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Preliminary X-ray, SEM, TEM, and optical mineralogical results are reported to discuss the paragenesis, age distribution,and origin of clay minerals, silica modifications and authigenic silicates foun...
期刊信息 篇名 The Kumdy-Kol diamond deposit (North Kazakstan): the geology and the origin of the metamorphic diamond. 哈萨克斯坦北部Kumdy-kol金刚石矿床与变质金刚石成因。 语种 中文 撰写或编译 撰写 作者 Nitsenko P,Ussoltsev I.I 第一作者单位 哈萨克斯坦地球...
The playa-mudflat facies under investigation are found in the Gemerek Basin (Sivas, T黵kiye). This Miocene basin is bordered by the Akdag Metamorphics (Paleozoic) to the N-NW, the Elmal齞ag Volcanic Roc...
The Palaeogene lacustrine chalky carbonates of the Madrid Basin are a peculiar type of very soft and friable carbonate facies with high porosity despite being covered by more than 800 m of sediment. S...
Abstract: Neogene sediments having both fluvial and lacustrine characteristics are widespread in the Konya region of central Anatolia. The fluvial units are typically green in colour and thick at the ...
Abstract: Muscovite-kaolinite intergrowths found in Albian sandstones of the Basque Cantabrian basin (northern Spain) were studied by optical, scanning and electron microscopy and electron microprobe ...
Abstract: The clay particles in a kaolin deposit from Brazil were investigated by X-ray diffraction (XRD), differential thermal analysis (DTA), analytical transmission electron microscopy (ATEM), and ...
Abstract: Lechuguilla Cave is a hypogene cave formed by oxidation of ascending hydrogen sulfide from the Delaware Basin. A unique sediment deposit with characteristics suggesting derivation from the l...
The controversies surrounding granites never seem to die. Two hundred years ago a debate raged over whether granites are sedimentary or igneous. With James Hutton effectively putting that one to re...
Abstract: The residual kaolin deposits near Lastarria, South-Central Chile, were formed by weathering of subvolcanic quartz porphyry stocks, which intruded the metamorphic basement of the Coastal Cord...
Abstract: Smectite and fine-grained quartz were separated from 6 volcanic ash samples collected in Japan from Shinmoe-dake Volcano, southern Kyushu, and Mt. Usu Volcano, southern Hokkaido. Oxygen isot...
Complexintracrystallinezoningpatternsinhydrothermalgarnetandvesuvianiteand magmaticplagioclasewereanalyzedbystatisticalmethodstotestforfractalbehavior.The zoningdatawerecollectedbyelectronandprotonm...
Abstract: Along the inner Coastal Plain, kaolinite-metahalloysite-rich, neritic muds of Cretaceous-Eocene age have undergone intense postdepositional alteration in the recharge area of the regional gr...
The grey-green peloids from the Miocene period to Recent fine-grained deposits on the continental shelf close to Congo-Zaîire River mouth were studied by X-ray transmission diffractometry (XRD),...
Abstract: Hydrogen- (δD = −106 to −97‰) and oxygen-(δ18O = +14.0 to +16.6‰) isotope compositions of kaolinite from late Cretaceous and Oligocene deposits at Iwaizumi, northeastern Japan, i...

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