نتایج جستجو برای: carbonate rocks

تعداد نتایج: 45550  

Journal: :Bulletin of the Geological Society of Greece 2017

ملک‌زاده شفارودی, آزاده, کریم‌پور, محمد‌حسن, زارعی, آرزو ,

Khanlogh magnetite-apatite deposit is located in northwest of Neyshabour. This area is situated in Binaloud structural zone and east of Tertiary Quchan-Sabzevar magmatic arc. Geology of the area is dacitic volcanic rock intruded by Oligocene subvolcanic rocks with composition of quartz monzodiorite and granodiorite. Miocene sedimentary rocks trusted on them. The magmatism in the area shows char...

2015
Hidekazu Yoshida Atsushi Ujihara Masayo Minami Yoshihiro Asahara Nagayoshi Katsuta Koshi Yamamoto Sin-iti Sirono Ippei Maruyama Shoji Nishimoto Richard Metcalfe

Carbonate concretions occur in sedimentary rocks of widely varying geological ages throughout the world. Many of these concretions are isolated spheres, centered on fossils. The formation of such concretions has been variously explained by diffusion of inorganic carbon and organic matter in buried marine sediments. However, details of the syn-depositional chemical processes by which the isolate...

Journal: :Journal of the American Ceramic Society 1919

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