Peran Deformasi Pensesaran Mendatar Terhadap Pembentukan Beberapa Cekungan Kecil Paleogen di Sumatera Barat dan Jambi


  • Syaiful Bachri



Peleogene small basins (sub-basins) occur in West Sumatra and Jambi, either in the volcanic arc or in the southwestern margin of the Central Sumatera Basin area. According to previous reports, the small basins were developed due to regional extensional tectonics. On the basis of radar image interpretation, supported by field observation on some structural features, the small basins are interpreted to have been formed by a regional strike-slip system related to deformation of the Sumatera Fault. Smaller scaled structures may be developed within the strike-slip fault zone, either as strike-slip faults, normal faults, or combined strike-slip and normal faults, forming a braided structural pattern. Convergent movement within the braided zone may result in uplifting of some blocks, whilst the divergent movement will result in a low morphology to form relatively small basins.


Keywords: Paleogene Basin, strike-slip deformation, Sumatera Fault, convergent, divergent


Download data is not yet available.


Bachri, S., Sukanta, U, Gafoer, S., Satria Nas, D. & Panggabean, H., 2001. Stratigraphy and sedimentology of oil shale-bearing formation in the Kiliranjao Area, West Sumatera. Abstract and Extended Abstract, th 30 Annual Convention of Indonesian Association of Geologists & 10 th Geosea Regional Congress on Geology, Mineral and Energy resources, Yogyakarta, Sept. 2001.

Cameron. N.R., Clarke, M.C.G., Aldiss, D.T., Aspden, J.A. and Djunuddin, A., 1980. The geological evolution of northern Sumatera. Proc.Indon.Petrol.Assoc., Ninth Annual Convention, 149-186.

Crowell, C.J., 1974. Origin of Late Cenozoic Basins in Southern California. Dickinson, W.R., ed., Tectonics and Sedimentation: Society of Economic Paleontologists and Mineralogists Special Publication no. 22, 1974, 190-204.

Davis, P.R., 1984. Tertiary structural evolution and related hydrocarbon occurrences, North Sumatera Basin. Proc. Indon. Petrol. Assoc., Thirteenth Annual Convention, v.1, 19-49

De Coster, G.L., 1974. The geology of the Central and South Sumatera Basin. Proc. Indon. Petrol. Assoc. Eubank, R.T. & Makki, A.C.,1981. Structural geology of the Central Sumatera back-arc basins. Proc. Indon Petrol. Assoc., Tenth Annual Convention, 153-197

Heidrick , T.l.& Aulia, K.,1993. A structural and tectonic model of the Coastal Plain Block, Central Sumatera Basin. Proc. Indon. Petrol. Assoc., Twentys econd Annual Convention, 295-317

Le Pichon, X., 1968. Sea-floor spreading and continental drift. Journal of Geophysical Research, 73, 3661- 3697.

Katili, J.A., 1989. Evolution of the Southeast Asian Arc Complex. Geol. Indon. v.12, n.1, 113-143.

Pulunggono, A., 1983. Sistem sesar utama dalam pembentukan Cekungan Palembang. Doctoral thesis, ITB.

Silitonga, P.H. & Kastowo, 1995. Peta Geologi Lembar Solok, Sumatera., Skala 1: 100.000. Puslitbang Geologi, Bandung

Suwarna, N., Panggabean, H. & Heryanto, R., 2001. Oil shale study in the Kiliranjao Sub- basin, Central th Sumatrea. Abstract and Extended Abstract, 30 Annual Convention of Indonesian Association of Geologists & 10 th Geosea Regional Congress on Geology, Mineral and Energy resources, Yogyakarta, Sept. 2001.

Wain, A.S. and Jackson, B.A., 1995. New Pematang Depocentres on the Kampar Uplift, Central Sumatera. th Proc.Indon.Petrol.Assoc., 24 Annual Convention, 1995, p.215-233

Yarmanto & Aulia, K., 1989. Seismic expression of wrench tectonics in the Central Sumatera Basin. Geol. Indon., v.12, n.1, 145-175.

Yarmanto, Heidrick, T.L., Indrawardana & Strong, B.L., 1995. Tertiary tectonostratigraphic development of the Balam depocentre, Central Sumatera Basin, Indonesia. Proc.Indon.Petrol.Assoc. Twenty fourth Annual Convention, 1995.