Abstract
The potential of limestone in Gorontalo City is not only the use of industrial minerals but also its availability as a reservoir of groundwater reservoirs. The availability of groundwater is the main focus in preserving the environment. For this reason, this research focuses on the quality of limestone reservoirs by analyzing limestone porosity. The purpose of this study was to determine the average porosity percentage, porosity type and porosity quality both semi-quantitative and qualitative. In order to achieve these objectives, two methods are used namely the field survey method and petrographic analysis. The results showed the average percentage of porosity quality of limestone as a reservoir of groundwater in the excellent category with the type of porosity is fracturing and growing (vugular).
Highlights
The potential of limestone in Gorontalo City is the use of industrial minerals and its availability as a reservoir of groundwater reservoirs
The results showed the average percentage of porosity quality of limestone as a reservoir of groundwater in the excellent category with the type of porosity is fracturing and growing (vugular)
A Color Guide to the Petrography of Carbonate Rocks: Grains, textures, porosity, diagenesis
Summary
Material penelitian adalah batugamping yang ada di Kecamatan Kota Barat Kota Gorontalo. Lokasi penelitian berupa dataran tinggi (perbukitan) pada koordinat (0° 32’ 28,88”LU dan 123° 2’ 7,56” BT) (Gambar 1). Metode penelitian yang dilakukan ada dua metode yaitu metode survei lapangan dan metode analisis laboratorium. Untuk survei lapangan memfokuskan deskripsi dan interprestasi jenis-jenis batugamping serta sampling yang layak dianalisis di laboratorium. Analisis di dalam laboratorium berupa analisis Petrografi di laboratorium Geo Optik. Tahapan analisis petrografi diawali pembuatan sayatan tipis (thin section) dengan metode blocking berfungsi mengimpregnasi larutan biru (blue dye) ke dalam pori untuk membedakan pori asli batuan dengan pori selama preparasi (Dickson, 1966; Crabtree et al, 1984). Lokasi penelitian di Kecamatan Kota Barat Gorontalo Sumber: Google Earth tahun 2019
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