Results 81 to 90 of about 22,040 (302)

Back-reacted saponite in Jurassic mudstones and limestones intruded by a Tertiary sill, Isle of Skye [PDF]

, 2005
The Lón Ostatoin stream section, Trotternish Peninsula, Isle of Skye, exposes a sequence of Middle Jurassic mudstones and limestones which have been locally metasomatized by a transgressive sill of Tertiary age. Limestones in the sequence, including some
Alt, Barton, Brown, C. A. Rochelle, Deer, Emeleus, Guven, Hoffman, Hudson, Hudson, Hudson, Iijima, Inglethorpe, Kerrick, Kuchta, Merriman, Merriman, Merriman, Moore, Perrin, R. J. Merriman, Richey, S. J. Kemp, Thrasher, Tracy   +24 more
core   +2 more sources

Carbonatite metasomatism overprinted by silicate melt metasomatism in the mantle beneath the West Eifel volcanic field [PDF]

European Journal of Mineralogy
The texture and mineral compositions of mantle xenoliths from the West Eifel volcanic field (WEVF) reveal three distinct mantle events. The first, identified in LREE-depleted and isotopically depleted anhydrous (type Ib) xenoliths, resulted from partial ...
B. E. Bromley, S. Ma, S. Ma, C. S. J. Shaw   +3 more
doaj   +1 more source

The campsite dykes: A window into the early post-solidification history of the Skaergaard Intrusion, East Greenland [PDF]

, 2016
publication-status: Publishedtypes: ArticleThis is an open access article.The Skaergaard Intrusion of East Greenland is cut by several generations of dykes, the earliest of which is thought to have intruded shortly after solidification of the Skaergaard.
Andersen, JCO, Holness, MB, Richardson, C   +2 more
core   +1 more source

Metasomatism and Melting of Cordilleran Lithosphere Resulting From Sediment Relamination During Shallow Subduction

Geochemistry, Geophysics, Geosystems
Mantle xenoliths recovered from the modern backarc region of the northern Altiplano Plateau record metasomatism by slab‐derived silicic melts, and a suite of Quaternary volcanics suggest that melting of accreted crustal material has persisted since ...
C. D. Hiett, D. L. Newell, J. W. Shervais   +2 more
doaj   +1 more source

CARBONIFEROUS 40Ar/39Ar AGE OF THE RARE METAL-ENRICHED RHYOLITES AND IGNIMBRITES IN THE SAKMARA ALLOCHTHON OF THE SOUTHERN URALS, THEIR GEOCHEMICAL FEATURES AND GEODYNAMIC SETTING

Известия высших учебных заведений: Геология и разведка, 2018
In the structure of the Sakmara allochthon of the Southern Uralssequence with rhyolites and ignimbrites locally occures. They have Nb-Zr-REE geochemical specialization.
A. V. Ryazantsev, A. V. Pilitsina, I. A. Novikov, K. E. Degtyarev   +3 more
doaj   +1 more source

Crustal Architecture of the Snake River Plain, Idaho, Through Geochemical Investigation of Crustal Sill and Shallow Subvolcanic Xenoliths

, 2021
Douglas J. Jones
openalex   +2 more sources

A major element, PGE and Re-Os isotope study of Middle Atlas (Morocco) peridotite xenoliths : evidence for coupled introduction of metasomatic sulphides and clinopyroxene [PDF]

, 2010
We present major element and PGE (platinum-group-element) abundances in addition to Re–Os isotope data for 11 spinel-facies whole rock peridotites from a single maar from the Middle Atlas Mountains, Morocco.
Baker, Joel A., Duggen, Svend, Hoernle, Kaj, Pearson, D. Graham, Wittig, Nadine   +4 more
core   +1 more source

Lithospheric Mantle Evolution beneath the Eifel (Germany): Constraints from Sr-Nd-Pb Isotopes and Trace Element Abundances in Spinel Peridotite and Pyroxenite Xenoliths [PDF]

, 2003
G. Witt-Eickschen
openalex   +1 more source

Sub-Zero Alteration in an Isotopically Heavy Brine Preserved in a Pristine H Chondrite Xenolith [PDF]

Introduction: Brecciated H chondrites host a variety of xenoliths, including unshocked, phyllo- silicate-rich carbonaceous chondrites (CCs). The brecciated H chondrite Zag (H3-6) is one of two chondrites to host macroscopic (1 - 5mm), xenolithic crystals
Frank, D. R., Huss, G. R., Nagashima, K., Zolensky, M. E.   +3 more
core   +1 more source

Highly depleted cratonic mantle in West Greenland extending into diamond stability field in the Proterozoic [PDF]

, 2013
This study presents electron microprobe data for dunite xenoliths from a lamprophyre dyke located on the island of Qeqertaa, West Greenland. The minimum age of this dyke is Palaeoproterozoic and it experienced amphibolite facies metamorphism and ...
Bernstein, Stefan, Kelemen, Peter B., Szilas, Kristoffer   +2 more
core   +2 more sources