Discovery of the Late Cretaceous detrital zircon in Renbu tectonic melange, South Tibet, and its tectonic significance

被引：0
作者：
Li GuangWei [1 ]
Liu XiaoHan [2 ]
Wei Lijie [2 ]
Liu XiaoBing [2 ]
机构：
[1] Chinese Acad Geol Sci, Inst Geol, State Key Lab Continental Tecton & Dynam, Beijing 100037, Peoples R China
[2] Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100085, Peoples R China
来源：
ACTA PETROLOGICA SINICA | 2011年 / 27卷 / 11期
关键词：
Renbu melange belt; Yarlung-Zangbo suture zone; Detrital zircon; U-Pb geochronology; Hf isotope; FORE-ARC BASIN; THRUST BELT; U-PB; EVOLUTION; GEOCHRONOLOGY; CONSTRAINTS; STRATA; PROVENANCE;
D O I：
暂无
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The existence and distribution of the peripheral foreland basins in the Yarlung-Tsangpo suture zone and Gandese zone remains controversial. Here we report the in-situ detrital zircon U-Pb and Hf isotopic analysis of sedimentary rock from a sedimentary relict, paraconformably covering the Triassic ophiolite relicts in the Renbu melange belt, Dejilin Town, Renbu County. Nine detrital zircon grains out of 54 grains have ages from 83 to 121Ma and three grains have ages of 197 +/- 3Ma, 203 +/- 5Ma and 208 +/- 5Ma. The majority of these young zircons are characterized by high Hf-176/Hf-177 isotopic ratios and positive epsilon(Hf) values that are similar to magmatic zircons from the Gangdese batholith, indicating the latter has been a predominant source provenance of the sedimentary relict. It may be a part of the foreland basin systems in the Gandese-Himalayan collisional orogen belt, which plays a significant indicator of the initial collision between India and Eurasian plates.
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页码：3328 / 3334
页数：7
相关论文
共 41 条
  • [1] The Lu-Hf isotope geochemistry of chondrites and the evolution of the mantle-crust system
    BlichertToft, J
    Albarede, F
    [J]. EARTH AND PLANETARY SCIENCE LETTERS, 1997, 148 (1-2) : 243 - 258
  • [2] Cai FL, 2009, THESIS CHINESE ACAD
  • [3] Provenance analysis of upper Cretaceous strata in the Tethys Himalaya, southern Tibet: Implications for timing of India-Asia collision
    Cai, Fulong
    Ding, Lin
    Yue, Yahui
    [J]. EARTH AND PLANETARY SCIENCE LETTERS, 2011, 305 (1-2) : 195 - 206
  • [4] Zircon U-Pb and Hf isotope constraints on the Mesozoic tectonics and crustal evolution of southern Tibet
    Chu, Mei-Fei
    Chung, Sun-Lin
    Song, Biao
    Liu, Dunyi
    O'Reilly, Suzanne Y.
    Pearson, Norman J.
    Ji, Jianqing
    Wen, Da-Jen
    [J]. GEOLOGY, 2006, 34 (09) : 745 - 748
  • [5] Detrital geochronology and geochemistry of Cretaceous-Early Miocene strata of Nepal: implications for timing and diachroneity of initial Himalayan orogenesis
    DeCelles, PG
    Gehrels, GE
    Najman, Y
    Martin, AJ
    Carter, A
    Garzanti, E
    [J]. EARTH AND PLANETARY SCIENCE LETTERS, 2004, 227 (3-4) : 313 - 330
  • [6] Stratigraphy, structure, and tectonic evolution of the Himalayan fold-thrust belt in western Nepal
    DeCelles, PG
    Robinson, DM
    Quade, J
    Ojha, TP
    Garzione, CN
    Copeland, P
    Upreti, BN
    [J]. TECTONICS, 2001, 20 (04) : 487 - 509
  • [7] Foreland basin systems
    DeCelles, PG
    Giles, KA
    [J]. BASIN RESEARCH, 1996, 8 (02) : 105 - 123
  • [8] Dickinson WR, 1974, SPEC PUBL SEPM, V101, P1552
  • [9] Paleocene-Eocene record of ophiolite obduction and initial India-Asia collision, south central Tibet
    Ding, L
    Kapp, P
    Wan, XQ
    [J]. TECTONICS, 2005, 24 (03) : 1 - 18
  • [10] Ding L., 2003, SCI CHINA SER D, V46, P84
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