Open thermal convection dolomitization: an example from East Yunnan (China)
Dolostones are widely developed in the middle Permian rocks of East Yunnan, China, mainly in the shoal-facies Maokou Formation. The previously reported dolostone formation mechanisms cannot explain the distribution and geochemical characteristics of these dolostones, in particular their strontium, m...
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| Veröffentlicht in: | Geological magazine 2021-02, Vol.158 (2), p.330-348 |
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| creator | Zhang, Jing-Qi Jin, Zhen-Kui Zhu, Xiao-Er Li, Yang Guo, Qi-Heng Shi, Shu-Ting |
| description | Dolostones are widely developed in the middle Permian rocks of East Yunnan, China, mainly in the shoal-facies Maokou Formation. The previously reported dolostone formation mechanisms cannot explain the distribution and geochemical characteristics of these dolostones, in particular their strontium, magnesium and oxygen isotope signatures. To help predict the distribution of dolostone reservoirs and reduce the exploration risk and cost, this study proposes a new model of dolomitization: open thermal convection dolomitization. In this new dolomitization model, Mg2+ in dolomitizing fluids originates mostly from seawater, with a minor component coming from deep hydrothermal fluids. Elevated heat flux (in this case due to the nearby Emei mantle plume) causes spatial temperature variations in the fluid along the circulation flow pathways, resulting in fast and pervasive dolomitization of limestone. The proposed model not only explains the characteristics and distribution of dolostones in the study area but also serves as a reference for predicting the distribution of dolostones in other areas subjected to thermal convection. |
| doi_str_mv | 10.1017/S0016756820000503 |
| format | Article |
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The previously reported dolostone formation mechanisms cannot explain the distribution and geochemical characteristics of these dolostones, in particular their strontium, magnesium and oxygen isotope signatures. To help predict the distribution of dolostone reservoirs and reduce the exploration risk and cost, this study proposes a new model of dolomitization: open thermal convection dolomitization. In this new dolomitization model, Mg2+ in dolomitizing fluids originates mostly from seawater, with a minor component coming from deep hydrothermal fluids. Elevated heat flux (in this case due to the nearby Emei mantle plume) causes spatial temperature variations in the fluid along the circulation flow pathways, resulting in fast and pervasive dolomitization of limestone. The proposed model not only explains the characteristics and distribution of dolostones in the study area but also serves as a reference for predicting the distribution of dolostones in other areas subjected to thermal convection.</description><identifier>ISSN: 0016-7568</identifier><identifier>EISSN: 1469-5081</identifier><identifier>DOI: 10.1017/S0016756820000503</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Asia ; carbonate rocks ; carbonatization ; Cellular convection ; chemical composition ; China ; Computational fluid dynamics ; Convection ; Distribution ; Dolomitization ; Dolostone ; Far East ; Fault lines ; Fluid flow ; fluid inclusions ; Fluids ; Free convection ; Geology ; Geophysics ; Global positioning systems ; GPS ; Heat flux ; Heat transfer ; Hydrocarbons ; igneous and metamorphic rocks ; inclusions ; isotopes ; Liangshan Formation ; Limestone ; Lower Permian ; Magnesium ; mantle ; Mantle plumes ; Maokou Formation ; Mineral resources ; Original Article ; Oxygen isotopes ; Paleozoic ; Permian ; petroleum ; Petrology ; Qixia Formation ; Seawater ; Sedimentary facies ; sedimentary rocks ; Shoals ; solid Earth (tectonophysics) ; stratigraphic units ; Stratigraphy ; Strontium ; Strontium isotopes ; Yunnan China</subject><ispartof>Geological magazine, 2021-02, Vol.158 (2), p.330-348</ispartof><rights>The Author(s), 2020. Published by Cambridge University Press</rights><rights>GeoRef, Copyright 2021, American Geosciences Institute. Reference includes data from GeoScienceWorld @Alexandria, VA @USA @United States. Abstract, Copyright, Cambridge University Press</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a376t-50e91f33e25f5cfd0140d77a8f512158b7fc547c06166c0f44c1a60306dfc3b23</citedby><cites>FETCH-LOGICAL-a376t-50e91f33e25f5cfd0140d77a8f512158b7fc547c06166c0f44c1a60306dfc3b23</cites><orcidid>0000-0003-0413-6290</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.cambridge.org/core/product/identifier/S0016756820000503/type/journal_article$$EHTML$$P50$$Gcambridge$$H</linktohtml><link.rule.ids>164,314,777,781,27905,27906,55609</link.rule.ids></links><search><creatorcontrib>Zhang, Jing-Qi</creatorcontrib><creatorcontrib>Jin, Zhen-Kui</creatorcontrib><creatorcontrib>Zhu, Xiao-Er</creatorcontrib><creatorcontrib>Li, Yang</creatorcontrib><creatorcontrib>Guo, Qi-Heng</creatorcontrib><creatorcontrib>Shi, Shu-Ting</creatorcontrib><title>Open thermal convection dolomitization: an example from East Yunnan (China)</title><title>Geological magazine</title><addtitle>Geol. Mag</addtitle><description>Dolostones are widely developed in the middle Permian rocks of East Yunnan, China, mainly in the shoal-facies Maokou Formation. The previously reported dolostone formation mechanisms cannot explain the distribution and geochemical characteristics of these dolostones, in particular their strontium, magnesium and oxygen isotope signatures. To help predict the distribution of dolostone reservoirs and reduce the exploration risk and cost, this study proposes a new model of dolomitization: open thermal convection dolomitization. In this new dolomitization model, Mg2+ in dolomitizing fluids originates mostly from seawater, with a minor component coming from deep hydrothermal fluids. Elevated heat flux (in this case due to the nearby Emei mantle plume) causes spatial temperature variations in the fluid along the circulation flow pathways, resulting in fast and pervasive dolomitization of limestone. The proposed model not only explains the characteristics and distribution of dolostones in the study area but also serves as a reference for predicting the distribution of dolostones in other areas subjected to thermal convection.</description><subject>Asia</subject><subject>carbonate rocks</subject><subject>carbonatization</subject><subject>Cellular convection</subject><subject>chemical composition</subject><subject>China</subject><subject>Computational fluid dynamics</subject><subject>Convection</subject><subject>Distribution</subject><subject>Dolomitization</subject><subject>Dolostone</subject><subject>Far East</subject><subject>Fault lines</subject><subject>Fluid flow</subject><subject>fluid inclusions</subject><subject>Fluids</subject><subject>Free convection</subject><subject>Geology</subject><subject>Geophysics</subject><subject>Global positioning systems</subject><subject>GPS</subject><subject>Heat flux</subject><subject>Heat transfer</subject><subject>Hydrocarbons</subject><subject>igneous and metamorphic rocks</subject><subject>inclusions</subject><subject>isotopes</subject><subject>Liangshan Formation</subject><subject>Limestone</subject><subject>Lower Permian</subject><subject>Magnesium</subject><subject>mantle</subject><subject>Mantle plumes</subject><subject>Maokou Formation</subject><subject>Mineral resources</subject><subject>Original Article</subject><subject>Oxygen isotopes</subject><subject>Paleozoic</subject><subject>Permian</subject><subject>petroleum</subject><subject>Petrology</subject><subject>Qixia Formation</subject><subject>Seawater</subject><subject>Sedimentary facies</subject><subject>sedimentary rocks</subject><subject>Shoals</subject><subject>solid Earth (tectonophysics)</subject><subject>stratigraphic units</subject><subject>Stratigraphy</subject><subject>Strontium</subject><subject>Strontium isotopes</subject><subject>Yunnan China</subject><issn>0016-7568</issn><issn>1469-5081</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp1UE1LAzEUDKJgrf4AbwEviqy-bDbJ1puU-oGFHtSDpyXNJu2W3WRNtn79erO0oCC-y2OYmTePQeiYwAUBIi4fAQgXjOcpxGFAd9CAZHyUMMjJLhr0dNLz--gghFWEFPJ8gB5mrba4W2rfyBorZ9-06ipncelq11Rd9SV7eIWlxfpDNm2tsfGuwRMZOvyytjYSp-NlZeXZIdozsg76aLuH6Plm8jS-S6az2_vx9TSRVPAufqRHxFCqU2aYMiWQDEohZG4YSQnL58IolgkFnHCuwGSZIpIDBV4aRecpHaKTzd3Wu9e1Dl2xcmtvY2SRZmIUlSQfRRXZqJR3IXhtitZXjfSfBYGi76z401n0nG88C-2CqrRV-t35uvwVACkpIM2yWOAQ0W2CbOa-Khf6R_d_xjfs9nsT</recordid><startdate>202102</startdate><enddate>202102</enddate><creator>Zhang, Jing-Qi</creator><creator>Jin, Zhen-Kui</creator><creator>Zhu, Xiao-Er</creator><creator>Li, Yang</creator><creator>Guo, Qi-Heng</creator><creator>Shi, Shu-Ting</creator><general>Cambridge University Press</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>H96</scope><scope>HCIFZ</scope><scope>L.G</scope><scope>L6V</scope><scope>M2O</scope><scope>M2P</scope><scope>M7S</scope><scope>MBDVC</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>Q9U</scope><scope>R05</scope><orcidid>https://orcid.org/0000-0003-0413-6290</orcidid></search><sort><creationdate>202102</creationdate><title>Open thermal convection dolomitization: an example from East Yunnan (China)</title><author>Zhang, Jing-Qi ; Jin, Zhen-Kui ; Zhu, Xiao-Er ; Li, Yang ; Guo, Qi-Heng ; Shi, Shu-Ting</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a376t-50e91f33e25f5cfd0140d77a8f512158b7fc547c06166c0f44c1a60306dfc3b23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Asia</topic><topic>carbonate rocks</topic><topic>carbonatization</topic><topic>Cellular convection</topic><topic>chemical composition</topic><topic>China</topic><topic>Computational fluid dynamics</topic><topic>Convection</topic><topic>Distribution</topic><topic>Dolomitization</topic><topic>Dolostone</topic><topic>Far East</topic><topic>Fault lines</topic><topic>Fluid flow</topic><topic>fluid inclusions</topic><topic>Fluids</topic><topic>Free convection</topic><topic>Geology</topic><topic>Geophysics</topic><topic>Global positioning systems</topic><topic>GPS</topic><topic>Heat flux</topic><topic>Heat transfer</topic><topic>Hydrocarbons</topic><topic>igneous and metamorphic rocks</topic><topic>inclusions</topic><topic>isotopes</topic><topic>Liangshan Formation</topic><topic>Limestone</topic><topic>Lower Permian</topic><topic>Magnesium</topic><topic>mantle</topic><topic>Mantle plumes</topic><topic>Maokou Formation</topic><topic>Mineral resources</topic><topic>Original Article</topic><topic>Oxygen isotopes</topic><topic>Paleozoic</topic><topic>Permian</topic><topic>petroleum</topic><topic>Petrology</topic><topic>Qixia Formation</topic><topic>Seawater</topic><topic>Sedimentary facies</topic><topic>sedimentary rocks</topic><topic>Shoals</topic><topic>solid Earth (tectonophysics)</topic><topic>stratigraphic units</topic><topic>Stratigraphy</topic><topic>Strontium</topic><topic>Strontium isotopes</topic><topic>Yunnan China</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Jing-Qi</creatorcontrib><creatorcontrib>Jin, Zhen-Kui</creatorcontrib><creatorcontrib>Zhu, Xiao-Er</creatorcontrib><creatorcontrib>Li, Yang</creatorcontrib><creatorcontrib>Guo, Qi-Heng</creatorcontrib><creatorcontrib>Shi, Shu-Ting</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Engineering Collection</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Research Library (Corporate)</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>ProQuest Central Basic</collection><collection>University of Michigan</collection><jtitle>Geological magazine</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Jing-Qi</au><au>Jin, Zhen-Kui</au><au>Zhu, Xiao-Er</au><au>Li, Yang</au><au>Guo, Qi-Heng</au><au>Shi, Shu-Ting</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Open thermal convection dolomitization: an example from East Yunnan (China)</atitle><jtitle>Geological magazine</jtitle><addtitle>Geol. Mag</addtitle><date>2021-02</date><risdate>2021</risdate><volume>158</volume><issue>2</issue><spage>330</spage><epage>348</epage><pages>330-348</pages><issn>0016-7568</issn><eissn>1469-5081</eissn><abstract>Dolostones are widely developed in the middle Permian rocks of East Yunnan, China, mainly in the shoal-facies Maokou Formation. The previously reported dolostone formation mechanisms cannot explain the distribution and geochemical characteristics of these dolostones, in particular their strontium, magnesium and oxygen isotope signatures. To help predict the distribution of dolostone reservoirs and reduce the exploration risk and cost, this study proposes a new model of dolomitization: open thermal convection dolomitization. In this new dolomitization model, Mg2+ in dolomitizing fluids originates mostly from seawater, with a minor component coming from deep hydrothermal fluids. Elevated heat flux (in this case due to the nearby Emei mantle plume) causes spatial temperature variations in the fluid along the circulation flow pathways, resulting in fast and pervasive dolomitization of limestone. The proposed model not only explains the characteristics and distribution of dolostones in the study area but also serves as a reference for predicting the distribution of dolostones in other areas subjected to thermal convection.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.1017/S0016756820000503</doi><tpages>19</tpages><orcidid>https://orcid.org/0000-0003-0413-6290</orcidid></addata></record> |
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| subjects | Asia carbonate rocks carbonatization Cellular convection chemical composition China Computational fluid dynamics Convection Distribution Dolomitization Dolostone Far East Fault lines Fluid flow fluid inclusions Fluids Free convection Geology Geophysics Global positioning systems GPS Heat flux Heat transfer Hydrocarbons igneous and metamorphic rocks inclusions isotopes Liangshan Formation Limestone Lower Permian Magnesium mantle Mantle plumes Maokou Formation Mineral resources Original Article Oxygen isotopes Paleozoic Permian petroleum Petrology Qixia Formation Seawater Sedimentary facies sedimentary rocks Shoals solid Earth (tectonophysics) stratigraphic units Stratigraphy Strontium Strontium isotopes Yunnan China |
| title | Open thermal convection dolomitization: an example from East Yunnan (China) |
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