搜索结果: 46-60 共查到“地质学 mineralogy”相关记录77条 . 查询时间(0.065 秒)
X-RAY MINERALOGY AND GEOCHEMICAL STUDIES OF SEDIMENTS, LEG 125 SITES 781 THROUGH 784 AND 786
X-RAY MINERALOGY GEOCHEMICAL STUDIES OF SEDIMENTS
font style='font-size:12px;'>
2011/11/14
The mineral composition of clay (<2 μm)- and silt (<63 μm)-fractions from sediments sampled at Sites 781 through 784 and 786 from the Mariana and Izu-Bonin forearcs (ODP Leg 125), were investigated by...
Influence of Climate on the Iron Oxide Mineralogy of Terra Rossa
Goethite Hematite Pedoclimate Terra rossa XRD
font style='font-size:12px;'>
2011/11/30
Abstract: Terra rossa samples were taken from the B horizons of soil profiles and from cracks within limestone in Italy. The average annual temperature (AAT) of the sites ranged from 8.4 to 20.3°C and...
REGIONAL CORRELATION OF MINERALOGY AND DIAGENESIS OF SEDIMENT FROM THE EXMOUTH PLATEAU AND ARGO BASIN, NORTHWESTERN AUSTRALIAN CONTINENTAL MARGIN
mineral associations juvenile-to-mature evolution Palygorskite
font style='font-size:12px;'>
2011/11/8
Correlation of mineral associations from sediment recovered on the northwestern Australian continental margin document the juvenile-to-mature evolution of a segment of the Indian Ocean. Lower Cretaceo...
Mineralogy and Genesis of Clays in Postmagmatic Alteration Zones, Makurazaki Volcanic Area, Kagoshima Prefecture, Japan
Makurazaki volcanic area Alteration aureoles Mode of occurrence Mineralogical properties Sudoite Tosudite Rectorite
font style='font-size:12px;'>
2012/1/4
Two distinct zonal sequences of clay minerals (H- and L-type) were found around silicified rocks in the Makurazaki volcanic area, Kagoshima Prefecture, Japan. The clay mineral sequences from the inner...
Clay Mineralogy, Alteration History, and Economic Geology of the Whitemud Formation, Southern Saskatchewan, Canada
Abrasion Brightness Eastend Formation Frenchman Formation Kaolin Kaolinite Paleosol Whitemud Formation
font style='font-size:12px;'>
2012/1/4
The Upper Cretaceous (Maastrichtian) Whitemud Formation is a potentially commercial kaolin deposit located in southern Saskatchewan and southeastern Alberta. The Whitemud Formation contains a lower ka...
CLAY MINERALOGY OF NEOGENE SEDIMENTS OF THE WESTERN ARABIAN SEA:MINERAL ABUNDANCES AND PALEOENVIRONMENTAL IMPLICATIONS
CLAY MINERALOGY THE WESTERN ARABIAN SEA
font style='font-size:12px;'>
2011/11/7
Clay mineral relative abundances in approximately 450 samples from cores recovered during ODP Leg 117 in the Arabian Sea have been used to examine the paleoclimatic, paleoenvironmental, and tectonic h...
Mineralogy, Chemistry, and Diagenesis of Tuffs in the Sucker Creek Formation (Miocene), Eastern Oregon
Clinoptilolite Diagenesis Opal-CT Smectite Tuff Zeolites
font style='font-size:12px;'>
2012/1/5
The lacustrine Sucker Creek Formation (Miocene) of eastern Oregon includes unaltered vitric tufts as well as tufts altered to the following diagenetic facies: (1) bentonite, (2) interbedded bentonite ...
Mineralogy, Geochemistry, and Origin of the Underclays of the Central Coal Basin, Asturias, Spain
Chlorite Diagenesis Illite Illite/smectite Paragonite Pyrophyllite Underclay
font style='font-size:12px;'>
2012/1/4
Samples of underclays corresponding to nine different coal beds of the María Luisa coal seam in the Aller valley (Asturias, Spain) were collected to determine whether their mineralogy and geochemistry...
Weathering of Iron-Bearing Minerals in Soils and Saprolite on the North Carolina Blue Ridge Front: II. Clay Mineralogy
Chlorite Goethite Hematite Iron Kaolinite Mossbauer spectroscopy Saprolite Soils Vermiculite Weathering
font style='font-size:12px;'>
2011/11/30
Abstract: The mineralogy of the clay fraction was studied for soils and saprolite on two Blue Ridge Front mountain slopes. The clay fraction contained the weathering products of primary minerals in th...
Weathering of Basalt: Changes in Rock Chemistry and Mineralogy
Basalt Core-stone Element mobilization Goethite Halloysite Smectite Weathering
font style='font-size:12px;'>
2012/1/10
The weathering of eastern Australian basalts, sampled from the rounded, hard, core-stone to the rind of softer weathered material, has been examined by bulk chemical analyses, thin section petrography...
Mossbauer Spectroscopic Study of the Iron Mineralogy of Post-Glacial Marine Clays
Hematite Iron Magnetite Mossbauer spectroscopy Quick clay Smectite Yield strength
font style='font-size:12px;'>
2012/1/12
Three post-glacial marine clays from eastern Canada and one marine clay from Japan have been studied by M鰏sbauer spectroscopy to ascertain their iron mineralogy. Small amounts of hematite (in two samp...
Mineralogy from Geochemical Well Logging
Elemental analysis Illite Kaolinite Mineralogical analysis Multivariate analysis Neutron capture cross section Well logging
font style='font-size:12px;'>
2012/1/11
Multivariate statistical analyses of geochemical, mineralogical, and cation-exchange capacity (CEC) data from a Venezuelan oil well were used to construct a model which relates elemental concentration...
Effect of Clay Mineralogy and Aluminum and Iron Oxides on the Hydraulic Conductivity of Clay-Sand Mixtures
Aluminum oxide Exchangeable sodium percentage Hydraulic conductivity Illite Iron oxide Montmorillonite Salinity Sand
font style='font-size:12px;'>
2012/2/2
Changes in hydraulic conductivity and clay dispersivity of clay-sand mixtures (four reference smectites and Fithian illite) as a function of concentration (0.01 M Cl− and distilled water) and so...
Mineralogy, Crystallinity, O18/O16, and D/H of Georgia Kaolins
Crystallinity Hardness Isotope Kaolin Origin Oxygen isotopes
font style='font-size:12px;'>
2012/1/13
Mineralogy, kaolin crystallinity, Fe content, 銸18, and 銬 were determined for late Cretaceous 搒oft?and early Tertiary 揾ard?Georgia kaolins. The crystallinity of the <0.5-, 0.5?.0-, and 1.0?.0- 祄 size f...
Mineralogy and Genetic Relationships of Tonstein, Bentonite, and Lignitic Strata in the Eocene Yegua Formation of East-Central Texas
Bentonite Clinoptilolite Kaolinite Lignite Smectite Tonstein Weathering
font style='font-size:12px;'>
2012/2/6
A kaolinite-rich bed (tonstein) and an associated bentonite in the upper part of Yegua Formation at College Station, east-central Texas, were formed by in situ weathering processes in a late Eocene sw...