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All Journal Bulletin of Scientific Contribution : Geology IJOG : Indonesian Journal on Geoscience Jurnal RISET Geologi dan Pertambangan Geoscience Journal Jurnal Teknologi Mineral dan Batubara Journal of Geoscience, Engineering, Environment, and Technology JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) BULLETIN OF THE MARINE GEOLOGY Buletin Sumber Daya Geologi Jurnal Geominerba Jurnal Teknologi Mineral dan Batubara

Johanes Hutabarat

Fakultas Teknik Geologi Universitas Padjadjaran, Bandung.

Author-ID : 1586027

Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Other

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PERBANDINGAN KARAKTERISTIK GEOLOGI PADA FENOMENA TUMBUKAN METEOR DI DAERAH CILETUH, JAWA BARAT DAN FENOMENA LAINNYA DI BERBAGAI BELAHAN DUNIA (LITERATURE REVIEW) Sambodo, Tri Hananto; Sukiyah, Emi; Hutabarat, Johanes; Endyana, Cipta
Bulletin of Scientific Contribution Vol 22, No 2 (2024): Bulletin of Scientific Contribution:GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc.v22i2.51283

Artikel ini memberikan pemahaman terhadap fenomena tumbukan meteor pada permukaan bumi, dari aspek geologi yang ditemukan, khususnya di daerah Geopark Ciletuh, Jawa Barat. Metode yang digunakan dalam penelitian ini adalah Systematic Literature Review (SLR), yang melibatkan analisis terhadap penelitian-penelitian sebelumnya yang telah dilakukan pada berbagai fenomena lain yang serupa di dunia. Hasil penelitian menunjukkan bahwa setiap fenomena benturan meteorit di bumi memiliki karakter geologi yang unik dan cenderung sama. Fenomena yang terjadi di daerah Ciletuh, Indonesia, salah satunya yaitu terdapat bukti unik berupa morfologi berbentuk cincin sebagai petunjuk terbentuknya kawah sederhana oleh karena dampak benturan, serta bukti lainnya ditemukannya struktur batuan yang menyerupai shatter-cone ditemukan di area kawah. Fenomena lainnya yang serupa dengan Ciletuh yaitu pada situs Yilan Crater di Cina, yaitu ditemukan bukti bentukan kawah yang menyerupai kawah sederhana dan bentukan punggungan perbukitan yang nampak unik. Penelitian lainnya juga mengungkapkan adanya anomali magnetik daerah Zagami Meteorite Impact Site di Nigeria, yang mengindikasikan kemungkinan adanya kawah tersembunyi yang menyerupai bentukan kawah sederhana hasil tumbukan yang melibatkan energi yang besar. Situs Lonar impact crater di India juga merupakan kawah dampak meteorit yang ditemukan pada permukaan basalt, beserta dengan danau kawah sentral yang menjadi daya tarik penelitian. Begitu pula pada situs lainnya seperti Barringer impact crater dan Bolaven volcanic field yang memiliki ciri dan persamaan akibat tumbukan meteor. Penelitian lebih lanjut tentunya diperlukan untuk memahami potensi adanya bukti keterjadian tumbukan meteor di Ciletuh tersebut, diantaranya melalui analisa photomicrograph maupun analisa lainnya yang mendukung. Secara keseluruhan, penelitian ini memberikan pemahaman yang lebih mendalam tentang keterjadian tumbukan meteor beserta bukti lapangan berupa bentukan lahan yang unik pada situs-situs benturan meteorit. Hasil tulisan ini dapat digunakan sebagai dasar untuk penelitian lebih lanjut dalam memahami proses pembentukan kawah, perubahan geologi dan lingkungan akibat tumbukan meteor. Kata kunci: benturan meteorit, ciletuh, geopark, geologi

PETROGRAFI BATUAN BEKU VOLKANIK BAWAH LAUT KOMPLEKS GUNUNG KOMBA, LAUT FLORES, INDONESIA -, Johanes Hutabarat; -, Agus Didit Haryanto; -, L. Sarmili
Bulletin of Scientific Contribution Vol 4, No 1 (2006): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

This study focuses on the petrography characteristics of the volcanic rocks in Mount Komba, Flores Sea, Nusa Tenggara Timur.Based on textural and mineralogical characteristics, volcanic rocks Mount Komba are composed of andesite-basaltic lava flows. It is chiefly porphyritic, intergranular, intersertal to glomeroporphyritic clots textures that contains variable proportion of plagioclase, pyroxene, biotite, hornblende and opaque oxide minerals phenocryst in very fine grained groundmass contains clinopyroxene, plagopclase laths, devitrified glass and opaque oxide minerals. Plagioclase phenocrysts show sieve-textured cores, opaque inclusions, compositional zoning, and skeletal melt pockets. Pyroxenes are strong zones with rims. Some are poikilitic. Biotite commonly exhibits a deep russet color parallel to its slow ray, the perpendicular direction being light to medium yellow brown. Some are altered to an asseblage of chlorite and finely granular opaque oxide minerals. Hornblende is perhaps slightly less abundant than biotite and occurs typically in euhedral to subhedralo crystals. It is pleochroic in shade of olive green and brownish yellow, rarely exhibiting a bright apple-green shade. Among the accessory minerals, opaque oxide minerals occurs as euhedral wedge-shape or blocky to slightly rounded, broken grains are common and also as a fine grainded alteration product associated with chlorite, formed from biotite and hornblende. Fresh glass is present, though in most cases the glass is devitrified.Some Mount Komba volcanic rocks studied exhibit varying degrees of propylitic or sericitic alteration. Feldspars plagioclase in particular, in most of the intensely hydrothermally altered Mount Komba volcanic rocks have been replaced by fine grained sericite, clay minerals, carbonate, chlorite, epidote and opaque oxide minerals.

STUDI GEOKIMIA BATUAN VULKANIK PRIMER KOMPLEKS GUNUNG SINGA - GUNUNG HULU LISUNG, BOGOR - JAWA BARAT -, Johanes Hutabarat
Bulletin of Scientific Contribution Vol 5, No 3 (2007): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

The research about study on geochemistry volcanic rocks of Gunung Singa - Gunung Hulu Lisung, Nanggung, Bogor, West Java.Samples of the Gunung Singa-Gunung Hulu Lisung were extensively analyzed for major oxides and trace elements. Compositions of geochemical samples have been plotted and are used in drawing petrogenetic inferences. volcanic rocks Gunung Singa - Gunung Hulu Lisung belong to the medium calc-alkalic to high Calc-alkalic dacite suite, and have SiO2 contents in the range of 61,34-68,55%, high Al2O3 (14,99-19,63%) and low TiO2 content and relatively high K2O (1,90-2,55%)Oxide variation diagrams for the Gunung Singa-Gunung Hulu Lisung show linear trend with much scatter. This is partially due to the fact that SiO2 makes up an increasing percentage of silicic rocks allowing less scatter in the other oxides. However, we suggest that mich of the scatter is due to mixing of variably fractionated basaltic magma with silicic magma

STUDI PETROGRAFI BATUAN BEKU GUNUNG SINGA BOGOR - JAWA BARAT -, Johanes Hutabarat; -, Mulyono
Bulletin of Scientific Contribution Vol 5, No 3 (2007): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

This research about study on petrography of igneous rocks (dacitic) of Gunung Singa, Nanggung, Bogor, West Java.Results of petrography and chemical analysis of these igneous rocks indicates that volcanics rock (lava) as dacite.Petrographic description of dacite show by porphyritic textures with plagioclase and pyroxene minerals as phenocryst. Mineralogical composition of these rocks consist of plagioclase, pyroxen, K-Felsdpar, amfibole, and opaque minerals, and secondary minerals like chlorite, clay minerals, epidote and opaque minerals.

INTERPRETASI GEOKIMIA UNSUR UTAMA DAN JEJAK KOMPLEKS VOLKANIK GUNUNG PONGKOR KABUPATEN BOGOR, JAWA BARAT -, Johanes Hutabarat
Bulletin of Scientific Contribution Vol 4, No 1 (2006): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

The research about study on geochemistry igneous rocks of Gunung Pongkor, Bogor, West Java. Basuki, et al., (1994) summarized the geology of the Pongkor areas consists of pyroclastic rocks (breccias and tuff) and lava flows and domes. Some problem to identifications which can in this research shall be as follows : How chemical composition and rocks afinity and also its evolution of exist in Mount Pongkor area have typical marking?.Samples of the Gunung Pongkor were extensively analyzed for major oxides and trace elements. Compositions of geochemical samples have been plotted and are used in drawing petrogenetic inferences. Igneous rocks Gunung Pongkor belong to the medium calc-alkalic to high Calc-alkalice suites (Peccerillo and Taylor; 1976), and have SiO2 contents in the range of 61,34-68,55%, middle and TiO2 and Al2O3 successively high (14,99-19,63%) and lower (< 0,50%); while K2O range from 1,90-2,55%. Other characteristic is the existence of some example of more enriched in Rb content and Ba. This Enrichment is also expressed by K2O content which relative higher. Than Ni element content and low Cr, and also Mg number ([Mg#]) less than 65, designate that its rock is not primitive, or equally experience of larger ones crystal fraksinasi from its mains magma.

Co-Authors Ade Ihsanudin Adi, Abizar Adjat Sudradjat Agus Didit Haryanto Agus Didit Haryanto Agus Didit Haryanto Agus Didit Haryanto Agus Didit Haryanto -, Agus Didit Haryanto Agustina Djafar Azizi, Hisyam Azhar Azwar Satrya Muhammad Cipta Endyana Dewi Gentana Dewi Gentana Dewi Gentana Dicky Muslim Emi Sukiyah Fauzan Thaha Assegaf Fery Erawan Gentana, Dewi Hendarmawan Hendarmawan Ildrem Syafri Ildrem Syafri Irwanda, Dharma Irzon, Ronaldo Iwan Setiawan Iyan Haryanto Khilal Khoiri Polanunu L. Sarmili -, L. Sarmili Lili Sarmili M. Ridfan Trisnadiansyah Mega F Rosana Mega Fatimah Rosana Mulyono - Nana Sulaksana Priatna Priatna Priatna, Priatna Purnama Sendjaja Putu Ayu Andhira Ronaldo Irzon Ryan Hidayat Sambodo, Tri Hananto Sendjaja, Purnama Stefanus Suryo Cahyono Sulaksana, Nana Teuku Yan Waliana Muda Iskandarsyah Vina Oktaviany Wilda Aini Nurlathifah Yudhi Listiawan

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