Results 31 to 40 of about 518 (163)
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.Abstract The cratonic lithospheric mantle records complex metasomatic processes and is frequently tapped by alkaline magmatism, offering a unique opportunity to trace the progressive evolution of the mantle. In the present contribution, we investigate a newly identified calc‐alkaline lamprophyre field from the Neoarchean Jonnagiri Schist Belt, Eastern ...
Sourav Naskar +6 more
wiley +1 more source
Геодинамика и тектонофизика, 2017 In large igneous provinces (LIP) of fold areas, granitoid rocks are dominant, while mantle-derivated rocks play a subordinate role in rock formation. If magma emissions are impulsive, it may take 25–30 million years for a LIP to form and take shape.
O. A. Gavryushkina +2 more
doaj +1 more source
IOP Conference Series: Earth and Environmental Science, 2008 Lamproites are mantle-derived ultrapotassic volcanic rocks, derived from phlogopite-bearing harzburgitic source. The origin of the metasomatism which enriched their mantle source is either an old event with a metasomatic component derived from the convecting mantle, or is a more recent introduction of an already aged metasomatic component.
Prelevic, Dejan +2 more
openaire +2 more sources
Episodic Rifting of a Large Igneous Province Concentrated Along a Microcontinent Boundary
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.Abstract Many large igneous provinces (LIPs) comprise once contiguous magmatic products that are now fragmented across multiple tectonic plates. Emplacement of these voluminous magmatic products is commonly coeval with, or shortly followed by, fragmentation into constituent domains.
Jeremy L. Asimus +11 more
wiley +1 more source
, 2013 The diamondiferous Ellendale 9 (E9) pipe is a funnel-shaped maar-diatreme volcano consisting of inward-dipping tuff sequences intruded by lamproite plugs and dykes. The host rocks for the E9 pipe are Permian sandstones. The multiple lithological contacts
McDonald, Bradley +13 more
core +1 more source
Southern Urals lamproites: the problems of terminology, age, and geodynamic interpretation
Литосфера, 2017 We have studied mineral and chemical composition of lamproites from Kalymbaevsky Complex the Middle Trias. These lamproites were developed in Magnitogorsk and Eastern-Urals megazones of the Southern Urals.
S. V. Pribavkin
doaj +2 more sources
Annals of Geophysics, 1997 The petrogenesis and time/space distribution of the magmatism associated with the formation of the Northern and Southern Tyrrhenian basins, together with the directions and ages of lithospheric extension and/or spreading north and south of the 410N ...
G. Serri
doaj +1 more source
Olivine-lamproite from Ybytyruzú Lamproite Field, Eastern Paraguay [PDF]
, 2017 En el presente trabajo se realiza la descripción de la geología, la química mineral, comentarios sobre su geoquímica y caracterización de la intrusión Yzu-4 emplazada en el Campo de rocas lamproíticas del Ybytyruzú, Paraguay Oriental.
Benitez, Pedro +6 more
core
Magmatic evolution of the Gaussberg lamproite (Antartica): volatile content and glass composition.
, 2004 The lamproite of Gaussberg is an ultrapotassic rock where leucite, olivine and clinopyroxene microphenocrysts occur in a glass-rich groundmass, containing microliths of leucite, clinopyroxene, apatite, phlogopite and rare K-richterite.
SALVIOLI MARIANI, Emma +2 more
core +1 more source
Magmatic haggertyite in olivine lamproites of the West Kimberley region, Western Australia
, 2021 We report the first occurrence of magmatic haggertyite (BaFe6Ti5MgO19) from the Miocene lamproites of the West Kimberley region of Western Australia. This contrasts with the metasomatic formation reported in an olivine lamproite host at the type locality,
Jaques, Alan Lynton +2 more
core +1 more source