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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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Structure and Tectonic Reconstruction of Bayah Complex Area, Banten Ahnaf, Jemi Saputra; Patonah, Aton; Permana, Haryadi; Ismawan, Ismawan
Journal of Geoscience, Engineering, Environment, and Technology Vol 3 No 2 (2018): JGEET Vol 03 No 02 : June (2018)
Publisher : UIR PRESS

The research aimed to reconstruct the geological structures and tectonics of the Bayah complex area. The structures found that grouped into regional structural patterns used to determine the ages and the events that responsible to its formation. The methods used in this research include field and studio method. Field method carried out to map the outcrops and record geological structures data using geological compass, GPS, tape measurement, and geological hammer, while studio method performed to process and analyze data using software such as Win Tensor, Dips, MapInfo Professional 10.5 and CorelDraw X4. The geological structure of the Bayah has varying patterns and ages. The fracture patterns show N-S and E-W direction which is belong to Sundanese and Java Pattern formed in range of the Early Eocene to Pliocene. While the faults that have direction of SW-NE and E-W are classified into Meratus and Java Pattern. However, metamorphic rock foliations show NW-SE and N-S direction that belonging to the Pre-Tertiary Sumatra Pattern. The three faults of this research are estimated to be formed by the effect of orogenesis that occurring in different events and ages. JSA-014 fault is predicted to form due to orogeny I or orogeny II in the Early Oligocene - Middle Miocene, this fault classified as the 2nd order right lateral wrench fault. JSA-034 fault is formed by orogeny I in Early Oligocene - Middle Miocene, this fault is also classified as the 2nd order right lateral wrench fault. While JSA-080 fault has relatively young age that formed due to orogeny III in the Middle Miocene - Pliocene and belonging to the 3rd order left lateral wrench fault.

Structure and Tectonic Reconstruction of Bayah Complex Area, Banten Jemi Saputra Ahnaf; Aton Patonah; Haryadi Permana; Ismawan Ismawan
Journal of Geoscience, Engineering, Environment, and Technology Vol. 3 No. 2 (2018): JGEET Vol 03 No 02 : June (2018)
Publisher : UIR PRESS

Petrogenesis of Volcanic Arc Granites from Bayah Complex, Banten, Indonesia Jemi Saputra Ahnaf; Aton Patonah; Haryadi Permana
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 2 (2019): JGEET Vol 04 No 02 : June (2019)
Publisher : UIR PRESS

This research aimed to reveal the petrogenesis of granitic rocks of Bayah Complex starting from magma differentiation to exposing event, this research also intended to determine the tectonic environment. The methods carried out in this research include field observation, petrographic analysis using polarized light microscopy, and geochemical analysis using X-Ray Fluorescence (XRF) and Inductively Coupled Mass Spectrometry (ICP-MS). Petrographic analysis shows that Bayah granitic rocks are composed of quartz, plagioclase, and K-feldspar while the rest are amphibole, biotite, sericite, chlorite, epidote, and opaque. Based on its major oxide concentrations, Bayah granitic rocks classified as granite and diorite-quartz which have high-K calc-alkaline magma. 4 samples of granitic rocks showed the A/N+K+C > 1 molar ratios belonging to the peraluminous S-type granite index while the remaining 1 sample showed a molar ratio of A/N+ K+C < 1 and A/N+K > 1 which classified as metaluminous I-type granite. Accordingly, Bayah granitic rocks are S-type granite which crystallized from sediment-derived magma, the sediments itself estimated sourced from continental especially Malay Peninsula, Indonesian Tin Island, and Schwaner Mountains. During differentiation, the magma undergone crustal contamination reflected by the increase in both SiO2 0.51 wt% and Al2O3 1.95 wt%, and decrease in Fe2O3 + MgO 0.61 wt% from the pure composition of sediment-derived magma. Furthermore, the occurrence of crustal contamination also recognized from high concentrations of Rb and Ba which indicate the interaction of magma with the materials of continental crust. Regard to the exposing event, Bayah granitic rocks approximated to be exposed due to regional tectonic activity which caused Orogenesa I in the Early Oligocene to the Late Oligocene. Moreover, based on the plot of trace elements especially Rb, Y, Nb, Ta, and Yb on Harker and tectonic discriminant diagrams, Bayah granitic rocks are formed on volcanic-arc active continental margins in accordance with regional tectonic setting.

The Transitional Gabbroic Rocks in Bayah Geological Complex, Western part of Java, Indonesia, Inferred from XRF, ICP-MS, and Microprobe Analysis Aton Patonah; Haryadi Permana; Ildrem Syafri
Journal of Geoscience, Engineering, Environment, and Technology Vol. 6 No. 4 (2021): JGEET Vol 06 No 04 : December (2021)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2021.6.4.7189

Gabbro, is a fossil remnant of oceanic crust in western part of Java, found at Bayah Geological Complex (BGC) and Ciletuh Melange Complex (CMC), Indonesia. It has been studied by using petrographic, X-Ray Fluorescence (XRF), and inductively coupled plasma-mass spectrometry (ICP-MS) and mineralogical (microprobe) analyses. Mineral and geochemical composition of these rocks provide important clues to their origins since the rocks have been deformed and gone through auto metamorphism, beside they contain the economic mineral and or rare earth elements (REE). Gabbroic rocks in these two areas generally shows phaneritic to porphyritic texture, granular texture. These rocks in CMC are dominated by plagioclase (oligoclase to albite), hornblende, pyroxene, partly altered to tremolite, actinolite, chlorite, epidote, and sericite; meanwhile those of BGC dominantly consist of plagioclase, pyroxene, hornblende, some present of chlorite, actinolite, epidote and biotite as secondary minerals. In multi-element diagrams, gabbroic rocks in CMC show strong negative Sr and Zr, but positive Nb anomaly, while those of BGC show strong negative anomaly of Nb and Zr. In addition, based on rare earth elements (REE) diagrams, gabbroic rocks in CMC show depleted of light rare earth elements (LREE) with negative Eu anomaly, while gabbro’s in BGC show enrichment of LREE. These characteristics indicate that GBC’s and CMC’s gabbroic rocks came from different magma sources, one was formed by partial melting of depleted upper mantle reservoir while the other one was formed by partial melting of mantle wedge with active participation of subducted slab in an arc tectonic setting, suprasubduction zone which were formed at started Upper Cretaceous to Paleogene, and they had retrograde metamorphism to epidote amphibolite facies.

Characteristic of Mineral Alteration of Geothermal in Endut Mount Based on Petrography, Spectra, XRD, and MeB methods Patonah, Aton; Ramadhani, Rifqi Fadhil; Nurdin, Nizar M
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 1 (2026): JGEET Vol 11 No 01 : March (2026)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2026.11.1.21933

Endut Mount is one of the geothermal prospect locations in Indonesia. In order to optimize the geothermal potential of the research area, it is necessary to conduct research on geothermal characteristics. One such study is the examination of altered minerals in geothermal manifestations. The primary objective of this research is to conduct alteration investigations utilizing coring data obtained from the drilling of Well 1 by petrography, MeB, Spectra, and XRD method approaches. The result of the research shows that the lithology of this Well is a product of Endut Mount activity, with an intensity ranging from medium to strong. The lithology is composed of altered tuff and altered andesite breccia, which are a product of the Pleistocene period, and altered volcanic breccia and altered tuff breccia, which are a product of the Miocene period. This lithology is based on the oldest to the youngest succession. The alteration assemblages in Well 1 are classified into two zones based on the assemblage of alteration minerals: the illite-chlorite±epidote zone, which is located at a depth of 9.7– 40.9 MD, and the smectite-sericite-chlorite-epidote zone, which is located at a depth of 40.9 – 111.15 MD. The type of alteration in Well 1 is propylitic, with a neutral pH and a temperature range of 200oC to 300oC, as indicated by the mineral composition and alteration zone. This alteration zone has the potential to function as a reservoir zone.

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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