三江地区北段江达弧间盆地的沉积演化

李金高; 周祖翼; 彭勇民; 姚鹏

三江地区北段江达弧间盆地的沉积演化

1 同济大学上海 200092;
2 西藏自治区地质矿产勘查开发局拉萨 850000;
3 成都地质矿产研究所成都 610082

基金项目: 国家科技攻关项目(97-924-01-01-03)与国土资源部“九五”攻关项目(95-02-001-01)联合资助

详细信息

作者简介:
李金高男 1962年出生博士沉积学

中图分类号: P539.2

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Development of Jomda Interarc Basin in the North of Eastern Tibet

1 Tongji University,Shanghai 200092;
2 Tibet Bureau of Geology and Mineral Resources,Lhasa 850000;
3 Chengdu Institute of Geology and Mineral Resources,Chengdu 610082

摘要

摘要: 江达弧间盆地位于西藏东部的三江地区北段,现今被厚约 10 0 0 0m的三叠系所覆盖,三叠纪该区以海相沉积为主,并以巨厚浊积岩与频繁火山活动形成的钙碱性系列弧火山岩为特征。本文进行的盆地分析基于两个方面:一是运用层序地层学,通过精细沉积相与沉积相模式研究,在露头剖面上共识别出 10个三级层序界面和 10个三级层序,建立了三叠纪层序地层年代格架;二是沉降史分析,重建的构造沉降曲线上反映出两次抬升 (分别在 2 5 0Ma和2 35Ma)与二次明显的沉降,估算的沉积速率介于 87～ 5 37m/Ma。研究表明江达盆地演化可划分为 6个沉积充填序列,经过了早先的拉张加深和晚期挤压的充填变浅过程.
- 弧间盆地 /
- 弧火山岩 /
- 层序地层 /
- 沉降曲线 /
- 三江地区
Abstract: Jomda interare basin is located in the north part of Three-River area,eastern Tihet, and today covered by Triassic with about 10 000 m in thickness.Marine sediments predominated, and were characterized by the largely thick turhiditv rocks and arc volcanic rocks of cal。-alkalic suites that resulted from frequent volcanic events.The basin analvscs were on the bases of two sides:(1)utility of sequence stratigraphy, based on outcrop profiles, 10 three-order boundaries and sequcnccs were recognized by research of fine sediment facics and its models.Isochronous grillwork for Triassic sequence stratigraphy were established.The recognized marks of boundaries were built by the distinguished kcv sequence boundaries and geometric or superposed patterns of system traces and compared isochron of sedimentary and volcanic events.10 sequcncc stratigraphic boundaries were discriminated with marks of tectonic and strata including 6 Ⅰ-type and 4 Ⅱ-type boundaries.10 sequences were divided,.including 6 Ⅰ-type and 4 Ⅱ-type.These sequences developed during 37 Ma, the estimated average time of a sequence is 3-7Ma, with generally 1-2 Ma, the longest about lOMa. (2) Analvses of subsidence, the rebuilt of tectonic subsidence curves suggested that there were clearly two uplifts(at 250 Ma and 235 Ma) and two sinks.The estimated sedimentary rates were among 87-537 m/Ma. It is inferred that relations among tectonic suhsidence, water depth and high-frequency sedimentary velocities represented characteristics of depositional process in the arc area.It is concluded that evolution of Jomda basin were classificated into 6 depositional accumulation stages.The 6 stages were respectably: ①sedimentation of first shallow shelfs② formation of carbonate platforms ③development of the volcanic-terrigeous auhmarine fans④advancement of the volcanic-terrigeous shelfs③evolution of carbonate ramp and ⑥advancement of the terrigeous shelf to delta. It is pointed out that interarc basin of Jomda experienced processes of both early extensive deepness and late compressed shallowness.
- interarc hasin /
- arc volcanic rock /
- scqucncc stratigraphy /
- suhsidcnce cnrve /
- eastern Tibet

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参考文献(1)

[1]

1 黄汲清、陈炳蔚.中国及邻区特提斯海的演化[M].北京:地质出版社，1987

2 潘桂棠、陈智梁.东特提斯地质构造形成演化[M].北京:地质出版社，1997

3 岁建宁，张止贵.二江特提斯沉积地质与成矿[M].北京:地质出版社. 1992

4 莫宣学.二江特提斯火山作用与成矿[M].北京:地质出版社，1993

5 杜德勋，岁建宁.昌都地块沉积演化与古地理[J].岩相古地理.1997.17(4):1一17

6 Pan. Guitang. Cenozoic deformation and stress patterns in Eastern Tibet and western Sichun[J].Geolvrissens Chaften. 1996. 14(7一8): 76一89

7 Li Xingzhell et al.Geology and tectonics of llengduan Mountains[R].30th IGC field trip guide T116. Geo. pub. llouse. Beijing. 1996

8 Hsu A K J, et al.Tectonic evolution of the Tibetan Plateau: A working hypothesis based on the Archipelago model of orogenesis[J]. lnternation al Geo.Bev.，1995 37:473一508

9 彭勇民，潘桂棠，岁建宁.二江北段生达残留弧后盆地晚三叠世层序地层与演化[J}.地球学报.1999.20(3):318一324

10 彭勇民，潘桂棠，岁建宁.西藏东部二叠纪火III岩形成和演化[J].地质论评.1999.45(增刊):987一994

11 岁建宁，彭勇民.东特提斯板块会聚边缘与岛弧造山作用[A].见: 国家计委国上司、地矿部科技司编.地质科学研究论义集[C].30届国际地质人会交流.北京:中国经济出版社，1996

12 彭勇民.三江地区高吉碱性岩体的岩石化学特征[J].四川地质学报.1997. 17( 1):17一22

13 荒户.弧后沉积盆地的层序地层学分析一以新泻县蒲原区域为例[J].沈耀龙译.海洋地质译丛.1994.(6)总80: 17一26

14 Kolla V&Macuirda D B J. Sea level changes and timing of turbidity current events in dleep-sea fall ytems [A].1n: Wilgus. C. K.，et al. Sea-level changes:an integrated approach [C]. SEPM. Spec. Pub.，1988. 42: 381-392

15 Einsele G.et al.西藏口喀则自坐纪弧前盆地:沉积物和盆地演化[J].岩相古地理.1993,13(1):30一31

16 Eiusele G.SedimeutaTV basins: evolution, facies and sediment budget[M].Spring，Berlin, lleideberg, New York, 1992.628一654

17 Ito M. lligh-frequency deposition al sequence of the Cpper part of the Kazusa Croup,a middle Pleistocene forearc basin fill in Boso Peninsula[J]. Japan,Sedi. Geol. 1992, 76: 155一175

18 Louth T S, et al, Condensed section: the key to age determination aTTd correlation of continental margin sequences[J].In: Sea-Level changes一an,integrated approach[C]. SEPM, 1988, 42: 183一213

19 饶荣标，徐济凡，陈永明.青藏高原的三叠系[M].北京:地质出版社,1987,1-239

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