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Mineral composition and organic geochemistry of the Lower Cretaceous Xiagou Formation source rock from the Qingxi Sag, Jiuquan Basin, Northwest China
Mineral composition Geochemistry Source rock Xiagou Formation Qingxi Sag Jiuquan Basin
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2018/4/2
The Lower Cretaceous Xiagou Formation contains the major source rocks for the crude oils discovered in the Qingxi Sag and the South Uplift in the Jiuquan Basin, northwestern China. The Xiagou Formatio...
Mg-borate deposit formation: Recharge and lake water hydrogeochemistry of Nie`er Co Lake, northwestern Tibet
hydrogeochemistry stable isotopes water enrichment borate deposit Tibet
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2017/4/10
The formation of lake terrace and salar-type lake-bed borate deposit at Nie`er Co Lake (hereafter Nie`er Co), northwestern
Tibet, remain debated. We performed a detailed study of the hydrogeochemistr...
Sequential chemical extraction of arsenic and related elements from the Holocene sediments of Sonargaon, Bangladesh, in relation to formation of arsenic-contaminated groundwater
BCR method ferrihydrite goethite chlorite chemical weathering
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2017/4/11
The mineralogy and chemistry of aquifer sediments of As-contaminated groundwater in Sonargaon, Bangladesh were
analyzed to identify the host phases of As and to understand release mechanism of As int...
Tube ultrastructure of Pomatoceros americanus(Polychaeta,Serpulidae):implications for the tube formation of serpulids
Serpulidae biomineralization tube ultrastructure tube formation
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2009/10/21
The inner tube layer of Pomatoceros americanus has a complex oriented ultrastructure, which cannot be explained by the standard granular secretion model, predicting a largely unoriented structure of t...
New biostratigraphic and chemostratigraphic data from the Chicotte Formation (Llandovery,Anticosti Island,Laurentia) compared with the Viki core (Estonia,Baltica)
conodonts stable carbon isotopes Anticosti Estonia Llandovery Telychian
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2009/10/21
Due to the lack of biostratigraphically useful graptolites in the crinoidal and reefal Chicotte Formation on Anticosti Island (Québec, Canada), the precise chronostratigraphic position of the formatio...
Heterogeneities of hydrocarbon compositions in mudstones of a turbiditic sequence of the Miocene Kawabata Formation in Yubari, central Hokkaido, Japan
hydrocarbon biomarker turbiditic sequence geochemical heterogeneity terrigenous material transport paleoenvir
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2017/8/10
Biomarker analyses of aliphatic and aromatic hydrocarbons were conducted on the upper and lower parts of individual mudstones in a turbiditic sequence of the Miocene Kawabata Formation, Yubari, centra...
High-resolution profiles and nitrogen isotope tracing reveal a dominant source of nitrous oxide and multiple pathways of nitrogen gas formation in the central Arabian Sea
High-resolution profiles nitrogen isotope tracing reveal dominant source of nitrous oxide multiple pathways nitrogen gas formation in the central Arabian Sea
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2014/4/22
The oxygen minimum zone (OMZ) of the Arabian Sea is a significant source of nitrous oxide (N2O), yet the metabolism responsible for N2O production is unclear. High-resolution profiles identified peaks...