Simultaneous Miocene Extension and Shortening in the Himalayan Orogen
The South Tibetan detachment system separates the high-grade metamorphic core of the Himalayan orogen from its weakly metamorphosed suprastructure. It is thought to have developed in response to differences in gravitational potential energy produced by crustal thickening across the mountain front. G...
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Veröffentlicht in: | Science (American Association for the Advancement of Science) 1992-11, Vol.258 (5087), p.1466-1470 |
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creator | Hodges, K. V. Parrish, R. R. Housh, T. B. Lux, D. R. Burchfiel, B. C. Royden, L. H. Chen, Z. |
description | The South Tibetan detachment system separates the high-grade metamorphic core of the Himalayan orogen from its weakly metamorphosed suprastructure. It is thought to have developed in response to differences in gravitational potential energy produced by crustal thickening across the mountain front. Geochronologic data from the Rongbuk Valley, north of Qomolangma (Mount Everest) in southern Tibet, demonstrate that at least one segment of the detachment system was active between 19 and 22 million years ago, an interval characterized by large-scale crustal thickening at lower structural levels. These data suggest that decoupling between an extending upper crust and a converging lower crust was an important aspect of Himalayan tectonics in Miocene time. |
doi_str_mv | 10.1126/science.258.5087.1466 |
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V. ; Parrish, R. R. ; Housh, T. B. ; Lux, D. R. ; Burchfiel, B. C. ; Royden, L. H. ; Chen, Z.</creator><creatorcontrib>Hodges, K. V. ; Parrish, R. R. ; Housh, T. B. ; Lux, D. R. ; Burchfiel, B. C. ; Royden, L. H. ; Chen, Z.</creatorcontrib><description>The South Tibetan detachment system separates the high-grade metamorphic core of the Himalayan orogen from its weakly metamorphosed suprastructure. It is thought to have developed in response to differences in gravitational potential energy produced by crustal thickening across the mountain front. Geochronologic data from the Rongbuk Valley, north of Qomolangma (Mount Everest) in southern Tibet, demonstrate that at least one segment of the detachment system was active between 19 and 22 million years ago, an interval characterized by large-scale crustal thickening at lower structural levels. 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These data suggest that decoupling between an extending upper crust and a converging lower crust was an important aspect of Himalayan tectonics in Miocene time.</description><subject>Cooling</subject><subject>Geology</subject><subject>Geology, Stratigraphic</subject><subject>Granite</subject><subject>Metamorphism</subject><subject>Minerals</subject><subject>Miocene</subject><subject>Miocene Epoch</subject><subject>Monazites</subject><subject>Morphotectonics</subject><subject>Orogens</subject><subject>Plutons</subject><subject>Shear zones</subject><subject>Stratigraphy</subject><subject>Tectonics</subject><issn>0036-8075</issn><issn>1095-9203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1992</creationdate><recordtype>article</recordtype><recordid>eNqN0l1r2zAUBmAzNta02z_Yhq_WXdSZPizJuuxClhay5SJlt0KVj10VR-okG9p_PxmHjUAYwRgj6zlCOnqz7CNGc4wJ_xqNBWdgTlg1Z6gSc1xy_iqbYSRZIQmir7MZQpQXFRLsLDuP8RGhNCfp2-wMC8EYRtUsW27tbuh67cAPMf9hvQEH-fK5Bxetd7l2db598CGNrWtz6_L-AfIbu9OdftEu3wTfgnuXvWl0F-H9_nuR3X1f3i1uivVmdbu4XhdaENIXRJKa67LGRJTCsLoGzTVoLKVMb2UqkBwoJ3Xd1E1DS0IR4yW9x4yVmFX0Irucln0K_vcAsVc7Gw103bR9JSjFknI0ys__lalrXGA6wqsJtroDZV3j-6BNOhIE3XkHjU2_rzFNnZSEJl4c4empYWfNMf_lwCfSw3Pf6iFGdbv9eTLd_DqZfludSqvV-oBeHaPGdx20oNJFLjYHnE3cBB9jgEY9hRSL8KIwUmNE1T6iY7PVGFE1RjTVfdpfzXC_g_pf1T6TCXyYwGPsffg7T6oKESHpH4hN51Q</recordid><startdate>19921127</startdate><enddate>19921127</enddate><creator>Hodges, K. 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H.</creatorcontrib><creatorcontrib>Chen, Z.</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>Hodges, K. V.</au><au>Parrish, R. R.</au><au>Housh, T. B.</au><au>Lux, D. R.</au><au>Burchfiel, B. C.</au><au>Royden, L. H.</au><au>Chen, Z.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Simultaneous Miocene Extension and Shortening in the Himalayan Orogen</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><addtitle>Science</addtitle><date>1992-11-27</date><risdate>1992</risdate><volume>258</volume><issue>5087</issue><spage>1466</spage><epage>1470</epage><pages>1466-1470</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><abstract>The South Tibetan detachment system separates the high-grade metamorphic core of the Himalayan orogen from its weakly metamorphosed suprastructure. It is thought to have developed in response to differences in gravitational potential energy produced by crustal thickening across the mountain front. Geochronologic data from the Rongbuk Valley, north of Qomolangma (Mount Everest) in southern Tibet, demonstrate that at least one segment of the detachment system was active between 19 and 22 million years ago, an interval characterized by large-scale crustal thickening at lower structural levels. These data suggest that decoupling between an extending upper crust and a converging lower crust was an important aspect of Himalayan tectonics in Miocene time.</abstract><cop>United States</cop><pub>American Society for the Advancement of Science</pub><pmid>17755108</pmid><doi>10.1126/science.258.5087.1466</doi><tpages>5</tpages></addata></record> |
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source | JSTOR Archive Collection A-Z Listing; American Association for the Advancement of Science |
subjects | Cooling Geology Geology, Stratigraphic Granite Metamorphism Minerals Miocene Miocene Epoch Monazites Morphotectonics Orogens Plutons Shear zones Stratigraphy Tectonics |
title | Simultaneous Miocene Extension and Shortening in the Himalayan Orogen |
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