Results 81 to 90 of about 1,332 (160)

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

open access: yesSci Rep, 2023
Prokopyev I   +5 more
europepmc   +1 more source

Structural controls of kimberlite and lamproite emplacement

open access: yesJournal of Geochemical Exploration, 1995
Abstract In this article we review the regional and local structural controls on the emplacement, in the crustal environment, of kimberlites and lamproites after the generation of the magmas at depth. We find that there is good evidence that they are related to major deep faults or shears (mobile zones) that traverse the entire crust and may even ...
S.H. White, H. de Boorder, C.B. Smith
openaire   +2 more sources

ヒガシ ナンキョク ナピア オヨビ レイナー ガンタイ ニオケル ニホン ナンキョク チイキ カンソクタイ チシツ グループ ノ カツドウ セイカ ノ ソウカツ ト コンゴ ノ カダイ [PDF]

open access: yes, 2003
東南極エンダビーランドに分布するナピア及びレイナー岩体を対象とした,日本南極地域観測隊地質グループによるこれまでの調査研究の成果として,1)野外調査による詳細な地質図の公表,2)ナピア岩体の原岩構成と形成年代の特定,3)超高温変成作用の変成条件と年代の精密解析,及び4)苦鉄質岩脈群の区分と活動時期の特定,の4項目について紹介した.これらの成果を踏まえた今後の同岩体の調査研究課題として,1)ナピア及びレイナー岩体のテクトニクスの解明: 新しい視点による広域調査の重要性,2)太古代大陸地殻の形成過程の解明 ...
Hideo Ishizuka, 石塚 英男
core   +1 more source

The petrogenesis of Liberian diamondiferous rocks, Man Craton, West Africa [PDF]

open access: yes, 2023
Kimberlites and lamproites are ultramafic igneous rocks believed to originate from the convective asthenosphere and sub-continental lithospheric mantle, respectively, however, the genetic link between these rock types is still a debate among researchers.
Ndimande, Njabulo
core   +1 more source

Diamond preservation in the lithospheric mantle recorded by olivine in kimberlites. [PDF]

open access: yesNat Commun, 2023
Giuliani A   +8 more
europepmc   +1 more source

Tertiary magmatism within the Republic of Macedonia: a review [PDF]

open access: yes, 2001
Widespread Tertiary magmatism of both orogenic and within-plate signatures developed within the Macedonian part of the Dinarides. Orogenic magmatites (predominantly volcanic rocks) are present in 5 areas (from east to west): Osogovo-Besna Kobila ...
Boev, Blazo, Yanev, Yotzo
core  

Placer Gold Prospecting Around the Tertiary Occurrences in the Republic of Macedonia [PDF]

open access: yes, 2012
Еxploration of gold as a mineral resource in Macedonia has a long history. There are more than 30 occurrences, but now gold is obtained only from the Buchim mine (Bogoevski, K., 1998).
Serafimovski, Todor   +2 more
core  

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