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All Journal Bulletin of Scientific Contribution : Geology JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards)
Taufiq Widiaputra, Taufiq
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Environmental Science

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Identification of Volcanic Breccia Formation Distribution in Relation to Groundwater Aquifer Potential Using 3D Resistivity Data Modelling Fatahillah, Hilmi El Hafidz; Ratna, Putri Natari; Septiawan, Fardy; Pratama, Ridho Nanda; Al Ghiffari, Muhammad Razzaaq; Wicaksono, Noviarso; Hidayat, Wahyu; Noor, Mochamad Rifat; Widiaputra, Taufiq; Aziz, Muhammad Luthfi; Ramadhan, Rachmat
Jurnal Lingkungan dan Bencana Geologi Vol 14, No 3 (2023)
Publisher : Badan Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34126/jlbg.v14i3.484

Abstract

Electrical resistivity tomography (ERT) method has been widely used in environmental surveys including hydrogeology study to provide images of the subsurface resistivity distribution. In this study, ERT survey using Wenner - Schlumberger electrode configuration was conducted to investigate the distribution of groundwater aquifer potential in the area dominated by various weathered volcanic rocks that unconformably overlaid limestone formation. The resistivities were measured using ARES resistivity meter each with total of 48 electrodes. The resistivity data were then processed using the robust inversion method that is more optimal to characterize sharp lithological boundary transitions observed in the study area. The resistivity value of the inverted model is interpreted into three different lithologies, namely soil (1.82-5 Ωm), volcanic breccias (5-20 Ωm) and limestone (>20 Ωm). This lithological interpretation was confirmed by borehole cutting report from the nearby well, regional geological map, and direct geological observation. Further, the inverted ERT section along with geological observation indicated volcanic breccias as an aquifer potential in the study area. The 2D resistivity cross-section is then gridded to obtain a 3D model of the potential aquifer geometry. From the model, the volume of volcanic breccia which is suspected as an potential aquifer layer is estimated at 122,392,828 m3.
BASEMENT KOMPLEK BAYAH, KABUPATEN LEBAK, PROPINSI BANTEN Patonah, Aton; Helmi, Faisal; Prakoso, Jodi; Widiaputra, Taufiq
Bulletin of Scientific Contribution Vol 13, No 3 (2015): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1254.822 KB) | DOI: 10.24198/bsc.v13i3.8405

Abstract

Researching metamorphic rocks in Bayah and in its surrounding area has slight data so it has not been clear yet how the stratigraphic position, the age and the metamorphic rocks characteristic is in the study area. By using geological mapping and petrographic method, it showed that the metamorphic rock is believed to be the basement of Bayah complex which accreted because of reverse fault in the northwest so that the rock appeared together with the relatively younger rocks in the south (Bayah Formation and Granodiorite Cihara). These rocks showed that there are foliation, boudinage and crenulation structure consisting of various types of metamorphic rocks which are different in degrees of metamorphism (low grade – high grade metamorphism) and in protoliths as well, so these interpret as a result of orogenic processes of intermediate pressure metamorphism.
Co-Authors Al Ghiffari, Muhammad Razzaaq Aton Patonah, Aton Aziz, Muhammad Luthfi Faisal Helmi Fatahillah, Hilmi El Hafidz Jodi Prakoso, Jodi Noor, Mochamad Rifat Noviarso Wicaksono Pratama, Ridho Nanda Rachmat Ramadhan, Rachmat Ratna, Putri Natari Septiawan, Fardy Wahyu Hidayat