Characteristics and genesis of the “Lingshan-style” granite landscapes, Jiangxi Province

Based on the 1:50 000 regional geological reconnaissance data in Shangrao, the characteristic and genesis of the large ring-shaped structure and geomorphologic landscape of the Lingshan granitic complex are studied through field geology survey and indoor comprehesnive study. Meanwhile, comparison study of the Lingshan geomorphologic landscape with Mt. Huangshan, Mt. Sanqingshan and Mt. Tianzhushan was undertaken. The results show that the Lingshan geomorphologic landscape with an altitude of 2 500～3 000 m is mainly distributed to the southeast of the loop-shaped structure and is composed of medium-coarse biotite alkali granite. It is tectonism, magmatic activity, weathering and erosion, combined with gravitational collapse controlling the formation of the rare large ring structure in Lingshan area. The comparative study reveals that the Mt. Huangshan and Mt. Sanqingshan represent the typical granitic cone, the Mt. Tianzhushan is characteristics of granite collapse pile landforms, and the Mt. Lingshan is characteristics of the geomorphologic landscape of large ring structure. The reason causing the hoodoo and cone of Mt. Tianzhushan and Mt. Lingshan less spectacular than that of the Mt. Huangshan and Mt. Sanqingshan as follows:(1)the altitude of the Mt. Tianzhushan and Mt. Lingshan is 400 m lower than that of the Mt. Huangshan and Mt. Sanqingshan;(2)the erosion is weaker in the Mt. Tianzhushan and Mt. Lingshan area than that of the Mt. Huangshan and Mt. Sanqingshan area. Our investigations not only provide new information for study on granitic landscape, but also offer new data for the geopark protection and development.