Paper Number: 755
Uplift-denudation of peripheral orogenic belts control on the formation of sandstone type uranium (U) deposits in Junggar Basin, Northwest China: Implication from apatite fission track research
Song, J.Y.1, Qin, M.K.1 and Cai, Y.Q.1
1 Beijing Research Institute of Uranium Geology, No.10, Xiaoguandongli, Chaoyang district, Beijing 100029, China, jessica_0@163.com
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Junggar Basin, located in the western Central Asian Orogenic Belt (Figure 1), is famous by oil-bearing and sandstone type U deposits in China.
The coupling development and evolution of Junggar Basin and its peripheral orogenic belts play an essential role in controlling the distribution and transformation of sedimentary facies which control the U mineralization, preservation and renovation (Han X.Z. et al.) [1], and dive us to concern the genetic relationship between the uplift-denudation of peripheral orogenic belt and sandstone type U mineralization in Junngar Basin through apatite fission track research.
Figure 1: The tectonic framework of Junggar Basin
The apatite fission track research indicates there are six regional tectonism occurred in Junggar Basin since Permian, and each tectonism influenced the original basin morphologies and metallogenic environment of sandstone type U deposits differently. The tectonism not only made the U-rich basement being uplifted which resulted erosion and migration of U source into the basin, but also led to the formation of the front slope belt which is conductive to a later water supply and drainage system. The genetic relationship between uplift-denudation of peripheral orogenic belt and sandstone type U mineralization in Junggar Basin is showing in Table 1 in detail.
Table 1: This table is showing the genetic relationship between tectonic uplift of peripheral orogenic belt and sandstone type U mineralization since Permian, Junggar basin
References:
[1] Han X.Z. et al. (2008) Acta Petrologica Sinica 24(10): 2447-2455