نتایج جستجو برای: skarn

تعداد نتایج: 376  

Journal: :International Journal of Rock Mechanics and Mining Sciences 2022

Multistage constant-amplitude-cyclic (MCAC) loading experiments were conducted on Tibet interbedded skarn to investigate and characterize fatigue mechanical behavior of the tested rock. Rock volumetric deformation, stiffness change, damage evolution analyzed along with macroscopic failure morphology. The experimental results demonstrated that deformation was influenced by interbed structure. pr...

حاج علیلو, بهزاد, رضوی‌زاده, نوراله, مؤید, محسن , وثوق, بهرام ,

The widespread stratigraphic sequences, from Precambrian to Cenozoic have been affected by metasomatic and thermal- metamorphic events of the Pliocene age by the Alam- Kuh alkali-granitic intrusion. Skarnification is the main metasomatic type in the studied area with 1-2km in extent. This intruded alkali-granite is probably related to syn-collision and post collision tectonic regimes as A-type ...

Journal: :Entropy 2011
Valeria C. F. Barbosa João B. C. Silva Suzan S. Vasconcelos Francisco S. Oliveira

The gravity and magnetic data measured on the Earth’s surface or above it (collected from an aircraft flying at low altitude) can be used to assist in geologic mapping by estimating the spatial density and magnetization distributions, respectively, presumably confined to the interior of a horizontal slab with known depths to the top and bottom. To estimate density or magnetization distributions...

2017
Jianping Liu Raymond M. Coveney

Indium (In) is commonly hosted in Sn-rich deposits but rarely reported in Sn-poor deposits. However, an In-rich and Sn-poor skarn deposit, the Qibaoshan Cu-Zn-Pb deposit, has been identified in south China. Geochemical analyses were undertaken on 23 samples representing the following mineral assemblages: sphalerite-pyrite, pyrite-chalcopyrite, pyrite-sphalerite-galena-chalcopyrite, pyrite, magn...

Journal: :Minerals 2021

Taking advantage of a multi-sensor (multispectral and magnetic) drone survey, we address the detailed geological mapping modeling mineralization in its environment. We stress that these high-resolution data allow us to bridge gap between field observations regional aeromagnetic survey. On one hand, combination multispectral imagery with enhances mapping. other magnetic susceptibility measuremen...

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