Mesozoic-cenozoic clastic composition in Kuqa depression, northwest China: Implication for provenance types and tectonic attributes\.

	Mesozoic-cenozoic clastic composition in Kuqa depression, northwest China: Implication for provenance types and tectonic attributes\.
	Li, Z ; Wang, DX ; Lin, W ; Wang, QC
刊名	ACTA PETROLOGICA SINICA
	2004-05-01
卷号	20 期号:3 页码:655-666
关键词	Tianshan Kuqa Depression Basin-range System Detrital Composition Provenance Mesozoic-cenozoic
ISSN号	1000-0569
文献子类	Article
英文摘要	It is an important method to understand basin-range evolution through studying depositional provenances. Similar evolutionary sequences of detrital maturity are found to exist in conglomerate clasts, sandstone framework grains and detrital heavy minerals, respectively, from different profiles in the Kuqa depression along the south of the Tianshan, northwest China. The similarity of those time-series profiles mainly resulted from tectonic activities and orogenesis of the provenance area, (ancestral) Tianshan. An integrated research on elastic deposition in the Kuqa depression shows that the Tianshan provenances are characterized by the recycled orogen type, whose evolutionary sequences may be divided into the following five phases: (1) succeeding to tectonic extrusion and uplift regime since Middle Carboniferous, the ancestral Tianshan supplied provenances mainly consisting of sedimentary and middle-high grade metamorphic rocks and characterized by the collision orogen and mixed orogenic sandstones types; (2) from Middle Triassic to Middle Jurassic, with weak tectonic activity, provenances mainly consisting of metamorphic and acidic volcanic rocks attributed to are orogen and mixed orogenic sandstones types were developed, finally resulting in stable detrital heavy mineral assemblages, constituted by zircon, rutile and tourmalin, in depositional records; (3) a new round of extrusion-uplift of the Tianshan began in Late Jurassic and Early Cretaceous, which resulted in complex provenance types; (4) tectonic extrusion and uplift of the south Tianshan were intensified during Paleocene-Miocene ( especially Miocene), with an increasing contents of unstable detrital heavy minerals consisting of hornblende and pyroxene, which resulted in provenances differentiation along the south of the Tianshan, that is, more sedimentary rocks mainly attributed to the collision orogen and fold-thrust belt types occurred in west and more crystalline rocks attributed to the mixed orogen type in east; and (5) more sedimentary provenances influenced the Pliocene elastic deposits, with similar tectonic attributes to those of the phase four, under intensive uplift and southward (basinward) accretion of the south Tianshan. It is also presented that the conglomerates and unstable detrital assemblages developed in the above fourth and fifth phases may be influenced by acute climate oscillation as well as intensive uplift of the Tianshan.
WOS关键词	ACTUALISTIC SANDSTONE PETROFACIES ; TIEN-SHAN ; TIAN-SHAN ; TARIM BASIN ; CENTRAL-ASIA ; SEDIMENTARY RECORD ; SOUTHERN JUNGGAR ; NORTHERN TARIM ; TURPAN BASINS ; UPLIFT
WOS研究方向	Geology
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000222897200029
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/64535]
专题	中国科学院地质与地球物理研究所
通讯作者	Li, Z
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Hefei Univ Ind, Hefei 230009, Peoples R China
推荐引用方式 GB/T 7714	Li, Z,Wang, DX,Lin, W,et al. Mesozoic-cenozoic clastic composition in Kuqa depression, northwest China: Implication for provenance types and tectonic attributes\.[J]. ACTA PETROLOGICA SINICA,2004,20(3):655-666.
APA	Li, Z,Wang, DX,Lin, W,&Wang, QC.(2004).Mesozoic-cenozoic clastic composition in Kuqa depression, northwest China: Implication for provenance types and tectonic attributes\..ACTA PETROLOGICA SINICA,20(3),655-666.
MLA	Li, Z,et al."Mesozoic-cenozoic clastic composition in Kuqa depression, northwest China: Implication for provenance types and tectonic attributes\.".ACTA PETROLOGICA SINICA 20.3(2004):655-666.