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Journal : IJOG : Indonesian Journal on Geoscience

Geophysical Investigation of Buried Small Fault Beneath Western Mount Malabar Using Electrical Resistivity Tomography in The Great Bandung Basin Rim Susanto, Kusnahadi; Harja, Asep; Ma’arif, Farham Rezqi; Mukhtar, Husneni
Indonesian Journal on Geoscience Vol. 11 No. 3 (2024)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.11.3.409-421

Abstract

This article presents the discovery of a buried fault beneath the soil layers in the Mt Malabar area, which complements the information on suspected faults on the previous geological maps. Using an Electrical Resistivity Tomography (ERT) method, this study aims to delineate the layer discontinuity as a fault and describe the subsurface geology. This study employed a 1400 m long ERT line as the main line to identify buried fault traces, while each ERT line has an 800 m long installation across the main ERT line to obtain the direction of the minor fault. The investigation found a minor fault in the rock layer at a high resistivity layer, approximately 160 m below the surface. The identified rock units are believed to include sandy clay in the upper layer, followed by tuff, sandstone, and basalt lava in the lower layer because its resistivity value is above 250 Ohm.m. The 3D ERT model interpreted a minor buried fault as a weak zone beneath the soil and obtained the fault strike at approximately N 310°E and dipping 66°. Furthermore, these results are strengthened by the geological map, which confirms that ERT L-1 and ERT L-3 profiles coincide with a suspected fault in the Qmt rock unit area.
Co-Authors Abdi JakaSumarimby Achmad Rizal Ahmad Akbar Khatami Ahmad Alfi Adz Dzikri Alia, Fenty Alief Fikri Sukarno, Muhammad Andi Majesta, I Made Arib Bady Hakim Tanjung Arik Geraldy Fauzi, Muhammad Asep Harja Asep Harja, Asep Asep Mulyana Aziz, Burhanuddin Azzahra Nadya Kahpiasa Bambang Setia Nugroho Basuki Rahmat Bena Bimantara, Wayan Abin Dandi Trianta Barus Desri Kristina Silalahi Dien Rahmawati Diena Yudiarti Doan Perdana Eka Afrima Sari Eka Afrima Sari, Eka Afrima Erwin Susanto Faisal Budiman Faris Fadhlur Rachman Fathonah, Indra Wahyudin Fenty Alia Fikri Ardian GERALDI, ARIK Ghibran Herlangga Zahra Rievansa Hafidh Al Asad Heni Pujiastuti Hesty Susanti Ig Prasetya Wibawa Ikhsan, Akhmad Fauzi Istiqomah istiqomah istiqomah Kahpiasa, Azzahra Nadya Kusna Susanto Kusnahadi Susanto Ledya Novamizanti Lovindo Nulova Makrus, Amar Chairil Mas Rizky A.A. Syamsunarno Maudina Citra Febriani Ma’arif, Farham Rezqi Mochamad Yudha Febrianta Muhammad Hablul Barri Muhammad Rayhan Ghifari Nadia Husnul Nasrullah, Muhammad Rafy Nicola Akmal Afrinaldi Nurdin, Agung Ihwan Parman Sukarno Prameswari Diahasna Tsany - Prastha Giriwara, I Made Pratama, Putu Yoga Ady Razzak, Taufiq Abdul Salam, Zulfikar Sheizi Prista Sari Sifa Nurpadillah Sindiarti, Ardila Siregar, Christian Halomoan SUDIYONO, OOY ARIE Sukmajaya, Jammy Suryo Adhi Wibowo Suto Setiyadi Suyoso, Qozein Arif Syah Putra, Heru Teuku Zulkarnain Muttaqien Wahmisari Priharti Wahyu Gunawan Widiyasari, Diyah Wijaya, Adhi Dharma Surya Willy Anugrah Cahyadi Wiyadhi, Muhammad Danung Putra Yakobus Yulyanto Kevin Yanti Rubiyanti Yoga Pujiraharjo Yogi Febrian Nursyamsa Yulius Anggoro Pamungkas Zaelani, Muhammad Mugni