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UW Scientists Gain Supervolcano Insights from Wyoming Granite
UW Scientists Gain Supervolcano Wyoming Granite
2016/6/12
Geophysical monitoring of the ground above active supervolcanoes shows that it rises and falls as magma moves beneath the surface of the Earth. Silica-rich magmas -- like those in the Yellowstone regi...
Surface weathering of rapakivi granite outcrops–implications for natural stone exploration and quality evaluation
natural stone dimension stone weathering rapakivi granite exploration Finland
2009/10/21
Implications of surface weathering of rapakivi granite outcrops for natural stone evaluation were studied in the Wiborg rapakivi granite batholith in southeastern Finland. The study was performed as f...
Geochemical implication of 87Sr/86Sr ratio of high-temperature deep groundwater in a fractured granite aquifer
87Sr/86Sr ratio fractured granite aquifer thermal water time lag indicator groundwater cycle
2017/8/10
The Dongrae thermal water area located at the southeast margin of the Korean Peninsula is one of the oldest hot springs in Korea and has been used in spas since the 9th Century. In this paper, a geoch...
The Dependence of Localized Crystallization of Halloysite and Kaolinite on Primary Minerals in the Weathering Profile of Granite
Biotite Granite Halloysite Kaolinite Weathering
2011/12/5
Abstract: The formation of kaolin-group minerals in the weathering profile of granite, under the humid, temperate climate as found in Korea, was studied by X-ray diffraction (XRD), scanning electron m...
Nitrogen-isotope record of fluid-rock interactions in the Skiddaw Aureole and granite, English Lake District
Nitrogen-isotope record fluid-rock interactions Skiddaw Aureole granite English Lake District
2012/4/1
The Skiddaw Granite and its contact metamorphic aureole in the English Lake District provide an
excellent opportunity to test the capability of the N-isotope system to trace devolatilization and larg...
Replacement of primary monazite by apatite-allanite-epidote coronas in an amphibolite facies granite gneiss from the eastern Alps
Replacement primary monazite apatite-allanite-epidote coronas eastern Alps
2012/3/31
Accessory monazite crystals in granites are commonly unstable during amphibolite fa-cies regional metamorphism and typically become mantled by newly formed apatite-allan-ite-epidote coronas. This dist...
Dislocation formation and albitization in alkali feldspars from the Shap granite
Dislocation formation albitization alkali feldspars Shap granite
2012/4/5
Orthoclase-richalkalifeldsparsintheLowerDevonianShapgranite,northwestEngland,
containtwogenerationsofalbite-richfeldspar.Thesehavepartiallyreplacedearlierexso-
lutionmicrotexturesconsistingofalbitel...
Beryl stability in local hydrothermal and chemical environments in a mineralized granite
Beryl stability local hydrothermal chemical environments mineralized granite
2012/4/1
The temperature and chemistry of hydrothermal fluids control the breakdown and for-
mation of beryl in rocks of appropriate bulk composition. In rocks of the Triberg granitic
complex in the Schwarzw...
Formation of Trioctahedral Illite from Biotite in a Soil Profile Over Granite Gneiss
Biotite Electron microprobe Illite Mica Scanning electron microscopy Trioctahedral Weathering X-ray powder diffraction
2012/1/4
Clay fractions separated from the A2, B, and C horizons of a soil formed on granite gneiss showed X-ray powder diffraction (XRD) spacings characteristic of trioctahedral illite. The trioctahedral illi...
Scanning Electron Microscope Morphology of Deeply Weathered Granite
Feldspar Gibbsite Granite Halloysite Kaolinite Scanning electron microscopy Weathering
2011/11/22
Abstract: Laterite profiles developed from granite in southwestern Australia were studied by scanning electron microscopy. The morphology of soil materials reflects the mineralogy of secondary mineral...
Biotite Alteration in Deeply Weathered Granite. II. The Oriented Growth of Secondary Minerals
Biotite Electron diffraction Goethite Orientation Vermiculite Weathering products
2012/2/10
Single grain X-ray and electron diffraction patterns of weathered biotite flakes exhibit groupings of 001 and hk reflections of biotite, vermiculite, mixed-layer clay minerals, and kaolinite indicatin...
Biotite Alteration in Deeply Weathered Granite. I. Morphological, Mineralogical, and Chemical Properties
Biotite Goethite Mixed-layer mineral SEM morphology Vermiculite Weathering
2012/2/10
Biotite in deeply weathered granitic rocks in southwestern Australia has altered to exfoliated grains composed of biotite, mixed-layer clay minerals, kaolinite, vermiculite, gibbsite, goethite, and he...