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SEDIMENTOLOGY AND MINERALOGY OF LATE MIOCENE PALEOSOLS AND CALCRETE RICH SEDIMENTS IN THE WESTERN PART OF CENTRAL ANOTOLIAN VOLCANIC PROVINCE (CAVP), TURKEY
Central Anotolian Volcanic Province (CAVP) Clay Minerals Late Miocene Weathering Paleosol-Calcrete
2011/11/8
The Dogantarla-Aksaray area is situated in western part of the CAVP. This province contains nine (9) different ignimbrite levels, for which a Late Miocene age is indicated by vertebrates as well as K/...
CHARACTERISTICS OF A Mg-PALYGORSKITE IN MIOCENE ROCKS,MADRID BASIN (SPAIN)
Esquivias FTIR Spectroscopy Mg-palygorskite Octahedral Occupancy Palygorskite
2011/11/7
Palygorskite in Miocene mudstones, palustrine limestones and calcretes from the Esquivias locality (Madrid Basin, Spain) has been analyzed by X-ray diffraction, infrared spectroscopy, scanning electro...
Palygorskite in Miocene rocks of northern Iraq:environmental and geochemical indicators
Palygorskite Authigenesis Miocene Iraq
2011/11/4
the mineralogical characteristics of palygorskite from the Lower Miocene Euphrates Formation and the Middle Miocene Fat’ha (Lower Fars) succession in north and northwestern Iraq were studied by X-ray ...
The Origin of Clay Minerals in Salina Playa-Mudflat Facies,Yenicubuk Formation (Lower-Middle Miocene), Gemerek, Sivas, Turkiye
Playa-Mudflat Facies Clay Minerals palygorskite
2011/11/8
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...
Paleoenvironmental Indicators of Clay Minerals in Miocene Sediments, Northern Iraq
Clay Mineralogys Miocene Sediments Palygorskite Kaolinite
2011/11/7
Clay mineralogy of the Miocene successions taken from northern Iraq constitute an important paleoenvironmental indication for the evolution of these sediments. Palygorskite is a common mineral especia...
Diagenesis of Dioctahedral and Trioctahedral Smectites from Alternating Beds in Miocene to Pleistocene Rocks of the Niigata Basin, Japan
Chlorite-Smectite Clay Mineral Diagenesis C-S Geothermometer Illite-Smectite I-S Niigata Basin Saponite
2011/12/5
Abstract: Clay mineral diagenesis in the Niigata basin is documented by mineralogical and chemical analysis of clay minerals from cuttings from the Shinkumoide SK-1D (SSK-1D) well which is characteriz...
Stable Isotope Evolution of Volcanic Ash Layers during Diagenesis of the Miocene Monterey Formation, California
Bentonite Diagenesis Monterey Formation Stable Isotopes Volcanic Ash
2011/12/2
Abstract: The oxygen and hydrogen isotope compositions of volcanic ash layers from coastal outcrops of the Miocene Monterey Formation elucidate the progressive burial diagenesis of glass to bentonite ...
Kaolin Mineralogy of Clays in Paleosol Profiles on the Late-Miocene Sediments in Penghu Islands (Pescadores), Taiwan
7A-Halloysite Kaolinite Late Miocene Laterization Paleosol
2011/12/2
Abstract: Clay mineral compositions from 2 paleosol profiles (Chu-Wan, CW, and Shiao-Men Yu, SMY, profiles) on the late-Miocene sediments in Penghu Islands (Pescadores), Taiwan, are characterized by r...
Diagenetic Transformation of Magnesite Pebbles and Cobbles to Sepiolite (Meerschaum) in the Miocene Eskisehir Lacustrine Basin, Turkey
Diagenesis Magnesite Replacement Sepiolite Turkey
2011/12/8
Abstract: Magnesite pebbles in Miocene lacustrine conglomerates in northwest Turkey have been partially to totally replaced by sepiolite. Only 5% of the magnesite pebbles have been converted to essent...
Geochemistry and Paragenesis of Heulandite Cements in a Miocene Marine Fan-Delta System of the Pohang Basin, Republic of Korea
Burial Fan-delta Heulandite Cement Heulandite-Clinoptilolite Meteoric Water Sr Isotope Uplift Volcaniclastic
2011/12/8
Abstract: In the Pohang area of Korea, heulandite occurs as cements in conglomerate and sandstone of a Miocene marine fan-delta system resting on Eocene dacitic volcanics. Three types of heulandite ce...
Characterization and Origin of 1:1 Phyllosilicates within Peloids of the Recent, Holocene and Miocene Deposits of the Congo Basin
1:1 phyllosilicate Chemical composition Nontronite Peloids X-ray diffraction
2011/12/27
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),...
Pedogenic and groundwater processes in a closed Miocene basin(northern Spain)
Pedogenic Miocene basin Sepfilveda-Ayll6n Basin
2011/11/7
The Sepfilveda-Ayll6n Basin (SAB) was an episodically closed Miocene basin adjacent to the Tertiary Duero Basin (northern Spain). The sediments studied here represent a depositional system developed f...
A Chemical, XRD, and 27Al MAS NMR Investigation of Miocene Gulf Coast Shales with Application to Understanding Illite/Smectite Crystal-Chemistry
Burial diagenesis Gulf Coast Illite/smectite Miocene NMR
2011/12/30
This study assesses the distribution of Al and Fe in mixed-layer illite/smectites (I/S) in shales undergoing burial diagenetic changes, using evidence from 27Al NMR, XRD, and chemical analyses. Sample...
Considerations and Applications of the Illite/Smectite Geothermometer in Hydrocarbon-Bearing Rocks of Miocene to Mississippian Age
Geothermometer Hydrocarbons Illite/smectite Illitization Smectite diagenesis Thermal maturity
2011/12/29
Empirical relationships between clay mineral transformations and temperature provide a basis for the use of clay minerals as geothermometers. Clay-mineral geothermometry has been applied mainly to dia...
K-Rich Mordenite from Late Miocene Rhyolitic Tuffs, Island of Samos, Greece
Hydrothermal alteration Mordenite Potassium Rhyolitic tuff Volcanic ash X-ray powder diffraction Zeolite
2011/12/31
Mordenite occurs in hydrothermally altered rhyolitic volcanic rocks at the margin of a Late Miocene lake basin on the island of Samos, Greece. The mordenite was identified by its X-ray powder diffract...