Results 31 to 40 of about 39,354 (271)

Provenance Response to Rifting and Separation at the Jan Mayen Microcontinent Margin

Geosciences, 2022
The Eocene-Miocene successions recovered at DSDP sites on the Jan Mayen Ridge (NE Atlantic) and on the adjacent East Greenland margin provide a sedimentary record of the rifting and separation of the Jan Mayen Microcontinent from East Greenland.
Andrew Morton, David W. Jolley, Adam G. Szulc, Andrew G. Whitham, Dominic P. Strogen, C. Mark Fanning, Sidney R. Hemming   +6 more
doaj   +1 more source

Mesozoic lithofacies palaeogeography and petroleum prospectivity in North Carnarvon Basin, Australia

Journal of Palaeogeography, 2013
The North Carnarvon Basin, which lies in the North West Shelf of Australia, is highly rich in gas resources. As a typical passive marginal basin, it experienced the pre-rifting, early rifting, main rifting, late rifting, post-rifting sagging and passive ...
Tao Chongzhi, Bai Guoping, Liu Junlan, Deng Chao, Lu Xiaoxin, Liu Houwu, Wang Dapeng   +6 more
doaj   +1 more source

Komatiitic explosive volcanism and its tectonic setting in Finland, the Fennoscandian (Baltic) Shield [PDF]

Bulletin of the Geological Society of Finland, 1990
The variously explosive komatiitic volcanism in Finland was virtually confined to the Archaean continental segment, where it occurred in the Lapland and Kuhmo‒ Suomussalmi greenstone belts between 3.0 Ga and 2.5 Ga, in the continental borderland at 1.97 ...
M. Saverikko
doaj   +1 more source

Mantle Deformation Processes During the Rift‐To‐Drift Transition at Magma‐Poor Margins

Geochemistry, Geophysics, Geosystems, 2023
The rift‐to‐drift transition at rifted margins is an area of active investigation due to an incomplete understanding of the spatial and temporal evolution of physical and chemical processes at the ocean‐continent transition (OCT).
Nicholas J. Montiel, Emmanuel Masini, Luc Lavier, Othmar Müntener, Sylvain Calassou   +4 more
doaj   +1 more source

Rifting and arc-related early Paleozoic volcanism along the North Gondwana margin: geochemical and geological evidence from Sardinia (Italy) [PDF]

, 2012
Three series of volcanic rocks accumulated during the Cambrian to Silurian in the metasediment-dominated Variscan basement of Sardinia. They provide a record of the changing geodynamic setting of the North Gondwana margin between Upper Cambrian and ...
BUZZI L, FUNEDDA A., GAGGERO L, OGGIANO G   +3 more
core   +1 more source

Revisiting the Australian‐Antarctic Ocean‐Continent Transition Zone Using Petrological and Geophysical Characterization of Exhumed Subcontinental Mantle

Geochemistry, Geophysics, Geosystems, 2020
The final lithospheric breakup of the Australian‐Antarctic rift system remains controversial due to sparse geological constraints on the nature of the basement along the ocean‐continent transition (OCT) zones.
A. McCarthy, T. J. Falloon, I. Sauermilch, J. M. Whittaker, K. Niida, D. H. Green   +5 more
doaj   +1 more source

Exploring Best Practices in Geoscience Education: Adapting a Video/Animation on Continental Rifting for Upper-Division Students to a Lower-Division Audience

Geosciences, 2021
Well-crafted and scientifically accurate videos and animations can be effective ways to teach dynamic Earth processes such as continental rifting, both in live course offerings as well as in online settings.
Siloa Willis, Robert J. Stern, Jeffrey Ryan, Christy Bebeau   +3 more
doaj   +1 more source

Lithospheric controls on melt production during continental breakup at slow rates of extension: Application to the North Atlantic

, 2009
Rifted margins form from extension and breakup of the continentallithosphere. If this extension is coeval with a region of hotter lithosphere,then it is generally assumed that a volcanic margin would follow.
Armitage, J.J., Henstock, T.J., Hopper, J.R., Minshull, T.A.   +3 more
core   +1 more source

Contrasting stress fields on correlating margins of the South Atlantic [PDF]

, 2015
The “passiveness” of passive continental margins across the globe is currently under debate since several studies have shown that these margins may experience a variety of stress states and undergo significant vertical movement post-breakup.
Glasmacher, Ulrich Anton, Hackspacher, Christian Peter, Koehn, Daniel, Passcier, Cees, Salomon, Eric   +4 more
core   +1 more source

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