Rasimeng, Syamsurijal and Wawan G.A. Kadir, WGA Kadir and Grandis, Hendra (2013) INTERPRETATION OF CURIE POINT DEPTH AND THERMAL GRADIENT BASED ON MAGNETIC ANOMALY DATA AT SOUTHERN SUMATRA GEOTHERMAL AREA. In: Seminar Nasional Kebumian-VII UPN Yogyakarta, 5 September 2013, Yogyakarta.
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Abstract
Curie point depth (CPD) is Curie temperature depth where magnetic mineral lost its magneticity. Curie temperature generally higher on mafic frozen rock than on any other rock. because of its higher titano-magnetic content. The magnetic field induction value depends on rock minerals, so it can be used to determine the depth of the rock. Magnetic field anomaly are series of signals magnitude as the responds of rock composing material under the surface. Power spectrum application for that signals magnitude can be used to determine lower surface rock mass depth including CPD and thermal gradient. Tectonic activity along Sumatra Fault System (SFS) allow the emergence of CPD depth variation and thermal gradient. Southern Sumatera as part of this system become the focus of this research, because it has geothermal potential indicated by numbers of fluid manifest distribution on the surface. Result of thermal gradient analysis obtained from CPD variation informed that value of thermal gradient was 40-750C/km on shallow CPD area (8-15 km). That area divided Sumatera island and extended to North West – South East direction. Geologically, southern Sumatera also part of magmatic arc area as the SFS product, so it is possibly become geothermal prospect area.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Fakultas Teknik (FT) > Prodi Teknik Geofisika |
| Depositing User: | SYAMSURIJAL RASIMENG |
| Date Deposited: | 09 Jun 2021 14:35 |
| Last Modified: | 09 Jun 2021 14:35 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/32444 |
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