Results 121 to 130 of about 2,514 (184)

A whole-scale volatile-depleted lunar interior. [PDF]

Proc Natl Acad Sci U S A
Dai W, Moynier F, Long ZY, Fang L, Day JMD, Paquet M, Siebert J.   +6 more
europepmc   +1 more source

Growth of continental crust and lithosphere subduction in the Hadean revealed by geochemistry and geodynamics. [PDF]

Nat Commun
Vezinet A, Chugunov AV, Sobolev AV, Jain C, Sobolev SV, Batanova VG, Asafov EV, Koshlyakova AN, Arndt NT, Danyushevsky LV, Valley JW.   +10 more
europepmc   +1 more source

Candidate serum metabolite biomarkers of subclinical Haemonchus contortus infection in sheep. [PDF]

Sci Rep
Jawad H, Gellatly D, Lei Y, Thompson S, Borzouie S, Osonowo O, Gilleard JS, Miar Y, Goldansaz SA, Manafiazar G.   +9 more
europepmc   +1 more source

Mantle upwelling at Afar triple junction shaped by overriding plate dynamics. [PDF]

Nat Geosci
Watts EJ, Rees R, Jonathan P, Keir D, Taylor RN, Siegburg M, Chambers EL, Pagli C, Cooper MJ, Michalik A, Milton JA, Hincks TK, Gebru EF, Ayele A, Abebe B, Gernon TM.   +15 more
europepmc   +1 more source

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Sm-Nd Isotopic Data and Earth's Evolution

Science, 1996
Samuel A. Bowring and Todd Housh (1) report Sm/Nd isotopic data giving a wide range of initial ENd values, from +3.5 to -4 at 4.0 billion years ago (Ga) and from +4 to -7 at 3.6 Ga. Their samples were from the Acasta gneisses of northern Canada, which represent the oldest known outcrops of continental crust (2).
S, Moorbath, M J, Whitehouse
openaire   +2 more sources

Sm-Nd isotopic evolution of chondrites

Earth and Planetary Science Letters, 1980
The ^(143)Nd/^(144)Nd and ^(147)Sm/^(144)Nd ratios have been measured in five chondrites and the Juvinas achondrite. The range in ^(143)Nd/^(144)Nd for the analyzed meteorite samples is 5.3 e-units (0.511673–0.511944) normalized to ^(150)Nd/^(142)Nd= 0.2096. This is correlated with the variation of 4.2% in ^(147)Sm/^(144)Nd (0.1920–0.2000).
Jacobsen, Stein B., Wasserburg, G. J.
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Sm-Nd isotopic provinces of the Aldan Shield

Doklady Earth Sciences, 2006
The formation of the Early Precambrian continental crust is among the most topical problems of modern geology and petrology and has remained a subject of debate for several decades. The Sm‐Nd isotopic mapping, which occupies an important place among modern methods developed for the solution of this issue, makes it possible to estimate the relative ...
A. B. Kotov, E. B. Sal’nikova, V. A. Glebovitsky, V. P. Kovach, A. M. Larin, S. D. Velikoslavinsky, N. Yu. Zagornaya   +6 more
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Evidence for inherited Sm?Nd isotopes in granitoid zircons

Contributions to Mineralogy and Petrology, 1992
This study presents evidence to show that, in addition to preserving U−Pb isotope systematics, refractory zircons also preserve, at least in part, an inherited Sm−Nd isotope component. The zircons analyzed during this study were taken from the Strontian granitoid (NW Scotland). The inner intrusion of this composite pluton is known from a previous study
Rogers, G., Stephens, W. E., Paterson, B. A.   +2 more
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Sm-Nd and Rb-Sr isotopic systematics of ureilites

Geochimica et Cosmochimica Acta, 1991
The present evaluation of Sm-Nd and Rb-Sr isotopic data for seven ureilites establishes their divisions into three groups on the bases of Sm-Nd isotopic systematics. The first group of ureilites is made up of whole-rock samples whose highly depleted assemblages indicate Sm-Nd model ages consistent with 4.55 Ga. The second group of whole-rock samples of
Cyrena Anne Goodrich, P.Jonathan Patchett, Gunter W Lugmair, Michael J Drake   +3 more
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Direct radiometric dating of bitumen using Sm-Nd isotopes

AAPG Bulletin, 2023
ABSTRACT The Sm–Nd geochronology has great potential to directly constrain the age of hydrocarbon generation, migration, and charging; however, this technique has been rarely applied and poorly understood in the context of timing of petroleum system formation and evolution. In this contribution, we carried out a comprehensive study of
Mao-Wen Yuan, Lin Li, Sheng-Rong Li, M. Santosh, Cheng-Lu Li, Masroor Alam, Zeng-Qian Hou, Ming Li   +7 more
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