Results 1 to 10 of about 235,424 (182)
Pace of passive margin tectonism revealed by U-Pb dating of fracture-filling calcite [PDF]
Nature Communications, 2022 It is thought that Atlantic style passive margins have experienced episodes of uplift and volcanism in response to changes in mantle circulation. The authors here employ U-Pb dating of calcite in faults and fractures along the eastern North American ...
William H. Amidon +4 more
doaj +2 more sources
Relict subduction initiation along a passive margin in the northwest Indian Ocean [PDF]
Nature Communications, 2019 The tectonic evolution of the Laxmi basin, in the northwest Indian Ocean, remains controversial. Here, the authors present new geochemical and seismic data which indicate the Laxmi basin formed by a subduction initiation event during the break-up of ...
Dhananjai K. Pandey +2 more
doaj +2 more sources
Kerguelen plateau : a volcanic passive margin fragment ? [PDF]
Geology, 1995 The 21-25-km-thick crust of the southern Kerguelen Plateau consists of three units: (1) a ≤ 2.3-km-thick sedimentary cover; (2) a 3-6-km-thick basaltic layer with velocities ranging from 4.5 to 6.2 km/s; and (3) a 15-17-km-thick lower crust with ...
Charvis, Philippe, Operto, S.
core +5 more sources
How Do Passive Margins Convert to Active Margins?
Geochemistry, Geophysics, GeosystemsThere has been a long debate about how passive (Atlantic‐type) margins can convert to active (Andean) margins, particularly if they can do so directly, or some other process such as an arc‐continent collision must intervene (Burke et al., 1984; Dewey ...
Timothy M. Kusky, Junpeng Wang
doaj +2 more sources
Divergent drift of Adriatic-Dinaridic and Moesian carbonate platforms during the rifting phase witnessed by triassic MVT Pb-Zn and SEDEX deposits; a metallogenic approach [PDF]
Geologia Croatica, 2016 Early-intracontinental rifting of Pangea is result of thermal doming in Uppermost Permian time giving rise to the formation of horst-graben structures, followed by slow subsidence, marine transgression and evaporate deposition.
Ladislav Palinkaš +4 more
doaj +4 more sources
Peneplains and tectonics in North-East Greenland after opening of the North-East Atlantic
GEUS Bulletin, 2021 Elevated plateaus with deeply incised valleys characterise elevated, passive continental margins (EPCMs) in all climate zones. These features are, however, a topic of debate regarding when and how the large-scale landscapes formed.
Johan M. Bonow, Peter Japsen
doaj +1 more source
Geosciences, 2022 The Pre-Caledonian margin of Baltica has been outlined as a tapering wedge with increasing magmatism towards the ocean–continent transition. It is, however, well known that margins are complex, with different and diachronous evolution along and across ...
Torgeir B. Andersen +3 more
doaj +1 more source
Tectonostratigraphic History of Mesopotamian Passive Margin during Mesozoic and Cenozoic, South Iraq. [PDF]
Kirkuk Journal of Science, 2008 Passive margin of Mesopotamian zone formed by two tectonic phases: opening and closing phases. Opening tectonic phase (Permian-Jurassic) represents the beginning of Wilson cycle. This phase includes three stages: pre-rifting, rifting and post-rifting. In
Wathiq Gh. Almutury and Maher M. Al-Asadi
doaj +1 more source
Applied Sciences, 2023 In this paper, we study the structural characteristics and sedimentary filling differences of the passive continental margin basins of East Africa and establish hydrocarbon accumulation models in different basins.
Ke Geng +7 more
doaj +1 more source
Passive margins: overview [PDF]
Geological Society, London, Petroleum Geology Conference Series, 2010 Abstract Passive margins have been the reliable, accessible mainstay of exploration success worldwide for the last 25 years, and have hosted the spectacularly fast exploitation of deepwater resources (Angola, Nigeria, Brazil, Trinidad, USA Gulf of Mexico, Egypt, Australia and India). Despite, or perhaps because of this, there is still much to
B. Levell +3 more
openaire +1 more source