Results 21 to 30 of about 147 (81)

Metalogenia de las carbonatitas en dominios plutónicos, subvolcánicos y volcánicos: Tchivira, Bonga y Catanda, Angola [PDF]

, 2016
[spa] Se han seleccionado tres carbonatitas de la estructura tectónica de Lucapa en Angola representativas de diferentes niveles de emplazamiento de los magmas: plutónico (Tchivira), subvolcánico (Bonga) y volcánico (Catanda).
Bambi, Aurora Cuaiela Joao Mateus
core   +7 more sources

Archetypal kimberlite from the Maniitsoq region, southern West Greenland and analogy to South Africa [PDF]

, 2006
Ultramafic dyke rocks with kimberlitic megacrysts and mantle nodules have been known for decades from the northern part of the Archaean block and adjacent Proterozoic terranes in southern West Greenland (Fig.
Jebens, Martin, Secher, Karsten, Nielsen, Troels F D, Jensen, Sven M   +3 more
core   +1 more source

Polygenic Nature of Olivines from the Ultramafic Lamprophyres of the Terina Complex (Chadobets Upland, Siberian Platform) Based on Trace Element Composition, Crystalline, and Melt Inclusion Data

, 2021
Olivine from the deep mantle-derived rocks, such as ultramafic lamprophyres, carries important information about the composition of the mantle source, the processes of mantle metasomatism, the origin of specific silicate-carbonate melts, as well as the ...
Ilya Prokopyev, Anastasiya Starikova, Alexey Ragozin, Vasily Chervyakovsky, Anna Doroshkevich   +4 more
core   +1 more source

Craton reactivation on the Labrador Sea margins: 40Ar/39Ar age and Sr–Nd–Hf–Pb isotope constraints from alkaline and carbonatite intrusives

, 2007
The once-contiguous North Atlantic craton (NAC) is crosscut by the Labrador Sea that opened during the Early Cenozoic after extensive Mesozoic continental rifting and removal of cratonic mantle.
Foley, Stephen F., Romer, Rolf L., Kjarsgaard, Bruce A., Joyce, Nancy, Heaman, Larry M., Tappe, Sebastian, Stracke, Andreas   +6 more
core   +1 more source

Sr-Nd-Pb isotopic systematic and geochronology of ultramafic alkaline magmatism of the southwestern margin of the Siberian Craton: Metasomatism of the sub-continental lithospheric mantle related to subduction and plume events

, 2020
© 2020 To provide new insights into the origin and evolution of ultramafic lamprophyres (UMLs) and their mantle source, we examined two UML (aillikite and damtjernite) occurrences of different ages in the western portion of the Siberian Craton (Ilbokich ...
Batalin G.A., Dubinina E.O., Abersteiner A., Yudin D.S., Gareev B.I., Lebedeva N.M., Larionova Y.O., Kargin A.V., Sazonova L.V., Chugaev A.V., Nosova A.A.   +10 more
core  

Late Cretaceous ultramafic lamprophyres and carbonatites from the Delitzsch Complex, Germany

, 2013
The Delitzsch Complex consists of late Cretaceous ultramafic lamprophyres and carbonatitic rocks. They form dikes and diatremes, emplaced into Palaeozoic to lower Permian volcanic and sedimentary rocks, and are covered by up to 120 m thick sequences of ...
Kämpf, H., Romer, R.L., Krüger, J.C.
core   +1 more source

Petrology of Late Jurassic allochthonous ultramafic lamprophyres within the Batain Nappes, Northeastern Oman

, 2016
Late Jurassic ultramafic lamprophyre (UML) sills and dikes occur as 3 km-long intrusions within the allochthonous Whara Formation of the Batain nappes, eastern Oman.
S. Nasir (1385112)
core   +1 more source

Petrogenesis of juvenile pelletal lapilli in ultramafic lamprophyres. [PDF]

Sci Rep, 2023
Prokopyev I, Doroshkevich A, Starikova A, Kovalev S, Nugumanova Y, Izokh A.   +5 more
europepmc   +1 more source

Perturbation of the deep-Earth carbon cycle in response to the Cambrian Explosion. [PDF]

Sci Adv, 2022
Giuliani A, Drysdale RN, Woodhead JD, Planavsky NJ, Phillips D, Hergt J, Griffin WL, Oesch S, Dalton H, Davies GR.   +9 more
europepmc   +1 more source

Remnants of early Earth differentiation in the deepest mantle-derived lavas. [PDF]

Proc Natl Acad Sci U S A, 2021
Giuliani A, Jackson MG, Fitzpayne A, Dalton H.   +3 more
europepmc   +1 more source