{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1363670318191998720.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2006jb004635"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2006JB004635"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2006JB004635"}}],"dc:title":[{"@value":"Determination of rapid Deccan eruptions across the Cretaceous‐Tertiary boundary using paleomagnetic secular variation: Results from a 1200‐m‐thick section in the Mahabaleshwar escarpment"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>Flow‐by‐flow reanalysis of paleomagnetic directions in two sections of the Mahabaleshwar escarpment, coupled with analysis of intertrappean alteration levels shows that volcanism spanned a much shorter time than previously realized. The sections comprise the upper part of magnetic chron C29r, transitional directions and the lowermost part of C29n. Lack of paleosecular variation allows identification of four directional groups, implying very large (40 to 180 m thick) single eruptive events (SEEs) having occurred in a few decades. Paleomagnetism allows temporal constraints upon the formation of 9 out of 23 thin red bole levels found in the sections to no more than a few decades; the two thickest altered layers could have formed in 1 to 50 ka. The typical volumes of SEEs (corresponding to magnetic directional groups) are estimated at 3000 to 20,000 km<jats:sup>3</jats:sup>, with flux rates ∼100 km<jats:sup>3</jats:sup>a<jats:sup>−1</jats:sup>, having lasted for decades. Flood basalt emission can be translated into SO<jats:sub>2</jats:sub>injection rates of several Gt a<jats:sup>−1</jats:sup>, which could have been the main agent of environmental change. The total volume of SO<jats:sub>2</jats:sub>emitted by the larger SEEs could be on the order of that released by the Chicxulub impact. Moreover, each SEE may have injected 10 to 100 times more SO<jats:sub>2</jats:sub>in the atmosphere than the deleterious 1783 Laki eruption. The detailed time sequence of SEEs appears to be the key feature having controlled the extent of climate change. If several SEEs erupted in a short sequence (compared to the equilibration time of the ocean), they could have generated a runaway effect leading to mass extinction.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380861290689307904","@type":"Researcher","foaf:name":[{"@value":"Anne‐Lise Chenet"}],"jpcoar:affiliationName":[{"@value":"Laboratoire de Paléomagnétisme IPGP Paris France"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670318191998722","@type":"Researcher","foaf:name":[{"@value":"Frédéric Fluteau"}],"jpcoar:affiliationName":[{"@value":"Laboratoire de Paléomagnétisme IPGP Paris France"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670318191998720","@type":"Researcher","foaf:name":[{"@value":"Vincent Courtillot"}],"jpcoar:affiliationName":[{"@value":"Laboratoire de Paléomagnétisme IPGP Paris France"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670318191998721","@type":"Researcher","foaf:name":[{"@value":"Martine Gérard"}],"jpcoar:affiliationName":[{"@value":"Institut de Recherche pour le Développement and IMPMC Paris France"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670318191998724","@type":"Researcher","foaf:name":[{"@value":"K. V. Subbarao"}],"jpcoar:affiliationName":[{"@value":"Centre for Earth Science and Space Sciences University of Hyderabad Hyderabad India"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Solid Earth"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2008-04","prism:volume":"113","prism:number":"B4","prism:startingPage":"B04101"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2006JB004635"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2006JB004635"}],"createdAt":"2008-04-29","modifiedAt":"2025-01-29","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360021389816412800","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Paleomagnetic evidence for episodic construction of the Mamiyadake tephra ring"}]},{"@id":"https://cir.nii.ac.jp/crid/1360580229828225408","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Edge‐Driven Convection Melting Before the Emplacement of the Afar Mantle Plume Head Inferred From <sup>40</sup>Ar/<sup>39</sup>Ar Dating"}]},{"@id":"https://cir.nii.ac.jp/crid/1360853567427415552","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"High-resolution palaeomagnetic results of Ethiopian trap series from Lima Limo section: implications for the Oligocene geomagnetic field behaviour and timing of volcanism"}]},{"@id":"https://cir.nii.ac.jp/crid/2051714791867583872","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Paleomagnetic directional groups and paleointensity from the flood basalt in the Tarim large igneous province : implications for eruption frequency"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/2006jb004635"},{"@type":"CROSSREF","@value":"10.1186/s40623-023-01858-9_references_DOI_BGGnduXzjeAGxBCDLiE70EgRIxL"},{"@type":"CROSSREF","@value":"10.21203/rs.3.rs-2094789/v1_references_DOI_BGGnduXzjeAGxBCDLiE70EgRIxL"},{"@type":"CROSSREF","@value":"10.1186/s40623-016-0595-x_references_DOI_BGGnduXzjeAGxBCDLiE70EgRIxL"},{"@type":"CROSSREF","@value":"10.1029/2022gl102560_references_DOI_BGGnduXzjeAGxBCDLiE70EgRIxL"},{"@type":"CROSSREF","@value":"10.1093/gji/ggaa557_references_DOI_IV54uDXttFGKbGe5smdgRguYU3H"}]}