Earth's heterogeneous mantle: A product of convection-driven interaction between crust and mantle

A Stracke - Chemical Geology, 2012 - Elsevier
Ubiquitous heterogeneity in the Earth's mantle has been documented by numerous
chemical and isotopic analyses of oceanic basalts. Despite the ever-increasing amount of …

The magmatic and magmatic-hydrothermal evolution of felsic igneous rocks as seen through Nb-Ta geochemical fractionation, with implications for the origins of rare …

C Ballouard, M Massuyeau, MA Elburg, S Tappe… - Earth-Science …, 2020 - Elsevier
Abstract Despite Nb and Ta being considered as 'geochemical twins', most Ta mineral
deposits are associated with muscovite-bearing peraluminous granites and related …

Geochemistry of CI chondrites: Major and trace elements, and Cu and Zn isotopes

JA Barrat, B Zanda, F Moynier, C Bollinger… - … et Cosmochimica Acta, 2012 - Elsevier
In order to check the heterogeneity of the CI chondrites and determine the average
composition of this group of meteorites, we analyzed a series of six large chips (weighing …

Chemical variations and regional diversity observed in MORB

R Arevalo Jr, WF McDonough - Chemical Geology, 2010 - Elsevier
An assemblage of MORB analyses (n= 792 samples), including a suite of new, high-
precision LA-ICP-MS measurements (n= 79), has been critically compiled in order to provide …

Temperature, pressure, and composition of the mantle source region of Late Cenozoic basalts in Hainan Island, SE Asia: a consequence of a young thermal mantle …

XC Wang, ZX Li, XH Li, J Li, Y Liu, WG Long… - Journal of …, 2012 - academic.oup.com
Abstract Basaltic lavas from Hainan Island near the northern edge of the South China Sea
have an age range of between late Miocene (about 13 Ma) and Holocene, with a peak age …

The Bikou basalts in the northwestern Yangtze block, South China: Remnants of 820–810 Ma continental flood basalts?

XC Wang, XH Li, WX Li, ZX Li, Y Liu… - Geological …, 2008 - pubs.geoscienceworld.org
Mantle plume or superplume activities have often been invoked as a cause for the breakup
of the Neoproterozoic supercontinent Rodinia. However, associated Neoproterozoic …

Recycled crust controls contrasting source compositions of Mesozoic and Cenozoic basalts in the North China Craton

Y Liu, S Gao, PB Kelemen, W Xu - Geochimica et cosmochimica acta, 2008 - Elsevier
We explore Fe/Mn and Nb/Ta ratios of basalts as potential tracers for differentiating melts of
recycled mafic crustal lithologies from peridotitic melts. Trace elements and Fe/Mn ratios of …

Mobilization of Ti–Nb–Ta during subduction: evidence from rutile-bearing dehydration segregations and veins hosted in eclogite, Tianshan, NW China

J Gao, T John, R Klemd, X **ong - Geochimica et Cosmochimica Acta, 2007 - Elsevier
Field evidence from the western Tianshan subduction complex in northwestern China
indicates that the high field strength elements Ti, Nb, and Ta were mobilized and thereby …

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) …

Hf isotope compositions of US Geological Survey reference materials

D Weis, B Kieffer, D Hanano… - Geochemistry …, 2007 - Wiley Online Library
A systematic multi‐isotopic and trace element characterization of US Geological Survey
reference materials has been carried out at the Pacific Centre for Isotopic and Geochemical …