Isotopic modification of the continental crust: implications for the use of isotope tracers in granite petrogenesis

1990 ◽  
pp. 124-148 ◽  
Author(s):  
Stephen M. Wickham
Keyword(s):  
Continental Crust ◽  
Isotope Tracers ◽  
Isotopic Modification

Isotopic abundances relevant to the identification of magma sources

1984 ◽  
Vol 310 (1514) ◽  
pp. 591-603 ◽  
Keyword(s):  
Isotopic Composition ◽  
Continental Crust ◽  
Oceanic Crust ◽  
Rare Gas ◽  
Isotopic Signatures ◽  
Isotope Tracers ◽  
Isotope Tracer ◽  
Relative Contribution ◽  
Magma Sources ◽  
Isotopic Abundances

The behaviour of natural radiogenic isotope tracers in the Earth that have lithophile and atmophile geochemical affinity is reviewed. The isotope tracer signature of oceanic and continental crust may in favourable circumstances be sufficiently distinct from that of the mantle to render a contribution from these sources resolvable within the isotopic composition of the magma. Components derived from the sedimentary and altered basaltic portion of oceanic crust are recognized in some island arc magmas from their Sr, Nd and Pb isotopic signatures. The rare-gas isotope tracers (He, Ar, Xe in particular) are not readily recycled into the mantle and thus provide the basis of an approach that is complementary to that based on the lithophile tracers. In particular, a small mantle-derived helium component may be readily recognized in the presence of a predominant radiogenic component generated in the continents. The importance of assessing the mass balance of these interactions rather than merely a qualitative recognition is emphasized. The question of the relative contribution of continental-oceanic crust and mantle to magma sources is an essential part of the problem of generation and evolution of continental crust. An approach to this problem through consideration of the isotopic composition of sediments is briefly discussed.

Crust-mantle interactions during subduction of oceanic & continental crust

2014 ◽  
Vol 6 (1.3) ◽  
pp. 1-73 ◽  
Author(s):  
Daniele Castelli ◽  
Roberto Compagnoni ◽  
Bruno Lombardo ◽  
Samuele Angiboust ◽  
Gianni Balestro ◽  
...  
Keyword(s):  
Continental Crust

Time-dependent cortisol turnover in tissues using stable isotope tracers and MALDI Mass Spectrometry (MS) sampling

2018 ◽  
Author(s):  
Shazia Khan ◽  
Diego F Cobice ◽  
Dawn EW Livingstone ◽  
C Logan Mackay ◽  
Scott P Webster ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Stable Isotope ◽  
Maldi Mass Spectrometry ◽  
Time Dependent ◽  
Stable Isotope Tracers ◽  
Isotope Tracers

Nd isotopes and the origin of 1.9-1.7 Ga Penokean continental crust of the Lake Superior region

1989 ◽  
Vol 101 (3) ◽  
pp. 333-338 ◽  
Author(s):  
KARIN M. BAROVICH ◽  
P. JONATHAN PATCHETT ◽  
ZELL E. PETERMAN ◽  
PAUL K. SIMS
Keyword(s):  
Continental Crust ◽  
Lake Superior ◽  
Nd Isotopes

COLLISION, SLAB FAILURE MAGMATISM, CORDILLERAN BATHOLITHS AND THE ORIGIN OF CONTINENTAL CRUST

2016 ◽  
Author(s):  
Robert S. Hildebrand ◽  
◽  
Joseph B. Whalen
Keyword(s):  
Continental Crust

CONSTRUCTING CONTINENTAL CRUST: TRACKING PETROGENESIS OF GRANITIC BATHOLITHS OF THE OSLO RIFT, NORWAY

2017 ◽  
Author(s):  
Maureen Y. Haley ◽  
◽  
Claire McLeod ◽  
RJ Brydon ◽  
Amy Wolfe ◽  
...  
Keyword(s):  
Continental Crust
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