塔西南第三纪坳陷的沉积通量变化与青藏高原隆升
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摘要
根据钻井资料、地震资料及露头剖面资料,对塔里木盆地西南坳陷第三纪沉积物进行了沉积通量研究,编制了不同时期沉积通量的平面等值线图;结合沉积演化特征探讨了青藏高原隆升与研究区西南缘沉积物的响应,提出了青藏高原西北缘在中新世以前隆升缓慢,之后隆升幅度增大,上新世是快速隆升期,高原的形成过程不是以整体抬升为主,而是分块体阶段性抬升的结果。
Based on drilling, seismic and outcrop data, a sedimentary flux study is conducted on Tertiary deposits in south-west depression of Tarim Basin, plane isograms of sedimentary flux at different periods are plotted. The uplift of Qinghai-Tibet plateau and the response of south-west marginal deposits in the studied area are discussed in combination with sedimentary evolution, it is proposed that Qinghai-Tibet plateau uplifts slowly at north-west margine before Miocene and then amplitude of uplift is boosted. Pliocene is the period of speeding up uplift, the process of Qinghai-Tibet plateau formation is not elevated integrately and elevated in blocks at each period.
Based on drilling, seismic and outcrop data, a sedimentary flux study is conducted on Tertiary deposits in south-west depression of Tarim Basin, plane isograms of sedimentary flux at different periods are plotted. The uplift of Qinghai-Tibet plateau and the response of south-west marginal deposits in the studied area are discussed in combination with sedimentary evolution, it is proposed that Qinghai-Tibet plateau uplifts slowly at north-west margine before Miocene and then amplitude of uplift is boosted. Pliocene is the period of speeding up uplift, the process of Qinghai-Tibet plateau formation is not elevated integrately and elevated in blocks at each period.
引文
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[14] 方小敏,李吉均.朱俊杰等.甘肃临夏盆地新生代地层绝对年代测定与划分[J].科学通报,1997,42(14) :1457～1471．
[2] 李廷栋.青藏高原隆升的过程和机制[J].地球学报:中国地质科学院院报,1995,(1) ;1～9。
[3] 金小赤,王军.陈炳蔚等.新生代西昆仑隆升的地层学和沉积学记录[J].地质学报,2001,75(4) :459～467．
[4] 王成善,刘志飞.新生代青藏高原三维古地形再造[J] .成都理工学院学报,2000,27(1) :1～7
[5] 贾承造.塔里木盆地板块构造演化和主要构造单元地质构造特征[A].童晓光.塔里木盆地油气勘探论文集[C].乌鲁木齐:新疆科技卫生出版社,1992．
[6] Sobel E R. Basin analysis of the Jurassic--lower Cretaceous southwest Tarim basin [J]. Northwest China GAS Bulletin, 1999, 111 (5) : 709～724．
[7] Hay W W, Shaw C A, Wold C N. Mass-balanced paleogeographic reconstruction [J]. Geologische Rundschaw, 1989, 78 (1) : 207～242．
[8] 王成善,丁学林.喜马拉雅的隆升及其沉积反应研究新进展[J].地质科技情报,1998,17(1) :1～7．
[9] Einsels G. Sedimentary basin: evolution, facies, and sedimentary budget [M]. Berlin Heidelberg, Springer-Verlag, 1992．
[10] Armstrong F C, Oriel S S. Tectonic development of Indoho-Wyoming thrust belt [J]. AAPG. Bulletin, 1965, 49 (10) : 1847～1866．
[11] Wiltschko D V, Dorr J A JR. Timing of deformation in overthrust belt and foreland of Indoho-Wyoming and Utah [J].AAPG. Bulletin, 1983, 67 (8) , 1304～1322．
[12] Heller P L, Bowdler S S, Chambers H P. Time of initial thrusting in the Sevier orogenic belt, Indoho-Wyoming and Utah [J]. Geology, 1986, 14 (5) :388～391．
[13] 刘志飞,王成善.青藏高原北部可可西里盆地第三纪风火山群沉积环境分析[J].沉积学报,2001,19(1) :28～36．
[14] 方小敏,李吉均.朱俊杰等.甘肃临夏盆地新生代地层绝对年代测定与划分[J].科学通报,1997,42(14) :1457～1471．
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