Pyroxenite-rich mantle formed by recycled oceanic lithosphere: Oxygen-osmium isotope evidence from Canary Island lavas

Geology ◽  
2009 ◽  
Vol 37 (6) ◽  
pp. 555-558 ◽  
Author(s):  
James M.D. Day ◽  
D. Graham Pearson ◽  
Colin G. Macpherson ◽  
David Lowry ◽  
Juan-Carlos Carracedo
Keyword(s):  
Canary Island ◽  
Oceanic Lithosphere ◽  
Isotope Evidence ◽  
Osmium Isotope

Osmium isotope evidence for the regulation of atmospheric CO2 by continental weathering

Geology ◽  
2004 ◽  
Vol 32 (2) ◽  
pp. 157 ◽  
Author(s):  
Anthony S. Cohen ◽  
Angela L. Coe ◽  
Stephen M. Harding ◽  
Lorenz Schwark
Keyword(s):  
Atmospheric Co2 ◽  
Isotope Evidence ◽  
Continental Weathering ◽  
Osmium Isotope

Rare earth element, Sr- and Nd-isotope evidence for petrogenesis of Permian basaltic and K-rich volcanic rocks from south-west England

1986 ◽  
Vol 50 (357) ◽  
pp. 481-489 ◽  
Author(s):  
R. S. Thorpe ◽  
M. E. Cosgrove ◽  
P. W. C. van Calsteren
Keyword(s):  
High Field ◽  
Earth Element ◽  
Volcanic Rocks ◽  
Transition Element ◽  
Oceanic Lithosphere ◽  
High Field Strength ◽  
Nd Isotope ◽  
South West ◽  
Isotope Evidence ◽  
South West England

AbstractPermian basic/ultrabasic lavas from south-west England may be divided into a ‘basaltic’ and a K-rich group. Both groups have enrichment of large-ion lithophile (LIL) elements relative to high field strength (HFS) elements, and the K-rich group show large degrees of LIL enrichment (c.50–500 times primordial mantle) in association with varied transition element concentrations. Samples from both groups 87Sr/86Sri = 0.704–0.705 and 143Nd/144Ndi = 0.5123–0.5127 and plot close to the mantle array on an ɛSr−ɛNd diagram. These data are interpreted in terms of derivation of the lavas from magmas resulting from partial melting of mantle which had experienced less (for the basaltic group) or more (for the K-rich group) enrichment in LIL elements as a result of migration of mantle melts. Such enrichment accompanied or followed subduction of oceanic lithosphere below south-west England. The resultant magmas experienced fractional crystallization of olivine and pyroxene prior to eruption.

Osmium-isotope evidence for volcanism, weathering, and ocean mixing during the early Aptian OAE 1a

Geology ◽  
2012 ◽  
Vol 40 (7) ◽  
pp. 583-586 ◽  
Author(s):  
C. Bottini ◽  
A. S. Cohen ◽  
E. Erba ◽  
H. C. Jenkyns ◽  
A. L. Coe
Keyword(s):  
Ocean Mixing ◽  
Isotope Evidence ◽  
Osmium Isotope

scholarly journals Osmium isotope evidence for a large Late Triassic impact event

2013 ◽  
Vol 4 (1) ◽  
Author(s):  
Honami Sato ◽  
Tetsuji Onoue ◽  
Tatsuo Nozaki ◽  
Katsuhiko Suzuki
Keyword(s):  
Late Triassic ◽  
Impact Event ◽  
Isotope Evidence ◽  
Osmium Isotope

Osmium isotope evidence for a crustal origin of platinum group elements in the Sudbury nickel ore, Ontario, Canada

1992 ◽  
Vol 56 (9) ◽  
pp. 3531-3537 ◽  
Author(s):  
A.P Dickin ◽  
J.M Richardson ◽  
J.H Crocket ◽  
R.H McNutt ◽  
W.V Peredery
Keyword(s):  
Platinum Group Elements ◽  
Isotope Evidence ◽  
Crustal Origin ◽  
Platinum Group ◽  
Osmium Isotope

scholarly journals Osmium isotope evidence for rapid melt migration towards the Moho in the Oman ophiolite

2021 ◽  
Vol 572 ◽  
pp. 117111
Author(s):  
Delphine Klaessens ◽  
Laurie Reisberg ◽  
David Jousselin ◽  
Marguerite Godard ◽  
Claire Aupart
Keyword(s):  
Oman Ophiolite ◽  
Melt Migration ◽  
Isotope Evidence ◽  
Osmium Isotope
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