Geochemistry and Zircon U-Pb Geochronology of Early Paleozoic S-type Granites in the Eastern Qilian Block, Northwest China

被引：3
作者：
Liu, Xiuting [1 ,2 ,3 ]
Li, Binkai [1 ,2 ,3 ]
Han, Jilong [4 ]
Ren, Erfeng [5 ]
Gao, Donglin [1 ,2 ]
Du, Yongsheng [1 ,2 ]
Ren, Qianhui [6 ]
Zhang, Yan [7 ]
机构：
[1] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Peoples R China
[2] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Geol & Environm Qinghai Prov, Xining 810008, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] Univ Sci & Technol, Coll Chem & Pharmaceut Engn Hebei, Shijiazhuang 050018, Hebei, Peoples R China
[5] Qinghai Univ, Dept Geol Engn, Xining 810016, Peoples R China
[6] Qinghai Univ, Dept Water Conservancy & Elect Power, Xining 810016, Peoples R China
[7] Qinghai Prov Nonferrous Met Third Geol Explorat I, Xining 810012, Peoples R China
来源：
ACTA GEOLOGICA SINICA-ENGLISH EDITION | 2021年 / 95卷 / 02期
关键词：
geochemistry; geochronology; petrogenesis; syn-collision; Qilian Block; NW China; NORTHERN TIBETAN PLATEAU; UHP METAMORPHIC BELT; NW CHINA; WESTERN CHINA; CONTINENTAL-CRUST; OCEANIC SUBDUCTION; GARNET PERIDOTITE; ADAKITIC ROCKS; ARC MAGMATISM; DULAN AREA;
D O I：
10.1111/1755-6724.14504
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The Qilian Block (QB) is a Precambrian micro-continent located in the northeastern Qinghai-Tibet Plateau. Prevalent Lower Paleozoic granitic magmatic rocks crop out in the QB. A new integrated study of zircon U-Pb ages and systematic whole-rock geochemical data for the Xindian, Dongjiazhuang and Xiaogaoling granites in the eastern segment of the QB constrains their emplacement ages, petrogenesis, and regional evolutionary history. U-Pb dating reveals that the Xindian granite was emplaced 454 Ma, and both the Dongjiazhuang and Xiaogaoling granites were emplaced ca. 440 Ma. Geochemical study shows that all granites belong to the high-K calc-alkaline to shoshonitic series and are S-type granites formed by partial melting of continental crust, mainly metagraywacke. We infer that these ca. 454-445 Ma granites formed in a syn-collisional setting during the continental collisional between the Qaidam and Qilian blocks.
引用
收藏
页码：439 / 458
页数：20
相关论文
共 116 条
  • [1] High-potassium, calc-alkaline I-type plutonism in the European Variscides: northern Vosges (France) and northern Schwarzwald (Germany)
    Altherr, R
    Holl, A
    Hegner, E
    Langer, C
    Kreuzer, H
    [J]. LITHOS, 2000, 50 (1-3) : 51 - 73
  • [2] [Anonymous], 2007, SCI CHINA SER D
  • [3] [Anonymous], 2008, THESIS U SCI TECTNOL
  • [4] [Anonymous], 1991, REG GEOL SICHUAN PRO
  • [5] [Anonymous], 1996, PETROGENESIS MARINE
  • [6] BGMRG, 1989, WORLD REGIONAL STUDI, V1, P1
  • [7] Age, geochemistry and tectonic setting of Buqingshan ophiolites, North Qinghai-Tibet Plateau, China
    Bian, QT
    Li, DH
    Pospelov, I
    Yin, LM
    Li, HS
    Zhao, DS
    Chang, CF
    Luo, XQ
    Gao, SL
    Astrakhantsev, O
    Chamov, N
    [J]. JOURNAL OF ASIAN EARTH SCIENCES, 2004, 23 (04) : 577 - 596
  • [8] Chappell B.W., 1974, PAC GEOL, V8, P173, DOI DOI 10.1046/J.1440-0952.2001.00882.X
  • [9] Two contrasting granite types: 25 years later
    Chappell, BW
    White, AJR
    [J]. AUSTRALIAN JOURNAL OF EARTH SCIENCES, 2001, 48 (04) : 489 - 499
  • [10] I-TYPE AND S-TYPE GRANITES IN THE LACHLAN FOLD BELT
    CHAPPELL, BW
    WHITE, AJR
    [J]. TRANSACTIONS OF THE ROYAL SOCIETY OF EDINBURGH-EARTH SCIENCES, 1992, 83 : 1 - 26
12345678910