Technology Application |
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A Remote Sensing Analysis of Characteristics of Neotectonic Movement in Jianghan-Dongting Basin and Huarong Uplift |
JIANG Duan-Wu, YU De-Qing, ZHANG Yuan-Ping, JIANG Feng |
General Geological Environmental Monitoring Station of Hunan Province, Changsha 410007, China |
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Abstract During the geological remote sensing investigation and monitoring of Yangtze River Valley, the authors carried
out the survey and research on geomorphology, Quaternary geology and neotectonic fracture at the 1∶250 000 scale by using
the Landsat ETM images acquired around 2000. Detailed remote sensing investigation at the 1∶50 000 scale was conducted in
an important area of Dongting Lake by using aerial photos, ALOS, SPOT and other high-resolution data. The investigation and
comprehensive analysis show that Jianghan-Dongting Basin is a rift basin formed in late Yanshanian-Cenozoic period. It was
on the whole in the subsidence state because of differential elevation causing the formation of the sub-Huarong uplift in
the interior of the basin, which extensively deposited river lacustrine facies, alluvial facies and foothill facies
Quaternary strata in mountain areas. Quaternary sedimentation within the basin is basically continuous deposition. The
upwelling areas around Jianghan-Dongting basin are characterized by intermittent uplift. Neotectonic movement mainly finds
expression in uplift, depression, tilting and fracturing. The structural subsidence and uplift of the surrounding mountains
are controlled by the fractures on the edge and in the interior of the basin.
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Issue Date: 13 November 2010
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