Factors Controlling Organic Matter Enrichment in Alkaline Lacustrine Source Rocks: A Case Study of the Late Paleozoic Fengcheng Formation in the Junggar Basin, NW China
The late Paleozoic Fengcheng Formation shale (LPF shale) in the Junggar Basin, NW China, is the oldest alkaline source rock discovered in the world, providing a unique perspective with which to explore organic matter (OM) enrichment in alkaline lake environments. Combined with the organic carbon iso...
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| Veröffentlicht in: | Acta geologica Sinica (Beijing) 2023-12, Vol.97 (6), p.1744-1755 |
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| creator | HUANG, Renda JIANG, Fujie HU, Tao CHEN, Di HUANG, Liliang LIU, Zheyu WANG, Xiaohao ZHANG, Chenxi LÜ, Jiahao WU, Yuping |
| description | The late Paleozoic Fengcheng Formation shale (LPF shale) in the Junggar Basin, NW China, is the oldest alkaline source rock discovered in the world, providing a unique perspective with which to explore organic matter (OM) enrichment in alkaline lake environments. Combined with the organic carbon isotope profile and paleoenvironmental proxies, this study reveals that the LPF shale was deposited in an arid climate with high salinity and a strong reducing environment, accompanied by frequent volcanic activity. High TOC values are concentrated in two intervals with frequent fluctuations in OM types. A negative excursion due to changes in sedimentary OM source is found in the δ13Corg profile. The excursion corresponds to the OM enrichment interval and is accompanied by abnormally high values of Sr/Ba and Sr/Cu. This implies that the extreme arid climate has led to high salinity, resulting in strong reducibility and changes in paleontological assemblages, which in turn controlled the differential enrichment of OM. The Fengcheng Fm. high‐quality source rocks are the result of the combined action of climatic events, volcanism, high‐salinity water environment and superior hydrocarbon‐generating organisms. The results provide new insights into the formation conditions of terrestrial alkaline high‐quality source rocks and the factors controlling alkaline OM enrichment. |
| doi_str_mv | 10.1111/1755-6724.15057 |
| format | Article |
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Combined with the organic carbon isotope profile and paleoenvironmental proxies, this study reveals that the LPF shale was deposited in an arid climate with high salinity and a strong reducing environment, accompanied by frequent volcanic activity. High TOC values are concentrated in two intervals with frequent fluctuations in OM types. A negative excursion due to changes in sedimentary OM source is found in the δ13Corg profile. The excursion corresponds to the OM enrichment interval and is accompanied by abnormally high values of Sr/Ba and Sr/Cu. This implies that the extreme arid climate has led to high salinity, resulting in strong reducibility and changes in paleontological assemblages, which in turn controlled the differential enrichment of OM. The Fengcheng Fm. high‐quality source rocks are the result of the combined action of climatic events, volcanism, high‐salinity water environment and superior hydrocarbon‐generating organisms. The results provide new insights into the formation conditions of terrestrial alkaline high‐quality source rocks and the factors controlling alkaline OM enrichment.</description><edition>English ed.</edition><identifier>ISSN: 1000-9515</identifier><identifier>EISSN: 1755-6724</identifier><identifier>DOI: 10.1111/1755-6724.15057</identifier><language>eng</language><publisher>Richmond: Wiley Subscription Services, Inc</publisher><subject>alkaline lake source rocks ; Arid climates ; Aridity ; Carbon isotopes ; Climate ; control factors ; Enrichment ; Fengcheng Formation ; Junggar Basin ; Lakes ; Organic carbon ; Organic matter ; organic matter enrichment ; Paleozoic ; Rocks ; Salinity ; Salinity effects ; Sedimentary rocks ; Shale ; Shales ; Strontium ; Total organic carbon ; Volcanic activity ; Volcanism</subject><ispartof>Acta geologica Sinica (Beijing), 2023-12, Vol.97 (6), p.1744-1755</ispartof><rights>2023 Geological Society of China</rights><rights>Copyright © Wanfang Data Co. Ltd. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c3027-e8041fafb536d6e67728220d48a341c4c7663a54f0370e19dbfd7f6e6ce5abc73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://www.wanfangdata.com.cn/images/PeriodicalImages/dzxb-e/dzxb-e.jpg</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2F1755-6724.15057$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2F1755-6724.15057$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids></links><search><creatorcontrib>HUANG, Renda</creatorcontrib><creatorcontrib>JIANG, Fujie</creatorcontrib><creatorcontrib>HU, Tao</creatorcontrib><creatorcontrib>CHEN, Di</creatorcontrib><creatorcontrib>HUANG, Liliang</creatorcontrib><creatorcontrib>LIU, Zheyu</creatorcontrib><creatorcontrib>WANG, Xiaohao</creatorcontrib><creatorcontrib>ZHANG, Chenxi</creatorcontrib><creatorcontrib>LÜ, Jiahao</creatorcontrib><creatorcontrib>WU, Yuping</creatorcontrib><title>Factors Controlling Organic Matter Enrichment in Alkaline Lacustrine Source Rocks: A Case Study of the Late Paleozoic Fengcheng Formation in the Junggar Basin, NW China</title><title>Acta geologica Sinica (Beijing)</title><description>The late Paleozoic Fengcheng Formation shale (LPF shale) in the Junggar Basin, NW China, is the oldest alkaline source rock discovered in the world, providing a unique perspective with which to explore organic matter (OM) enrichment in alkaline lake environments. Combined with the organic carbon isotope profile and paleoenvironmental proxies, this study reveals that the LPF shale was deposited in an arid climate with high salinity and a strong reducing environment, accompanied by frequent volcanic activity. High TOC values are concentrated in two intervals with frequent fluctuations in OM types. A negative excursion due to changes in sedimentary OM source is found in the δ13Corg profile. The excursion corresponds to the OM enrichment interval and is accompanied by abnormally high values of Sr/Ba and Sr/Cu. This implies that the extreme arid climate has led to high salinity, resulting in strong reducibility and changes in paleontological assemblages, which in turn controlled the differential enrichment of OM. The Fengcheng Fm. high‐quality source rocks are the result of the combined action of climatic events, volcanism, high‐salinity water environment and superior hydrocarbon‐generating organisms. The results provide new insights into the formation conditions of terrestrial alkaline high‐quality source rocks and the factors controlling alkaline OM enrichment.</description><subject>alkaline lake source rocks</subject><subject>Arid climates</subject><subject>Aridity</subject><subject>Carbon isotopes</subject><subject>Climate</subject><subject>control factors</subject><subject>Enrichment</subject><subject>Fengcheng Formation</subject><subject>Junggar Basin</subject><subject>Lakes</subject><subject>Organic carbon</subject><subject>Organic matter</subject><subject>organic matter enrichment</subject><subject>Paleozoic</subject><subject>Rocks</subject><subject>Salinity</subject><subject>Salinity effects</subject><subject>Sedimentary rocks</subject><subject>Shale</subject><subject>Shales</subject><subject>Strontium</subject><subject>Total organic carbon</subject><subject>Volcanic activity</subject><subject>Volcanism</subject><issn>1000-9515</issn><issn>1755-6724</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNqFkcFPHCEUxiemTbS2Z68kPfTSUWAG2O1tO3HVZtWmajyStwzMorNggUld_yL_zDJdU49ygC8vv_e9R76iOCD4kORzRARjJRe0PiQMM7FT7P2vvMsaY1xOGWG7xYcY7zDmjBO2VzzPQSUfImq8S8H3vXUdugwdOKvQOaSkAzp2warVWruErEOz_h4ypdEC1BBTGOWVH4LS6JdX9_EbmqEGYi6mod0gb1BajXDS6Cf02j_57DzXrlOrfKG5D2tI1rvReyR_DK7rIKDvEK37ii5uUbOyDj4W7w30UX96efeLm_nxdXNaLi5PzprZolQVpqLUE1wTA2bJKt5yzYWgE0pxW0-gqomqleC8AlYbXAmsybRdmlaYDCrNYKlEtV982fr-AWfAdfIu_83libJ9elxKTTGtMMeEZvLzlnwI_vegY3pF6RRzTkRdj35HW0oFH2PQRj4Eu4awkQTLMTg5xiTHmOS_4HIHf9nA9nrzFi5nzcnVtvEv2UWavQ</recordid><startdate>202312</startdate><enddate>202312</enddate><creator>HUANG, Renda</creator><creator>JIANG, Fujie</creator><creator>HU, Tao</creator><creator>CHEN, Di</creator><creator>HUANG, Liliang</creator><creator>LIU, Zheyu</creator><creator>WANG, Xiaohao</creator><creator>ZHANG, Chenxi</creator><creator>LÜ, Jiahao</creator><creator>WU, Yuping</creator><general>Wiley Subscription Services, Inc</general><general>State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China</general><general>College of Geosciences, China University of Petroleum (Beijing), Beijing 102249, China%Research Institute of Petroleum Exploration and Development, Xinjiang Oilfield Company, CNPC, Karamay, Xinjiang 834000, China</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>KR7</scope><scope>L.G</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>202312</creationdate><title>Factors Controlling Organic Matter Enrichment in Alkaline Lacustrine Source Rocks: A Case Study of the Late Paleozoic Fengcheng Formation in the Junggar Basin, NW China</title><author>HUANG, Renda ; JIANG, Fujie ; HU, Tao ; CHEN, Di ; HUANG, Liliang ; LIU, Zheyu ; WANG, Xiaohao ; ZHANG, Chenxi ; LÜ, Jiahao ; WU, Yuping</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3027-e8041fafb536d6e67728220d48a341c4c7663a54f0370e19dbfd7f6e6ce5abc73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>alkaline lake source rocks</topic><topic>Arid climates</topic><topic>Aridity</topic><topic>Carbon isotopes</topic><topic>Climate</topic><topic>control factors</topic><topic>Enrichment</topic><topic>Fengcheng Formation</topic><topic>Junggar Basin</topic><topic>Lakes</topic><topic>Organic carbon</topic><topic>Organic matter</topic><topic>organic matter enrichment</topic><topic>Paleozoic</topic><topic>Rocks</topic><topic>Salinity</topic><topic>Salinity effects</topic><topic>Sedimentary rocks</topic><topic>Shale</topic><topic>Shales</topic><topic>Strontium</topic><topic>Total organic carbon</topic><topic>Volcanic activity</topic><topic>Volcanism</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>HUANG, Renda</creatorcontrib><creatorcontrib>JIANG, Fujie</creatorcontrib><creatorcontrib>HU, Tao</creatorcontrib><creatorcontrib>CHEN, Di</creatorcontrib><creatorcontrib>HUANG, Liliang</creatorcontrib><creatorcontrib>LIU, Zheyu</creatorcontrib><creatorcontrib>WANG, Xiaohao</creatorcontrib><creatorcontrib>ZHANG, Chenxi</creatorcontrib><creatorcontrib>LÜ, Jiahao</creatorcontrib><creatorcontrib>WU, Yuping</creatorcontrib><collection>CrossRef</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Wanfang Data Journals - Hong Kong</collection><collection>WANFANG Data Centre</collection><collection>Wanfang Data Journals</collection><collection>万方数据期刊 - 香港版</collection><collection>China Online Journals (COJ)</collection><collection>China Online Journals (COJ)</collection><jtitle>Acta geologica Sinica (Beijing)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>HUANG, Renda</au><au>JIANG, Fujie</au><au>HU, Tao</au><au>CHEN, Di</au><au>HUANG, Liliang</au><au>LIU, Zheyu</au><au>WANG, Xiaohao</au><au>ZHANG, Chenxi</au><au>LÜ, Jiahao</au><au>WU, Yuping</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Factors Controlling Organic Matter Enrichment in Alkaline Lacustrine Source Rocks: A Case Study of the Late Paleozoic Fengcheng Formation in the Junggar Basin, NW China</atitle><jtitle>Acta geologica Sinica (Beijing)</jtitle><date>2023-12</date><risdate>2023</risdate><volume>97</volume><issue>6</issue><spage>1744</spage><epage>1755</epage><pages>1744-1755</pages><issn>1000-9515</issn><eissn>1755-6724</eissn><abstract>The late Paleozoic Fengcheng Formation shale (LPF shale) in the Junggar Basin, NW China, is the oldest alkaline source rock discovered in the world, providing a unique perspective with which to explore organic matter (OM) enrichment in alkaline lake environments. Combined with the organic carbon isotope profile and paleoenvironmental proxies, this study reveals that the LPF shale was deposited in an arid climate with high salinity and a strong reducing environment, accompanied by frequent volcanic activity. High TOC values are concentrated in two intervals with frequent fluctuations in OM types. A negative excursion due to changes in sedimentary OM source is found in the δ13Corg profile. The excursion corresponds to the OM enrichment interval and is accompanied by abnormally high values of Sr/Ba and Sr/Cu. This implies that the extreme arid climate has led to high salinity, resulting in strong reducibility and changes in paleontological assemblages, which in turn controlled the differential enrichment of OM. The Fengcheng Fm. high‐quality source rocks are the result of the combined action of climatic events, volcanism, high‐salinity water environment and superior hydrocarbon‐generating organisms. The results provide new insights into the formation conditions of terrestrial alkaline high‐quality source rocks and the factors controlling alkaline OM enrichment.</abstract><cop>Richmond</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1111/1755-6724.15057</doi><tpages>12</tpages><edition>English ed.</edition></addata></record> |
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| subjects | alkaline lake source rocks Arid climates Aridity Carbon isotopes Climate control factors Enrichment Fengcheng Formation Junggar Basin Lakes Organic carbon Organic matter organic matter enrichment Paleozoic Rocks Salinity Salinity effects Sedimentary rocks Shale Shales Strontium Total organic carbon Volcanic activity Volcanism |
| title | Factors Controlling Organic Matter Enrichment in Alkaline Lacustrine Source Rocks: A Case Study of the Late Paleozoic Fengcheng Formation in the Junggar Basin, NW China |
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