GEOLOGI DAERAH PASAWAHAN DAN SEKITARNYA, KECAMATAN BANJARANYAR, KABUPATEN CIAMIS, PROVINSI JAWA BARAT

Abstract

The research was carried out in Pasawahan Village and its surroundings, Banjaranyar District,Ciamis Regency, West Java Province. This mapping was carried out using a surface mapping method by looking at rock outcrop data, rock distribution, geomorphology and physical rock characteristics. This concept is called the lithostratigraphic concept. In this thesis activity, the researcher obtained 5 types of rock units from old to young, namely: Jampang andesite breccia unit, Jampang Tuffan Sandstone unit, Pamutuan Napalan Tuff Member sandstone unit, Halang Sandstone Unit. The geomorphology formed in the study area is: Geomorphological Unit of Strong Wavy Topography - Denudational Hills D2, Geomorphological Unit of Topography of Denudational Medium-Sharp Mountains D3, Strong Wavy Topography D1, Weakly Wavy Topography D5, and Fluvial Plain Topography F1. The geological structures that develop in the study area are joints, anticlines, synclines and thrust faults of the Jampang Formation. The environmental geology of the study area which is the source is divided into two: positive sources: all land in the study area is used as agricultural land and livestock. A negative source formed in the study area is landslides and some hilly areas are landslide-prone areas.

Keywords: Rocks, Geomorphology, Geological Structure and Environmental Geology