نتایج جستجو برای: granitoid

تعداد نتایج: 560  

Journal: :Bulletin of the Geological Society of Finland 1982

Journal: :Geosciences 2021

In this study, twenty five partially vitrified rocks and four samples of collected on the top hill called Serravuda (Acri, Calabria, Italy) are analyzed. The goal is to shed light origin these enigmatic materials. analyzed a breccia cemented rock fragments (gneiss, granitoid, amphibolite fragments) which extends for more than 10 m, forming continuous mass along northern north-west border flat h...

2004
T. Mark Harrison An Yin Marty Grove Oscar M. Lovera F. J. Ryerson Xinhua Zhou

Determining the timing, magnitude, and location of deformation due to the Indo-Asian collision is widely acknowledged as an important step in understanding how the lithosphere responds during continental collision. A puzzling result of geological investigations of the Lhasa Block over the past 2 decades has been the apparent lack of significant Tertiary deformation there. Perhaps the most impor...

Journal: :زمین شناسی اقتصادی 0
عباس گل محمدی محمد حسن کریم پور آزاده ملکزاده شفارودی سید احمد مظاهری

sangan magnetite skarn mine is located 300 km southeast of mashhad, along the eastern part of khaf-drouneh volcanic-plutonic belt. granitoids from three areas within the sangan mine a, c-north and dardvay were studied. within the study area, three intrusive rocks including biotite-hornblende monzonite porphyry, biotite syenite and syenogranite were recognized. based on field cross cutting, abse...

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