Results 121 to 130 of about 4,093 (226)

The Orenburg Urals Population from the End of the Middle to the Beginning of the Late Bronze Age based on Isotopic Research

Археология евразийских степей
This study analyzes the ratios of strontium isotopes, and stable isotopes of nitrogen and carbon, in samples from human and animal remains originating from multicultural sites in the Orenburg Urals region dating to the end of the Middle and the beginning
Lidiya V. Kuptsova, Maria B. Mednikova
doaj   +1 more source

Assessing Pb Isotopic Equilibrium Between Apatite and K‐Feldspar

Geochemistry, Geophysics, Geosystems
Quantifying 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, Christopher L. Kirkland, Janne Liebmann, Hugo K. H. Olierook   +3 more
doaj   +1 more source

Carbon and oxygen isotope geochemistry of Neoproterozoic limestones of the Shahabad Formation, Bhima basin, Karnataka, southern India

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, Alcides N. Sial, John S. Armstrong-Altrin, Jayagopal Madhavaraju, Raghavendra Nagendra   +4 more
doaj  

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  

Detrital Input Sustains Diatom Production off a Glaciated Arctic Coast

Geophysical Research Letters
In the Arctic and subarctic oceans, the relatively low supply of silicon (compared to other nutrients) can make it limiting for the growth of diatoms, a fundamental building block of the oceanic food web.
Hong Chin Ng, Katharine R. Hendry, Rachael Ward, E. M. S. Woodward, Melanie J. Leng, Rebecca A. Pickering, Jeffrey W. Krause   +6 more
doaj   +1 more source

Isotopes : principles and applications

Covering radiogenic, radioactive, and stable isotopes, this comprehensive text contains five sections that present fundamentals of atomic physics; dating methods for terrestrial and extraterrestrial rocks by means of radiogenic isotopes; geochemistry of ...
Faure, Gunter
core  

Isotopic lead measurements in wine and edible oil using inductively coupled plasma with mass spectrometry

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, Sasa Mitrev, Violeta Ivanova-Petropulos, Rubin Gulaboski   +3 more
doaj  

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

Hidden pressure-stabilized lead reservoirs in Earth's mantle. [PDF]

Nat Commun
Liu S, Guo M, Yu S, Redfern SAT.
europepmc   +1 more source

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