Topographic erosive diversities of the Xiangshan uranium ore-field,;Jiangxi province and its implications for ore-preservation: evidences;from fission track dating of apatite

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	Topographic erosive diversities of the Xiangshan uranium ore-field,;Jiangxi province and its implications for ore-preservation: evidences;from fission track dating of apatite
	Chen Zheng-Le 4; Han Feng-Bin ; Yang Nong ; Wang Ping-An ; Gong Hong-Liang ; Shao Fei ; Tang Xiang-Sheng ; Xu Jin-Shan ; Zhou Yong-Gui ; Wang Yong
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2012
卷号	55 期号:7 页码:2371-2384
关键词	Xiangshan uranium ore-field Topographic erosive diversities Ore-preservation Fission track dating of apatite
ISSN号	983YU
英文摘要	This paper mainly presents analyses results of fission track dating of apatite and Digital Elevation Modeling (DEM) of the Xiangshan landscape, to discuss the relationship of the topographic erosion after uranium mineralization with the ore-preservation. DEM synthetic image and runoff system distribution suggested that the Xiangshan ore-field was a kind of medium erosive landform, with apparently erosive diversities in south-north and east-west side of the Xiangshan main peak. The distribution of uranium deposits was highly related to sub-volcanic apparatus, with most sub-volcanic apparatus heavy eroded in southern ore-field, weakly eroded in western, and medium eroded in northern and northwestern. Apatite in volcanic rocks both from the peak of Xiangshan mountain and around the Xiangshan ore-field was chosen out and applied to fission track dating. It was yielded that rocks from southern and northern ore-field were earlier exposed at the surface than those from western areas, but later than those from the peak of Xiangshan mountain. Temperature-time modeling by the length and age of the fission track of apatite showed that the rapid exhumation of western Xiangshan areas took placed during 60 similar to 40Ma, in southern and eastern parts during 75 similar to 60 Ma, and in the peak of Xiangshan Mountain during 100 similar to 75 Ma, indicating that the peak and southern and eastern Xiangshan ore-fields had experienced much longer time erosion than western ore-fields. Our results are fairly consistent with the nowadays regional exposed characteristics of volcanic rocks, with distribution patterns of mineralization-related alternation, and with the temperature and depth of uranium mineralization, suggesting that southern and eastern parts of the Xiangshan ore-field should be relatively heavy eroded, leading to the depletion of those medium-epithermal ore-bodies probably earlier formed. Northern and northwestern parts be moderately eroded, leading alkaline-altered-related uranium ore-bodies relatively deeply formed under relative high temperature exposed at the surface. While with weak erosion in western, most uranium ore-bodies probably still preserved and acidalteration-related uranium ore-bodies under lower temperature exposed at the surface. As a result, it was proposed that western deep areas were of favorable for further ore-prospecting.
学科主题	矿床地质
WOS关键词	AFT ANALYSIS ; EXHUMATION ; MOUNTAIN ; HISTORY ; UPLIFT ; CHINA ; BASIN
WOS研究方向	Geochemistry & Geophysics
语种	中文
WOS记录号	WOS:000307155400022
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39890]
专题	中国地质科学院地质力学研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geomechinacs, Beijing 100081, Peoples R China. 2.Beijing Jianlong Investment Co, Beijing 100060, Peoples R China. 3.CNNC, Res Inst 270, Nanchang 330200, Jiangxi, Peoples R China. 4.中国地质科学院地质力学研究所
推荐引用方式 GB/T 7714	Chen Zheng-Le,Han Feng-Bin,Yang Nong,et al. Topographic erosive diversities of the Xiangshan uranium ore-field,;Jiangxi province and its implications for ore-preservation: evidences;from fission track dating of apatite[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2012,55(7):2371-2384.
APA	Chen Zheng-Le.,Han Feng-Bin.,Yang Nong.,Wang Ping-An.,Gong Hong-Liang.,...&Wang Yong.(2012).Topographic erosive diversities of the Xiangshan uranium ore-field,;Jiangxi province and its implications for ore-preservation: evidences;from fission track dating of apatite.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,55(7),2371-2384.
MLA	Chen Zheng-Le,et al."Topographic erosive diversities of the Xiangshan uranium ore-field,;Jiangxi province and its implications for ore-preservation: evidences;from fission track dating of apatite".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 55.7(2012):2371-2384.