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6-Distribution feature of Zhijin karst

2015-03-25 20:54 | Author:gzzjd | Reading:amount |


From high elevation to low elevation, Zhijin karst varies with the following rules:
A- The area of depression and relative height difference of landforms increas gradually.
B- Landform:changes from fengcong-depressions in small scale → widely distributed fengcong-depressions and karst hills →fengcong-gorges with the cut depth ranging from decades of meters to hundreds of meters.It can be seen that peaks with different heights present themselves in stair-step layer by layer, forming an obvious “layered” mountain landscape.
C- The buried depth of underground water becomes shallow gradually.
D- Cave group, tiankeng group, natural bridge group and gorge generally present themselves successively.
It is the result of erosion and destruction to ancient denudation surface, and is one of direct evidences for interval elevation of Guizhou Plateau crust since paleogene as well as a micro record of development and evolution of Guizhou Plateau karst landform under different geomorphic and geographical environments since late Triassic epoch. It records rich evolution information of regional and global environments, providing good information carrier for restoring environmental evolution research of Guizhou Plateau.
Zhijin Karst is the result of erosion and destruction to ancient denudation surface,and is one of direct evidences for intermittent uplift of Guizhou Plateau since Paleogene as well as a micro record of development and evolution of Guizhou Plateau karst landform under different geomorphic and geographical environments since late Triassic epoch. It records rich evolution information of regional and global environments, providing good information carrier for restoring environmental evolution of Guizhou Plateau.


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