Timing and tectonic setting of tin mineralization in southern Myanmar: constraints from cassiterite and wolframite U-Pb ages

doi:10.1007/s00126-021-01083-y

GIG OpenIR

	Zhang, Qiang 1; Zhao, Kui-Dong 1; Li, Wen-Qian 2; Palmer, Martin R.3; Jiang, Shao-Yong 1; Jiang, Hai 1; Zhang, Wei 1; Zhang, Di 1; Hussain, Amjad 1
	Timing and tectonic setting of tin mineralization in southern Myanmar: constraints from cassiterite and wolframite U-Pb ages
刊名	MINERALIUM DEPOSITA
ISSN号	0026-4598
	2021-11-12
页码	23
DOI	10.1007/s00126-021-01083-y
语种	英语
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
摘要	The southern Myanmar tin ore district is an important part of the well-known Southeast Asia tin belt (SATB), and hosts numerous economically important primary tin-tungsten ore deposits. However, the timing of formation of these deposits is unclear due to the scarcity of robust age data. The tectonic setting of tin mineralization in this area also needs to be further constrained. Most of the primary tin-tungsten ore deposits in southern Myanmar are typical hydrothermal quartz vein-type, with cassiterite and wolframite as the main ore minerals. Here, we present in situ U-Pb ages of cassiterite and wolframite from nine granite-related hydrothermal Sn-W deposits in southern Myanmar. Cassiterite samples from the Hermyingyi, Thitkhatoe, Thaling Taung, Kalonta, Taungphila, Pagaye, Bawapin, Kanbauk, and Letha Taung deposits yield common lead-corrected weighted mean Pb-206/U-238 ages of 61.6 +/- 0.8 Ma, 61.9 +/- 0.6 Ma, 60.4 +/- 0.9 Ma, 63.0 +/- 0.6 Ma, 62.9 +/- 0.6 Ma, 69.5 +/- 0.5 Ma, 63.6 +/- 0.6 Ma, 61.3 +/- 0.6 Ma, and 84.9 +/- 0.5 Ma, respectively. Wolframite samples collected from these deposits also yield consistent ages with the cassiterite samples. These ages, combined with available tin mineralization ages from other deposits in the western part of the SATB, define three epochs of Sn metallogeny related to three contrasting geodynamic settings: (1) Early Cretaceous (similar to 125-110 Ma) mineralization is related to post-collision slab break-off after collision between the West Burma terrane and the Sibumasu-Tengchong terrane; (2) Late Cretaceous to Paleocene (similar to 90-60 Ma) mineralization developed in an Andean-type accretionary setting during subduction of the Neo-Tethys oceanic lithosphere; (3) Early Eocene (similar to 50-40 Ma) mineralization may have formed in a post-collision setting after the India-Asia collision.
关键词	Cassiterite Wolframite U-Pb geochronology Tin deposits Southern Myanmar Southeast Asia tin belt
WOS记录号	WOS:000717407700001
收录类别	SCI
引用统计
文献类型	期刊论文
条目标识符	http://ir.gig.ac.cn/handle/344008/65614
通讯作者	Zhao, Kui-Dong
作者单位	1.China Univ Geosci, Sch Earth Resources, State Key Lab Geol Proc & Mineral Resources, Collaborat Innovat Ctr Explorat Strateg Mineral R, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 3.Univ Southampton, Natl Oceanog Ctr, Sch Ocean & Earth Sci, Southampton SO14 3ZH, Hants, England
推荐引用方式 GB/T 7714	Zhang, Qiang,Zhao, Kui-Dong,Li, Wen-Qian,et al. Timing and tectonic setting of tin mineralization in southern Myanmar: constraints from cassiterite and wolframite U-Pb ages[J]. MINERALIUM DEPOSITA,2021:23.
APA	Zhang, Qiang.,Zhao, Kui-Dong.,Li, Wen-Qian.,Palmer, Martin R..,Jiang, Shao-Yong.,...&Hussain, Amjad.(2021).Timing and tectonic setting of tin mineralization in southern Myanmar: constraints from cassiterite and wolframite U-Pb ages.MINERALIUM DEPOSITA,23.
MLA	Zhang, Qiang,et al."Timing and tectonic setting of tin mineralization in southern Myanmar: constraints from cassiterite and wolframite U-Pb ages".MINERALIUM DEPOSITA (2021):23.