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All Journal Buletin Sumber Daya Geologi Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources)
Agus Didit Haryanto
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Chemistry Earth & Planetary Sciences Education Energy Engineering Environmental Science

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KARAKTERISTIK ZONASI BATUAN RESERVOAR BERDASARKAN PETROGRAFI, SERBUK BOR, UJI TEKANAN DAN TEMPERATUR DI LAPANGAN PANAS BUMI SOKORIA, KABUPATEN ENDE, PROVINSI NUSA TENGGARA TIMUR: RESERVOIR CHARACTERISTICS BASED ON PETROGRAPHY, CUTTING, PRESSURE AND TEMPERATURE TEST IN SOKORIA GEOTHERMAL FIELD, ENDE REGENCY, NUSA TENGGARA TIMUR PROVINCE Purbiyantoro, Aldila Jasmine; Agus Didit Haryanto; Euis Tintin Yuningsih; Haris Siagian
Buletin Sumber Daya Geologi Vol. 15 No. 2 (2020): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v15i2.291

Abstract

Sokoria Geothermal Field is located at Sokoria Village, Ende Regency, Nusa Tenggara Timur Province. Petrographic analysis and Methylene Blue test (MeB) were carried out to estimate the illite-smectite ratio and occurence of other alteration minerals as indicator for cap rock, transition and reservoir zones. Pressure and temperature test (P&T test) was also performed to determine those zonation. The result concludes the geothermal caprock zone is distributed from the surface to the dept of 700 mVD (meter vertical depth), indicated by medium to high MeB index (20 – 80%), as smectite characteristic temperature up to 100°C. The transition zone is located from the depth of 700 mVD to 1100 mVD, with low MeB index (6 – 20%), as illite and illite–smectite characteristic and well temperature up to 200°C. Reservoir zone is located at 1100 mVD, indicated by very low MeB index (<10%),as characteristic of illite, with first appearance of epidote in well W-1 at 1119 mMD (meter measured depth) and well W–2 at 1338 mMD. P&T test shows reservoir temperature reached 250°C.
POLA ALIRAN PANAS BERDASARKAN ANALISIS FLUIDA DAN MINERAL UBAHAN DI DAERAH PANAS BUMI SORIK MARAPI, KABUPATEN MANDAILING NATAL, PROVINSI SUMATRA UTARA: HEAT FLOW PATTERN BASED ON ANALYSIS OF GEOTHERMAL FLUID AND ALTERATION MINERAL IN SORIK MARAPI REGION, MANDAILING NATAL DISTRICT, NORTH SUMATRA PROVINCE Azizi, Hisyam Azhar; Agus Didit Haryanto; Johanes Hutabarat; Dicky Muslim; Dewi Gentana; Ryan Hidayat
Buletin Sumber Daya Geologi Vol. 15 No. 3 (2020): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v15i3.309

Abstract

Sorik Marapi geothermal area in Mandailing Natal Regency, North Sumatra Province has a high-temperature geothermal system that is interpreted from the chemical characteristics of hot springs. The presence of alteration minerals such as epidot in exploration well cutting samples strengthens the estimated reservoir temperature reaches 235⁰C. The presence of hot water are more acidic hot spring around fumaroles and the minerals obtained from the drill well reflect the upflow zone while the hot spring group of neutral chloride water in the north with lower elevation reflects the outflow zone of the geothermal system here. This is a characteristic of hot fluid flow that occurs in geothermal areas of volcanic systems with steep terrain as well as Sorik Marapi area.
Karakteristik dan Petrogenesis Batuan Beku di Kecamatan Cisolok (Daerah Geopark Ciletuh-Palabuhanratu), Kabupaten Sukabumi Asti Gindasari; Mega Fatimah Rosana; Agus Didit Haryanto
Jurnal Geologi dan Sumberdaya Mineral Vol. 23 No. 3 (2022): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v23i3.692

Abstract

Lokasi studi yang terletak di daerah Ciletuh merupakan bagian dari Unesco Global Geopark dicirikan oleh batuan beku intrusif dan ekstrusif berumur Miosen. Batuan beku ini tersebar di sepanjang pantai dan sebagian membentuk perbukitan kecil. Tujuan studi ini adalah untuk mengkarakterisasi dan mengetahui petrogenesis dari batuan beku yang ada di daerah Cisolok. Metode kegiatan yang dilakukan menggunakan analisis petrografi, geokimia, XRF dan ICP-MS. Secara petrografis batuan dapat dikelompokkan menjadi batuan andesit porfiri dan dasit porfiri. Analisis kimia menunjukkan bahwa karakteristik batuan beku dibedakan menjadi jenis dasit, andesit, andesit basaltik, dan basal. Magma sebagai sumber pembentukan batuan beku memiliki komposisi metaluminous dari jenis magma seri calc alkaline, kecuali untuk contoh dari Pasir Randu yang merupakan jenis high-K calc alkaline series. Batuan tersebut terbentuk pada zona lingkungan subduksi dengan posisi continent arc, yang termasuk dalam tepi kontinen aktif.Katakunci: Batuan beku, Cisolok, geopark Ciletuh Palabuhanratu.
Co-Authors Asti Gindasari Azizi, Hisyam Azhar Dewi Gentana Dicky Muslim Euis Tintin Yuningsih Haris Siagian Johanes Hutabarat Mega Fatimah Rosana Purbiyantoro, Aldila Jasmine Ryan Hidayat