内蒙古牙克石喇嘛山花岗岩景观特征及其对比分析

Characteristics and Origin Analysis of the Granite Landscape of the Lama Mountain in Yakeshi, Inner Mongolia

内蒙古牙克石市喇嘛山有海西期至燕山期白岗质花岗岩岩组和花岗斑岩岩组出露。受新华夏构造体系波及,塑性地层发生褶皱,刚性岩层断裂,形成区内大小28座突兀挺拔、陡峭嶙峋的花岗岩奇峰;又由于该区气候湿润,岩石风化、溶蚀较快,周围岩石脱落,导致各种类型的花岗岩峰石球化,形成大量石蛋、石柱、象形石、石槽、岩臼、石穴等微地貌。本文简要叙述了喇嘛山花岗岩景观的类型、特征,并与其他地区典型花岗岩地貌景观进行了对比分析。

Hercynian alkaline granites and Yanshanian granite-porphyry are exposed in the Lama Mountain of Yakeshi City, Inner Mongolia. The influence of the Neocathaysian tectonic system led to the folding of the plastic strata and the faulting of the rigid strata in this area, which resulted in the formation of twenty-eight varying-sized, abrupt, steeply rugged, intricately structured granite peaks and the generation of a unique granite-peak-landscape in the Da Hinggan Ling. At the same time, owing to the cold and humid climate of this area, rocks tended to fall off by such external forces as water erosion and freeze-thaw weathering, forming a large number of realistic and vivid pictographic stones, pillars, niches and rock erosion mortar landscapes. This paper has summarized the type and characteristics of the granite landscape in the geomorphologic landscape in the Lama Mountain with Lama Mountain, and compared the features of granitic those in other areas.