Late Mesozoic to Cenozoic Tectonic Events in Volcanic Arc, West Burma Block： Evidences from U-Pb Zircon Dating and Apatite Fission Track Data of Granitoids

Genetic type of basement granite from volcanic arc in the north of West Burma Block is S-type granites, which developed in volcanic arc of convergent plate margins. The results yield a group of weighted mean ^206pb/^238U ages at 102±0.81 Ma （MSWD=0.23）, which show similarity to 93.7±3.4 Ma in the no...

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Published inJournal of earth science (Wuhan, China) Vol. 24; no. 4; pp. 553 - 568
Main Author 李任远 梅廉夫 朱光辉 赵汝敏 许晓明 赵厚祥 张朋 尹宜鹏 马一行
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.08.2013
Springer Nature B.V
Subjects
Apatite
Biogeosciences
Blocking
Cenozoic
Cooling
Cretaceous
Earth and Environmental Science
Earth science
Earth Sciences
Fission
Geochemistry
Geology
Geotechnical Engineering & Applied Earth Sciences
Granite
Intrusion
Mesozoic
Miocene
Oligocene
Plate tectonics
Pliocene
Radioactive age determination
Sampling
S型花岗岩
Volcanoes
Zirconium
地块
新生代
构造活动
火山弧
磷灰石裂变径迹
缅甸
锆石U-Pb
West Burma Block
U-Pb zircon dating
volcanic arc granite
fission-track
elemental geochemistry
Late Mesozoic to Cenozoic
Online AccessGet full text
ISSN1674-487X
1867-111X
DOI10.1007/s12583-013-0349-7

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Summary:Genetic type of basement granite from volcanic arc in the north of West Burma Block is S-type granites, which developed in volcanic arc of convergent plate margins. The results yield a group of weighted mean ^206pb/^238U ages at 102±0.81 Ma （MSWD=0.23）, which show similarity to 93.7±3.4 Ma in the northern part of sampling points and 105±2 Ma in the southern part of sampling points, indicating continuous development of volcanic arc in the north of West Burma Block and subsequent granitic intrusion of late Early Cretaceous. The apatite fission track age of the samples is 22.72±3 Ma, thermal history modeling reveals that the volcanic arc in the north of West Burma Block went through two main stages in the process of uplift-cooling since Cenozoic： rapid uplifting and cooling from Late Oligocene to Early Miocene （29±1 to 20±1 Ma） and slow uplifting and cooling since Early Pliocene （4.2±1 Ma）.
Bibliography:Genetic type of basement granite from volcanic arc in the north of West Burma Block is S-type granites, which developed in volcanic arc of convergent plate margins. The results yield a group of weighted mean ^206pb/^238U ages at 102±0.81 Ma （MSWD=0.23）, which show similarity to 93.7±3.4 Ma in the northern part of sampling points and 105±2 Ma in the southern part of sampling points, indicating continuous development of volcanic arc in the north of West Burma Block and subsequent granitic intrusion of late Early Cretaceous. The apatite fission track age of the samples is 22.72±3 Ma, thermal history modeling reveals that the volcanic arc in the north of West Burma Block went through two main stages in the process of uplift-cooling since Cenozoic： rapid uplifting and cooling from Late Oligocene to Early Miocene （29±1 to 20±1 Ma） and slow uplifting and cooling since Early Pliocene （4.2±1 Ma）.
West Burma Block, volcanicarc granite, Late Mesozoic to Cenozoic, U-Pbzircon dating, fission-track, elemental geoche-mistry.
42-1788/P
Renyuan Li＊ Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China; Research Institute of China National Offshore Oil Company Ltd., Beijing 100027, China Lianfu Mei Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China Guanghui Zhu , Rumin Zhao , Xiaoming Xu , Houxiang Zhao Research Institute of China National Offshore Oil Company Ltd., Beo＇ing 100027, China Peng Zhang , Yipeng Yin, Yixing Ma Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China
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ISSN:1674-487X
1867-111X
DOI:10.1007/s12583-013-0349-7