IDENTIFIKASI LITOLOGI PADA DAERAH PANAS BUMI MENGGUNAKAN METODE RESISTIVITY KONFIGURASI WENNER-SCHLUMBERGER DI DESA GALUNG KABUPATEN BARRU
Abstrak
Sub-surface analysis has been conducted to find out the lithology which includes the structure, the type of rock and the thickness of the geothermal layer of geothermal resources by using the geoelectric configuration method of Wenner-Schlumberger in Kalompie Hamlet, Galung Village, Barru sub-District, Barru District. The working principle of the geoelectric method is performed by injecting an electric current to the ground surface through a pair of current electrodes and measuring the potential difference with another pair of electrodes. The research was conducted in three trajectories with a trajectory length of 105 m and a spacing of 7 m electrodes. The result of the data interpretation was obtained by three materials that is sandy soil with resistivity value 0,095 - 4,05 Ωm have thickness 1 - 12 m, tuffed sandstone with resistivity value 4,05 - 39,7 Ωm having thickness 10 - 14 m, with a resistivity value of 39.7 - 547 Ωm with a thickness of 5 - 15 m, this rock is suspected as a rock cover on Kalompie hot water source area because it has a difficult nature to pass water (impermeabel). The geological structures of fault, anticline and syncline are not found in this research because the measurement path does not cut or pass through the path of geological structure.
Keywords: geoelectric, Wenner-Schlumberger configuration, geothermal
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Referensi
Bakrun, dkk. Penyelidikan Terpadu Daerah Panas Bumi Marana Kabupaten Donggala Sulawesi Tengah. Subdit Panas Bumi. 2016.
Hendrajaya, L. Pengukuran Resistivitas Bumi pada Satu Medium Tak Hingga. Bandung: Laboratorium Fisika Bumi ITB. 1990.
Kasbani. Tipe Sistem Panas Bumi di Indonesia dan Estimasi Potensi Energinya. Pusat Sumber Daya Geologi. 2010.
Loke, M.H. Elekctrical Imaging Surveys for Environmental and Engineering Studies; A Pratical Guide to 2-D and 3-D Surveys, Penang, Malaysia. 2000.
Loke, M. H. Tutorial: 2-D and 3-D Electrical Imaging Surveys. Penang, Malaysia. 2004.
Noor, Djauhari. Pengantar Geologi. Bogor: Graha Ilmu. 2009.
Priambodo, Imam Catur, dkk. Áplikasi Metoda Geolistrik Konfigurasi Wenner -SchlumbergerPada Survey Gerakan Tanah di Bajawa, NTT. Buletin Vulkanologi dan Bencana Geologi. Volume 6 Nomor 2-Agustus 2011:3.
Rezky, dkk. Penyelidikan Geologi Daerah Panas Bumi Suwawa Kabupaten Bone Bolango Gorontalo. Subdit Panas Bumi. 2016.
Sukamo. Peta Geologi Lembar Pangkajene dan Watampone Bagian Barat Sulawesi. Bandung: Pusat Penelitian dan Pengembangan Geologi. 1982.
Suryo, dkk. Pengaruh Kepadatan dan Kadar Air Tanah Pasir Terhadap Nilai Resistivitas pada Model Fisik dengan Metode Geolistrik. Teknik sipil. Universitas Brawijaya. 2016.
Telford, W. M., L. P. Geldart, R. E Sheriff & D. A. Keys. Applied Geophysic. London: Cambridge University Press. 1990.
Triahandin, Agnis dan Agus Setyawan. Identifikasi Struktur Bawah Permukaan Area Manifestasi Panas Bumi Air Panas Paguyangan Brebes Menggunakan Metode Geolistrik Dengan Konfigurasi Schlumberger. Semarang: Universitas Diponegoro. 2014.
Wahid, A. Muh. Fais. Eksplorasi Mataair Panas dengan Metode Geokimia dan Geolistrik Resistivitas Daerah Kabupaten Pinrang. Skripsi. Makassar: Universitas Hasanuddin. 2017.
Wahyuningsih, Rina. Potensi dan Wilayah Kerja Pertambangan Panas Bumi di Indonesia. Subdit Panas Bumi. 2005.
Wildan, Dadan. Syafrima, Wahyu. Studi Awal Karakteristik Pola Resistivitas Sistem Panas Bumi Temperatur Rendah-Menengah di Indonesia. Jakarta: Universitas Negeri Jakarta. 2015.
