(Table 1) Chemistry of low-mineralized structures from ODP Sample 158-957M-1R-2,10-12
Scanning electron microscopy and microprobe analysis have been used to examine microstructures recovered from a hydrothermal mound at the Trans-Atlantic Geotraverse. Our analyses of hydrothermally precipitated Fe-rich cherts shows strong evidence for silicified microorganisms at depths of less than...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.710994 2024-09-15T18:23:33+00:00 (Table 1) Chemistry of low-mineralized structures from ODP Sample 158-957M-1R-2,10-12 Al-Hanbali, Hakam Sowerby, Stephen J Holm, Nils G LATITUDE: 26.137000 * LONGITUDE: -44.826400 * DATE/TIME START: 1994-11-08T05:00:00 * DATE/TIME END: 1994-11-10T10:30:00 * MINIMUM DEPTH, sediment/rock: 0.63 m * MAXIMUM DEPTH, sediment/rock: 0.63 m 2001 text/tab-separated-values, 216 data points https://doi.pangaea.de/10.1594/PANGAEA.710994 https://doi.org/10.1594/PANGAEA.710994 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.710994 https://doi.org/10.1594/PANGAEA.710994 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Al-Hanbali, Hakam; Sowerby, Stephen J; Holm, Nils G (2001): Biogenicity of silicified microbes from a hydrothermal system: relevance to the search for evidence of life on earth and other planets. Earth and Planetary Science Letters, 191(3-4), 213-218, https://doi.org/10.1016/S0012-821X(01)00421-6 158-957M Calculated Carbon total DEPTH sediment/rock DRILL Drilling/drill rig Electron microprobe (EMP) Iron Joides Resolution Leg158 Nitrogen Nitrogen/Carbon ratio North Atlantic Ocean Ocean Drilling Program ODP Oxygen gas Phosphorus Silicon Sulfur Sulfur/Iron ratio dataset 2001 ftpangaea https://doi.org/10.1594/PANGAEA.71099410.1016/S0012-821X(01)00421-6 2024-08-21T00:02:26Z Scanning electron microscopy and microprobe analysis have been used to examine microstructures recovered from a hydrothermal mound at the Trans-Atlantic Geotraverse. Our analyses of hydrothermally precipitated Fe-rich cherts shows strong evidence for silicified microorganisms at depths of less than 1 m. The criteria for biogenicity are morphological similarities to living bacteria and an elevated carbon and nitrogen content with an N/C ratio consistent with marine microbes. The absence of calcium means they can not be confused with abiological carbonate or sulfate artifacts. As a modern analog of Archean hydrothermal sites, our results are informative about the mode of microbial preservation, and because of the shallow extraction and proximity to distinctive topographical features, investigation of hydrothermal sites should optimize future explorations for detecting past or present life on the surface of Earth and other planets. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-44.826400,-44.826400,26.137000,26.137000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
158-957M Calculated Carbon total DEPTH sediment/rock DRILL Drilling/drill rig Electron microprobe (EMP) Iron Joides Resolution Leg158 Nitrogen Nitrogen/Carbon ratio North Atlantic Ocean Ocean Drilling Program ODP Oxygen gas Phosphorus Silicon Sulfur Sulfur/Iron ratio |
spellingShingle |
158-957M Calculated Carbon total DEPTH sediment/rock DRILL Drilling/drill rig Electron microprobe (EMP) Iron Joides Resolution Leg158 Nitrogen Nitrogen/Carbon ratio North Atlantic Ocean Ocean Drilling Program ODP Oxygen gas Phosphorus Silicon Sulfur Sulfur/Iron ratio Al-Hanbali, Hakam Sowerby, Stephen J Holm, Nils G (Table 1) Chemistry of low-mineralized structures from ODP Sample 158-957M-1R-2,10-12 |
topic_facet |
158-957M Calculated Carbon total DEPTH sediment/rock DRILL Drilling/drill rig Electron microprobe (EMP) Iron Joides Resolution Leg158 Nitrogen Nitrogen/Carbon ratio North Atlantic Ocean Ocean Drilling Program ODP Oxygen gas Phosphorus Silicon Sulfur Sulfur/Iron ratio |
description |
Scanning electron microscopy and microprobe analysis have been used to examine microstructures recovered from a hydrothermal mound at the Trans-Atlantic Geotraverse. Our analyses of hydrothermally precipitated Fe-rich cherts shows strong evidence for silicified microorganisms at depths of less than 1 m. The criteria for biogenicity are morphological similarities to living bacteria and an elevated carbon and nitrogen content with an N/C ratio consistent with marine microbes. The absence of calcium means they can not be confused with abiological carbonate or sulfate artifacts. As a modern analog of Archean hydrothermal sites, our results are informative about the mode of microbial preservation, and because of the shallow extraction and proximity to distinctive topographical features, investigation of hydrothermal sites should optimize future explorations for detecting past or present life on the surface of Earth and other planets. |
format |
Dataset |
author |
Al-Hanbali, Hakam Sowerby, Stephen J Holm, Nils G |
author_facet |
Al-Hanbali, Hakam Sowerby, Stephen J Holm, Nils G |
author_sort |
Al-Hanbali, Hakam |
title |
(Table 1) Chemistry of low-mineralized structures from ODP Sample 158-957M-1R-2,10-12 |
title_short |
(Table 1) Chemistry of low-mineralized structures from ODP Sample 158-957M-1R-2,10-12 |
title_full |
(Table 1) Chemistry of low-mineralized structures from ODP Sample 158-957M-1R-2,10-12 |
title_fullStr |
(Table 1) Chemistry of low-mineralized structures from ODP Sample 158-957M-1R-2,10-12 |
title_full_unstemmed |
(Table 1) Chemistry of low-mineralized structures from ODP Sample 158-957M-1R-2,10-12 |
title_sort |
(table 1) chemistry of low-mineralized structures from odp sample 158-957m-1r-2,10-12 |
publisher |
PANGAEA |
publishDate |
2001 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.710994 https://doi.org/10.1594/PANGAEA.710994 |
op_coverage |
LATITUDE: 26.137000 * LONGITUDE: -44.826400 * DATE/TIME START: 1994-11-08T05:00:00 * DATE/TIME END: 1994-11-10T10:30:00 * MINIMUM DEPTH, sediment/rock: 0.63 m * MAXIMUM DEPTH, sediment/rock: 0.63 m |
long_lat |
ENVELOPE(-44.826400,-44.826400,26.137000,26.137000) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Al-Hanbali, Hakam; Sowerby, Stephen J; Holm, Nils G (2001): Biogenicity of silicified microbes from a hydrothermal system: relevance to the search for evidence of life on earth and other planets. Earth and Planetary Science Letters, 191(3-4), 213-218, https://doi.org/10.1016/S0012-821X(01)00421-6 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.710994 https://doi.org/10.1594/PANGAEA.710994 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.71099410.1016/S0012-821X(01)00421-6 |
_version_ |
1810463783188955136 |