Results 91 to 100 of about 24,581 (234)

Cyclic growth in Atlantic region continental crust [PDF]

Atlantic region continental crust evolved in successive stages under the influence of regular, approximately 400 Ma-long tectonic cycles. Data point to a variety of operative tectonic processes ranging from widespread ocean floor consumption (Wilson ...
Goodwin, A. M.
core   +1 more source

Precambrian isotopic sources of the Anti-Atlas, Morocco [PDF]

, 2016
The isotopic data stored in detrital and magmatic zircons are crucial for assessing magma sources, terrane correlation, paleogeography and plate reconstructions.
Abati, Jacobo, Aghzer, A. M., Ennih, N., Gerdes, A.   +3 more
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Asymmetric continental deformation during South Atlantic rifting along southern Brazil and Namibia [PDF]

, 2017
Plate restoration of South America and Africa to their pre-breakup position faces the problem of gaps and overlaps between the continents, an issue commonly solved with implementing intra-plate deformation zones within South America.
Koehn, Daniel, Passchier, Cees, Salomon, Eric   +2 more
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Provenance, paleoweathering and maturity study of shales in the Mundeck Formation of Kribi-Campo sub-basin in the western African margin (A geochemical approach)

Evolving Earth
The geochemical investigation of shales from Mundeck Formation of the Kribi-Campo sub-basin was conducted to determine the origin, tectonic setting evolution, paleo-weathering conditions, sediment maturity and cycling.
Ashukem Ethel Nkongho, Bokanda Ekoko Eric, Bisse Salomon Betrant, Kwankam Florence Njinto, Philip Fralick, Ikose Franklin, Nzesseu Valentino, Belinga Belinga Cedric, Ekomane Emile   +8 more
doaj   +1 more source

Geotouristic features of Mongo and vicinities (Guera, Chad): case of granite geomorphosites

Discover Geoscience
The Republic of Chad is located in a wide Pan-African unstable setting that has been established through the Pan-African orogeny from 750 to 550 Ma.
Ghislain Zangmo Tefogoum, Zenias Rondouba Yanhdet, Merlin Gountié Dedzo, Hyacinthe Zouyane Nouhou Dama, Irène Mafo Dongmo   +4 more
doaj   +1 more source

The petrography, metamorphism and deformation history of Neoproterozoic rock from Gida Ayana, Western Ethiopia: implication of tectonometamorphic evolution

Frontiers in Earth Science
The geological study of basement rocks in the Gida Ayana area of western Ethiopia has revealed significant findings regarding the local petrography, metamorphism, and deformation history.
Bishaw Mihret, Ajebush Wuletaw
doaj   +1 more source

Illite crystallinity patterns in the Anti-Atlas of Morocco [PDF]

, 2018
The low-grade metamorphism of the sedimentary cover of the Moroccan Anti-Atlas is investigated using Illite crystallinity (IC) method. More than 200 samples from three key areas (southwestern, central and eastern Anti-Atlas) have been taken from a ...
Adatte, Thierry, Burkhard, Martin, Helg, Urs, Negro, François, Ruiz, Geoffrey   +4 more
core  

Wilson study cycles: Research relative to ocean geodynamic cycles [PDF]

The effects of conversion of Atlantic (rifted) margins to convergent plate boundaries; oceanic plateaus at subduction zones; continental collision and tectonic escape; southern Africa rifts; and global hot spot distribution on long term development of ...
Kidd, W. S. F.
core   +1 more source

Age of the granulitic metamorphism of the Nyong complex in the west border of Congo Craton, South Cameroon

Discover Geoscience
Pressure and temperature conditions and electron microprobe analysis dating on monazite were conducted to investigate the age of the tectono-metamorphic events of Nyong Complex.
Ndema Mbongué Jean-Lavenir, Nzenti Jean Paul, Cheo Emmanuel Suh, Sigue Cyrille   +3 more
doaj   +1 more source

Provenance of the Variscan Upper Allochthon (Cabo Ortegal complex, NW Iberian Massif) [PDF]

, 2016
The NW Iberian Massif shows very good exposures and complete sections of the Variscan orogeny of Western Europe. Located above ophiolitic units which outline the Variscan suture, the Upper Allochthon (Upper Units) of the NW Iberian allochthonous ...
Albert, Richard, Arenas, Ricardo, Fernández-Suárez, Javier, Fuenlabrada, J.M., Gerdes, A., Sánchez-Martínez, S.   +5 more
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