Exhuming the Meso-Cenozoic Kyrgyz Tianshan and Siberian Altai-Sayan:A review based on low-temperatur

来源 :Geoscience Frontiers | 被引量 : 0次 | 上传用户:is_youfeeling
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Thermochronological datasets for the Kyrgyz Tianshan and Siberian Altai-Sayan within Central Asia reveal a punctuated exhumation history during the Meso-Cenozoic.In this paper,the datasets for both regions are collectively reviewed in order to speculate on the links between the Meso-Cenozoic exhumation of the continental Eurasian interior and the prevailing tectonic processes at the plate margins.Whereas most of the thermochronological data across both regions document late Jurassic-Cretaceous regional basement cooling,older landscape relics and dissecting fault zones throughout both regions preserve Triassic and Cenozoic events of rapid cooling,respectively.Triassic cooling is thought to reflect the Qjangtang- Eurasia collision and/or rifting/subsidence in the West Siberian basin.Alternatively,this cooling signal could be related with the terminal terrane-amalgamation of the Central Asian Orogenic Belt.For the Kygyz Tianshan,late Jurassic-Cretaceous regional exhumation and Cenozoic fault reactivations can be linked with specific tectonic events during the closure of the Palaeo-Tethys and Neo-Tethys Oceans,respectively.The effect of the progressive consumption of these oceans and the associated collisions of Cimmeria and India with Eurasia probably only had a minor effect on the exhumation of the Siberian Altai-Sayan.More likely,tectonic forces from the east(present-day coordinates) as a result of the building and collapse of the Mongol-Okhotsk orogen and rifting in the Baikal region shaped the current Siberian Altai-Sayan topography.Although many of these hypothesised links need to be tested further,they allow a first-order insight into the dynamic response and the stress propagation pathways from the Eurasian margin into the continental interior. Thermochronological datasets for the Kyrgyz Tianshan and Siberian Altai-Sayan within Central Asia reveal a punctuated exhumation history during the Meso-Cenozoic. In this paper, the datasets for both regions are collectively reviewed in order to speculate on the links between the Meso-Cenozoic exhumation of the continental Eurasian interior and the prevailing tectonic processes at the plate margins .Whereas most of the thermochronological data across both regions document late Jurassic-Cretaceous regional basement cooling, older landscape relics and dissecting fault zones throughout both regions preserve Triassic and Cenozoic events of rapid cooling, respectively.Triassic cooling is thought to reflect the Qjangtang- Eurasia collision and / or rifting / subsidence in the West Siberian basin. Alternatively, this cooling signal could be related with the terminal terrane-amalgamation of the Central Asian Orogenic Belt. For the Kygyz Tianshan, late Jurassic-Cretaceous regional exhumation and Cenozoic fa ult reactivations can be linked with specific tectonic events during the closure of the Palaeo-Tethys and Neo-Tethys Oceans, respectively. The effect of the progressive consumption of these oceans and the associated collisions of Cimmeria and India with Eurasia probably only had a minor effect on the exhumation of the Siberian Altai-Sayan. More likely, tectonic forces from the east (present-day coordinates) as a result of the building and collapse of the Mongol-Okhotsk orogen and rifting in the Baikal region shaped the current Siberian Altai- Sayan topography .Although many of these hypothesised links need to be tested further, they allow a first-order insight into the dynamic response and the stress propagation pathsways from the Eurasian margin into the continental interior.
其他文献
声二了下燕井产成摧东多一、厂长二,︵3一也乒喻多劲攀争夕一子产夭,.3.}53:/代卜、龚准架/r一气3.端登1 33也咐 /一、5 11sob3 3 5 51好久哟)没有…二 唱山(的)叹歌,鲜乒氧l喉
有一种话叫微笑语言,它把阳光洒进人的心间。陌生的人也觉得熟悉,心和心不再遥远。有一种话叫微笑语言,它把真诚送到人的心田。寒冷的天也觉得温暖,J清和情融进春天。啊,微笑
期刊
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
飞翔在你的蓝天里,搏击在你的浪花里。绽开在你的春天里,描绘在你的画图里。啊,祖国,祖国,祖国,我在你的怀抱里,你在我的心坎里。沐浴在你的阳光里,成长在你的雨露里。奔跑在
期刊
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊
西安市人民政府令第58号《西安市人工影响天气管理办法》已经2005年8月15日市人民政府第19次常务会议通过,现予公布,自2005年10月1日起施行。市长孙清云二○○五年八月二十六
一直想说说我对摄影和数码摄影的认识,看了horse的文章,又触动了一下。写写看吧。当然,只是针对那些还在困惑于数码与胶片,傻瓜与手动的那些想严肃摄影又对舆论不知所措的初
科学家的一项研究显示,母语与人的音乐天分有着内在的联系。亚洲语种的人,尤其是中国人,由于母语的关系,理论上更容易产生音乐天才。美国圣地亚哥大学心理学教授戴安娜·道夫
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
摘 要 每一种语言都有它特定的一个语音系统,特有的一套发音规律。本文通过对英语语调的特点和汉英语调的分析,去了解用不同的重音位置来区别词或语的意思,用声调来区别词义和利用语调来表示说话者的态度或口气,逐步掌握英语语调的规律,从而提高英语口语水平。  【关键词】声调;语调;重音  语调(INTONATION)即为说话时声调(PITCH)高低不同,对于世界上所有的语言,用单一不变的声调说话的情况是不复