Results 41 to 50 of about 21,455 (215)

Petrogenetic processes in the ultramafic, alkaline and carbonatitic magmatism in the Kola Alkaline Province: a review

, 2005
Igneous rocks of the Devonian Kola Alkaline Carbonatite Province (KACP) in NW Russia and eastern Finland can be classified into four groups: (a) primitive mantle-derived silica-undersaturated silicate magmas; (b) evolved alkaline and nepheline syenites; (
Balaganskaya, Elena, Demaiffe, Daniel, Beard, Andrew D., Demaiffe, D., Beard, Andrew, Downes, Hilary, Balaganskaya, E., Beard, Andy, Liferovich, R., Liferovich, Ruslan   +9 more
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Magmatism of the Kenya Rift Valley : a review. [PDF]

, 2003
Tertiary–Recent magmatism in the Kenya Rift Valley was initiated c. 35 Ma, in the northern part of Kenya. Initiation of magmatism then migrated southwards, reaching northern Tanzania by 5–8 Ma.
MacDonald, Raymond
core  

The development of magmatism along the Cameroon Volcanic Line: Evidence from teleseismic receiver functions

, 2012
[1] The Cameroon Volcanic Line (CVL) in West Africa is a chain of Cenozoic volcanism with no clear age progression. The reasons for its existence are unclear, and the nature of its magmatic plumbing system is poorly understood.
Bastow, I.D., Gallacher, R.J.
core   +1 more source

Ore forming process of magmatic nickel-copper-cobalt sulfide deposits in China

Fundamental Research
The magmatic Ni-Cu-Co deposits are the main source of critical mineral resources in China, such as nickel, cobalt, and platinum group elements, which are formed generally in a continental rift setting or gravitational collapse at the end of an orogeny ...
Wenyuan Li, Yongbao Gao, Leon Bagas
doaj   +1 more source

To the problem of origin volcanoplutonic processes

Мінеральні ресурси України
In the article from the position on the Concept of the Dynamics of the Earth’s Crust Evolution (CDECE) the problems of the origin of volcanoplutonic processes and related endogenous ore formation are considered.
A. T. Akhverdiev
doaj   +1 more source

Magmatism in the Netherlands: expression of the northwest European rifting history [PDF]

The presence of igneous rocks in about 100 wells drilled for hydrocarbons, mainly concentrated in the eastern provinces of the Netherlands, the western onshore and offshore areas and in the northern offshore testify to the significance of magmatic activity in the geological history of the Netherlands. Intrusive rocks, mainly emplaced into Carboniferous
Bergen, M.J. van, Vis, G.J., Sissingh, W., Koornneef, J.M., Brouwers, I.   +4 more
openaire   +4 more sources

The break-up of continents and the formation of new ocean basins

, 2002
Rifted continental margins are the product of stretching, thinning and ultimate break-up of a continental plate into smaller fragments, and the rocks lying beneath them store a record of this rifting process.
Minshull, T.A.
core   +1 more source

Çayeli (Rize) ve İspir (Erzurum) arasında kalan alanın tektonostratigrafik özellikleri

Bulletin of the Mineral Research and Exploration, 2019
İnceleme alanı Doğu Pontidler’de Rize, Çayeli, Arhavi, İspir İkizdere arasında kalan alanı kapsamaktadır. Bu alanda Maçka Tektonik Dilimi (MTD) ve Taşköprü Tektonik Dilimi (TTD) yüzeylenmektedir. MTD yaşlıdan gence doğru; Geç Jura-Erken Kretase kireçtaşı
İsmet ALAN, Veli BALCI, Halil KESKİN, İbrahim ALTUN, Nevzat BÖKE, Hünkar DEMİRBAĞ, Sedat ARMAN, Hasan ELİBOL, Mustafa SOYAKİL, Alican Kop, Nurullah HANİLÇİ   +10 more
doaj   +1 more source

U-Pb ages of Gongga Shan granite, western Sichuan and its implication to the tectonic evolutions of eastern Tibet

Frontiers in Earth Science, 2023
The eastern margin of the Tibetan Plateau has given rise to much debate about mechanisms of plateau uplift and evolution and, in particular, the role of the lower crust in crustal thickening.
Yuan-Hsi Lee, Kristen L. Cook, Kristen L. Cook, Xi-Bin Tan, Xi-Bin Tan, Mei-Fei Chu, Han-Yi Chiu, Qui-Li Li, J. Gregory Shellnutt, Xi-Wei Xu   +9 more
doaj   +1 more source

Infinite magmatic bialgebras

Advances in Applied Mathematics, 2008
An infinite magmatic bialgebra is a vector space endowed with an n-ary operation, and an n-ary cooperation, for each n, verifying some compatibility relations. We prove a rigidity theorem, analogue to the Hopf-Borel theorem for commutative bialgebras: any connected infinite magmatic bialgebra is of the form $Mag^\infty(Prim H)$, where $Mag^\infty(V ...
openaire   +3 more sources