نتایج جستجو برای: batholith

تعداد نتایج: 422  

Journal: :International Journal of Earth Sciences 2021

Abstract The late-tectonic 511.4 ± 0.6 Ma-old Nomatsaus intrusion (Donkerhoek batholith, Damara orogen, Namibia) consists of moderately peraluminous, magnesian, calc-alkalic to calcic granites similar I-type worldwide. Major and trace-element variations LREE HREE concentrations in evolved rocks imply that the fractionated mineral assemblage includes biotite, Fe–Ti oxides, zircon, plagioclase mo...

Journal: :Geology 2022

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...

Journal: :International Geology Review 2023

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...

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