Results 111 to 120 of about 16,929 (223)

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

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 4

, 1991
The Connaigre Bay Group is a sequence of subaerial volcanic rocks (basait, rhyolite) and interbedded sediments that outcrops in the southwestern part of the Avalon Zone, in central Newfoundland. Although not previously dated, it has been considered to be latest Proterozoic in age, based on lithological correlations with the nearby long Harbour Group ...
openaire   +1 more source

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  

The relation between isotopic composition of argon and carbon in natural gases [PDF]

The methods and results of determination of the argon and carbon isotope compositions of hydrocarbon gases of Mezozoic complexes of Western Siberia are presented.
Gavrilov, Y. Y., Teplinskiy, G. I., Zhurov, Y. A.   +2 more
core   +1 more source

Radiogenic Age and Isotopic Studies: Report 1

, 1987
Analytical procedures for V-Pb isotope dilution analyses at the Geological Survey of Canada geochronol­ogy laboratory are described in detail. The procedures apply to zircon, monazite, sphene, rutile, bad­deleyite, thorite, apatite, allanite, and gamet.
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

Coupled strontium-calcium isotopes in Archean anorthosites reveal a late start for mantle depletion. [PDF]

Nat Commun
Boyce M, Kemp A, Fisher C, Bevan D, Bevan D, Sadekov A, Lewis J, Wilde S, Ivanic T, Elliott T.   +9 more
europepmc   +1 more source

Prediction of radiogenic Sr and Pb isotope signatures in plants using diffusive gradients in thin films. [PDF]

Anal Bioanal Chem
Wagner S, Santner J, Puschenreiter M, Irrgeher J, Prohaska T.   +4 more
europepmc   +1 more source

Fluid inclusions: tiny windows into global paleo-environments. [PDF]

Commun Earth Environ
Bekaert DV, Avice G, Marty B.
europepmc   +1 more source