STUDI GEOLOGI DAN ALTERASI HIDROTHERMAL

STUDI GEOLOGI DAN ALTERASI HIDROTHERMAL DAERAH
PAMANDATI KECAMATAN LAINEA KABUPATEN KONAWE SELATAN
LD. Hasan Proboyen
(Teknik Geologi, Fakultas Ilmu Teknologi dan Kebumian,
Universitas Halu Oleo)
Email: [email protected]
ABSTRAK
Telah dilakukan penelitian studi geologi dan alterasi hirothermal Daerah
Pamandati Kecamatan Lainea Kabupaten Konawe Selatan. Secara geografis lokasi
penelitian terletak pada zona 51 UTM (Universal Transverse Mercator) dengan posisi
koordinat 453500 mT – 457500 mT dan 9515000 mS – 9518000 mS. Penelitian ini
mengidentifikasi kondisi geologi berupa aspek geomorfologi, litologi serta struktur
geologi dan menentukan tipe alterasi yang terdapat pada daerah Pamandati. Metode
yang digunakan dalam penelitian ini terdiri atas penelitian lapangan dan penelitian
laboratorium. Penelitian lapangan terdiri dari observasi lapangan dan pemetaan
geologi. Penelian laboratorium terdiri dari pengamatan petrografis dengan
menggunakan mikroskop polarisasi. Secara geomorfologi daerah penelitian terdiri
atas dua satuan geomorfik yaitu satuan geomorfik bentukan asal struktural dan satuan
geomorfik bentukan asal fluvial. Litologi daerah penelitian tersusun atas enam satuan
batuan yaitu satuan batupasir, satuan batupasir malih, satuan batusabak, satuan
kuarsit, satuan filit dan satuan aluvium. Struktur geologi yang ditemukan pada daerah
penelitian berupa sesar dan kekar. Berdasarkan mineral ubahan zona alterasi yang
terdapat pada daerah penelitian dikelompokkan atas zona zona alterasi argilik dan
potasik.
Kata Kunci : Geologi, Geomorfologi, Struktur, Stratigrafi, zona alterasi.
GEOLOGICAL STUDIES AND HYDROTHERMAL ALTERATION
PAMANDATI SUBDISTRICT LAINEA DISTRICT OF SOUTH KONAWE
LD. Hasan Proboyen
(Geological Engineering, Faculty of Sciences and Technology,
Halu Oleo University)
Email: [email protected]
ABSTRACT
A research on geological study and hydrothermal alteration Pamandati area
of Lainea Subdistrict, South Konawe District, had been carried out. Research area
geographically was located at zone 51 UTM (Universal Transverse Mercator) with
coordinates of located at coordinates 453500 mE – 457500 mE and 9515000 mS –
9518000 mS. This study aims to identify the geological condition which involves
geomorphology, lithology, geological structure. Alteration types existing in the
research area would also be determined. The method used in this study consisted of
field study and laboratory analysis. The field study was classified into field
observation and geological mapping. The laboratory analysis was conducted through
petrographic observation by using polarization microscope. Geomorphologically the
study area was classified into two units, namely geomorphic unit of structural
original and fluvial original. The lithology of the study area consisted of six rock
units, namely sandstones, meta-sandstone, slate, quartzite, phylite and alluvium. The
geological structure identified in the study area were fault and joint structure.
According to alteration mineral, the alteration zone of the reseach area was
classified into argilic and potasic alteration zone.
Keywords: Geology, Geomorphology, Structure, Stratigraphy, Alteration Zones