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Abdurrokhim -, Abdurrokhim
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Environmental Science

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A FEW OF TURBIDITE CHARACTERISTIC FEATURE IN THE VICINITY OF BANTARUJEG -, Abdurrokhim
Bulletin of Scientific Contribution Vol 5, No 1 (2007): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1582.753 KB) | DOI: 10.24198/bsc.v5i1.8135

Abstract

The traversing of Cilutung River exposes the sedimentary rock which is corresponding to turbidity system sedimentation. In around Bantarujeg area, the composite lithology is characterized by monotonous of poorly sorted tuffaceous sandstone interbedded with mudstone of classical turbidite; coarse grain of pebbly sandstone; interbedded tuffaceous sandstone and mudstone of slump deposits; disorganized pebble-coble-sized components of mud supported; massive sandstone and polymix breccia. A genetic unit based on sedimentary processes is more reliable in order to grouping the lithostratigraphic units.
LIMESTONE BEDS DEVELOPMENT OF THE MIDDLE–LATE MIOCENE JATILUHUR FORMATION IN THE BOGOR TROUGH, WEST JAVA -, Abdurrokhim; -, Hendarmawan
Bulletin of Scientific Contribution Vol 13, No 2 (2015): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1734.662 KB) | DOI: 10.24198/bsc.v13i2.8395

Abstract

The sedimentary rock succession of the Jatiluhur Formation comprises of mixed siliciclastic and carbonate sedimentary rocks. Two intervals of limestone beds are observed along the Cipamingkis River, on the lower and upper part of succession. Limestone in the lower part is typified by coarse-grained slump-scar-fill deposits that deposited during middle Miocene. It is largely consisting of skeletal fragments that have been delivered from the shallow marine carbonate reef of the Upper Cibulakan Formation during relative sea level fall. The punctuated mixing of siliciclastic and carbonate detritus took place during the middle Miocene in the Bogor Trough. Limestone beds in the upper part are characterized by thick- to very thick bedded limestone intercalated with thin- to very thin laminated siltstone, claystone, and fine-grained sandstone, which are interpreted to have been deposited in the shelf margin environment during late Miocene. The limestone consists of various characteristic of packstone, grainstone, rudstone and boundstone. Carbonate reef of the Klapanunggal Formation is interpreted to be the source of thick-bedded limestone in the upper part. The facies mixing of siliciclastic and carbonate sediments occurred in the middle part of Jatiluhur Formation during the late Miocene.
TEMPORAL VARIATION IN PETROGRAPHIC FEATURES OF THE MIOCENE JATILUHUR FORMATION IN THE BOGOR TROUGH, WEST JAVA -, Abdurrokhim; -, Hendarmawan
Bulletin of Scientific Contribution Vol 12, No 2 (2014): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc.v12i2.8371

Abstract

This paper reports on petrographic features Jatiluhur Formation in the northern part of Bogor Trough. On basis of mineral composition from petrographic analysis of sandstone samples, the petrographic features of the Jatiluhur Formation can be classified into 4 petrographic facies as follow: (F1) Feldspathic arenite, (F2) Feldspathic greywacke, (F3) Limestone, and (F4) Mixed siliciclastic and carbonate. The sediments of the Jatiluhur Formation indicate that they were derived mainly from a continental source, including the Sundaland in the north, which is considered to have been the most possible source area for the Paleogene sediments. The increase in relative abundance of volcanic fragments was documented in the late Miocene samples and this suggests that the late Miocene deposits of the Jatiluhur Formation seem to have also received some sediment directly or indirectly from the contemporaneous volcanic provenances to the south.
Co-Authors Hendarmawan -