Remote Sensing Identification of Possible Meteorite Impact Crater on Ciletuh, West Java
Ciletuh is a geopark area in West Java that has a semicircle-shaped cliff called mega-amphitheater. Morphogenesis of the amphitheater is still unknown. One possible cause is a meteorite impact that triggered a mega slump. This study aims to collect the evidence of meteorite impact. It has significant value for the geology of Indonesia since this region not yet has confirmed impact crater. In this research, image analysis from satellite remote sensing is used for identification of meteorite impact geomorphology. An analysis based on DEM unveils a ring morphology, a possible clue of an impact crater. The depression zone surrounded by a circular shape with an uplift area in the middle resembles characteristics of the complex impact crater. Meandering Ciletuh river indicates a compression due to a slump towards the southwest. Reconstruction of possible position toward the northeast (before slump deformation occurred) shows a clearer possible meteorite impact crater. A ground checking of identified structure proves that a bowl-shaped morphology found at the possible impact crater. Some steep dip structures have found, these might be due to an impact that causes the orientation of the structure to be upright. A stone that resembles the shatter-cone is found in the mélange area. The mélange is believed as a product of a sea trench million years ago. By using meteorite impact theory, it is also possible that the mélange is a kind of impact breccia. This feature adds uniqueness to Ciletuh as a geopark.
B. Clements, R. Hall, H. R. Smyth, and M. A. Cottam, “Thrusting of a volcanic arc: a new structural model for Java,” Petroleum Geoscience, vol. 15, pp. 159–174, 2009.
I. Haryanto, “Evolusi tektonik Pulau Jawa bagian barat selama kurun waktu Kenozoikum [Tectonic Evolution of Western Java during Kenozoikum Era],” PhD Dissertation, Faculty of Geological Eng., Padjadjaran Univ., 2014.
M. F. Rosana, U. Mardiana, I. Syafri, N. Sulaksana, I. Haryanto, “Geologi kawasan Ciletuh, Sukabumi: karakteristik, keunikan, dan implikasinya [The geology of Ciletuh, Sukabumi: characteristic, uniqueness, and implication],” Research Workshop and Postgraduate Program Development, FMIPA Padjadjaran Univ., 2006.
K. S. A. Nugraha, “Tektonostratigrafi daerah Taman Jaya dan sekitarnya, Sukabumi, Jawa Barat [Tectonostratigraphy of Tamanjaya Area and Surroundings, Sukabumi West Java],” bachelor’s thesis, Faculty of Geological Eng., Padjadjaran Univ., 2016.
A. H. Satyana, “New Consideration on the Cretaceous Subduction Zone of Ciletuh – Luk Ulo – Bayat – Meratus: Implication for Southeast Sundaland Petroleum Geology,” 38th Annual Convention Proceedings, Indonesian Petroleum Association, p. G-129, 2014.
J. Hesthammer, and H. Fossen, “Evolution and geometries of gravitational collapse structures with examples from the Statfjord Field, northern North Sea,” Marine and Petroleum Geology 16, pp. 259-281, 1999.
C. O'Neill, and C. Heine, “Reconstructing the Wolfe Creek meteorite impact: deep structure of the crater and effects on target rock,” An International Geoscience Journal of the Geological Society of Australia, vol. 52, Issue 4, 2005.
S. P. Wright, L. L. Tornabene, and M. S. Ramsey, “Remote sensing of impact craters,” Impact cratering: processes and products, Blackwell Publishing Ltd, pp. 194-214, 2013.
K. Wünnemann, G. S. Collins, G. R. Osinski, “Numerical modeling of impact melt production in porous rocks,” Earth and Planetary Science Letters 269, pp. 529-538, 2008.
M. Chen, “Impact-derived features of the Xiuyan meteorite crater,” Chinese Science Bulletin, vol. 53 no. 3, pp. 392-395, 2008.
I. Spooner, G. Stevens, J. Morrow, P. Pufahl, R. Grieve, and R. Raeside, “Identification of the Bloody Creek structure, a possible impact crater in southwestern Nova Scotia, Canada,” Meteoritics & Planetary Science 44, Nr 8, pp. 1193–1202, 2009.
K. O. Pope, S. W. Kieffer, and D. E. Ames, “Empirical and theoretical comparisons of the Chicxulub and Sudbury impact structures,” Meteoritics & Planetary Science 39, Nr 1, pp. 97–116, 2004.
M. T. Wall, J. Cartwright, and R. J. Davies, “An Eocene age for the proposed Silverpit Impact Crater,” Journal of the Geological Society, vol. 165, pp. 781–794, 2008.
C. Koeberl, “Remote sensing studies of impact craters: how to be sure?” Geoscience 336, pp. 959–961, 2004.
F.F. Sabins, “Remote sensing for mineral exploration,” Ore Geology Reviews 14, pp. 157–183, 1999.
R. A. F. Grieve, and A. M. Therriault, “Observations at terrestrial impact structures: Their utility in constraining crater formation,” Meteoritics & Planetary Science 39, Nr 2, pp. 199–216, 2004.
J. G. Spray, H. R. Butler, and L. M. Thompson, “Tectonic influences on the morphometry of the Sudbury impact structure: Implications for terrestrial cratering and modeling,” Meteoritics & Planetary Science 39, Nr 2, pp. 287–301, 2004.
G. R. Osinski and L. Ferrière, “Shatter cones: (Mis) understood?” Science Advances, vol. 2, no. 8, e1600616, 2016.
- There are currently no refbacks.
Published by INSIGHT - Indonesian Society for Knowledge and Human Development