Journal ArticleDOI
The Terceira Rift as hyper-slow, hotspot-dominated oblique spreading axis: A comparison with other slow-spreading plate boundaries
Peter R. Vogt,W.Y Jung +1 more
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TLDR
The Terceira Rift (TR, Azores Plateau) as mentioned in this paper is the world's slowest-spreading plate boundary, with a relative velocity of 2.3-3.8 mm/a.About:
This article is published in Earth and Planetary Science Letters.The article was published on 2004-01-30. It has received 149 citations till now. The article focuses on the topics: Rift & Rift valley.read more
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Journal ArticleDOI
Geologically current plate motions
TL;DR: MORVEL as discussed by the authors is a new closure-enforced set of angular velocities for the geologically current motions of 25 tectonic plates that collectively occupy 97 per cent of Earth's surface.
Journal ArticleDOI
The angular velocities of the plates and the velocity of Earth's centre from space geodesy
Donald F. Argus,Richard G. Gordon,Michael Heflin,Chopo Ma,Richard J. Eanes,Pascal Willis,Pascal Willis,W. Richard Peltier,Susan Owen +8 more
TL;DR: In this article, a set of relative plate angular velocities, called GEODVEL (for GEODesy VELocity) is presented, which is based on the estimation of the position of the Earth's center and the assignment of sites to plates.
Journal ArticleDOI
Soil CO2 emissions at Furnas volcano, São Miguel Island, Azores archipelago: Volcano monitoring perspectives, geomorphologic studies, and land use planning application
Fátima Viveiros,Carlo Cardellini,Teresa Ferreira,Stefano Caliro,Giovanni Chiodini,Catarina Silva +5 more
TL;DR: In this paper, the authors present a method to detect the presence of anomalous anomalies in the Earth's magnetic field using the Journal of Geophysical Research (JGRS).
Journal ArticleDOI
Magma genesis by rifting of oceanic lithosphere above anomalous mantle: Terceira Rift, Azores
TL;DR: The Terceira Rift formed relatively recently (∼1 Ma ago) by rifting of the old oceanic lithosphere of the Azores Plateau and is currently spreading at a rate of 2-4mm/a as discussed by the authors.
Journal ArticleDOI
Magma Evolution of the Sete Cidades Volcano, Sao Miguel, Azores
TL;DR: The Sete Cidades volcano (Sao Miguel, Azores) is situated at the eastern end of the ultralow spreading Terceira rift axis as mentioned in this paper, and it is composed of several dominantly basaltic pre-caldera eruptions, a trachytic caldera-forming stage and a post-aldera stage consisting of alternating trachyitic and basaltitic eruptions.
References
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Journal ArticleDOI
Global Sea Floor Topography from Satellite Altimetry and Ship Depth Soundings
TL;DR: In this paper, a digital bathymetric map of the oceans with a horizontal resolution of 1 to 12 kilometers was derived by combining available depth soundings with high-resolution marine gravity information from the Geosat and ERS-1 spacecraft.
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Effect of recent revisions to the geomagnetic reversal time scale on estimates of current plate motions
TL;DR: In this article, the optimal recalibration of NUVEL-1 is proposed to multiply the angular velocities by a constant, α, of 0.9562, which is a compromise among slightly different calibrations appropriate for slow, medium, and fast rates of seafloor spreading.
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Marine gravity anomaly from Geosat and ERS 1 satellite altimetry
TL;DR: In this article, a combination of high-density data from the dense mapping phases of Geosat and ERS 1 along with lower-density but higher-accuracy profiles from their repeat orbit phases is used to construct gravity anomalies from the two vertical deflection grids.
BookDOI
The Ocean basins and margins
TL;DR: The Tethys: An Ocean Broken by Seuils Lithospherique (B.J. Jaillard et al., this article ) is an ocean broken by seuils in the Tethyan Ocean, and the role of tethys in the evolution of the Northern Andes between Late Permian and Late Eocene times.
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Young tracks of hotspots and current plate velocities
Alice E. Gripp,Richard G. Gordon +1 more
TL;DR: In this paper, the authors investigated plate motions relative to the hotspots over the past 4 to 7 Myr with a goal of determining the shortest time interval over which reliable volcanic propagation rates and segment trends can be estimated.