Early Triassic stromatolites in a siliciclastic nearshore setting in northern Perth Basin, Western Australia: Geobiologic features and implications for post-extinction microbial proliferation
An Early Triassic stromatolite deposit in Gondwana is documented from the Smithian succession of the Lower Triassic Kockatea Shale Formation in the Northampton area, northern Geraldton, Western Australia. Abundant tube-like sheaths of filaments and tiny circular microspherule balls are well preserve...
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Veröffentlicht in: | Global and planetary change 2014-10, Vol.121, p.89-100 |
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description | An Early Triassic stromatolite deposit in Gondwana is documented from the Smithian succession of the Lower Triassic Kockatea Shale Formation in the Northampton area, northern Geraldton, Western Australia. Abundant tube-like sheaths of filaments and tiny circular microspherule balls are well preserved in laminae of the Northampton stromatolites, which are characterized by finely laminated domes and digitate high-relief columns. These filament sheaths are superficially analogous to their counterparts of modern stromatolites, and thus are interpreted as putative fossilized filamentous cyanobacteria. Elemental mapping of EDS analysis shows very high contents of both Fe and Si elements as well as common presence of both S and Al elements along the laminae of the stromatolites, suggesting that the stromatolites may have been ferritized or silicified. Both ferritization and silicification may have played a crucial role in the exceptional preservation of the micro-structures in the Northampton stromatolites. The high content of Al along the laminae indicates that the stromatolites may have been influenced by terrigenous fine-grained clastics during their growth. The Northampton stromatolites show several growth modes, initiating on either pebbles/conglomerates or sandy seafloor and building laminar domes and digitate, high-relief columns during an initial transgression period. Steady increase in sea level facilitated the growth of stromatolites. The Early Triassic stromatolites ceased growth due to either rapid rise in sea level or increased clay influx probably sourced from increased weathering on land at that time, or both. The occurrence of the Northampton stromatolites in the siliciclastic succession, in comparison with published records of Early Triassic microbialites, reveals that post-extinction microbialites were widespread in the Smithian. Stromatolites show a broad geographic distribution from low-latitude to southern high-latitude regions of Gondwana and inhabited not only carbonate settings, but also siliciclastic nearshore settings. All features of these Early Triassic stromatolites indicate a microbial bloom in the aftermath of the P–Tr mass extinction. |
doi_str_mv | 10.1016/j.gloplacha.2014.07.004 |
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Abundant tube-like sheaths of filaments and tiny circular microspherule balls are well preserved in laminae of the Northampton stromatolites, which are characterized by finely laminated domes and digitate high-relief columns. These filament sheaths are superficially analogous to their counterparts of modern stromatolites, and thus are interpreted as putative fossilized filamentous cyanobacteria. Elemental mapping of EDS analysis shows very high contents of both Fe and Si elements as well as common presence of both S and Al elements along the laminae of the stromatolites, suggesting that the stromatolites may have been ferritized or silicified. Both ferritization and silicification may have played a crucial role in the exceptional preservation of the micro-structures in the Northampton stromatolites. The high content of Al along the laminae indicates that the stromatolites may have been influenced by terrigenous fine-grained clastics during their growth. The Northampton stromatolites show several growth modes, initiating on either pebbles/conglomerates or sandy seafloor and building laminar domes and digitate, high-relief columns during an initial transgression period. Steady increase in sea level facilitated the growth of stromatolites. The Early Triassic stromatolites ceased growth due to either rapid rise in sea level or increased clay influx probably sourced from increased weathering on land at that time, or both. The occurrence of the Northampton stromatolites in the siliciclastic succession, in comparison with published records of Early Triassic microbialites, reveals that post-extinction microbialites were widespread in the Smithian. Stromatolites show a broad geographic distribution from low-latitude to southern high-latitude regions of Gondwana and inhabited not only carbonate settings, but also siliciclastic nearshore settings. All features of these Early Triassic stromatolites indicate a microbial bloom in the aftermath of the P–Tr mass extinction.</description><identifier>ISSN: 0921-8181</identifier><identifier>EISSN: 1872-6364</identifier><identifier>DOI: 10.1016/j.gloplacha.2014.07.004</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Aluminum ; Construction ; Cyanobacteria ; Early Triassic ; Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; Filaments ; Fossilized cyanobacteria ; Gondwana ; Invertebrate paleontology ; Laminates ; Microorganisms ; Paleontology ; Perth Basin ; Petrology of sedimentary rocks except quaternary rocks ; Sea level ; Sedimentary rocks ; Sheaths ; Stratigraphy ; Stromatolite ; Western Australia</subject><ispartof>Global and planetary change, 2014-10, Vol.121, p.89-100</ispartof><rights>2014 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c477t-e373513b254100e4f146df392d7cea6cb0fdc92b6d1cfc552102006cb1f127f63</citedby><cites>FETCH-LOGICAL-c477t-e373513b254100e4f146df392d7cea6cb0fdc92b6d1cfc552102006cb1f127f63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.gloplacha.2014.07.004$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28710764$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Chen, Zhong-Qiang</creatorcontrib><creatorcontrib>Wang, Yongbiao</creatorcontrib><creatorcontrib>Kershaw, Stephen</creatorcontrib><creatorcontrib>Luo, Mao</creatorcontrib><creatorcontrib>Yang, Hao</creatorcontrib><creatorcontrib>Zhao, Laishi</creatorcontrib><creatorcontrib>Feng, Yuheng</creatorcontrib><creatorcontrib>Chen, Jianbo</creatorcontrib><creatorcontrib>Yang, Li</creatorcontrib><creatorcontrib>Zhang, Lei</creatorcontrib><title>Early Triassic stromatolites in a siliciclastic nearshore setting in northern Perth Basin, Western Australia: Geobiologic features and implications for post-extinction microbial proliferation</title><title>Global and planetary change</title><description>An Early Triassic stromatolite deposit in Gondwana is documented from the Smithian succession of the Lower Triassic Kockatea Shale Formation in the Northampton area, northern Geraldton, Western Australia. Abundant tube-like sheaths of filaments and tiny circular microspherule balls are well preserved in laminae of the Northampton stromatolites, which are characterized by finely laminated domes and digitate high-relief columns. These filament sheaths are superficially analogous to their counterparts of modern stromatolites, and thus are interpreted as putative fossilized filamentous cyanobacteria. Elemental mapping of EDS analysis shows very high contents of both Fe and Si elements as well as common presence of both S and Al elements along the laminae of the stromatolites, suggesting that the stromatolites may have been ferritized or silicified. Both ferritization and silicification may have played a crucial role in the exceptional preservation of the micro-structures in the Northampton stromatolites. The high content of Al along the laminae indicates that the stromatolites may have been influenced by terrigenous fine-grained clastics during their growth. The Northampton stromatolites show several growth modes, initiating on either pebbles/conglomerates or sandy seafloor and building laminar domes and digitate, high-relief columns during an initial transgression period. Steady increase in sea level facilitated the growth of stromatolites. The Early Triassic stromatolites ceased growth due to either rapid rise in sea level or increased clay influx probably sourced from increased weathering on land at that time, or both. The occurrence of the Northampton stromatolites in the siliciclastic succession, in comparison with published records of Early Triassic microbialites, reveals that post-extinction microbialites were widespread in the Smithian. Stromatolites show a broad geographic distribution from low-latitude to southern high-latitude regions of Gondwana and inhabited not only carbonate settings, but also siliciclastic nearshore settings. All features of these Early Triassic stromatolites indicate a microbial bloom in the aftermath of the P–Tr mass extinction.</description><subject>Aluminum</subject><subject>Construction</subject><subject>Cyanobacteria</subject><subject>Early Triassic</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Filaments</subject><subject>Fossilized cyanobacteria</subject><subject>Gondwana</subject><subject>Invertebrate paleontology</subject><subject>Laminates</subject><subject>Microorganisms</subject><subject>Paleontology</subject><subject>Perth Basin</subject><subject>Petrology of sedimentary rocks except quaternary rocks</subject><subject>Sea level</subject><subject>Sedimentary rocks</subject><subject>Sheaths</subject><subject>Stratigraphy</subject><subject>Stromatolite</subject><subject>Western Australia</subject><issn>0921-8181</issn><issn>1872-6364</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqNkc1uUzEQha8QSITCM-ANEgsSbN8fJ-xCVQpSJVgUsbQmvuNkIscOHqeiT8er4UuqbmFla_Sdczw-TfNayYWSani_X2xDOgZwO1hoqbqFNAspuyfNTC2Nng_t0D1tZnKl1Xyplup584J5L6UyUutZ8_sKcrgXt5mAmZzgktMBSgpUkAVFAYIpkCMXgEsFIkLmXcooGEuhuJ2gmHLZYY7iG9aL-AhM8Z34gVym4fpUXSEQfBDXmDaUQtpWJ49QTrmmQBwFHY41BQqlyMKnLI6Jyxx_1QQ3DcWBXK5aCOKY6-s85r_wy-aZh8D46uG8aL5_urq9_Dy_-Xr95XJ9M3edMdWoNW2v2o3uOyUldl51w-jblR6NQxjcRvrRrfRmGJXzru-1klrKOldeaeOH9qJ5e_at6T9PdTF7IHYYAkRMJ7Zq6HSrWrPs_wPVZmV6vZpQc0brbswZvT1mOkC-t0raqV27t4_t2qldK42t7Vblm4cQYAfBZ4iO-FGul0ZJM0zc-sxh_Zw7wmzZEUaHI2V0xY6J_pn1Bx-mxLo</recordid><startdate>20141001</startdate><enddate>20141001</enddate><creator>Chen, Zhong-Qiang</creator><creator>Wang, Yongbiao</creator><creator>Kershaw, Stephen</creator><creator>Luo, Mao</creator><creator>Yang, Hao</creator><creator>Zhao, Laishi</creator><creator>Feng, Yuheng</creator><creator>Chen, Jianbo</creator><creator>Yang, Li</creator><creator>Zhang, Lei</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7T7</scope><scope>7TG</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>KL.</scope><scope>P64</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20141001</creationdate><title>Early Triassic stromatolites in a siliciclastic nearshore setting in northern Perth Basin, Western Australia: Geobiologic features and implications for post-extinction microbial proliferation</title><author>Chen, Zhong-Qiang ; Wang, Yongbiao ; Kershaw, Stephen ; Luo, Mao ; Yang, Hao ; Zhao, Laishi ; Feng, Yuheng ; Chen, Jianbo ; Yang, Li ; Zhang, Lei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c477t-e373513b254100e4f146df392d7cea6cb0fdc92b6d1cfc552102006cb1f127f63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Aluminum</topic><topic>Construction</topic><topic>Cyanobacteria</topic><topic>Early Triassic</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>Filaments</topic><topic>Fossilized cyanobacteria</topic><topic>Gondwana</topic><topic>Invertebrate paleontology</topic><topic>Laminates</topic><topic>Microorganisms</topic><topic>Paleontology</topic><topic>Perth Basin</topic><topic>Petrology of sedimentary rocks except quaternary rocks</topic><topic>Sea level</topic><topic>Sedimentary rocks</topic><topic>Sheaths</topic><topic>Stratigraphy</topic><topic>Stromatolite</topic><topic>Western Australia</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, Zhong-Qiang</creatorcontrib><creatorcontrib>Wang, Yongbiao</creatorcontrib><creatorcontrib>Kershaw, Stephen</creatorcontrib><creatorcontrib>Luo, Mao</creatorcontrib><creatorcontrib>Yang, Hao</creatorcontrib><creatorcontrib>Zhao, Laishi</creatorcontrib><creatorcontrib>Feng, Yuheng</creatorcontrib><creatorcontrib>Chen, Jianbo</creatorcontrib><creatorcontrib>Yang, Li</creatorcontrib><creatorcontrib>Zhang, Lei</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Global and planetary change</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, Zhong-Qiang</au><au>Wang, Yongbiao</au><au>Kershaw, Stephen</au><au>Luo, Mao</au><au>Yang, Hao</au><au>Zhao, Laishi</au><au>Feng, Yuheng</au><au>Chen, Jianbo</au><au>Yang, Li</au><au>Zhang, Lei</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Early Triassic stromatolites in a siliciclastic nearshore setting in northern Perth Basin, Western Australia: Geobiologic features and implications for post-extinction microbial proliferation</atitle><jtitle>Global and planetary change</jtitle><date>2014-10-01</date><risdate>2014</risdate><volume>121</volume><spage>89</spage><epage>100</epage><pages>89-100</pages><issn>0921-8181</issn><eissn>1872-6364</eissn><abstract>An Early Triassic stromatolite deposit in Gondwana is documented from the Smithian succession of the Lower Triassic Kockatea Shale Formation in the Northampton area, northern Geraldton, Western Australia. Abundant tube-like sheaths of filaments and tiny circular microspherule balls are well preserved in laminae of the Northampton stromatolites, which are characterized by finely laminated domes and digitate high-relief columns. These filament sheaths are superficially analogous to their counterparts of modern stromatolites, and thus are interpreted as putative fossilized filamentous cyanobacteria. Elemental mapping of EDS analysis shows very high contents of both Fe and Si elements as well as common presence of both S and Al elements along the laminae of the stromatolites, suggesting that the stromatolites may have been ferritized or silicified. Both ferritization and silicification may have played a crucial role in the exceptional preservation of the micro-structures in the Northampton stromatolites. The high content of Al along the laminae indicates that the stromatolites may have been influenced by terrigenous fine-grained clastics during their growth. The Northampton stromatolites show several growth modes, initiating on either pebbles/conglomerates or sandy seafloor and building laminar domes and digitate, high-relief columns during an initial transgression period. Steady increase in sea level facilitated the growth of stromatolites. The Early Triassic stromatolites ceased growth due to either rapid rise in sea level or increased clay influx probably sourced from increased weathering on land at that time, or both. The occurrence of the Northampton stromatolites in the siliciclastic succession, in comparison with published records of Early Triassic microbialites, reveals that post-extinction microbialites were widespread in the Smithian. Stromatolites show a broad geographic distribution from low-latitude to southern high-latitude regions of Gondwana and inhabited not only carbonate settings, but also siliciclastic nearshore settings. All features of these Early Triassic stromatolites indicate a microbial bloom in the aftermath of the P–Tr mass extinction.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.gloplacha.2014.07.004</doi><tpages>12</tpages></addata></record> |
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subjects | Aluminum Construction Cyanobacteria Early Triassic Earth sciences Earth, ocean, space Exact sciences and technology Filaments Fossilized cyanobacteria Gondwana Invertebrate paleontology Laminates Microorganisms Paleontology Perth Basin Petrology of sedimentary rocks except quaternary rocks Sea level Sedimentary rocks Sheaths Stratigraphy Stromatolite Western Australia |
title | Early Triassic stromatolites in a siliciclastic nearshore setting in northern Perth Basin, Western Australia: Geobiologic features and implications for post-extinction microbial proliferation |
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