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Accurate dating of Bayingou ophiolite in northern Tianshan mountains and its tectonic significance(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2005年第02期
Page:
17-20
Research Field:
Publishing date:

Info

Title:
Accurate dating of Bayingou ophiolite in northern Tianshan mountains and its tectonic significance
Author(s):
XU Xue-yi; MA Zhong-ping; XIA Lin-qi; LI Xiang-min; XIA Zu-chun; WANG Li-she
Xi’ an Institute of Geology and Mineral Resources,Xi’ an 710054,China
Keywords:
Bayingou ophiolite fragment; shaping age; plagiocgranite; SHRIMP; early Carboniferous Epoch; Uygur Autono- mous Region of Xinjiang
PACS:
P588.1
DOI:
-
Abstract:
Sensitive High Resolution Ion Microprobe(SHRIMP)zircon U-Pb dating of plagiogranite from Bayingou ophiolite fragment in northern Tianshan indicates the magmatic age of the plagiogranite to be(324.8± 7.1)Ma(2σ), which records the age of the fomation of Baiyingou ophiolite fragment and shows that the Bayingou ophiolite formed in the late stage of Ear- ly Carboniferous. The Bayingou ophiolite formes in tectonic setting of continental rift and supplies an evidence for the exist- ence of Late Paleozoic“ Red Sea type” ocean basin in northern Tianshan Mountains.

References:

[1] 邬继易 , 刘成德. 北天山巴音沟蛇绿岩的地质特征[J] . 岩石 学报 , 1989 , 5(5):76 ～ 87.
[2] 高长林 , 崔可锐 , 钱一雄 , 等. 天山 微板块构造与塔 北盆地 [M] . 北京 :地质出版社 , 1995.
[3] 肖序常 , 汤耀庆 , 冯益民 , 等. 新疆 北部及其邻区大 地构造 [M] . 北京 :地质出版社 , 1992.
[4] 王作勋 , 邬继易 , 吕喜朝 , 等. 天山多旋回构造与成矿[M] . 北京 :科学出版社 , 1990.
[5] 卢华复 , 贾承造 , 贾 东 , 等. 库车 再生前陆盆地冲断构造楔特 征[J] . 高校地质学报 , 2001 , 7(3):257 ～ 271.
[6] 高俊 , 何国琦 , 李茂松 , 等. 西天山 造山带的古生带 造山过 程[J] . 地 球科 学 ———中国 地 质大 学学 报 , 1997 , 22(20): 682 ～ 688.
[7] C om pst on W , Wi lliams I S , Ki rsch vink J L, et al. Zi rcon UPb ages of early Cambrian T ime-scale[J] . J Geol S oc, 1992 , 149 :171～ 184.
[8] 夏林圻 , 夏祖春 , 徐学义 , 等. 天山 造山带古生代洋 陆转换 的几点思考[J] . 西北地质, 2002 , 35(4):9 ～ 20.
[9] Xi a L Q, Xu X Y , Xi a Z C , et al. C arb oni ferous pos t - collisional rif t vol cani sm of the Ti an shan Moun tains , Northwestern China[J] . Act a Geologica Sini ca(Englis t edit ion), 2003 , 77(3):338 ～ 360.
[10] Xi a L Q, Xu X Y , Xia Z C , et al. Pet rogenesi s of Carboniferou s rif t volcanic rocks in the Ti ans han Mount ain s , northw es tern China[J] . Geological S ociety of Ameri ca Bull et in , 2004 , 116 :419 ～ 433.
[11] 姜常义 , 穆艳梅 , 赵晓宁 , 等. 南天山褶皱 带北缘基性-超基性 杂岩带的地质学特征与大地 构造意义[J] . 西安 工程学 院学 报 , 2002 , 22(2):1 ～ 6.

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Last Update: 1900-01-01