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Burial sites show how Nubians,Egyptians integrated communities thousands of years ago in Nile River Valley area
Burial sites Nubians Egyptians integrated communities Nile River Valley area
2016/5/31
New bioarchaeological evidence shows that Nubians and Egyptians integrated into a community, and even married, in ancient Sudan, according to new research from aPurdue University anthropologist.“...
Organic carbon burial efficiency in lake sediments controlled by oxygen exposure time and sediment source
Organic carbon burial efficiency lake sediments controlled oxygen exposure time sediment source
2014/4/17
We compared the burial efficiency of organic carbon (buried OC : depositedOC) in a diverse set of 27 different sediments from 11 lakes, focusing on the potential effects of organic matter source, oxyg...
Ferroan dolomite cement in Cambrian sandstones:burial history and hydrocarbon generation of the Baltic sedimentary basin
Ferroan dolomite cement Stable isotopes Cambrian sandstones Baltic basin
2009/10/20
The conditions and timing of carbonate cementation in Cambrian sandstones of the Baltic sedimentary basin were determined by oxygen and carbon stable isotope and chemical data in combination with opti...
Phosphorus burial in the ocean over glacial-interglacial time scales
Phosphorus burial ocean glacial-interglacial time scales
2010/1/19
The role of nutrients, such as phosphorus (P), and their impact on primary productivity and the fluctuations in atmospheric CO2 over glacial-interglacial periods are intensely debated. Suggestions as ...
Incorporation and burial of carbon from settling cyanobacterial blooms by deposit-feeding macrofauna
Incorporation and burial of carbon settling cyanobacterial blooms deposit-feeding macrofauna
2014/4/21
Summer blooms of filamentous, nitrogen-fixing cyanobacteria are typical of the Baltic Sea, and recent findings indicate that cyanobacteria may be an important food source for the benthos below the eup...
Quasi-100 ky glacial-interglacial cycles triggered by subglacial burial carbon release
glacial-interglacial cycles subglacial carbon
2008/11/4
A mechanism is proposed in which climate, carbon cycle and icesheets interact with each other to produce a feedback that can lead to quasi-100 ky glacial-interglacial cycles. A central process is the ...
Composition of Clinoptilolite Formed from Volcanic Glass during Burial Diagenesis
Burial Diagenesis Cation Exchange Clinoptilolite Volcanic Glass Zeolite
2011/12/2
Abstract: The composition of clinoptilolite formed from volcanic glass was investigated from cuttings collected from the offshore MITI-Somaoki borehole, 52 km east of Soma City, Japan. Unaltered volca...
Burial Diagenetic Processes and Clay Mineral Formation in the Molasse Zone of Upper Austria
Austria Diagenesis High-Charged Smectite Illite-Smectite Molasse Basin
2011/12/8
Abstract: Cores of pelitic sediments (Eocene-Miocene) of the drillings Puchkirchen 1 and Geretsberg 1 (Molasse Basin, Upper Austria) have been studied to determine the mineralogical and chemical chang...
Late-Stage Diagenesis of Illitic Clay Minerals as Seen by Decomposition of X-ray Diffraction Patterns: Contrasted Behaviors of Sedimentary Basins with Different Burial Histories
Clay Minerals Decomposition Diagenesis Illite Illite-Smectite Mixed Layering X-ray Powder Diffraction
2011/12/2
Abstract: The smectite-to-illite diagenetic transformation has been documented in 5 different sedimentary basins using X-ray diffraction (XRD). Intermediate reaction products coexisting because of the...
Stratigraphy of the lunar highland crust: Depths of burial of lunar samples from cooling-rate studies
Stratigraphy lunar highland crust Depths lunar samples cooling-rate studies
2012/4/6
Currentmodelsoflunar crustal stratigraphy arebased primarily onmodelsofimpact cratering coupled withwhatis known about the distribution ofrock types in the ejecta blanketsassociated withthe large mult...
K Transfer During Burial Diagenesis in the Mahakam Delta Basin (Kalimantan, Indonesia)
Diagenesis Illitization K transfer
2011/12/23
Abstract: Progressively buried sandstones and shales of the Mahakam Delta Basin in Indonesia were studied. Mineralogical, morphological and K-Ar isotopic data were obtained for clay, mica and feldspar...
Three Zones for Illite Formation during Burial Diagenesis and Metamorphism
Age dating Burial diagenesis Gulf Coast basin Illite Illite/smectite Ostwald ripening Potassium/argon Punctuated diagenesis
2011/12/1
Abstract: Reinterpretation of published data for shale cuttings from the Gulf of Mexico sedimentary basin identifies three reaction zones for illite formation with increasing depth for well CWRU6. In ...
Burial Diagenesis in Two Montana Tertiary Basins
Diagenesis Illite Illite/smectite Smectite Tarasovite Volcaniclastic
2011/12/31
Samples from initially smectite-rich Tertiary continental volcaniclastic sediment from the Deer Lodge and Big Hole basins of southwestern Montana show a general decrease in illite/smectite (I/S) expan...
Oxygen Isotopes and the Extent of Diagenesis of Clay Minerals during Sedimentation and Burial in the Sea
Diagenesis Gulf of Mexico Isotope Mississippi River Oxygen Sedimentation Smectite
2012/1/12
Oxygen isotope ratios of <0.1-µm smectite in bottom sediments of the Mississippi River and the Gulf of Mexico near the mouth of the river have been determined to investigate diagenesis of land-d...
Burial and Contact Metamorphism in the Mancos Shale
Bentonite Burial metamorphism Illite Interstratification Shale Smectite X-ray powder diffraction
2012/2/8
Clay samples from shales and bentonites in the Mancos Shale (Cretaceous) and its stratigraphic equivalents in the southern Rocky Mountain and Colorado Plateau have been analyzed by X-ray powder diffra...