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 …

[图书][B] Using geochemical data: evaluation, presentation, interpretation

HR Rollinson - 2014 - taylorfrancis.com
Using Geochemical Data: Evaluation, Presentation, Interpretation Page 1 Page 2 Using
Geochemical Data: Evaluation, Presentation, Interpretation Page 3 Other titles in the series An …

Element transport from slab to volcanic front at the Mariana arc

T Elliott, T Plank, A Zindler, W White… - Journal of Geophysical …, 1997 - Wiley Online Library
We present a comprehensive geochemical data set for the most recent volcanics from the
Mariana Islands, which provides new constraints on the timing and nature of fluxes from the …

Significance of Nb/Ta as an indicator of geochemical processes in the crust-mantle system

TH Green - Chemical geology, 1995 - Elsevier
A mantle value of∼ 17.5 for Nb/Ta appears well established; less well established are
crustal values of∼ 11–12, although it appears that Nb/Ta for crustal-derived melts is less …

Melting in the oceanic upper mantle: an ion microprobe study of diopsides in abyssal peridotites

KTM Johnson, HJB Dick… - Journal of Geophysical …, 1990 - Wiley Online Library
A systematic study of rare earth and other trace elements in discrete diopsides from residual
abyssal peridotites sampled from 5000 km of ocean ridge demonstrates that they are the …

Highly fractionated I-type granites in NE China (I): geochronology and petrogenesis

F Wu, B Jahn, SA Wilde, CH Lo, TF Yui, Q Lin, W Ge… - Lithos, 2003 - Elsevier
Northeastern (NE) China is the easternmost part of the Central Asian Orogenic Belt (CAOB),
which is celebrated for its accretionary tectonics and the world's most important juvenile …

Experimental cpx/melt partitioning of 24 trace elements

SR Hart, T Dunn - Contributions to Mineralogy and Petrology, 1993 - Springer
Cpx/melt partition coefficients have been determined by ion probe for 24 trace elements at
natural levels in an alkali basalt experimentally equilibrated at 1,380° C and 3 GPa. One …

Trace element models for mantle melting: application to volcanic arc petrogenesis

JA Pearce, IJ Parkinson - Geological Society, London, Special …, 1993 - lyellcollection.org
Understanding mantle melting above subduction zones requires an evaluation of the
behaviour of elements for which the mantle contribution greatly exceeds any subduction …

[PDF][PDF] Tracers of the slab

T Elliott - Geophysical Monograph-American Geophysical Union, 2003 - researchgate.net
In its simplest interpretation, this observation implies only a few thousand years elapse
between'fluid'release from the slab, and eruption of this component in arc lavas. In most …

Application of proton-microprobe data to trace-element partitioning in volcanic rocks

A Ewart, WL Griffin - Chemical Geology, 1994 - Elsevier
In situ proton microprobe analyses are used to calculate partition coefficients (D) for Mn, Fe,
Cu, Zr, Ga, Rb, Sr, Y, Zr, Ba and Pb, and more restricted data for Ni, Ge, Nb and As, in …