Identify the Distribution of Galena using Induced Polarization and Resistivity Methods in central of Lombok, West Nusa Tenggara

Azis, Asnur; Zamhuri, Muh. Adimaher; Rais, Muh. Iqbal; Syamsuddin, .; Aswad, Sabrianto; Patiung, Obed; Sudianto, Yanto

doi:10.1088/1755-1315/279/1/012046

Cited by 3 publications

(3 citation statements)

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“…Agar memastikan potensi tersebut sesuai harapan, perlu adanya pendekatan metode tidak langsung untuk mengecek keberadaan batu andesit, salah satunya menggunakan metode geolistrik profiling. Metode ini merupakan teknik resistivitas 2D yang umum digunakan dalam menganalisis lapisan air tanah (Antosia et al, 2022;Antosia and Ramdan, 2023;Gemilang et al, 2018;Minarto et al, 2021;Padlilah et al, 2021), mengindentifikasi bidang gelincir untuk zona rawan longsor (Simanjuntak and Cahyo, 2022;Souisa et al, 2015;Taufiqurrohman et al, 2017), mengeksplorasi mineral tambang (Arifin et al, 2019;Azis et al, 2019;Bahri et al, 2021;Fernandes et al, 2018;Yuniarto, 2020), dan tentunya dapat juga digunakan untuk investigasi sebaran batu andesit (Antosia et al, 2021;Prastowo, 2018;Ratminah et al, 2021;Simamora et al, 2021;Wahyono et al, 2020).…”

Section: Pendahuluanunclassified

Identifikasi Persebaran Batuan Andesit Sebagai Bahan Utama Agregat Menggunakan Metode Geolistrik Profiling Konfigurasi Wenner-Alpha

Setiawan,

Antosia,

Nugraha

2023

jurgeo

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Penelitian ini dilakukan untuk mengidentifikasi persebaran batuan andesit sebagai bahan utama agregat menggunakan metode geolistrik profiling dengan konfigurasi elektroda Wenner-Alpha. Lokasi penelitian dilakukan di Desa Tarahan, Kecamatan Katibung, Kabupaten Lampung Selatan karena daerah tersebut memiliki potensi andesit yang melimpah secara geologi. Akuisisi data di daerah tersebut difokuskan pada daerah "andesit 01" dengan luas area sekitar 10.000 m 2 sebanyak 3 lintasan, masingmasing sepanjang 100 m dengan spasi elektroda 5 m. Kemudian, ada satu lintasan tambahan diletakan pada singkapan di luar daerah tersebut. Lalu, terdapat juga sampel batuan tufa dan andesit yang dilakukan uji nilai resistivitas di laboratorium. Pengukuran singkapan dan sampel batuan dilakukan untuk mengonfirmasi batas nilai resistivitas pada penampang 2D. Berdasarkan profil resistivitas pada singkapan, andesit memiliki nilai resistivitas lebih dari 173,5 Ωm. Sedangkan, hasil pengujian sampel menunjukkan bahwa nilai resistivitas batu andesit sebesar kurang lebih 171 Ωm dan batu tufa sekitar 131 Ωm. Maka, hampir di seluruh area studi dipenuhi dengan batuan andesit dan menyebar ke segala arah walaupun ada sedikit sebaran batuan tufa ke arah selatan mulai kedalaman 8-10 m. Dengan demikian, potensi andesit tersebut layak diproduksi untuk keperluan domestik.

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Section: Pendahuluanunclassified

Identifikasi Persebaran Batuan Andesit Sebagai Bahan Utama Agregat Menggunakan Metode Geolistrik Profiling Konfigurasi Wenner-Alpha

Setiawan,

Antosia,

Nugraha

2023

jurgeo

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“…Interpretation [70] Pb-Zn deposit Sulphides (galena, sphalerite, pyrite and marcasite) [26] manganese deposits manganese deposits (pyrite, chalcopyrite),Fe oxides [71] Gold exploration Disseminated sulphides (pyrite, chalcopyrite),iron oxides [34] Water exploration Sand with heavy minerals [72] Detecting cracks in clay rocks 13% Pyrite in calcite rock [73] Detection of ore bodies [74] Metalliferrous veins exploration Presence of Barite and Galena [75] Plutonic rock mineral exploration Sulphure mineralizations [76] Plutonic rock mineral exploration Ore deposits [77] Galena exploration Pyrite, chalcopyrite, galena [35] Volcanic geothermal area Pyrite, iron oxides [78] Case study alluvial fans High clay content [47] Hydrocarbon contamination Clayey silt [34] Water exploration Weathered rock leaching clay minerals [79] Slope study Clay [72] Detecting cracks in clay rocks Clay rocks [80] Landfill characterization Clayey till [52] Mapping of lithotypes Clay till [81] Landfill characterization Waste, plastic and metal [82] Landfill characterization Waste, soil with leachate [80] Landfill characterization Waste and leachate [83] Landfill characterization Waste Figure 12a illustrates the difficulty of interpreting normalized chargeability data when no in-situ information is available. Except for the group Landfill that is well distinguished from the others and could possibly be discriminated based only on the normalized chargeability values, all the other groups are mixed together with values approximately in the range [0.01-1] mS/m.…”

Section: Reference Context Of Surveymentioning

confidence: 99%

Induced Polarization as a Proxy for CO2-Rich Groundwater Detection—Evidences from the Ardennes, South-East of Belgium

Defourny

Nguyen

Collignon³

et al. 2020

Water

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CO 2 -rich mineral groundwaters are of great economic and touristic interest but their origin and circulation paths in the underground are often poorly understood. A deeper understanding of the system plumbery and the development of non—to minimally—invasive near-surface geophysical methods for the prospection of potential productive areas is therefore of great interest to manage future supply. The objective of this contribution is to assess the ability of the time-domain induced polarization (TDIP) method, combined with the electrical resistivity tomography (ERT) method, to make the distinction between CO 2 -rich groundwater from non-gaseous groundwater. Three combined ERT/TDIP tomographies were performed above known uplift zones in the south-east of Belgium where thousands of CO 2 -rich groundwater springs exist. On all profiles, important contrasts in both electrical resistivity and chargeability distributions were observed in the vicinity of the upflow zone, also reflected in the normalized chargeability sections computed from the measured data. Low resistivity vertical anomalies extending in depth were interpreted as a saturated fracture network enabling the upflow of deep groundwater to the surface. High chargeability anomalies appearing directly close to the CO 2 -rich groundwater springs were inferred to metallic oxides and hydroxides precipitation in the upper part of the aquifer, linked to pressure decrease and changing redox conditions in the up-flowing groundwater approaching the land surface. The combined interpretation of electrical resistivity and induced polarization datasets provides a very promising method for a robust prospection of CO 2 -rich groundwater.

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“…The second one is the induced polarization method, which is generally applied to mineral exploration, for instance, gold [18][19][20][21][22][23][24][25], copper [26,27], and galena [28,29]. However, only a few researchers utilized it for underground cave detection, all deployed dipole-dipole arrays [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Beneath the Surface: Identifying Subsurface Caves in "Gua Pandan" Using Integrated Electrical Profiling Method

et al. 2023

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One of the geopark tourism areas in East Lampung Regency, "Gua Pandan," has run into rock subsidence on the surface. As part of the subsidence prevention, indirect electrical methods between resistivity and chargeability profiling were applied to identify the presence of a subsurface cave in the study area. Two measurement lines were carried out with Wenner Alpha and Wenner Schlumberger arrays. Because the depth target is shallow (approximately 10 m) and to obtain a better resolution, each line has a stretch length of 70 m and 2 m electrode spacing. A line was measured over a known underground cave to produce a desired outcome, and the other was in an area with no cavities. Based on the results from each profile of resistivity and chargeability, an air-filled target has a value of over 5,000 and under 6 ms, respectively. Then, integrated processing of both methods generated a metal factor (MF) profile to view the presence and estimated shape of the cave/ cavities. The result represents that an MF value under 1.5 ms/Ωm is a cavity, and solid rock is over 1.5 ms/Ωm. Also, the MF level from both configurations delineates a similar section. However, a modest difference occurs in estimating the cavity shape geometry, for Wenner Apha and for Wenner Schlumberger. Furthermore, this study can be an initial step in safety assessment in the area.

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Identify the Distribution of Galena using Induced Polarization and Resistivity Methods in central of Lombok, West Nusa Tenggara

Cited by 3 publications

References 1 publication

Identifikasi Persebaran Batuan Andesit Sebagai Bahan Utama Agregat Menggunakan Metode Geolistrik Profiling Konfigurasi Wenner-Alpha

Identifikasi Persebaran Batuan Andesit Sebagai Bahan Utama Agregat Menggunakan Metode Geolistrik Profiling Konfigurasi Wenner-Alpha

Induced Polarization as a Proxy for CO2-Rich Groundwater Detection—Evidences from the Ardennes, South-East of Belgium

Beneath the Surface: Identifying Subsurface Caves in "Gua Pandan" Using Integrated Electrical Profiling Method

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