Magnetic and Petrographic Analysis of Andesite Rock Bodies, Khairmalia, South of Chittourgarh, Rajasthan
نویسندگان
چکیده
Thirty oriented fresh block samples were collected from ten suitable sites of the outcropping andesite rock formation to study their Petrographical characteristics and Magnetic properties. The analysis of these rocks around Khairmalia shows that the magnetite crystals are fresh and are in perfect shape. These crystals are present in sufficient quantity i.e. measured as 10 to 20% in various rocks in the area. The measured values of the natural remanant magnetization (NRM), magnetic susceptibility (MS) and Koenigsberger (Qn) Ratio shows typical variations in their values. Their limits states that the beginning of the Vindhyan Supergroup crustal formation during Palaeoproterozic Period was of oscillating and disturbed type.
منابع مشابه
کانیسازی منگنز استاج، نمونهای از کانهزایی نوع آتشفشانی – رسوبی در جنوب غرب سبزوار
Estaj manganese deposit is located close to the Estaj village, 40 km southwest of Sabzevar, in Central Iran and Sabzevar subzone. Based on field evidences and microscopic studies, the rock units of the study area are pyroxene hornblende tracy Andesite, crystalin andesitic tuff, pyroxen hornblende andesite, pyroxen andesite- basalt, chert and limstone. These rock units belong to Late Cretaceous ...
متن کاملMagnetic rocks distribution and depth to basement analysis on an old Quarry Site, Abeokuta, SW Nigeria
Geomagnetic study was carried out to investigate the distribution and depth of formations of different magnetic rocks on an old quarry site, Abeokuta, Southwestern, Nigeria. Eight ground magnetic profiles were established with 10 m spacing intervals orientated in West-East and North-South directions, and ranged between 110 and 190 m. A total of 223 data sets were acquired and corrected for all ...
متن کاملChemistry of mafic minerals and thermobarometry of Bazman Quaternary volcanic rocks
Abstract 1-Introduction Bazman volcano is located on Chgay - Makran magmatic arc. This magmatic arc with east-west trend is 500 km long and 150 km wide and extends from southeastern Iran to southwestern Pakistan. Early evolution of the Makran zone from the upper Oligocene to the upper Miocene is characterized by turbidite sediments deposited on the oceanic crust. There are several quaternary...
متن کاملA Modified Schimazek’s F-abrasiveness Factor for Evaluating Abrasiveness of Andesite Rocks in Rock Sawing Process
One of the most crucial factors involved in the optimum design and cost estimation of rock sawing process is the rock abrasivity that could result in a significant cost increase. Various methods including direct and indirect tests have been introduced in order to measure rock abrasivity. The Schimazek’s F-abrasiveness factor ( ) is one of the most common indices to assess rock abrasivity. is t...
متن کاملSource of Cement in the Great Oolite Reservoir, Storrington Oil Field, Weald Basin, South of England
The source of cement in oilfields is critical to the prediction of the distribution of cements in the reservoirs and also prediction of reservoir quality. The source of mineral forming cements has been determined for the Storrington oolitic carbonate reservoir (Middle Jurassic Great Oolite Formation, Weald Basin, onshore UK) using a combination of petrography, electron microscopy, fluid inclusi...
متن کامل