STUDI PETROGRAFI BATUAN BEKU DAN SINTER SILIKA DI KECAMATAN ALAM PAUH DUO, KABUPATEN SOLOK SELATAN

SAURI, AULIA PUTRI (2018) STUDI PETROGRAFI BATUAN BEKU DAN SINTER SILIKA DI KECAMATAN ALAM PAUH DUO, KABUPATEN SOLOK SELATAN. Diploma thesis, Universitas Andalas.

Preview	Text (COVER DAN ABSTRAK) cover + abstrak.pdf - Published Version Download (142kB) | Preview
Preview	Text (BAB 1) BAB 1.pdf - Published Version Download (51kB) | Preview
Preview	Text (BAB 5) BAB 5.pdf - Published Version Download (43kB) | Preview
Preview	Text (DAFTAR PUSTAKA) DAFTAR PUSTAKA.pdf - Published Version Download (126kB) | Preview
	Text (SKRIPSI FULL TEXT) TUGAS AKHIR FULL TEXT.pdf - Published Version Restricted to Repository staff only Download (3MB)

Abstract

ABSTRAK Telah dilakukan analisis petrografi terhadap batuan dan sinter silika di Kecamatan Alam Pauh Duo, Kabupaten Solok Selatan. Batuan diambil pada empat titik di Kecamatan Alam Pauh Duo, sedangkan sinter silika diambil di sekitar mata air panas Sapan Maluluang. Batuan dan sinter silika dipreparasi menjadi sayatan tipis. Analisis petrografi bertujuan untuk mengetahui struktur, tekstur, dan mineral penyusun batuan. Analisis dilakukan menggunakan mikroskop polarisasi dan X-Ray Diffractometer (XRD). Hasil analisis menunjukkan bahwa batuan pada Kecamatan Alam Pauh Duo didominasi oleh batuan beku basalt. Batuan ini menunjukkan struktur masa batuan yang seragam (massif). Batuan beku basalt ini disusun oleh mineral primer dan sekunder. Mineral primer berupa plagioklas, piroksen, dan hornblen. Mineral sekunder berupa klorit, kalsit, dan kuarsa. Mineral sekunder ini mengindikasikan bahwa temperatur reservoir panas bumi di Kecamatan Alam Pauh Duo berkisar antara 120ºC-320ºC. Nilai estimasi ini berada dalam kisaran nilai estimasi temperatur reservoir yang diperoleh oleh PT. Supreme Energy yaitu 210ºC - 320ºC. Kata Kunci: batuan beku basalt, petrografi, temperatur reservoir ABSTRACT Petrography’s observation to thin section of rock and silica sinter has been done at Kecamatan Alam Pauh Duo, Kabupaten Solok Selatan. The rock was taken at four points in Kecamatan Alam Pauh Duo, and silica sinter was taken around Sapan Maluluang’s hot spring. The rock and silica sinter was prepared to be thin section. Petrography analysis was used for identifying the structure, texture, and mineral content of rock .The observation was done by using polarization microscope and X-Ray Diffractometer (XRD). The result shows that the rock at Kecamatan Alam Pauh Duo is dominated by basalt rock. This rock shows the uniform structure of rock mass. This rock was arranged by primary and secondary mineral. Primary mineral are plagioclase, pyroxene, and homblend. Secondary mineral are chlorite, calcite, and quartz. The secondary mineral indicates that temperature of geothermal reservoir at Kecamatan Alam Pauh Duo is ranges from 120ºC to 320ºC. This temperature is in the range of PT. Supreme Energy’s estimated value. Keywords : basalt rock, petrography, reservoir temperature

Actions (login required)

View Item