the continental margins
1Continental crust — The thickness of the Earth s crust (km). The continental crust is the layer of igneous, sedimentary, and metamorphic rocks which form the continents and the areas of shallow seabed close to their shores, known as continental shelves. This layer… …
2Continental fragment — Continental crustal fragments, partially synonymous with microcontinents, are fragments of continents thought to have been broken off from the main continental mass forming distinct islands, possibly several hundred kilometers from their place of …
3Continental shelf — Marine habitats Anatomy of a continental shelf off the south eastern coast of the United States Littoral zone Intertidal zone …
4continental landform — ▪ geology Introduction any conspicuous topographic feature on the largest land areas of the Earth. Familiar examples are mountains (including volcanic (volcanism) cones), plateaus, and valleys. (The term landform also can be applied to… …
5continental shelf — Physical Geog. the part of a continent that is submerged in relatively shallow sea. [1940 45] * * * Broad, relatively shallow submarine platform that forms a border to a continent, typically extending from the coast to depths of 330–660 ft… …
6continental drift — Geol. the lateral movement of continents resulting from the motion of crustal plates. Cf. plate tectonics. [1925 30] * * * Large scale movements of continents over the course of geologic time. The first complete theory of continental drift was… …
7Continental margin —   Sediment   …
8Continental shelf pump — In oceanic biogeochemistry, the continental shelf pump is proposed to operate in the shallow waters of the continental shelves, acting as a mechanism to transport carbon (as either dissolved or particulate material) from surface waters to the… …
9Geology of the Iberian Peninsula — The geology of the Iberian Peninsula consists of the study of the rock formations on the Iberian Peninsula, which includes Spain, Portugal, Andorra, and Gibraltar. The peninsula contains rocks from every age from Ediacaran to Recent, and almost… …
10Geology of the Death Valley area — The exposed geology of the Death Valley area presents a diverse and complex story that includes at least 23 formations of sedimentary units, two major gaps in the geologic record called unconformities, and at least one distinct set of related… …
