Oceanic platePlate tectonicsOcean-plate tectonicsMantle convectionMid-ocean-ridgeSeafloorSubductionAs the Earth's primary mode of planetary cooling, the oceanic plate is created at mid-ocean ridges, transported across the planet's surface, and destroyed at subduction zones. The evolution of its ...
Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust. The denser plate issubducted underneath the less dense plate. The plate being forced under is eventually melted and destroyed. Island arcs and oceanic trenches occur when both of the plates are made of...
Thetheory of plate tectonicsis comprised of several hypotheses, such as continental drift andseafloor spreading. The idea that first went against the paradigm of uniformitarians was first proposed by the geologist Alfred Wegener in 1912 as thecontinental drift hypothesis. ...
Oceanic transform faults are supposed to beplate boundarieswhere crust is neither created nor destroyed, but recent mapping and sampling indicate thatmagmatismoccurs in some transform domains.Volcanismoccurs in these locales either at short, intratransform spreading centers or at localized eruptive centers...
One particularly reassuring feature is the inclusion of an automatic vacuum pump to check for potential leaks before diving, helping to prevent the terror of realising that a slightly dodgy seal has flooded the housing and destroyed its owner’s expensive pride and joy, and everything on it that...
Current descriptions of plate tectonics assume transform faults to be conservative two-dimensional strike–slip boundaries1,3, at which lithosphere is neither created nor destroyed and along which the lithosphere cools and deepens as a function of the age of the plate4. However, a recent ...
” The type series ofH. newtoniwas lost in the fire that destroyed the collections of Museu Bocage (Lisbon) in 1978. Jesus collected new material in the early 2000s and provided the first molecular data forH. newtoni(Jesus et al.2005c), noting that it was sister to “an individual ...
Many physical phenomena in the ocean involve interactions between water masses of different temperatures and salinities at boundaries. Of particular interest is the characterisation of finescale structure at the marginal interaction zones of these boundaries, where the structure is either destroyed by mix...
The imbricate stack of the Central Pontides is the result of the Jurassic-Palaeocene closure of the IPO and the subsequent collision between two continental plates, the Sakarya microplate to the south and the Eurasian plate, today represented by the Istanbul-Zonguldak terrane to the north (...
oceanic crust, the outermost layer ofEarth’slithospherethat is found under theoceansand formed atspreading centresonoceanic ridges, which occur at divergent plate boundaries. Oceanic crust is about 6 km (4 miles) thick. It is composed of several layers, not including the overlying sediment. The...