Volcanic sediments and pebbly sandstone in the geological map included in shaly to pebbly unconsolidated sediment unit.9Apps provide lots of India android apps. Breccia unit (2,6 gr/cm3)in geological map included in Nglanggran closed fabric Basalte breccia unit or Nglanggran open fabric basaltic breccia unit. Based on data cross section intepretation of Pundong and Imogiri line, the conclusion is we can observe that the layer of limestone (2,7 gr/cm3) included in Wonosari Boundstone unit. For the specific problem the author are trying to raise about the analysize of Opak Fault based on gravity data. Natural disasters in research are soil movement, floods, and earthquakes. Natural resources found in the study area consists of land resources, water resources. Geological structures formed in the study area are joints (shear joints and tension joints), Kali Opak and Kali Oyo normal fault, Kedungjati sinistral fault, Selopamioro and Srunggo dextral faults. Stratigraphic research was divided into five rock units, with sequences from old to young are: Nglanggran basaltic closed fabric breccia units, Nglanggran basaltic open fabric units, Nglanggran tuffaceous unit, Wonosari boundstone units, and Shaly to pebbly unconsolidated sediment unit. Based on the calculation of morphometry and analysis of morphogenesis, the study area was divided into 5 (five) geomorphological units, namely geomorphology: flat fluvial geomorphological unit (F1), weak undulated denudasional geomorphological units (D5), hill-strong corrugated structural geomorphological unit (S3), weakly undulated denudasional geomorphological units (D1) and weakly karst topography geomorphological units (K1). In physiography the study area included into Southern Mountain Zone and Solo Zone.
That method does by direct observation of geological data are exposed at the surface of the earth, including: rock type, rock bedding, rock slope, the contact boundary, geological structure, and other geological phenomena.
The research method used is the geological surface mapping. Based on the Indonesian Earth Face (RBI) map, the study area located at the east of Bantul Sheet (1408 -021) and at the west of Imogiri’s Sheet (1408-022), with map scale 1: 25.000 published by Bakosurtanal. Administratively the study area is located in Selopamioro region, Imogiri district, Bantul Regency, Yogyakarta province.
0 kommentar(er)
