Results 121 to 130 of about 16,800 (234)

Comparing Geochemical and Geodynamical Models of Plume and Ridge Mantle Source Composition

Geochemistry, Geophysics, Geosystems
We use a multidisciplinary approach to investigate how the parameter space of mantle convection affects present‐day mantle composition. We compare 22 forward geodynamical mantle circulation model simulations against 24 variants of a geochemical inversion
Paul Béguelin, James Panton, Morten Andersen, Tim Elliott, Huw Davies, Joel Rodney, Abigail Plimmer   +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

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 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

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

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

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

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

Characterization of the HIMU Mantle Source from Noble Gas Isotopes in Volcanic Gas Emissions in São Tomé (Cameroon Volcanic Line). [PDF]

ACS Earth Space Chem
Lastes A, Bekaert DV, Tibari B, Seltzer AM, Broadley MW, Barry PH, Marty B.   +6 more
europepmc   +1 more source

Geochemical fingerprinting of plume in Suswa silicic volcanics, Kenya rift. [PDF]

Sci Rep
Hong LB, Wang Y, Ma L, Huang WL, Jia ZJ, Peng JB.   +5 more
europepmc   +1 more source

Ancient storage of anomalous mercury isotope signatures in the Earth's transition zone. [PDF]

Nat Commun
Xu R, Yin R, White WM, Bizimis M, Cai Y, Zhang J, Chen C, Tian Z, Ruan T, Li Y, Zhang G, Liu L, Bai Z, Zhou M, Liu Y.   +14 more
europepmc   +1 more source