Diagenetic formation of gypsum and dolomite in a cold‐water coral mound in the Porcupine Seabight, off Ireland
Identifieur interne : 001A00 ( Istex/Corpus ); précédent : 001999; suivant : 001A01Diagenetic formation of gypsum and dolomite in a cold‐water coral mound in the Porcupine Seabight, off Ireland
Auteurs : Hans Pirlet ; Laura M. Wehrmann ; Benjamin Brunner ; Norbert Frank ; Jan Dewanckele ; David Van Rooij ; Anneleen Foubert ; Rudy Swennen ; Lieven Naudts ; Matthieu Boone ; Veerle Cnudde ; Jean-Pierre HenrietSource :
- Sedimentology [ 0037-0746 ] ; 2010-04.
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Abstract
Authigenic gypsum was found in a gravity core, retrieved from the top of Mound Perseverance, a giant cold‐water coral mound in the Porcupine Basin, off Ireland. The occurrence of gypsum in such an environment is intriguing, because gypsum, a classic evaporitic mineral, is undersaturated with respect to sea water. Sedimentological, petrographic and isotopic evidence point to diagenetic formation of the gypsum, tied to oxidation of sedimentary sulphide minerals (i.e. pyrite). This oxidation is attributed to a phase of increased bottom currents which caused erosion and enhanced inflow of oxidizing fluids into the mound sediments. The oxidation of pyrite produced acidity, causing carbonate dissolution and subsequently leading to pore‐water oversaturation with respect to gypsum and dolomite. Calculations based on the isotopic compositions of gypsum and pyrite reveal that between 21·6% and 28·6% of the sulphate incorporated into the gypsum derived from pyrite oxidation. The dissolution of carbonate increased the porosity in the affected sediment layer but promoted lithification of the sediments at the sediment‐water interface. Thus, authigenic gypsum can serve as a signature for diagenetic oxidation events in carbonate‐rich sediments. These observations demonstrate that fluid flow, steered by environmental factors, has an important effect on the diagenesis of coral mounds.
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DOI: 10.1111/j.1365-3091.2009.01119.x
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The occurrence of gypsum in such an environment is intriguing, because gypsum, a classic evaporitic mineral, is undersaturated with respect to sea water. Sedimentological, petrographic and isotopic evidence point to diagenetic formation of the gypsum, tied to oxidation of sedimentary sulphide minerals (i.e. pyrite). This oxidation is attributed to a phase of increased bottom currents which caused erosion and enhanced inflow of oxidizing fluids into the mound sediments. The oxidation of pyrite produced acidity, causing carbonate dissolution and subsequently leading to pore‐water oversaturation with respect to gypsum and dolomite. Calculations based on the isotopic compositions of gypsum and pyrite reveal that between 21·6% and 28·6% of the sulphate incorporated into the gypsum derived from pyrite oxidation. The dissolution of carbonate increased the porosity in the affected sediment layer but promoted lithification of the sediments at the sediment‐water interface. Thus, authigenic gypsum can serve as a signature for diagenetic oxidation events in carbonate‐rich sediments. These observations demonstrate that fluid flow, steered by environmental factors, has an important effect on the diagenesis of coral mounds.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>HANS PIRLET</name><affiliations><json:string>Renard Centre of Marine Geology, Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium (E‐mail: hans.pirlet@ugent.be)</json:string></affiliations></json:item><json:item><name>LAURA M. WEHRMANN</name><affiliations><json:string>Biogeochemistry Research Group, Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, D‐28359 Bremen, Germany</json:string><json:string>Coral Reef Ecology Work Group, GeoBio‐Center, Ludwig‐Maximilians Universität, Richard‐Wagner‐Strasse 10, D‐80333 München, Germany</json:string></affiliations></json:item><json:item><name>BENJAMIN BRUNNER</name><affiliations><json:string>Biogeochemistry Research Group, Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, D‐28359 Bremen, Germany</json:string></affiliations></json:item><json:item><name>NORBERT FRANK</name><affiliations><json:string>Laboratoire des Sciences du Climat et de L’Environnement (LSCE), Unité Mixte CEA/CNRS/UVSQ, Bat 12, Avenue de la Terrasse, F‐91190 Gif‐sur‐Yvette, France</json:string></affiliations></json:item><json:item><name>JAN DEWANCKELE</name><affiliations><json:string>Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium</json:string><json:string>Department of Subatomic and Radiation Physics, Ghent University, B‐9000 Gent, Belgium</json:string></affiliations></json:item><json:item><name>DAVID VAN ROOIJ</name><affiliations><json:string>Renard Centre of Marine Geology, Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium (E‐mail: hans.pirlet@ugent.be)</json:string></affiliations></json:item><json:item><name>ANNELEEN FOUBERT</name><affiliations><json:string>Department of Earth and Environmental Sciences, Geology, K.U. Leuven, Celestijnenlaan 200E, 3001 Heverlee, Belgium</json:string></affiliations></json:item><json:item><name>RUDY SWENNEN</name><affiliations><json:string>Department of Earth and Environmental Sciences, Geology, K.U. Leuven, Celestijnenlaan 200E, 3001 Heverlee, Belgium</json:string></affiliations></json:item><json:item><name>LIEVEN NAUDTS</name><affiliations><json:string>Renard Centre of Marine Geology, Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium (E‐mail: hans.pirlet@ugent.be)</json:string></affiliations></json:item><json:item><name>MATTHIEU BOONE</name><affiliations><json:string>Department of Subatomic and Radiation Physics, Ghent University, B‐9000 Gent, Belgium</json:string></affiliations></json:item><json:item><name>VEERLE CNUDDE</name><affiliations><json:string>Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium</json:string><json:string>Department of Subatomic and Radiation Physics, Ghent University, B‐9000 Gent, Belgium</json:string></affiliations></json:item><json:item><name>JEAN‐PIERRE HENRIET</name><affiliations><json:string>Renard Centre of Marine Geology, Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium (E‐mail: hans.pirlet@ugent.be)</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>Cold‐water coral</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>dolomite</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>early diagenesis</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>gypsum</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Lophelia</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Porcupine Seabight</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>sulphur isotopes</value></json:item></subject><articleId><json:string>SED1119</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Authigenic gypsum was found in a gravity core, retrieved from the top of Mound Perseverance, a giant cold‐water coral mound in the Porcupine Basin, off Ireland. The occurrence of gypsum in such an environment is intriguing, because gypsum, a classic evaporitic mineral, is undersaturated with respect to sea water. Sedimentological, petrographic and isotopic evidence point to diagenetic formation of the gypsum, tied to oxidation of sedimentary sulphide minerals (i.e. pyrite). This oxidation is attributed to a phase of increased bottom currents which caused erosion and enhanced inflow of oxidizing fluids into the mound sediments. The oxidation of pyrite produced acidity, causing carbonate dissolution and subsequently leading to pore‐water oversaturation with respect to gypsum and dolomite. Calculations based on the isotopic compositions of gypsum and pyrite reveal that between 21·6% and 28·6% of the sulphate incorporated into the gypsum derived from pyrite oxidation. The dissolution of carbonate increased the porosity in the affected sediment layer but promoted lithification of the sediments at the sediment‐water interface. Thus, authigenic gypsum can serve as a signature for diagenetic oxidation events in carbonate‐rich sediments. 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Journal compilation © 2009 International Association of Sedimentologists</p></availability><date>2010</date></publicationStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">Diagenetic formation of gypsum and dolomite in a cold‐water coral mound in the Porcupine Seabight, off Ireland</title><author xml:id="author-1"><persName><forename type="first">HANS</forename><surname>PIRLET</surname></persName><affiliation>Renard Centre of Marine Geology, Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium (E‐mail: hans.pirlet@ugent.be)</affiliation></author><author xml:id="author-2"><persName><forename type="first">LAURA M.</forename><surname>WEHRMANN</surname></persName><affiliation>Biogeochemistry Research Group, Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, D‐28359 Bremen, Germany</affiliation><affiliation>Coral Reef Ecology Work Group, GeoBio‐Center, Ludwig‐Maximilians Universität, Richard‐Wagner‐Strasse 10, D‐80333 München, Germany</affiliation></author><author xml:id="author-3"><persName><forename type="first">BENJAMIN</forename><surname>BRUNNER</surname></persName><affiliation>Biogeochemistry Research Group, Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, D‐28359 Bremen, Germany</affiliation></author><author xml:id="author-4"><persName><forename type="first">NORBERT</forename><surname>FRANK</surname></persName><affiliation>Laboratoire des Sciences du Climat et de L’Environnement (LSCE), Unité Mixte CEA/CNRS/UVSQ, Bat 12, Avenue de la Terrasse, F‐91190 Gif‐sur‐Yvette, France</affiliation></author><author xml:id="author-5"><persName><forename type="first">JAN</forename><surname>DEWANCKELE</surname></persName><affiliation>Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium</affiliation><affiliation>Department of Subatomic and Radiation Physics, Ghent University, B‐9000 Gent, Belgium</affiliation></author><author xml:id="author-6"><persName><forename type="first">DAVID</forename><surname>VAN ROOIJ</surname></persName><affiliation>Renard Centre of Marine Geology, Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium (E‐mail: hans.pirlet@ugent.be)</affiliation></author><author xml:id="author-7"><persName><forename type="first">ANNELEEN</forename><surname>FOUBERT</surname></persName><affiliation>Department of Earth and Environmental Sciences, Geology, K.U. 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The occurrence of gypsum in such an environment is intriguing, because gypsum, a classic evaporitic mineral, is undersaturated with respect to sea water. Sedimentological, petrographic and isotopic evidence point to diagenetic formation of the gypsum, tied to oxidation of sedimentary sulphide minerals (i.e. pyrite). This oxidation is attributed to a phase of increased bottom currents which caused erosion and enhanced inflow of oxidizing fluids into the mound sediments. The oxidation of pyrite produced acidity, causing carbonate dissolution and subsequently leading to pore‐water oversaturation with respect to gypsum and dolomite. Calculations based on the isotopic compositions of gypsum and pyrite reveal that between 21·6% and 28·6% of the sulphate incorporated into the gypsum derived from pyrite oxidation. The dissolution of carbonate increased the porosity in the affected sediment layer but promoted lithification of the sediments at the sediment‐water interface. Thus, authigenic gypsum can serve as a signature for diagenetic oxidation events in carbonate‐rich sediments. These observations demonstrate that fluid flow, steered by environmental factors, has an important effect on the diagenesis of coral mounds.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>keywords</head><item><term>Cold‐water coral</term></item><item><term>dolomite</term></item><item><term>early diagenesis</term></item><item><term>gypsum</term></item><item><term>Lophelia</term></item><item><term>Porcupine Seabight</term></item><item><term>sulphur isotopes</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2010-04">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><original>false</original><mimetype>text/plain</mimetype><extension>txt</extension><uri>https://api.istex.fr/document/B8BCF8269E5BD30429D7E7A256F74A02693AB037/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Publishing Ltd</publisherName><publisherLoc>Oxford, UK</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1365-3091</doi><issn type="print">0037-0746</issn><issn type="electronic">1365-3091</issn><idGroup><id type="product" value="SED"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="SEDIMENTOLOGY">Sedimentology</title></titleGroup></publicationMeta><publicationMeta level="part" position="04103"><doi origin="wiley">10.1111/sed.2010.57.issue-3</doi><numberingGroup><numbering type="journalVolume" number="57">57</numbering><numbering type="journalIssue" number="3">3</numbering></numberingGroup><coverDate startDate="2010-04">April 2010</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="3" status="forIssue"><doi origin="wiley">10.1111/j.1365-3091.2009.01119.x</doi><idGroup><id type="unit" value="SED1119"></id></idGroup><countGroup><count type="pageTotal" number="20"></count></countGroup><titleGroup><title type="tocHeading1">Original articles</title></titleGroup><copyright>© 2009 The Authors. 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Pirlet et al.</i></title><title type="short"><i>Diagenetic gypsum in a cold‐water coral mound</i></title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>HANS</givenNames><familyName>PIRLET</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a2 #a3"><personName><givenNames>LAURA M.</givenNames><familyName>WEHRMANN</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a2"><personName><givenNames>BENJAMIN</givenNames><familyName>BRUNNER</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a4"><personName><givenNames>NORBERT</givenNames><familyName>FRANK</familyName></personName></creator><creator creatorRole="author" xml:id="cr5" affiliationRef="#a5 #a6"><personName><givenNames>JAN</givenNames><familyName>DEWANCKELE</familyName></personName></creator><creator creatorRole="author" xml:id="cr6" affiliationRef="#a1"><personName><givenNames>DAVID</givenNames><familyName>VAN ROOIJ</familyName></personName></creator><creator creatorRole="author" xml:id="cr7" affiliationRef="#a7"><personName><givenNames>ANNELEEN</givenNames><familyName>FOUBERT</familyName></personName></creator><creator creatorRole="author" xml:id="cr8" affiliationRef="#a7"><personName><givenNames>RUDY</givenNames><familyName>SWENNEN</familyName></personName></creator><creator creatorRole="author" xml:id="cr9" affiliationRef="#a1"><personName><givenNames>LIEVEN</givenNames><familyName>NAUDTS</familyName></personName></creator><creator creatorRole="author" xml:id="cr10" affiliationRef="#a6"><personName><givenNames>MATTHIEU</givenNames><familyName>BOONE</familyName></personName></creator><creator creatorRole="author" xml:id="cr11" affiliationRef="#a5 #a6"><personName><givenNames>VEERLE</givenNames><familyName>CNUDDE</familyName></personName></creator><creator creatorRole="author" xml:id="cr12" affiliationRef="#a1"><personName><givenNames>JEAN‐PIERRE</givenNames><familyName>HENRIET</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="BE"><unparsedAffiliation> Renard Centre of Marine Geology, Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium (E‐mail: <email>hans.pirlet@ugent.be</email>)</unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="DE"><unparsedAffiliation>Biogeochemistry Research Group, Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, D‐28359 Bremen, Germany</unparsedAffiliation></affiliation><affiliation xml:id="a3" countryCode="DE"><unparsedAffiliation>Coral Reef Ecology Work Group, GeoBio‐Center, Ludwig‐Maximilians Universität, Richard‐Wagner‐Strasse 10, D‐80333 München, Germany</unparsedAffiliation></affiliation><affiliation xml:id="a4" countryCode="FR"><unparsedAffiliation>Laboratoire des Sciences du Climat et de L’Environnement (LSCE), Unité Mixte CEA/CNRS/UVSQ, Bat 12, Avenue de la Terrasse, F‐91190 Gif‐sur‐Yvette, France</unparsedAffiliation></affiliation><affiliation xml:id="a5" countryCode="BE"><unparsedAffiliation>Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium</unparsedAffiliation></affiliation><affiliation xml:id="a6" countryCode="BE"><unparsedAffiliation>Department of Subatomic and Radiation Physics, Ghent University, B‐9000 Gent, Belgium</unparsedAffiliation></affiliation><affiliation xml:id="a7" countryCode="BE"><unparsedAffiliation>Department of Earth and Environmental Sciences, Geology, K.U. Leuven, Celestijnenlaan 200E, 3001 Heverlee, Belgium</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">Cold‐water coral</keyword><keyword xml:id="k2">dolomite</keyword><keyword xml:id="k3">early diagenesis</keyword><keyword xml:id="k4">gypsum</keyword><keyword xml:id="k5"><i>Lophelia</i></keyword><keyword xml:id="k6">Porcupine Seabight</keyword><keyword xml:id="k7">sulphur isotopes</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Abstract</title><p>Authigenic gypsum was found in a gravity core, retrieved from the top of Mound Perseverance, a giant cold‐water coral mound in the Porcupine Basin, off Ireland. The occurrence of gypsum in such an environment is intriguing, because gypsum, a classic evaporitic mineral, is undersaturated with respect to sea water. Sedimentological, petrographic and isotopic evidence point to diagenetic formation of the gypsum, tied to oxidation of sedimentary sulphide minerals (i.e. pyrite). This oxidation is attributed to a phase of increased bottom currents which caused erosion and enhanced inflow of oxidizing fluids into the mound sediments. The oxidation of pyrite produced acidity, causing carbonate dissolution and subsequently leading to pore‐water oversaturation with respect to gypsum and dolomite. Calculations based on the isotopic compositions of gypsum and pyrite reveal that between 21·6% and 28·6% of the sulphate incorporated into the gypsum derived from pyrite oxidation. The dissolution of carbonate increased the porosity in the affected sediment layer but promoted lithification of the sediments at the sediment‐water interface. Thus, authigenic gypsum can serve as a signature for diagenetic oxidation events in carbonate‐rich sediments. 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Leuven, Celestijnenlaan 200E, 3001 Heverlee, Belgium</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">RUDY</namePart><namePart type="family">SWENNEN</namePart><affiliation>Department of Earth and Environmental Sciences, Geology, K.U. Leuven, Celestijnenlaan 200E, 3001 Heverlee, Belgium</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">LIEVEN</namePart><namePart type="family">NAUDTS</namePart><affiliation>Renard Centre of Marine Geology, Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium (E‐mail: hans.pirlet@ugent.be)</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">MATTHIEU</namePart><namePart type="family">BOONE</namePart><affiliation>Department of Subatomic and Radiation Physics, Ghent University, B‐9000 Gent, Belgium</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">VEERLE</namePart><namePart type="family">CNUDDE</namePart><affiliation>Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium</affiliation><affiliation>Department of Subatomic and Radiation Physics, Ghent University, B‐9000 Gent, Belgium</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">JEAN‐PIERRE</namePart><namePart type="family">HENRIET</namePart><affiliation>Renard Centre of Marine Geology, Department of Geology and Soil Science, Ghent University, Krijgslaan 281 s8, B‐9000 Gent, Belgium (E‐mail: hans.pirlet@ugent.be)</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">2010-04</dateIssued><edition>Manuscript received 13 March 2009; revision accepted 30 September 2009</edition><copyrightDate encoding="w3cdtf">2010</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">11</extent><extent unit="tables">1</extent></physicalDescription><abstract lang="en">Authigenic gypsum was found in a gravity core, retrieved from the top of Mound Perseverance, a giant cold‐water coral mound in the Porcupine Basin, off Ireland. The occurrence of gypsum in such an environment is intriguing, because gypsum, a classic evaporitic mineral, is undersaturated with respect to sea water. Sedimentological, petrographic and isotopic evidence point to diagenetic formation of the gypsum, tied to oxidation of sedimentary sulphide minerals (i.e. pyrite). This oxidation is attributed to a phase of increased bottom currents which caused erosion and enhanced inflow of oxidizing fluids into the mound sediments. The oxidation of pyrite produced acidity, causing carbonate dissolution and subsequently leading to pore‐water oversaturation with respect to gypsum and dolomite. Calculations based on the isotopic compositions of gypsum and pyrite reveal that between 21·6% and 28·6% of the sulphate incorporated into the gypsum derived from pyrite oxidation. The dissolution of carbonate increased the porosity in the affected sediment layer but promoted lithification of the sediments at the sediment‐water interface. Thus, authigenic gypsum can serve as a signature for diagenetic oxidation events in carbonate‐rich sediments. These observations demonstrate that fluid flow, steered by environmental factors, has an important effect on the diagenesis of coral mounds.</abstract><subject lang="en"><genre>keywords</genre><topic>Cold‐water coral</topic><topic>dolomite</topic><topic>early diagenesis</topic><topic>gypsum</topic><topic>Lophelia</topic><topic>Porcupine Seabight</topic><topic>sulphur isotopes</topic></subject><relatedItem type="host"><titleInfo><title>Sedimentology</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0037-0746</identifier><identifier type="eISSN">1365-3091</identifier><identifier type="DOI">10.1111/(ISSN)1365-3091</identifier><identifier type="PublisherID">SED</identifier><part><date>2010</date><detail type="volume"><caption>vol.</caption><number>57</number></detail><detail type="issue"><caption>no.</caption><number>3</number></detail><extent unit="pages"><start>786</start><end>805</end><total>20</total></extent></part></relatedItem><identifier type="istex">B8BCF8269E5BD30429D7E7A256F74A02693AB037</identifier><identifier type="DOI">10.1111/j.1365-3091.2009.01119.x</identifier><identifier type="ArticleID">SED1119</identifier><accessCondition type="use and reproduction" contentType="copyright">© 2009 The Authors. 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