Results 71 to 80 of about 16,578 (144)

Petrology and petrogenesis of an intraplate alkaline lamprophyre-phonolite-carbonatite association in the Alpine Dyke Swarm, New Zealand

open access: yes, 2019
The Alpine Dyke Swarm (ADS), intruding Haast Schist in the Southern Alps, New Zealand, comprises dykes, sills and diatremes of alkaline and ultramafic lamprophyres, phonolites and carbonatites.
Alan F. Cooper (4103437)
core   +1 more source

Lithosphere architecture characterized by crust-mantle decoupling controls the formation of orogenic gold deposits. [PDF]

open access: yesNatl Sci Rev, 2023
Hou Z   +10 more
europepmc   +1 more source

Petrology and dating of the Permian lamprophyres from the Malá Fatra Mts. (Western Carpathians, Slovakia)

open access: yes, 2018
Calc–alkaline lamprophyres are known from several localities in the Malá Fatra Mountains. They form dykes (0.5–3 m) of varying degree of alteration that have intruded the surrounding granitoid rocks which are often incorporated xenoliths. Clinopyroxenes (
Vetráková Lucia   +6 more
core   +1 more source

Petrology of the Abloviak Aillikite dykes, New Québec: evidence for a Cambrian diamondiferous alkaline province in northeastern North America

open access: yes, 2000
A dozen ultramafic lamprophyre dykes have been identified in the eastern part of Ungava Bay, Québec. The dark grey dykes are composed of macrocrysts of olivine and phlogopite featuring tetraferriphlogopite rims.
Normand Goulet   +4 more
core   +1 more source

Interplay between oceanic subduction and continental collision in building continental crust. [PDF]

open access: yesNat Commun, 2022
Zhu DC   +8 more
europepmc   +1 more source

Emplacement age and PGE geochemistry of lamprophyres in the Laowangzhai gold deposit, Yunnan, SW China

open access: yes, 2001
Widely-distributed lamprophyres in the Laowangzhai gold deposit were associated closely with gold ores. Phlogopite 40Ar/39Ar dating suggests that the emplacement age of lampro-phyric magma ranges from (30.8 0.4) to (34.3 0.2) Ma, and gold ...
Xie Guanghong (ڜۻ   +7 more
core  

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