Analisis dan model bawah permukaan dengan menggunakan data anomali gaya berat untuk identifikasi sistem panas bumi lapangan “A” = Analysis and Subsurface Model Using Gravity Anomalies Data to Identify Geothermal System in Field "A"
| Format: | Bachelors |
|---|---|
| Terbitan: |
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia
, 2013
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| Subjects: | |
| Online Access: |
http://lib.ui.ac.id/file?file=digital/20368026-S54088-Ayu Noviyanti.pdf |
Daftar Isi:
- [Area prospek panasbumi Lapangan “A” terletakpadadaerahbagianbarat Indonesia. Secara umum, batuan di daerah panasbumi Lapangan “A” didominasiolehbatuan lava gunungapi (andesitbasalt) danbreksi. Batuantersebutsebagianbesarberumurkuarterhinggatersier.Analisisdan model bawahpermukaan yang dilakukanpadaLapangan “A” menggunakan data anomaligayaberat. Hasil pemodelan gayaberat 2 dimensi yang dikorelasikan dengan data geologi, geokimiadan geofisika (metodemagnetotteluricdanmagnetic) mengidentifikasikan adanya sistem panas bumi dengan zona reservoar pada bagian selatan puncak gunung penelitian dan manifestasimata air panas serta fumarol di permukaannya. Zona reservoar sistem panasbumi Lapangan “A” diperkirakan berasal dari batuan gunung api muda yakni breksi, tufa dan batupasir yang berumur kuarter., Geothermal prospect area in Field "A" is located on the western side of Indonesia. Generally, the rocks in the north and west geothermal field "A" are consists of volcanic rocks such as lava and breccia. Most of them were formed in tertiary and quaternary age. Analysis and subsurface models of Field "A" are based on gravity anomalies data. The result of 2-dimensional gravity modeling correlated with geological, geochemical and geophysical data (magnetic and magnetotelluric method) identified a geothermal system with a reservoir zone in the southern part of the mountain peaks along with the manifestations of hot spring and fumarole on the surface. Geothermal field “A” is estimated to be consists of young volcanic rocks such as breccia, tuff and sandstone from quaternary age.]