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All Journal Bulletin of Scientific Contribution : Geology Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Journal of Geoscience, Engineering, Environment, and Technology Buletin Sumber Daya Geologi Jurnal Geominerba Journal of Geosciences and Applied Geology

Aton Patonah

Fakultas Teknik Geologi, Universitas Padjadjaran

Author-ID : 568181

Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Physics Public Health Other

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Petrogenesis of Andesite in Cisanggarung area, Cimenyan District, Bandung Regency, West Java Imaniar, Nurul; Patonah, Aton; Prambada, Oktory
Bulletin of Scientific Contribution Vol 19, No 3 (2021): Bulletins of Scientific Contribution : Geology
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc.v19i3.35798

The Cisanggarung area is located in Cimenyan District, Bandung Regency, an area composed of volcanic products that many thick outcrops are found and used as andesite mines managed by local communities. This study examines the characteristics of andesite in the Cisanggarung area using petrology, petrography, XRF, and ICP-MS so that petrogenesis can be interpreted. Andesite rocks in the Cisanggarung area have a sheeting joint structure and microscopically have porphyritic, trachytic, glomeroporphyritic, zoning, embayment, and sieve textures. The composition of this rock was plagioclase, pyroxenes, opaque minerals with the less content of secondary minerals such as chlorite and clay minerals. The magmatic affinity of this rock shows calc-alkaline series, precisely in tholeiitic island arc tectonic setting associated with subduction, which is characterized by TiO2<1.3 wt.%. Magma presumably comes from a continent plate with a depth of 127.87-136.92 km. Magma in this area undergoes a middle-stage differentiation process, namely assimilation and fractionation crystallization. The magmatism process forms two stages of crystallization, starting from the slow cooling stage, followed by relatively fast magma to the surface.

SISTEM PANAS BUMI DAERAH KALAWAT, KABUPATEN MINAHASA UTARA, PROVINSI SULAWESI UTARA Yamin, Riza Asyari; Patonah, Aton; Hardiyono, Adi; Hadi, Muhammad Nur
Bulletin of Scientific Contribution Vol 13, No 1 (2015): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Kalwat Geothermal Field administratively is located in North Minahasa District, North Sulawesi Province. Litologies of this research area divided by pyroclastic flows and lava. The heat source of this location comes from Mahawu Mountain that located in the southwest outside the research area. Lithology which acts as the cap rock layer is form by pyroclastic flow that has clay minerals which impermeable. Based on petrographic and PIMA abalysis, the alteration minerals that arise are dominated bu montmorillonite and halloysite, so the alteration type of this research area is argilic type and located at the northwest and southwest of research area. The water type that appears are dilute chloride-bicarbonate type and bicarbonate type. Based on the calculation of paleotemperature and geothermometer, there is increase of temperature during the form of mineral and the recent temperature. This is due to increased of volcanic activity in the research area. This research area is water-dominated and moderate temperature system that has range of temperature at 209-2100 C.

PENGARUH KEMIRINGAN LERENG TERHADAP LAJU SEDIMENTASI PADA RENCANA BENDUNGAN PARIGI Yusuf, Muhammad Farhan; Siahaan, Yakub; Sukiyah, Emi; Mulyo, Agung; Patonah, Aton; Zakaria, Zufialdi
Bulletin of Scientific Contribution Vol 16, No 2 (2018): Bulletin of Scientific Contribution GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Pembangunan Bendungan Parigi akan sangat bermanfaat untuk kepentingan masyarakat. Bendungan ini akan digunakan untuk keperluan pertanian (irigasi) dan persediaan air baku. Lokasi Rencana Bendungan Parigi terletak pada sub-DAS Parigi yang memiliki luas 57,98 km2. Dalam perencanaan bendungan aspek sedimentasi sangat penting. Aspek ini akan berkaitan dengan desain Bendungan. Pada DAS yang tidak terlalu luas, laju sedimentasi setara dengan laju erosi. Perhitungan laju sedimentasi dilakukan berdasarkan fungsi erosi dengan metode Universal Soil Loss Equation (USLE) dan SDR. Metode ini berhubungan dengan faktor – faktor yaitu erodibilitas tanah, curah hujan, tataguna lahan, dan topografi. Faktor kemiringan lereng erat kaitannya terhadap laju sedimentasi, penelitian ini akan membahas tentang peranan kemiringan lereng terhadap laju sedimentasi. Nilai laju sedimentasi hasil perhitungan menggunakan metode USLE yaitu sebesar 149,53 ton/ha/th. Hasil perhitungan statistik dengan metode regresi linier di dapat bahwa faktor kemiringan lereng berpengaruh signifikan terhadap laju sedimentasi dengan persamaan regresi Y’ = 15,32 + 7,313X. Nilai koefisien regresi (r) sebesar 0,697 menunjukkan bahwa ada hubungan yang kuat antara kemiringan lereng (X) dan laju sedimentasi (Y). Pengaruh yang diberikan oleh aspek kemiringan lereng terhadap laju sedimentasi adalah sebesar 48,6 %.

Pendugaan Temperatur Bawah Permukaan Berdasarkan Kehadiran Mineral Alterasi Pada Sumur Llk-1 Lapangan Panasbumi Lilli, Kabupaten Polewali Mandar, Provinsi Sulawesi Barat Adzka, Fazillah; Patonah, Aton; Robertus, Simarmata S. L.
Bulletin of Scientific Contribution Vol 14, No 3 (2016): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Lapangan Panasbumi Lilli secara adminstratif termasuk ke dalam wilayah Kecamatan Matanga, Kabupaten Polewali Mandar, Provinsi Sulawesi Barat. Hasil penyelidikan terdahulu diketahui memiliki daerah prospek seluas 18 km2 yang masih membuka ke arah utara. Fokus penelitian ini adalah memperkirakan temperatur bawah permukaan dari sumur LLK-1 untuk menentukan zona reservoir dan zona penudungnya. Metode yang digunakan adalah petrografi dan alat SpecTerra untuk mengetahui jenis mineral lempung. Berdasarkan deskripsi dan analisis komposisi mineral primer dan alterasi pada batuan dari sumur tersebut diketahui bahwa batuan pada sumur LLK-1 dari bawah ke permukaan adalah porfiri andesit terubah dan andesit terubah. Mineral alterasi yang hadir adalah saponite, monmorilonite, smectite, chlorite, mineral oksida dan pirit. Berdasarkan asosiasi mineral alterasi tersebut, zona alterasi terbagi ke dalam 2 zona, yaitu zona smectite dan zona smcetite-chlorite yang merupakan sebanding dengan tipe argilik dan subprofilitik, terbentuk pada temperatur 50oC – 230oC. Hasil data tersebut, maka sumur LLK-1 masih termasuk ke dalam zona penudung. Kata Kunci : Alterasi, Paleotemperatur, Panasbumi Lilli Lilli Geothermal Field administratively located in Matanga, Polewali Mandar Districts, West Sulawesi. Result from latest investigation shows that this area have a prospect about 18 km2 with distribution spreading probabilility to the North. Focus of this research is to estimate temperature below the surface from well LLK-1 (Lilli Geothermal field) to understand the reservoir and caps rock zone using petrography and SpecTerra measurement. Based on description and primary mineral composition, also from mineral alteration, well LLK-1 has altered andecite porfiri to altered andecite. Alteration mineral that can be found are saponite, montmorilonite, smectite, chlorite, oxide mineral and pyrite. From the alteration mineral association, alteration zone can be divided into two zone, there are smectite and smectite-chlorite zone that comparable with argilic and subpropilitic type that can be formed at 50°C - 230°C. It is conclude that LLK-1 well still include in the caps rock zone so the reservoir zone cannot be determined. Keywords: Alteration, Paleotemperature, Lilli Geothermal Field

KARAKTERISTIK BATUAN METAMORF BAYAH di DESA CIGABER, KABUPATEN LEBAK, PROVINSI BANTEN Patonah, Aton; Syafri, Ildrem
Bulletin of Scientific Contribution Vol 12, No 2 (2014): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Metamorphic rocks in Bayah Complex included by Bayah mountain zone. Purpose of this research is to know characteristic of this rock with using petrography methods, that is, identify texture, structure, mineral contain, and metamorphic facies of the rocks. The result showed that kind of the rock is dominated by biotite schist, some actinolite schist, hornblend schist and chlorite schist. Almost all them have retrograde metamorphism, is characterized by biotite altered to chlorite and muscovite, hornblende to actinolite, and actinolite to chlorite. This proses probably associated by uplift processes in Eocene – Oligocene.

PETROLOGI AMFIBOLIT KOMPLEK MELANGE CILETUH, SUKABUMI, JAWABARAT -, Aton Patonah; -, Haryadi Permana
Bulletin of Scientific Contribution Vol 8, No 2 (2010): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Amphibolite is part of Ciletuh mélange complex that was exposed together with serpentinite, harzburgite, dunite, gabro and basalt. The rock is dominated by amphibole and andesine and rarely can be observed quartz. At some locations, the rocks have changed to ampbibolite epidote (oligoclase + hornblende + actinolite + epidote + chlorite). The result of mineral paragenesis and measurement of pressure and temperature indicates that amphibolites was formed of 5 kbar – 6 kbar with temperature 640oC – 660oC. Meanwhile amphibolites epidote was formed of 4 kbar – 5 kbar with temperature 410oC – 455oC. Obtaining pressure and temperature from amphibolites is indicated as result of obduction and then it has retrograded metamorphism to amphibolites epidote because of accretion and uplifting at Upper Oligosen. The indication is characterized by actinolite changed to chlorite, albite and epidote have replaced andesine, and another indication is the rim of hornblende is replaced by actinolite.

ALTERASI MINERALISASI GRANODIORIT CIHARA DAN SEKITARNYA, KABUPATEN LEBAK, BANTEN Patonah, Aton; Permana, Haryadi; Rosyid, Vendi Hakim Ar; Ramadhan, Taufik
Bulletin of Scientific Contribution Vol 18, No 3 (2020): 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.v18i3.30930

Penambangan emas di Cihara dan sekitarnya yang dilakukan oleh masyarakat setempat menarik untuk diteliti, karena keberadaan emas semakin berkurang, khususnya pada granodiorit, Ketika dilakukan penambangan semakin dalam. Tujuan penelitian ini adalah untuk mengidentifikasi karakteristik alterasi dan mineralisasi serta tipe endapan dengan pendekatan observasi lapangan dan analisis laboratorium, yaitu petrografi, mineragrafi dan AAS. Hasil menunjukkan bahwa alterasi di daerah penelitian dibagi menjadi 3 (tiga) zona; (1) zona serisit – klorit – epidot – kuarsa – karbonat (2) zona kuarsa – karbonat – klorit – serisit - biotit (3) zona klorit – karbonat – kuarsa – serisit. Lebih lanjut lagi, mineralisasi yang tersingkap di daerah ini didominasi oleh pirit, sfalerit, galena, sebagian kecil hadir mineral kalkopirit, kovelit dan emas. Logam dasar umumnya terdapat pada urat kuarsa bersama dengan emas; sementara pada granodiorit (disseminasi), jumlahnya berkurang. Hal ini ditunjukkan dengan data hasil assay bahwa kadar logam dasar dan emas relatif lebih tinggi pada urat kuarsa dibandingkan pada tekstur disseminasi. Berdasarkan data – data tersebut, jenis endapan di daerah tersebut memiliki kemiripan dengan endapan porfiri yang berasosiasi dengan karbonat – logam dasar.

SISTEM PANASBUMI BERDASARKAN ANALISIS GEOKIMIA AIR PANAS DAERAH AMOHOLA DAN SUMBERSARI, KECAMATAN MORAMO, KABUPATEN KONAWE SELATAN, PROVINSI SULAWESI TENGGARA Aprilia, Fitriani Dewi; Yuningsih, Euis Tintin; Patonah, Aton; Rezky, Yuano; Yushantarti, Anna; Nurdin, Asep
Bulletin of Scientific Contribution Vol 13, No 1 (2015): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

The research area is located in Amohola and Sumbersari, Moramo sub-district, Konawe South regency, Southeast Sulawesi Province. Geographically located between 122°35’6,07" – 122°45'58,94" BT dan 4°5'20,28" – 4°16'10,85" LS. The research areas have a stratigraphy consisted of Meta-limestones, Phylite, Schist, Quartzite, Conglomerates, Limestones, Carbonate Sandstone, Claystone, and sediment surface. Hot waters have temperatures ranging from 37,5oC to 50oC. The fluid geochemical data affirm that the Amohola area has Chloride type of water, which indicates it is close to the heat source, whereas in Sumbersari area has Bicarbonate water type, which indicates that the fluid has affected by meteoric water. Geothermal system in these two areas assumed that has separated by tectonic activity and the emersion of the lithology affected the chemical content of the hot fluid. The Geotermometer indicates that the subsurface of Amohola manifestations temperatures are around 146°C (medium enthalpy), whereas in Sumbersari 43°C (low enthalpy).

LINGKUNGAN TEKTONIK OFIOLIT KOMPLEK MELANGE CILETUH JAWA BARAT BERDASARKAN PENDEKATAN PETROLOGI -, Aton Patonah
Bulletin of Scientific Contribution Vol 9, No 3 (2011): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

The ophiolite sequence of Ciletuh Melange Complex consist of serpentinite, serpentinized harzburgit, dunit, gabro and basalt. Part of the ophiolite partly has been metamorphismed, produce metamorphic rocks. The result of mineral chemical analisis which is supported by geochemical date, the rock shows that the similar character with Duaga Island – Witu Island, Papua Newguinea and Mariana Trench Island arc, that is Island Arc It is signed by the low of forsterite (80-82), there is the existence of magmatic impregnation process, the low Al content in pyroxen showed the increase of degree of partial melting which followed by the increase Si, Mg and Ca content, meanwhile Ti, Cr and Na content decrease followed by the increase degree of partial melting. The ophiolite rock which appear in complex mélange Ciletuh has closed relationship with tectonic setting process which happened in that area. Those approximately happened on Tersier age (Eosen- lower Oligosen), that is accretional is formed in complex mélange Ciletuh, subduction zone move to the west with the direction north-northwest – south-southeast by the appearance of litological, by the present of ultramafics rocks which tectonized and consist of serpentinite and pillow lavas and mixed with sedimen pond. As the same time, also is formed obduction so that result metamorphism process and became metamorphic rock.

PETROLOGY OF HIGH PRESSURE METAMORPHIC ROCKS FROM LUK ULO MELANGE COMPLEX, KARANGSAMBUNG, CENTRAL JAVA-INDONESIA -, Aton Patonah; -, Haryadi; -, Bambang Priadi
Bulletin of Scientific Contribution Vol 7, No 1 (2009): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Luk Ulo Melange Complex is situated in Central Java, this complex is characterized by the occurrence of Tertiary and Pre-Tertiary rocks as fragments embedded in sheared clay matrix. The fragments consist of ophiolite, metamorphic, chert and carbonate rocks. This research is focused to high pressure metamorphic rock which is represented by glaucophane schist. The rocks consists of albite, augite and ferroaugite, Mg – cataphorite, glaucophane, ferrian and crossite, almandine spesartine, quartz; and rarely can be observed lawsonite, hornblende, tremolite and actinolite. The latter mineral assemblage indicates that the rock was formed at 580oC - 500oC and 14,5 - 4 kbar. Temperature and pressure obtained from glaucophane schist indicated that the rock came from the lower interval of the subduction environment and the possibility have already been in retrograde stage. This is showed by recrystallization of amphibole-glaucophane to sericite or chlorite, and chlorite after garnet. This may represent the retrograde stage in lower temperature-pressure conditions. This data explains the accretion and exhumation history of high pressure metamorphic rocks from subduction depth to the surface condition.

Co-Authors abdurrohman, Muhammad jihad Adi Hardiyono Adjat Sudradjat Agung Mulyo Ahnaf, Jemi Saputra Alamsyah, Fadhli Alfadi, Muhammad Kurniawan Anna Yushantarti, Anna Asep Nurdin, Asep Bahtiar, Wisnu Indra Bambang Priadi -, Bambang Priadi Barkah, Mochamad. Nursiyam DEWI FITRIANI Dwi Purnomo Edi Tri Haryanto Edi Tri Haryanto, Edi Tri Emi Sukiyah Euis Tintin Yuningsih Fadilah, Rizqi Faisal Helmi Faisal, Reza Mochammad Fauzi, Ridwan Nur Fazillah Adzka, Fazillah Febriwan Mohamad Flaurentina Nadya Haryadi - Haryadi Permana Haryadi Permana Haryadi Permana Haryadi Permana Haryadi Permana -, Haryadi Permana Hirose, Kazuyo Hutauruk, Gita Agnes Meilani Ichsan, Muhamad Ildrem Syafri Imaniar, Nurul Irvan Sophian -, Irvan Sophian Ismawan Ismawan Ismawan Ismawan, Ismawan Iwan Nursahan Iyan Haryanto Jemi Saputra Ahnaf Jemi Saputra Ahnaf Jodi Prakoso, Jodi Juan Aprilio Rafael L P KHOLIS, NUR. Kurnia Arfiansyah, Kurnia Matano, Alan Maulana, Muhammad Hafidz Mega Fatimah Rosana Mochammad Nurhadi Muhammad Nur Hadi Musyaffa, Muhammad Ayyasy Nurdin, Nizar M Pradnya P. Raditya Rendra Pradnya Paramarta Raditya Rendra Prambada, Oktory Prima M Hilman putera, alvindo andreansyah Ramadhani, Rifqi Fadhil Ramdhani, Muhammad Alfi Gilang Ridwan, Panji Rina Devnita Riza Asyari Yamin, Riza Asyari Rosyid, Vendi Hakim Ar sabily, zulfa Santi Dwi Pratiwi Sapari Dwi Hadian -, Sapari Dwi Hadian Siahaan, Yakub Silalahi, Natha Nuel Simarmata S. L. Robertus, Simarmata S. L. Subagja, Agam Sulastri, Murni Taufik Ramadhan Taufiq Widiaputra, Taufiq Tresnasari, Endah Trisusanti, Eliana Undang Mardiana Vanessa, Agata Vijaya Isnaniawardhani Yuano Rezky, Yuano Yusuf, Muhammad Farhan Zufialdi Zakaria

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