Terminal Cretaceous Environmental Events
The geologic record of terminal Cretaceous environmental events indicates that iridium and other associated elements were not deposited instantaneously but during a time interval spanning some 10,000 to 100,000 years. The available geologic evidence favors a mantle rather than meteoritic origin for...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 1985-03, Vol.227 (4691), p.1161-1167 |
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| container_title | Science (American Association for the Advancement of Science) |
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| creator | Officer, Charles B. Drake, Charles L. |
| description | The geologic record of terminal Cretaceous environmental events indicates that iridium and other associated elements were not deposited instantaneously but during a time interval spanning some 10,000 to 100,000 years. The available geologic evidence favors a mantle rather than meteoritic origin for these elements. These results are in accord with the scenario of a series of intense eruptive volcanic events occurring during a relatively short geologic time interval and not with the scenario of a single large asteroid impact event. |
| doi_str_mv | 10.1126/science.227.4691.1161 |
| format | Article |
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The available geologic evidence favors a mantle rather than meteoritic origin for these elements. These results are in accord with the scenario of a series of intense eruptive volcanic events occurring during a relatively short geologic time interval and not with the scenario of a single large asteroid impact event.</description><subject>Antimony</subject><subject>Basalt</subject><subject>Bioturbation</subject><subject>Clay fraction</subject><subject>Clays</subject><subject>Cretaceous</subject><subject>Cretaceous period</subject><subject>Geologic time scale</subject><subject>Geology</subject><subject>Geology, Stratigraphic</subject><subject>Geophysical research</subject><subject>Iridium</subject><subject>Mass extinction</subject><subject>Mass extinction theory</subject><subject>Observations</subject><subject>Quartz</subject><subject>Stratigraphy</subject><subject>Volcanism</subject><issn>0036-8075</issn><issn>1095-9203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1985</creationdate><recordtype>article</recordtype><recordid>eNqN0ltLIzEUB_CwrKz18g12F59WQafmMrk9aqlVKPZB3deQyZwpIzMZN5mKfntTW9CFIiUPgZzfORzIH6FfBA8JoeI8uhq8gyGlcpgLTdKrIN_QgGDNM00x-44GGDORKSz5LtqL8RHjVNPsB9olUnKpOBmgk3sIbe1tczQK0FsH3SIejf1zHTrfgu9TYfyc7niAdirbRDhc3_vo4Wp8P7rOprPJzehimllJeJ9VBVeKVlQqKh3otIECKwpMaIkLrRRwUTKea1GKnBdSyVzn1NIKKp0rqgnbR8eruU-h-7eA2Ju2jg6axvrlbkYyRpTWRCf550tJc5V20TzB0xWc2wZM7auuD9bNwUOwTeehqtPzBRNSiPexZxt0OiW0tdvAj__jSfTw0s_tIkZzc3e7rZz93VZeTraUajL9LE83Sdc1DczBpD8czT5rvtIudDEGqMxTqFsbXg3BZpk_s86fSfkzy_yZZf5S3-_1nyyKFsqPrnXgEvi5Ao-x78JHXeicKMXeAIbb238</recordid><startdate>19850308</startdate><enddate>19850308</enddate><creator>Officer, Charles B.</creator><creator>Drake, Charles L.</creator><general>The American Association for the Advancement of Science</general><general>American Association for the Advancement of Science</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8GL</scope><scope>IBG</scope><scope>IOV</scope><scope>ISN</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope></search><sort><creationdate>19850308</creationdate><title>Terminal Cretaceous Environmental Events</title><author>Officer, Charles B. ; Drake, Charles L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a715t-fb5882f27827ce90038ea6b012d0b988e56d35496d645b7874942a2fef9482913</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1985</creationdate><topic>Antimony</topic><topic>Basalt</topic><topic>Bioturbation</topic><topic>Clay fraction</topic><topic>Clays</topic><topic>Cretaceous</topic><topic>Cretaceous period</topic><topic>Geologic time scale</topic><topic>Geology</topic><topic>Geology, Stratigraphic</topic><topic>Geophysical research</topic><topic>Iridium</topic><topic>Mass extinction</topic><topic>Mass extinction theory</topic><topic>Observations</topic><topic>Quartz</topic><topic>Stratigraphy</topic><topic>Volcanism</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Officer, Charles B.</creatorcontrib><creatorcontrib>Drake, Charles L.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Gale In Context: High School</collection><collection>Gale in Context : Biography</collection><collection>Gale in Context : Opposing Viewpoints</collection><collection>Gale In Context: Canada</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Science (American Association for the Advancement of Science)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Officer, Charles B.</au><au>Drake, Charles L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Terminal Cretaceous Environmental Events</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><addtitle>Science</addtitle><date>1985-03-08</date><risdate>1985</risdate><volume>227</volume><issue>4691</issue><spage>1161</spage><epage>1167</epage><pages>1161-1167</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><abstract>The geologic record of terminal Cretaceous environmental events indicates that iridium and other associated elements were not deposited instantaneously but during a time interval spanning some 10,000 to 100,000 years. The available geologic evidence favors a mantle rather than meteoritic origin for these elements. These results are in accord with the scenario of a series of intense eruptive volcanic events occurring during a relatively short geologic time interval and not with the scenario of a single large asteroid impact event.</abstract><cop>United States</cop><pub>The American Association for the Advancement of Science</pub><pmid>17757851</pmid><doi>10.1126/science.227.4691.1161</doi><tpages>7</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0036-8075 |
| ispartof | Science (American Association for the Advancement of Science), 1985-03, Vol.227 (4691), p.1161-1167 |
| issn | 0036-8075 1095-9203 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_733189919 |
| source | American Association for the Advancement of Science; JSTOR |
| subjects | Antimony Basalt Bioturbation Clay fraction Clays Cretaceous Cretaceous period Geologic time scale Geology Geology, Stratigraphic Geophysical research Iridium Mass extinction Mass extinction theory Observations Quartz Stratigraphy Volcanism |
| title | Terminal Cretaceous Environmental Events |
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