广东红层岩溶地貌与丹霞地貌

RED BED KARST LANDFORM AND THE DANXIA LANDFORM IN GUANGDONG PROVINCE

通过对构成广东丹霞地貌之红层的研究,对红层岩溶这一概念进行了较深入的探讨,对其是否属于假岩溶提出质疑,并分析了丹霞地貌和红层岩溶地貌的关系。

In Guangdong Province, the chemical composition of the red beds by the basin margin bordering to limestone hills usually come up to that of limestone. The called lime gravelstone and calcrete, should be changed into gravelly limestone and be included in carbonate rock. The red bed karst contains both types of karst in carbonate and clastic rocks. The types of the red bed karst landform are similar to those of limestone and a little different from the Danxia landform which is a landform of cliff group that formed of purple-red, horizontal or gently dipping calcareous sedimentary rocks. Karst landforms are very strongly developed in all of the gravelly carbonate rock in red beds, in which the Danxia landform is hard to form.Based on calcite content, the development of the red bed karst in the clastic rocks of the red bed can be moderately, poorly or hardly, and the formation of the Danxia landform is possible.