Terrestrial paleoenvironment characterization across the Permian–Triassic boundary in South China

Sulfur geochemistry across a terrestrial Permian^Triassic boundary section in the Karoo Basin, South Africa

Concentrations of sulfur and carbon, and isotopic compositions of sulfur were determined in sedimentary rocks from a section across the terrestrial Permian^Triassic (P^Tr) boundary in the northern Karoo Basin, South Africa. High concentrations of sulfide produced by sulfate-reducing bacteria were found in the sedimentary rocks at and just below the perceived P^Tr boundary. The ratios of organic...

Carbon cycle perturbation expressed in terrestrial Permian–Triassic boundary sections in South China

the caspian sea s role in energy supply to china

چکیده ندارد.

Sulfur isotopic compositions across terrestrial Cretaceous-Tertiary boundary successions

Isotopic compositions of sulfur and concentrations of sulfur and carbon have been measured for sedimentary rocks across terrestrial Cretaceous-Tertiary (K-T) boundary successions that originated from flood-plain and backswamp environments. Organic carbon contents are relatively constant below the boundary (26 cm for the Dogie Creek section and 9 cm for the Brownie Butte section), but change abr...

Terrestrial background radiation studies in South Konkan, Maharashtra, India

Background: The natural radionuclides are always present in soil and care needs to be taken to minimize the radiation dose to humans. These radionuclides are mostly gamma ray emitting radionuclides which contribute to the radiation dose in long term behavior of radionuclides in soil. Health hazards associated with natural radioactivity are of great concern and it is necessary to assess risk due...