Results 131 to 140 of about 4,118 (239)
Assessing Pb Isotopic Equilibrium Between Apatite and K‐Feldspar
Geochemistry, Geophysics, GeosystemsQuantifying common Pb, the non‐radiogenic Pb present in a mineral independent of in situ U decay, is essential for obtaining accurate U–Pb ages in common Pb‐bearing minerals such as apatite.
Priyanjan Datta +3 more
doaj +1 more source
Radiogenic isotopes on marine sediments from the Baffin Bay : implications for the sediment supply during the last deglaciation [PDF]
, 2017 The Baffin Bay is a marginal sea of the Atlantic Ocean, a semi-enclosed basin, situated between Greenland, Baffin Island and the Canadian Arctic Archipelago (CAA).
Kirillova, Valeriia
core
Revista Mexicana de Ciencias Geológicas, 2018 Petrography, major (including four trace elements), stable isotopes (carbon and oxygen), and 87Sr/86Sr geochemistry of limestones of the Shahabad Formation, Bhima basin, Karnataka, southern India are reported.
Ramasamy Nagarajan +4 more
doaj
Water mass transformation in the Barents Sea inferred from radiogenic neodymium isotopes, rare earth elements and stable oxygen isotopes [PDF]
, 2018 Nearly half the inflow of warm and saline Atlantic Water (AW) to the Arctic Ocean is substantially cooled and freshened in the Barents Sea, which is therefore considered a key region for water mass transformation in the Arctic Mediterranean (AM ...
Hathorne, E. +7 more
core
Radiogenic age and isotopic studies: report 5
, 1992 U-Pb zircon ages of 2658.0 + 1.21-0.8 Ma and 2661 .3 +l.21-1.1 Ma were determined for Je/sic volcanic rocks in the Russell Lake and Clan Lake areas, respective/y, in the southwestern Slave Province. These are some of the youngest supracrustal rocks dated thus far in the Slave Province.
openaire +1 more source
Radiogenic isotope geology [PDF]
Modern isotope geochemistry is a rapidly expanding field that has a part to play in a broad range of earth and planetary sciences - from extra-solar system processes to environmental geoscience.
Dickin, Alan P.
core
Radiogenic Age and Isotopic Studies: Report 6
, 1992 Cretaceous strata are widely exposed in the northern Yukon and adjacent Northwest Territories, whereas Tertiary to Holocene strata tend to be limited to the Yukon coastal plain, northernmost Richardson Mountains and adjacent to the Mackenzie Delta. However, under Mackenzie Delta and the Beaufort Sea continental shelf there are 14 to 16 km of Upper ...
openaire +1 more source
Radiogenic age and isotopic studies: Report 2
, 1988 Numerical error analysis is applied to typical 40Ar/39Ar data. It extends previous error treatments to al! possible variables used in the calculation of ages of samples and shows that in some cases minor corrections may contribute significantly to age uncertainties.
openaire +1 more source
Journal of Agriculture and Plant Sciences, 2016 Lead isotope ratios provide analytical information related to the source of lead contamination in naturally occurring samples. On the other hand, these measurements can provide useful information for routine means of “fingerprinting” the components grown
Biljana Balabanova +3 more
doaj
Radiogenic age and isotopic studies: report 7
, 1993 Granulite facies ortho- and paragneisses and felsic intrusive rocks form the crystalline core of the Boothia Uplift, which extends northward from Boothia Peninsula into the Arctic Archipelago. The rocks dated come from northern Boothia Peninsula, western Somerset Island, and eastern Prince of Wales Island, between 71 °N and 74°N.
openaire +1 more source