| NEW PROGRESS ON THE STUDY OF NEOTECTONIC MOVEMENT ON THE NORTHWESTERN TIBETAN PLATEAU |
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| 作者姓名： | Zhang Qingsong |
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| 作者单位： | Institute of Geogaphy CAS，Beijing 100101People's Republic of China |
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| 摘 要： | LIntroductionThenorthwestemTibotanPlateaulvingbetweenWestKunlunandKarakorumMtsisoneoftl1eltigl1est(witi1meanelevationof5OOOm)anddriest(lessti1an2Olnna-'ofarulualprecipitation)areasofthePlateau.Itisalsoaunrecognizableplaceontl1ePlateau.Sincel973,ti1ell1tegratedScientificExpeditiontotheQinghai-Xizang(Tibetan)Plateau(ISEQP)organizedbytl1eCltineseAcademyofScienceshasmadegreatprogessinti1estudyoftl1euPliftingllistoryoftl1ePlateauanditsimpaCtontheenvirorunwtalchanges.Beforel982,ti1emainr…
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NEW PROGRESS ON THE STUDY OF NEOTECTONIC MOVEMENT ON THE NORTHWESTERN TIBETAN PLATEAU |
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| Zhang Qingsong.NEW PROGRESS ON THE STUDY OF NEOTECTONIC MOVEMENT ON THE NORTHWESTERN TIBETAN PLATEAU[J].Journal of Geographical Sciences,1996(3). |
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| Authors: | Zhang Qingsong |
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| Abstract: | Various data obtained from Karakorum-West Kunlun Mts in recent years showed that the northem Tibetan Plateau has been intensely uplifted since early Pleistocene and it is being in a violent rising stage. A total amplitude is estimated to be about 3100~3600 m which is similar to the Himalayas. Mean annual uplift rate along the Yecheng-Shiquanhe highway is computed to be 4.2 mma-1, and the highest rate, 8 mma-1 and 9 mma-1 appears in the Karakorum and on the northem flank of West Kunlun Mts. Recent investigntions along the Faults of the Altyn-Tagh and the Karakorum showed that these faults are very active in Holocene time in features of lateral slip (hundreds of metres) and vertical displacemat (several to dozens metres).According to the results of study on Cenozoic volcanism in the Kunlun Mts, the Quatemary volcanic eruptions are responsive to the southward intraplate subduction from the Tarim Basin which infers that on-going mantle delamination and decollement conpensation melt may exist beneath the northem Tibetan Plateau. |
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| Keywords: | Neotectonic movement northwestem Tibet uplift |
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