Results 101 to 110 of about 16,929 (223)

Modulation of the northward penetration of Antarctica intermediate waters into the eastern equatorial Indian Ocean under glacial and interglacial conditions

Scientific Reports
The Indo-Pacific warm pool is the warmest and most dynamic ocean–atmosphere-climate system on Earth and was subject to significant climate changes during the Pleistocene glacial-interglacial transitions.
Sandrine Le Houedec, Maxime Tremblin, Amaury Champion, Elias Samankassou   +3 more
doaj   +1 more source

Multi-isotope characteristics and residence time of saline geothermal waters in the coastal area of Xiamen bay, southeast China

Journal of Hydrology: Regional Studies
Study region: Xiamen bay, China: Study focus: The formation and circulation of saline geothermal water in coastal areas are crucial for the application of geothermal resources; however, its residence time and interaction with seawater are poorly ...
Jing Li, Chunlei Liu, Shengwei Cao, Xiaomin Lin, Qingshan Ma, Yasong Li   +5 more
doaj   +1 more source

The North American Repository for Archaeological Isotopes

Scientific Data
Here, we present the North American Repository for Archaeological Isotopes (NARIA), the largest open-access compilation of previously reported isotopic measurements (n = 28,374) from bioarchaeological samples in North America (i.e., Canada, Greenland ...
Traci N. Billings, Erin Scott, Carlo Cocozza, Sean Hixon, Nicole Boivin, Patrick Roberts, Robert N. Spengler, Ricardo Fernandes   +7 more
doaj   +1 more source

Reconstruction of changes in ocean circulation and continental weathering using radiogenic isotopes in marine sediments [PDF]

, 2006
Gutjahr, Marcus
core   +1 more source

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

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

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 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

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