| 塔里木盆地玛扎塔格第四纪沉积环境演变及构造学意义 |
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| 引用本文： | 司家亮,李海兵,裴军令,孙知明,潘家伟,邱祝礼.塔里木盆地玛扎塔格第四纪沉积环境演变及构造学意义[J].岩石学报,2011,27(1):321-332. |
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| 作者姓名： | 司家亮 李海兵 裴军令 孙知明 潘家伟 邱祝礼 |
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| 作者单位： | 中国地质科学院地质研究所,国土资源部大陆动力学实验室,北京 100037;中国地质科学院地质研究所,国土资源部大陆动力学实验室,北京 100037;中国地质科学院地质力学研究所,中国地质科学院古地磁重点实验室,北京 100081;中国地质科学院地质力学研究所,中国地质科学院古地磁重点实验室,北京 100081;中国地质科学院地质研究所,国土资源部大陆动力学实验室,北京 100037;中国地质科学院地质研究所,国土资源部大陆动力学实验室,北京 100037 |
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| 基金项目： | 本文受中石化集团前瞻性研究项目(YPH08110)和中国地质调查局地质调查工作项目(1212010918036、1212010610105)联合资助. |
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| 摘 要： | 塔里木盆地腹地玛扎塔格地区最近发现了完好出露的新生代连续沉积地层,其中第四系主要为细粒湖相沉积,从而提供了最新的来自盆地内部的古气候古环境研究载体。在详细野外考察基础上,沿厚约140m的剖面采集两百多块样品,本文报道了野外考察结果和样品碳氧稳定同位素数据,以期初步探讨盆地新生代晚期环境变化及相应的构造意义。中更新世气候转型期在玛扎塔格地区有清楚显示,主要表现为沉积组合的显著不同,湖相沉积物氧碳同位素数据(δ18O和δ13C)则呈现周期性波动震荡特征,并呈现出明显的反相关特征,尤其剖面最上部出现显著的δ18O负偏和δ13C正偏,可能暗示了一次较为极端的气候异常事件,或说明冰雪融水的影响逐步加深,说明积雪源区向沉积区的扩展。玛扎塔格地区广泛发育的第四纪湖相沉积和山前地带沉积特征明显不同,说明了区域构造运动的显著不均一性,作为西昆仑北缘冲断带的前锋部位,玛扎塔格断裂的最新活动时间为更新世晚期或全新世,且目前可能仍在持续进行。
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| 关 键 词： | 环境演变 构造意义 第四纪 玛扎塔格 塔里木盆地 |
| 收稿时间： | 6/5/2010 12:00:00 AM |
| 修稿时间： | 2010/12/9 0:00:00 |
Sedimentary environment variation and its tectonic significance of Mazar Tagh in the middle Tarim basin |
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| SI JiaLiang,LI HaiBing,PEI JunLing,SUN ZhiMing,PAN JiaWei and QIU ZhuLi.Sedimentary environment variation and its tectonic significance of Mazar Tagh in the middle Tarim basin[J].Acta Petrologica Sinica,2011,27(1):321-332. |
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| Authors: | SI JiaLiang LI HaiBing PEI JunLing SUN ZhiMing PAN JiaWei and QIU ZhuLi |
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| Institution: | Key Laboratory of Continental Dynamics of the Ministry of Land and Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;Key Laboratory of Continental Dynamics of the Ministry of Land and Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;Key Laboratory of Paleomagnetism of Chinese Academy of Geological Sciences, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;Key Laboratory of Paleomagnetism of Chinese Academy of Geological Sciences, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;Key Laboratory of Continental Dynamics of the Ministry of Land and Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;Key Laboratory of Continental Dynamics of the Ministry of Land and Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China |
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| Abstract: | The continuous Cenozoic strata are well outcropped in the Mazar Tagh,the central Tarim basin and the Quaternary are mainly thin lacustrine sediments,which are perfect basis of paleoclimate and paleoenvironment researches.A total of more than two hundreds of bulk samples were collected from the ~140m long sedimentary section.Here the result of field survey together with oxygen and carbon stable isotopic data is given;the paleoenvironment variation and its tectonic significances are also introduced.The Mid-Pl... |
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| Keywords: | Paleoenvironment variation Tectonic significance Quaternary Mazar Tagh Tarim Basin |
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