Application of 2-D Resistivity Imaging and Seismic Refraction Method in Identifying the Structural Geological Contact of Sedimentary Lithologies

Amalina, M. K. A. Nur; Nordiana, M. M.; Bery, Andy Anderson; Anuar, Mohammad Noor Akmal; Maslinda, Umi; Sulaiman, Nabila; Saharudin, Muhamad Afiq; Hisham, Hazrul; Nordiana, A. N.; Taqiuddin, Z. M.

doi:10.1088/1755-1315/62/1/012005

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…2D resistivity and seismic refraction have become one of the most common methods used in shallow subsurface investigations. They have been implemented to delineate geological faults (Saetang et al 2014;Nur Amalina et al 2017;Nyabeze et al 2018), finding groundwater (Moustafa et al 2013, Ashraf et al 2018Azhar et al 2019), and characterize subsurface and identifying the type of soil (Hazreek et al 2015;Mad Said et al 2015;Al-Heety and Shanshal 2016;Akip Tan et al 2018). 2D resistivity method is susceptible to the distribution of electrical resistivity in the subsurface.…”

Section: Introductionmentioning

confidence: 99%

Soil Classification From Resistivity and P-Wave Seismic Velocity With Support of Particle Size Distribution (Psd) Analysis

Abdullah¹,

Ismail²,

Roslan³

et al. 2022

Proceedings of the 5th International Conference of Geological Engineering Faculty

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It is encouraged to use more than one geophysical method when conducting a field survey. It can help improve the subsurface interpretation and reduce the ambiguity inherent from inversion of geophysical method. 2D resistivity and seismic refraction methods were conducted to map and characterize the subsurface at Desasiswa Indah Kembara, Universiti Sains Malaysia, Pulau Pinang. The inversion profile shows that the subsurface has two zones with a resistivity value of 150-500 Ω m (Zone A) and 5-100 Ωm (Zone B). On the other hand, the subsurface velocity is 0.3-0.6 km/s (Zone A) and 0.75-1.5 km/s (Zone B). However, the standard reference tables of resistivity and velocity value of soil and rock show variation and overlapping values that can affect the interpretation process. Therefore, additional information is important to support geophysical interpretation. Geological method such as particle size distribution (PSD) analysis (hydrometer analysis and mechanical sieving) was conducted to assist the interpretation. Percentage of clay, silt, and sand can be obtained through the PSD graph and used for soil classification. The value of total dissolved solids (TDS) and salinity of the area are also taken on-site for the saturated area with resistivity value of 20 Ωm at a depth of 2 m. The area has TDS (138-146 mg/L), and salinity (0.007 PSU) values indicating the fresh porefluid characteristics. Resistivity and seismic inversion profile manage to show the underlying subsurface layers. Results from PSD analysis also has supported the interpretation of the geology of the study area where Zone A was identified as silty sand, and Zone B is identified as silt and clay.

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Section: Introductionmentioning

confidence: 99%

Soil Classification From Resistivity and P-Wave Seismic Velocity With Support of Particle Size Distribution (Psd) Analysis

Abdullah¹,

Ismail²,

Roslan³

et al. 2022

Proceedings of the 5th International Conference of Geological Engineering Faculty

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Ketebalan Lapisan Sedimen Molasa Sulawesi Daerah Labokeo, Konawe Selatan Berdasarkan Penampang Electrical Resistivity Tomography

Rubaiyn,

Ngkoimani

2023

OPHIOLITE J. Geol. Terap.

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Desa Labokeo merupakan area yang keseluruhan ditutupi oleh sedimen Molasa Sulawesi. Adanya aktifitas penambangan nikel yang mengindikasikan bahwa terdapat endapan nikel laterit di bawah Molasa Sulawesi di Desa Laboke. Penelitian ini bertujuan untuk mengestimasi ketebalan lapisan sedimen Molasa Sulawesi berdasarkan citra bawah permukaan Electrical Resistivity Tomography (ERT) dekat lokasi penambangan nikel di Desa Labokeo. Metode ERT adalah metode pengukuran resistivitas di permukaan tanah dengan menggunakan banyak elektroda, agar diperoleh variasi distribusi resistivitas bawah permukaan secara lateral dan vertikal, sehingga didapatkan citra bawah permukaan. Akuisisi data ERT menggunakan konfigurasi dipole-dipole. Inversi data ERT menggunakan perangkat lunak Res2Dinv. Berdasarkan penampang inversi ERT diperoleh bahwa nilai resistivitas perlapisan sedimen di lokasi yaitu resistivitas batupasir > 250 Ohm.m dengan ketebalan 5-29 meter, dan resistivitas batulempung-lanau 10,4 – 100 Ohm.m dengan ketebalan hingga 60-90 meter. Batuan ini merupakan batuan sedimen Formasi Langkowala dengan ketebalan hingga 120 meter yang terdiri atas lapisan batupasir yang menindih lapisan batulempung-lanau

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Application of 2-D Resistivity Imaging and Seismic Refraction Method in Identifying the Structural Geological Contact of Sedimentary Lithologies

Cited by 2 publications

References 3 publications

Soil Classification From Resistivity and P-Wave Seismic Velocity With Support of Particle Size Distribution (Psd) Analysis

Soil Classification From Resistivity and P-Wave Seismic Velocity With Support of Particle Size Distribution (Psd) Analysis

Ketebalan Lapisan Sedimen Molasa Sulawesi Daerah Labokeo, Konawe Selatan Berdasarkan Penampang Electrical Resistivity Tomography

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