The Ombilin Basin is a Tertiary intermontane basin, located within the Barisan Mountain Range of West Sumatera. Despite its relatively small Tertiary basin covering approximately 1500 sq km within the Padang Highland, the Ombilin Basin contain sequence of Tertiary sediment up to 15,000 ft thick. The basin is well known for coal mining carried out since 1891 in Sawahlunto area. Based on ARI/ s…
Daerah penyelidikan terletak di Kecamatan Batu Sopang, Kabupaten Paser, Provinsi Kalimantan Timur. Secara geografis dibatasi oleh koordinat 1154500 1160000" Bujur Timur dan 014500"-020000 Lintang Selatan. Daerah ini secara geologi termasuk Cekungan Pasir dengan formasi pembawa batubara ( Coal Bearing Formation) adalah Formasi Warukin dan Formasi Tanjung. Kegia…