Thảo luận:Đới đứt gãy Sông Hồng
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Bồn trũng Sông Hồng[sửa mã nguồn]
"The Yinggehai Basin is filled with 10–17-km-thick clastic deposits [45]. Basin sedimentation began in the late Eocene [45, 88]. During the Oligocene (> 21 Ma), clockwise rotation of the Indochina Block induced sinistral slip along the RRFZ and the basin rapidly subsided and started to fill. The depocenter was situated in the southern part of the basin during this syn-rift stage (Figure 11) [45, 91]. During the quiescent post-rift stage of the RRFZ, the rate of basin subsidence accordingly decreased and the depocenter gradually migrated northwestward [45]. The reactivation of the RRFZ with dextral movement triggered rapid subsidence [80] and enhanced the input of sediment [45]. The depocenter migrated from the center to the southeastern end of the basin (Figure 11).
The infill of the Yinggehai Basin varies from alluvial, fluvial, and lacustrine deposits (before 21 Ma, the syn-rift stage) to marine sediments (after 21 Ma, the post-rift stage) [80]. Almost all the sediments in the basin are considered to have been derived from the Himalayas through the Red River drainage network [92]. Large mountain belts with high rates of sediment yield and along-fault transport networks were able to effectively supply huge volumes of detritus into the basin. Thick sediments and high sedimentation rates resulted in an over-pressured condition leading to mud diapirism [73], and also to depressed surface heat flow (∼80 mW m-2) [93]. The orientations of mud diapirs in the basin (Figure 13) indicate E–W extension related to right-lateral motion of the northeastern bounding fault [89, 90]."[1] --Tranletuhan (thảo luận) 05:12, ngày 26 tháng 6 năm 2014 (UTC)
tài liệu[sửa mã nguồn]
- http://geologie.ens-lyon.fr/HERVE/recherche/publications/NatureRRF.pdf
- doi:10.1016/j.earscirev.2012.06.008 Phan Trong Trinh et al. / Earth-Science Reviews 114 (2012) 224–235
- doi:10.1007/s11430-006-0839-x
Bố cục[sửa mã nguồn]
Bố cục và nội dung bài viết chưa được logic, chỉ đang ở mức tập hợp thông tin.--Tranletuhan (thảo luận) 11:34, ngày 26 tháng 6 năm 2014 (UTC)