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Showing papers by "Geoff Nowell published in 2006"

Journal Article•DOI•
Methods for the microsampling and high-precision analysis of strontium and rubidium isotopes at single crystal scale for petrological and geochronological applications

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Bruce L. A. Charlier1, Bruce L. A. Charlier2, Catherine Ginibre2, Catherine Ginibre3, Daniel J. Morgan2, Geoff Nowell2, D.G. Pearson2, Jon P. Davidson2, Chris J. Ottley2 •
Open University1, Durham University2, University of Geneva3
15 Sep 2006-Chemical Geology
TL;DR: In this paper, the authors present a methodology for the precise analysis of ng-levels of Rb and Sr purified from microgram-sized solid samples extracted from minerals in thin sections.

264 citations

Journal Article•DOI•
Trace Element and Sr-Pb-Nd-Hf Isotope Evidence for Ancient, Fluid-Dominated Enrichment of the Source of Aldan Shield Lamproites

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Gareth Davies, AJ Stolz1, I. L. Mahotkin, Geoff Nowell, D.G. Pearson •
Max Planck Society1
01 Jun 2006-Journal of Petrology
TL;DR: A phase of Mesozoic extension associated with the termination of continental collision at the southern margin of the Aldan Shield produced ultrabasic lamproites in a discontinuous belt 500 km long and ∼150 km wide as mentioned in this paper.
Abstract: A phase of Mesozoic extension associated with the termination of continental collision at the southern margin of the Aldan Shield produced ultrabasic lamproites in a discontinuous belt 500 km long and ∼150 km wide. The lamproites, locally poorly diamondiferous, were emplaced as dykes, sills and pipes. All Aldan lamproites have primitive chemical characteristics (e.g. MgO up to 22·7 wt %) and are ultrapotassic (K

92 citations