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MINERALOGY AND ORIGIN OF CLAY MINERALS, SILICA AND AUTHIGENIC SILICATES IN LEG 14 SEDIMENTS
CLAY MINERALS AUTHIGENIC SILICATES MINERALOGY
2011/11/11
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...
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...
Lacustrine chalky carbonates: origin, physical properties and diagenesis (Palaeogene of the Madrid Basin, Spain)
Chalky carbonates Lacustrine deposits Physical properties Overpressure Palygorskite Palaeogene
2011/11/8
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...
Distribution and Origin of Clay Minerals in Konya Neogene Sedimentary Basin, Central Anatolia, Turkey
clay minerals Konya lacustrine environment Neogene Turkey
2011/11/10
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 ...
Microtextures and the Origin of Muscovite-Kaolinite Intergrowths in Sandstones of the Utrillas Formation, Basque Cantabrian Basin, Spain
Epitactic Geomechanical Parameters HRTEM Muscovite-kaolinite Intergrowth SEM Timing
2011/12/5
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 ...
The Relationships Between Kaolinite Crystal Properties and the Origin of Materials for a Brazilian Kaolin Deposit
ATEM Defect EPR Formation Condition Kaolinite Morphology Saprolite Soil XRD
2011/12/2
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 ...
Detrital Origin of a Sedimentary Fill, Lechuguilla Cave, Guadalupe Mountains, New Mexico
Caves Cave Sediments Lechuguilla Cave
2011/12/6
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...
Third Hutton Symposium: The Origin of Granites and Related Rocks. Edited by M. Brown, P.A. Candela, D.L. Peck, W.E. Stephens, R.J. Walker, and E. Zen. Geological Society of America Special Paper 315, 1996
Origin of Granites Related Rocks Geological Society America Special Paper
2012/3/31
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...
Supergene Origin of the Lastarria Kaolin Deposit, South-Central Chile, and Paleoclimatic Implications
Chemistry DTA Fluid Inclusions Gibbsite Hydrogen Isotopes Hydrothermal Illite Kaolinite Origin of Kaolin Oxygen Isotopes Weathering
2011/12/7
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...
Hydrothermal Origin of Smectite in Volcanic Ash
Hydrothermal Alteration Oxygen Isotope Composition Smectite Volcanic Ash
2011/12/8
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...
Statistical characteristics and origin of oscillatory zoning in crystals
Statistical characteristics origin oscillatory zoning crystals
2012/4/5
Complexintracrystallinezoningpatternsinhydrothermalgarnetandvesuvianiteand
magmaticplagioclasewereanalyzedbystatisticalmethodstotestforfractalbehavior.The
zoningdatawerecollectedbyelectronandprotonm...
Origin and Classification of Coastal Plain Kaolins, Southeastern USA, and the Role of Groundwater and Microbial Action
Bauxite Origin Kaolin Classification Kaolin Origin Microbial Weathering Weathering
2011/12/9
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...
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),...
Origin of Cretaceous and Oligocene Kaolinites from the Iwaizumi Clay Deposit, Iwate, Northeastern Japan
Climate Cretaceous Hydrogen-isotopes Iwate Japan Kaolinite Oligocene Oxygen-isotopes
2011/12/27
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...
The origin and diagenesis of grain-coating serpentine-chlorite in Tuscaloosa Formation sandstone, U.S. Gulf Coast
origin diagenesis grain-coating serpentine-chlorite Tuscaloosa Formation sandstone
2012/4/5
Randomly interstratified serpentine-chlorite (Sp-Ch) is ubiquitous in sandstones ofthe subsurface Tuscaloosa Formation. TheSp-Choccursasgraincoatings, porefillings, pel-oids,andinfillings.Thepresenceo...