The Search for Biomarkers and Microbial Fossils in Antarctic Rock Microhabitats
12 pages, 3 figures. The survival of lithobiontic microbial communities in Antarctica’s extreme cold, dry environment is conditioned by changes in external climatic conditions that can lead to the death of these microorganisms. In the present study, granite samples from maritime Antarctica and sands...
Published in: | Geomicrobiology Journal |
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Language: | English |
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Taylor & Francis
2003
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Online Access: | http://hdl.handle.net/10261/32004 https://doi.org/10.1080/713851127 |
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ftcsic:oai:digital.csic.es:10261/32004 2024-02-11T09:58:50+01:00 The Search for Biomarkers and Microbial Fossils in Antarctic Rock Microhabitats Ascaso, Carmen Wierzchos, Jacek 2003 http://hdl.handle.net/10261/32004 https://doi.org/10.1080/713851127 en eng Taylor & Francis http://dx.doi.org/10.1080/713851127 Geomicrobiology Journal 20:439-450 (2003) 0149-0451 http://hdl.handle.net/10261/32004 doi:10.1080/713851127 none Antarctic granite and sandstone Biomarkers Crytoendoliths Microbial fossils artículo http://purl.org/coar/resource_type/c_6501 2003 ftcsic https://doi.org/10.1080/713851127 2024-01-16T09:30:09Z 12 pages, 3 figures. The survival of lithobiontic microbial communities in Antarctica’s extreme cold, dry environment is conditioned by changes in external climatic conditions that can lead to the death of these microorganisms. In the present study, granite samples from maritime Antarctica and sandstone from the Antarctic continental desert were collected with the aim of searching for biomarkers and microbial fossils at the microscopic level of observation. The results reveal the presence of inorganic biomarkers in the form of physicochemical bioweathering mineral patterns, and inorganic deposits such as calcium oxalates and silica. The presence of fossilised algae and other microorganisms within the sandstone rock was also confirmed. Identifying the internal cell structure within the fossilised cells is proposed as a new criterion for the biogenicity of biomorphs. Peer reviewed Article in Journal/Newspaper Antarc* Antarctic Antarctica Digital.CSIC (Spanish National Research Council) Antarctic The Antarctic Geomicrobiology Journal 20 5 439 450 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Antarctic granite and sandstone Biomarkers Crytoendoliths Microbial fossils |
spellingShingle |
Antarctic granite and sandstone Biomarkers Crytoendoliths Microbial fossils Ascaso, Carmen Wierzchos, Jacek The Search for Biomarkers and Microbial Fossils in Antarctic Rock Microhabitats |
topic_facet |
Antarctic granite and sandstone Biomarkers Crytoendoliths Microbial fossils |
description |
12 pages, 3 figures. The survival of lithobiontic microbial communities in Antarctica’s extreme cold, dry environment is conditioned by changes in external climatic conditions that can lead to the death of these microorganisms. In the present study, granite samples from maritime Antarctica and sandstone from the Antarctic continental desert were collected with the aim of searching for biomarkers and microbial fossils at the microscopic level of observation. The results reveal the presence of inorganic biomarkers in the form of physicochemical bioweathering mineral patterns, and inorganic deposits such as calcium oxalates and silica. The presence of fossilised algae and other microorganisms within the sandstone rock was also confirmed. Identifying the internal cell structure within the fossilised cells is proposed as a new criterion for the biogenicity of biomorphs. Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Ascaso, Carmen Wierzchos, Jacek |
author_facet |
Ascaso, Carmen Wierzchos, Jacek |
author_sort |
Ascaso, Carmen |
title |
The Search for Biomarkers and Microbial Fossils in Antarctic Rock Microhabitats |
title_short |
The Search for Biomarkers and Microbial Fossils in Antarctic Rock Microhabitats |
title_full |
The Search for Biomarkers and Microbial Fossils in Antarctic Rock Microhabitats |
title_fullStr |
The Search for Biomarkers and Microbial Fossils in Antarctic Rock Microhabitats |
title_full_unstemmed |
The Search for Biomarkers and Microbial Fossils in Antarctic Rock Microhabitats |
title_sort |
search for biomarkers and microbial fossils in antarctic rock microhabitats |
publisher |
Taylor & Francis |
publishDate |
2003 |
url |
http://hdl.handle.net/10261/32004 https://doi.org/10.1080/713851127 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
http://dx.doi.org/10.1080/713851127 Geomicrobiology Journal 20:439-450 (2003) 0149-0451 http://hdl.handle.net/10261/32004 doi:10.1080/713851127 |
op_rights |
none |
op_doi |
https://doi.org/10.1080/713851127 |
container_title |
Geomicrobiology Journal |
container_volume |
20 |
container_issue |
5 |
container_start_page |
439 |
op_container_end_page |
450 |
_version_ |
1790594629529239552 |