Richard W. Carlson

TL;DR: In this paper, peridotite xenoliths carried in Paleozoic kimberlites and Tertiary alkali basalts confirm previous suggestions that the refractory and chemically buoyant lithospheric keel present beneath the eastern block of the North China craton is indeed Archean in age.

TL;DR: 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.

TL;DR: New high-precision samarium-neodymium isotopic data for chondritic meteorites show that their 142Nd/144Nd ratio is 20 parts per million lower than that of most terrestrial rocks, indicating that most (70 to 95%) of Earth's mantle is compositionally similar to the incompatible element–depleted source of mid-ocean ridge basalts.

TL;DR: In this article, the authors show that the composition of the Kaapvaal peridotite is very different from that of the post-Archaean peridote.

TL;DR: In this article, a suite of peridotite xenoliths from kimberlites intruding the Siberian craton indicate the presence of lithospheric mantle over 150 km thick at 350 Ma.