摘要
以福建省崩岗最发育的地区安溪县官桥镇—龙门镇、长汀县河田镇、永春县达埔镇—蓬壶镇和诏安县官陂镇为对象,从岩性、构造、地质发展史3个方面阐明崩岗侵蚀的地质和地貌背景。结果表明,大规模崩岗发育区的地质、地貌背景是燕山晚期大面积侵入性质均匀的岩石(花岗岩体),位于从古生代至今长期活动的区域性主干断裂带上,发育的地貌处于壮年期的晚期向老年期的发展阶段。海拔高度与崩岗地区的相对侵蚀基准面高度两个指标共同影响着崩岗的发育,相对高差在20～100m以内崩岗最发育。
Aiming to study slope collapse in Guanqiao-Longmen （Anxi）, Hetian （Changting）, Dapu-Penghu （Yongchun） and Guanpo（Zhaoan）, Fujian Province, this paper discusses geologic and geomorphologic background for slope collapse erosion based on rock characteristics, geological structure and history of geology. Results show that in the areas over which slope collapse is most widely distributed, rock is characterized by neat intruded rock （granite） in the later period of Yanshan, which is located in the regional rift zone being active from the Paleozoic Era. The developed landform is in a phase from late mature stage to old stage. Altitude and relative eroded datum plane jointly affect the development of slope collapse, and slope collapse mainly takes place in the areas where relative height is 20- 100 m.
出处
《水土保持通报》
CSCD
北大核心
2007年第2期128-131,140,共5页
Bulletin of Soil and Water Conservation
基金
国家自然科学基金"南方花岗岩地区崩岗侵蚀成因机理研究"(40671113)
关键词
崩岗
侵蚀
地质
地貌
slope collapse
erosion
geology
geomorphology
