Studi Petrografi Batuan Beku dan Sinter Silika di Kecamatan Alam Pauh Duo, Kabupaten Solok Selatan

Authors

  • Sauri Aulia Putri Laboratorium Fisika Bumi, Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas
  • Ardian Putra Laboratorium Fisika Bumi, Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas
  • Mirzam Abdurrachman Laboratorium Petrologi, Jurusan Teknik Geologi Fakultas Ilmu dan Teknologi Kebumian, Institut Teknologi Bandung

DOI:

https://doi.org/10.25077/jfu.7.4.320-327.2018

Abstract

Telah dilakukan analisis petrografi terhadap batuan beku dan sinter silika di Kecamatan Alam Pauh Duo, Kabupaten Solok Selatan. Penelitian ini bertujuan untuk mengetahui kenampakan mikroskopik batuan meliputi struktur dan tekstur, komposisi mineral penyusun batuan, jenis, dan nama batuan.  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 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. 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

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Published

2018-10-01

How to Cite

Putri, S. A., Putra, A., & Abdurrachman, M. (2018). Studi Petrografi Batuan Beku dan Sinter Silika di Kecamatan Alam Pauh Duo, Kabupaten Solok Selatan. Jurnal Fisika Unand, 7(4), 320–327. https://doi.org/10.25077/jfu.7.4.320-327.2018

Issue

Vol. 7 No. 4 (2018)

Section

Articles

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Copyright (c) 2018 Sauri Aulia Putri, Ardian Putra, Mirzam Abdurrachman

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