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Formation and evolution mode of Zhijin natural bridge and ti

2015-03-23 11:33 | Author:gzzjd | Reading:amount |

Formation and evolution mode of Zhijin natural bridge and tiankeng
The basic mechanism for the formation of natural bridge and collapsed tiankeng: under the joint control and influence of regional tectonics, strata, continuous karstification and collapse process, overlying strata of underground river is collapsed to form these natural bridges and tiankengs. Its formation and evolution process can be divided into three stages: underground river stage→formation stage of natural bridge and collapsed tiankeng→transformation and degradation stage.

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