Results 81 to 90 of about 2,647 (217)
Journal of Economic Geology, 2017 Introduction Study of the petrology of the ophiolites as the relics of ancient oceanic lithosphere, is a powerful tool to reconstruct Earth’s history. Mantle peridotites have mostly undergone alteration and serpentinization to some extent.
Nargess Shirdashtzadeh +2 more
doaj +1 more source
Using electromagnetic methods to map and delineate high-grade harzburgite pods within the Ni-Cu mineralised Jacomynspan ultramafic sill, Northen Cape, South Africa [PDF]
, 2016 A dissertation submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Master of Science. Johannesburg, 2016.The Jacomynspan Ni-Cu sulphide mineralisation is hosted within
Ushendibaba, Mhaka
core
Podiform Chromitites in the Sorkhband Ultramafic Complex, Southern Iran: Evidence for [PDF]
Journal of Sciences, Islamic Republic of Iran, 2008 The podiform chromitite deposits of the Ordovician Sorkhband ultramafic complex, southwestern Makran, are the largest chromitite deposits in Iran. The Sorkhband ultramafic complex comprises of a northern part of dunite, podiform chromitite, olivine ...
doaj
The Structural Geology of the Tectonized Ultramafic Suite of the Table Mountain Massif, Bay of Islands Complex, Newfoundland [PDF]
, 1982 Table Mountain is the northernmost massif in the Bay of Islands Ophiolite. It represents a continuous, approximately 7 kilometer thick, section of residual harzburgite tectonites capped by a nearly flat-lying assemblage of deformed and undeformed ...
Blake, Robert Whitney
core +1 more source
Amfibol-gazdag harzburgit xenolit fluidumzárvány vizsgálata a Stájer-medencéből
Földtani Közlöny, 2019 A Stájer-medence a Kárpát-Pannon régió nyugati szélén helyezkedik el, a Pannon-medence és a Keleti-Alpok közötti átmeneti zónában. A Stájer-medencében plio-pleisztocén alkáli bazaltok mintázták meg a medence alatti litoszféraköpenyt. A köpeny eredetű xenolitok közül ritkaságnak számító, modális metaszomatózison átesett, flogopit- és apatit-tartalmú ...
László Előd Aradi +2 more
openaire +2 more sources
Chemical Compositions of Selected Minerals within Harzburgite from the Leucite Hills, Wyoming.
, 1986 Four mineral forms within harzburgite of the Leucite Hills, Wyoming were analyzed using an electron microprobe: 1) phlogopite xenoliths 2)phlogopite crystals within vesicles 3) clinopyroxene phenocrysts 4) olivene xenoliths.
Hageman, Mark
core
Geosciences, 2019 Ultramafic magmas (MgO ≥ 18 wt%) are generally thought to be primary mantle melts formed at temperatures in excess of 1600 °C. Volatile contents are expected to be low, and accordingly, high-Mg magmas generally do not yield large explosive ...
Alessandra Correale +2 more
doaj +1 more source
International audiencePetrography and mineral chemistry of mantle xenoliths recovered from Early Miocene trachybasaltic lavas nearSabga village in northwest Cameroon reveal the complex evolution of the underlying lithospheric mantle.
Fagny Mefire, Aminatou +7 more
core +1 more source
, 2017 Uysal, Ibrahim/0000-0001-7607-2893The eastern Orhaneli ophiolite in NW Anatolia (Turkey) consists of voluminous dunite and minor harzburgite intruded by clinopyroxenite veins.
Ibrahim Uysal +14 more
core +1 more source
chromium isotopes of chromite in ophiolite
, 2019 This is the first Cr isotope data for orthopyroxene, olivine and chromite in residual harzburgite, dunite and chromitite from the mantle-crust transition zone and upper mantle parts of the Kızıldağ ophiolite, SE ...
Chen, C (via Mendeley Data) +2 more
core +2 more sources