PEMODELAN INVERSI 2-D DAN 3-D MENGGUNAKAN DATA MAGNETOTELURIK DAERAH PANAS BUMI MASSEPE KABUPATEN SIDENRENG RAPPANG, PROVINSI SULAWESI SELATAN
Abstract
Pemodelan inversi 2-D dan 3-D data magnetotelurik (MT) dari daerah panas bumi Massepe memberikan hasil delineasi area prospek yang lebih jelas yaitu di sekitar mata air panas Pajalele seluas ± 8 km2. Zona upflow sistem panas bumi Massepe ini diperlihatkan oleh adanya anomali tahanan jenis rendah < 20 Ohm-m di kedalaman 250 m yang semakin tinggi mulai kedalaman 700 m s.d. 800 m. Zona transisi nilai tahanan jenis ini diduga sebagai kedalaman puncak reservoir sistem panas bumi Massepe yaitu di kedalaman 800 m. Anomali tahanan jenis data magnetotelurik juga menunjukkan pola yang sesuai dengan keberadaan struktur geologi di daerah ini terutama struktur Sesar Massepe berarah relatif utara-selatan yang mengontrol kemunculan mata air panas di Pajalele dan Alakuang.
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