نتایج جستجو برای: mazraeh batholith
تعداد نتایج: 434 فیلتر نتایج به سال:
Abstract Comprehensive zircon thermometry that takes into account saturation temperatures, Ti-in-zircon measurements, and morphologies microstructures can provide key information on the thermal evolution of a granite batholith. The Variscan South Bohemian batholith (Germany, Austria, Czech Republic) comprises series granitoid units intruded between ca. 330 300 Ma. We categorize granitic rocks a...
The Los Cabos Block, at the southern end of Baja California, exposes part Late Cretaceous Peninsular Ranges Batholith over 2700 km2. In block, Batholitic Complex is exposed in two massifs, Sierra La Laguna to west and Trinidad east. sierras are separated by ~75 km long, N-S striking, San José del Cabo extensional fault system, homonymous basin. Here, we present field observations, new U–Pb Ar–A...
The conglomerates of Sangestan Formation (Lower Cretaceous) have been metamorphosed in the vicinity of the leucogranitoid rocks of the Shir-Kuh batholith and have created the mineral assemblage of garnetepidote- quartz-calcite-pyrite in the contact halo. Following the contact metamorphism, hydrothermal alteration (pyrite formation and silicification) has likely occurred. Based on the trace...
Exposures of arc crustal sections represent rare opportunities to directly evaluate lower magmatic processes and their link products in the middle upper crust. Within southernmost Sierra Nevada batholith, Bear Valley Intrusive Suite (BVIS) exposes a contemporaneously constructed ~ 30 km thick intrusive suite, thus is ideal for this type examination. Here we present detailed petrography mineral ...
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