Geophysics of chemical heterogeneity in the mantle

L Stixrude, C Lithgow-Bertelloni - Annual Review of Earth and …, 2012 - annualreviews.org
Chemical heterogeneity, produced by the near-surface rock cycle and dominated
volumetrically by subducted oceanic crust and its depleted residue, is continuously …

Heterogeneous Hadean hafnium: evidence of continental crust at 4.4 to 4.5 Ga

TM Harrison, J Blichert-Toft, W Muller, F Albarede… - Science, 2005 - science.org
The long-favored paradigm for the development of continental crust is one of progressive
growth beginning at∼ 4 billion years ago (Ga). To test this hypothesis, we measured initial …

Hf isotope systematics of kimberlites and their megacrysts: new constraints on their source regions

GM Nowell, DG Pearson, DR Bell… - Journal of …, 2004 - academic.oup.com
Abstract Kimberlites from Southern Africa, along with their low-Cr megacrysts, have unusual
Hf–Nd isotopic characteristics. Group I and Transitional kimberlites define arrays trending …

The origin and evolution of the Kaapvaal cratonic lithospheric mantle

NSC Simon, RW Carlson, DG Pearson… - Journal of …, 2007 - academic.oup.com
A detailed petrological and geochemical study of low-temperature peridotite xenoliths from
Kimberley and northern Lesotho is presented to constrain the processes that led to the …

Re–Os isotope systematics and platinum group element fractionation during mantle melt extraction: a study of massif and xenolith peridotite suites

DG Pearson, GJ Irvine, DA Ionov, FR Boyd… - Chemical Geology, 2004 - Elsevier
Re–Os isotope and platinum group elements (PGE) systematics are presented for peridotite
xenoliths from N. Lesotho (on-craton), S. Namibia (circum-cratonic), the Vitim volcanic field …

The rif belt

A Chalouan, A Michard, KE Kadiri, F Negro… - … evolution: the geology …, 2008 - Springer
The Rif Belt belongs to a much larger orogen, ie the Betic-Rif-Tell orogen, which itself is part
of the still larger Mediterranean Alpine belts (Fig. 5.1; see also Chap. 1.1, Fig. 1.2). The Rif …

Between carbonatite and lamproite—diamondiferous Torngat ultramafic lamprophyres formed by carbonate-fluxed melting of cratonic MARID-type metasomes

S Tappe, SF Foley, BA Kjarsgaard, RL Romer… - … et Cosmochimica Acta, 2008 - Elsevier
New U–Pb perovskite ages reveal that diamondiferous ultramafic lamprophyre magmas
erupted through the Archean crust of northern Labrador and Quebec (eastern Canada) …

Origin of pyroxenite–peridotite veined mantle by refertilization reactions: evidence from the Ronda peridotite (Southern Spain)

JL Bodinier, CJ Garrido, I Chanefo… - Journal of …, 2008 - academic.oup.com
The Ronda orogenic peridotite (southern Spain) contains a variety of pyroxene-rich rocks
ranging from high-pressure garnet granulites and pyroxenites to low-pressure plagioclase …

Recycling plus: a new recipe for the formation of Alpine–Himalayan orogenic mantle lithosphere

D Prelević, DE Jacob, SF Foley - Earth and Planetary Science Letters, 2013 - Elsevier
The origin of the lithospheric mantle beneath accretionary orogens is enigmatic; although
severe compression of the buoyant crust occurs, the mantle lithosphere is generally thought …

The central atlantic magmatic province (CAMP) in Morocco

A Marzoli, H Bertrand, N Youbi, S Callegaro… - Journal of …, 2019 - academic.oup.com
Abstract The Central Atlantic Magmatic Province (CAMP) is a large igneous province (LIP)
composed of basic dykes, sills, layered intrusions and lava flows emplaced before Pangea …