Journal ArticleDOI
Os, Sr, Nd, and Pb isotope systematics of southern African peridotite xenoliths: Implications for the chemical evolution of subcontinental mantle
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TLDR
Isotope analyses of Os, Sr, Nd, and Pb elements were caried out on twelve peridotite xenoliths from the Jagersfontein, Letseng-la-terae, Thaba Patsoa, Mothae, and Premier kimberlites of southern Africa, to investigate the timing and the nature of melt extraction from the continental lithosphere and its relation to the continent formation and stabilization.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1989-07-01. It has received 688 citations till now. The article focuses on the topics: Peridotite & Craton.read more
Citations
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Highly siderophile elements in the earth, moon, and mars: update and
Richard J. Walker,L. Loudin +1 more
TL;DR: In this paper, the highly siderophile elements (HSE) present in the Earth's upper mantle and the martian mantle are broadly similar, and only about 200 times lower than those of chondritic meteorites.
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Tracking mammoths and mastodons: Reconstruction of migratory behavior using strontium isotope ratios
TL;DR: In this article, variations in the strontium isotope ratio (87 Sr/ 86 Sr) of tooth enamel were used to examine the migration patterns of late Pleistocene mammoths and mastodons from Florida.
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Osmium isotopic characteristics of mantle-derived rocks
TL;DR: Osmium isotopic compositions and Re and Os concentrations have been determined on ultramafic and mafic rocks derived from the contemporary mantle as mentioned in this paper, and these samples have a large range in measured 187 Os 186 Os (1.0032 to 1.173).
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Isotopic Tracking of Change in Diet and Habitat Use in African Elephants
Paul L. Koch,Jennifer Heisinger,Cynthia F. Moss,Richard W. Carlson,Marilyn L. Fogel,Anna K. Behrensmeyer +5 more
TL;DR: The high isotopic variability produced by behavioral and ecological shifts, if it is representative of other East African elephant populations, may complicate the use of isotopes as indicators of the source region of ivory.
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Re-Os systematics of mantle xenoliths from the East African Rift: age, structure, and history of the Tanzanian craton
TL;DR: In this paper, a systematic study of mantle xenoliths from the Labait volcano, which lies within the East African Rift on the eastern boundary of the Archean Tanzanian craton, was conducted.
References
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On the regional variation of heat flow, geotherms, and lithospheric thickness☆
TL;DR: In this article, Pollack et al. constructed a global map of lithospheric thickness based on the regional variation of surface heat flow, geotherms, and lithosphere thickness, and identified the lid as synonymous with the lithosphere.
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A Redetermination of the Relative Abundances of the Isotopes of Carbon, Nitrogen, Oxygen, Argon, and Potassium
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The composition and evolution of the continental crust: rare earth element evidence from sedimentary rocks
TL;DR: In this article, a revised andesite model is used to obtain total crustal composition, assuming that the upper crust, one-third of the total, is derived from intracrustal partial melting.