Biomarker Evidence for Photosynthesis During |
author_facet |
Neoproterozoic Glaciation Alison N. Olcott Alex L. Sessions Frank A. Corsetti Alan J. Kaufman Tolentino Flavio De Oliviera |
author_sort |
Neoproterozoic Glaciation |
title |
Biomarker Evidence for Photosynthesis During |
title_short |
Biomarker Evidence for Photosynthesis During |
title_full |
Biomarker Evidence for Photosynthesis During |
title_fullStr |
Biomarker Evidence for Photosynthesis During |
title_full_unstemmed |
Biomarker Evidence for Photosynthesis During |
title_sort |
biomarker evidence for photosynthesis during |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.496.9446 http://www.gps.caltech.edu/~als/library/research_articles/2005/olcott2005.pdf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
http://www.gps.caltech.edu/~als/library/research_articles/2005/olcott2005.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.496.9446 http://www.gps.caltech.edu/~als/library/research_articles/2005/olcott2005.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766191756173377536 |