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Two Types of Granites in the Western Yangtze Block and Their Implications for Regional Tectonic Evolution: Constraints from Geochemistry and Isotopic Data
I-type granite S-type granite geochemistry petrogenesis tectonic setting Western Yangtze Block
2018/4/10
In the western Yangtze Block, widespread Mesoproterozoic to Neoproterozoic rocks are the key to understanding the Precambrian tectonic-magmatic evolution of the region. However, their petrogenesis and...
Ancient plankton-like microfossils span two continents
Ancient plankton-like microfossils span two continents
2017/7/25
Large, robust, lens-shaped microfossils from the approximately 3.4 billion-year-old Kromberg Formation of the Kaapvaal craton in eastern South Africa are not only among the oldest elaborate microorgan...
Characteristics and source of polycyclic aromatic hydrocarbons in the surface hydrothermal sediments from two hydrothermal fields of the Central Indian and Mid-Atlantic Ridges
polycyclic aromatic hydrocarbons inorganic geochemical characteristic hydrothermal sediments Kairei hydrothermal field, Logatchev hydrothermal f
2017/4/11
The analysis of major elements and polycyclic aromatic hydrocarbons (PAHs) were carried out on surface hydrothermal
sediments collected from the Kairei hydrothermal field on the Central Indian Ridge ...
Synthesis of Pure Zeolite X from Palygorskite Clay Using a Two-Stage Method
Palygorskite Clay Synthesis Two-Stage Method Zeolite X
2011/11/14
A natural mineral, palygorskite clay, was used to synthesize pure zeolite X via a two-stage method. The synthetic parameters, such as calcination, crystallization time, and SiO2/Al2O3 molar ratio, wer...
Two-dimensional apparent microfabric of the basal Late Weichselian till and associated shear zone:case study from western Latvia
shear zone till microfabric micromorphology thin sections subglacial deformation
2009/10/21
The examination of glacial sediments in thin sections has become a common procedure in recent years. Apparent sand grain orientation (microfabric) in thin sections is one of the key elements marking c...
Palaeolimnological assessment of environmental change over the last two centuries in oligotrophic Lake Nohipalu Valgjärv,southern Estonia
lake sediment diatoms 210Pb chronology reference conditions Lake Nohipalu Valgjä rv
2009/10/21
The main objectives of this study were to reconstruct the environmental conditions for a small oligotrophic lake during the last two centuries, to determine if the environment of the lake was anthropo...
Shell colour pattern in two fossil helicid snails,Tropidomphalus incrassatus (KLEIN, 1853) and Cepaea sylvestrina gottschicki WENZ,1919,from the Middle Miocene of Poland
Shell pattern UV-light Helicidae Tropidomphalus Cepaea Miocene Poland
2009/10/20
Two fossil helicid snails, Tropidomphalus incrassatus (KLEIN, 1853) and Cepaea sylvestrina gottschicki WENZ,1919, from the “detrital Sarmatian” (Middle Miocene) of the northernmost part of the Fore-Ca...
When the "primitive" shark Tribodus(Hybodontiformes) meets the "modern" ray Pseudohypolophus (Rajiformes): the unique co-occurrence of these two durophagous Cretaceous selachians in Charentes(SWFrance)
Hybodontiformes Tribodus Rajiformes Pseudohypolophus Palaeoecology Palaeobiogeography
2009/10/20
The palaeoecology and palaeobiogeography of two Cretaceous selachian genera, Tribodus BRITO & FERREIRA,1989 and Pseudohypolophus CAPPETTA & CASE, 1975, are briefly discussed. These two similar-sized t...
Thermoanalytical characterization, stable isotope and paleoenvironmental considerations of kaolinite from two genetic sources
Thermoanalytical characterization stable isotope paleoenvironmental considerations kaolinite two genetic sources
2012/3/14
Thermoanalytical characterization, stable isotope and paleoenvironmental considerations of kaolinite from two genetic sources.
Phase Analysis of Clays Using an Expert System and Calculation Programs for X-Ray Diffraction by Two- and Three-Component Mixed-Layer Minerals
Clay Analysis Expert System Mixed-Layer Minerals Phase Analysis XRD
2011/12/2
Abstract: X-ray phase analysis of clays is difficult because these materials generally consist of a mixture of different phases, i.e., mixed-layer minerals, individual clay minerals (non mixed-layer),...
Geology and Characterization of Two Hydrothermal Nontronites from Weathered Metamorphic Rocks at the Uley Graphite Mine, South Australia
Amphibole Alteration Biotite Alteration Hydrothermal Alteration Infrared Spectroscopy NAu-1 NAu-2 Nontronite Weathering X-ray Diffraction
2011/12/6
Abstract: Mining operations during the early 1990s at Uley Graphite Mine near Port Lincoln on southern Eyre Peninsula, South Australia, uncovered abundant nontronite veins in deeply weathered granulit...
Crystal structures of two partially dehydrated chlorites: The "modified" chlorite structure
Crystal structures two partially dehydrated chlorites:The "modified" chlorite structure
2012/4/1
Chromian clinochlore-IIb-4 (triclinic) and IIb-2 (monoclinic) polytypes from the Day Book Body,
North Carolina, were heated to 650 ?C for 5 hours and air quenched. Single-crystal X-ray refinements
o...
Modeling of the solubility of a two-component H2O + CO2 fluid in silicate liquids
H2O + CO2 silicate liquids two-component
2012/3/31
Thesolubilityofatwo-component,H O CO ?uidinsilicateliquidswasmodeledby
assumingmechanical,thermal,andchemicalequilibriumbetweenthe?uidandliquidphas- H O CO )
es.Theliquidphasewastreatedasa12-compone...
High-resolution synchrotron X-ray powder diffraction and Rietveld structure refinement of two (Mg0.95,Fe0.05)SiO3 perovskite samples synthesized under different oxygen fugacity conditions
high-resolution synchrotron X-ray powder diffraction
2012/3/30
Thispaperpresentshigh-resolutionsynchrotronX-raypowderdiffractiondataat290K
ontwoFe-bearing,polycrystallinesilicateperovskitesampleswithapproximatecompo-
Fe )SiO synthesizedat25GPaand1920Kinamulti-a...
Involvement of genes of the two-step protein secretion pathway in the transport of the manganese-oxidizing factor across the outer membrane of Pseudomonas putida strain GB-1
Involvement of genes two-step protein secretion pathway transport manganese-oxidizing factor Pseudomonas putida strain GB-1
2012/4/1
Microorganisms can accelerate the rate of Mn21 oxidation by up to five orders of mag-nitude compared to abiotic Mn21 oxidation. Mn21 oxidation in Pseudomonas putida strain GB-1 involves an enzyme inco...