Results 71 to 80 of about 10,467 (267)

Mantle metasomatism influence on water contents in continental lithosphere: new constraints from garnet pyroxenite xenoliths (France & Cameroon volcanic provinces) [PDF]

, 2021
Samantha Azevedo‐Vannson, Lydéric France, Jannick Ingrin, Gilles Chazot   +3 more
openalex   +1 more source

Alkali‐halogen metasomatism of the CM carbonaceous chondrites

Meteoritics and Planetary Science, 2019
Meteorite Hills (MET) 01075 is unique among the CM carbonaceous chondrites in containing the feldspathoid mineral sodalite, and hence it may provide valuable evidence for a nebular or parent body process that has not been previously recorded by this ...
Martin R Lee, B. E. Cohen, A. King
semanticscholar   +1 more source

Lamprophyres of the Peshchernoe gold deposit, their geological position, material composition, and metasomatic alterations (Northern Urals)

Записки Горного института
The article presents the first data on biotite-hornblende lamprophyres discovered at the Peshchernoe gold deposit. We consider the geological position of lamprophyre dikes in the deposit structure and the relationship of these rocks with tectonically ...
Dmitrii V. Kuznetsov, Sergei Yu. Stepanov, Andrei V. Butnyakov, Viktoriya S. Igosheva   +3 more
doaj  

Water and Oxygen Fugacity in the Lithospheric Mantle Wedge beneath the Northern Canadian Cordillera (Alligator Lake)

Geochemistry, Geophysics, Geosystems, 2018
Assessing water contents of subduction zone mantle peridotites can gain insight into the compositions of slab‐derived fluids/melts and the active margin water cycle.
McKensie L. Kilgore, Anne H. Peslier, Alan D. Brandon, William M. Lamb   +3 more
doaj   +1 more source

Carbonatite metasomatism, the key to unlocking the carbonatite-phoscorite-ultramafic rock paradox

Chemical Geology, 2022
O. Vasyukova, A. Williams-Jones
semanticscholar   +1 more source

The Lages diatremes: mineral composition and petrological implications

Anais da Academia Brasileira de Ciências, 2007
Chemical data of heavy minerals from Lages diatremes in southern Brazil have been studied with the aim of characterizing the sample source(s). Three groups of minerals are recognized: I) aluminian-chromian pyroxene, pyrope garnet and chromian spinel ...
Giancarlo Barabino, Celso B. Gomes, Gianbosco Traversa   +2 more
doaj   +1 more source

Low-T sheared peridotites from the Kaapvaal-craton: Record of hydrous metasomatism during deformation [PDF]

, 2023
Catharina Heckel, Anthony C. Withers, Alan B. Woodland, Sally Gibson, Thomas Ludwig   +4 more
openalex   +1 more source

Lithospheric Architecture and Mantle Metasomatism Linked to Iron Oxide Cu‐Au Ore Formation: Multidisciplinary Evidence from the Olympic Dam Region, South Australia

Geochemistry Geophysics Geosystems, 2018
The role of lithospheric architecture and the mantle in the genesis of iron oxide copper‐gold (IOCG) deposits is controversial. Using the example of the Precambrian Gawler Craton (South Australia), which hosts the giant Olympic Dam IOCG deposit, we ...
R. Skirrow, S. V. D. Wielen, D. Champion, K. Czarnota, S. Thiel   +4 more
semanticscholar   +1 more source

AMPHIBOLE-PHLOGOPITE XENOLITHS FROM KIMBERLITES AS EVIDENCE OF METASOMATIC PROCESSES IN THE LITHOSPHERIC MANTLE BENEATH KUOIKA FIELD

Геодинамика и тектонофизика
This paper devoted to the mantle xenoliths with evidence of modal metasomatic alteration from the Obnazhennaya kimberlite pipe (Kuoika kimberlite field).
T. V. Kalashnikova, S. I. Kostrovitsky, A. M. Dymshits   +2 more
doaj   +1 more source

Sr-Nd-Pb Isotopic Compositions of Peridotite Xenoliths from Spitsbergen: Numerical Modelling Indicates Sr-Nd Decoupling in the Mantle by Melt Percolation Metasomatism [PDF]

, 2002
Dmitri A. Ionov
openalex   +1 more source