sea bottom characteristic
31Oceanic trench — Oceanic crust is formed at an oceanic ridge, while the lithosphere is subducted back into the asthenosphere at trenches. The oceanic trenches are hemispheric scale long but narrow topographic depressions of the sea floor. They are also the… …
32Goblin shark — Temporal range: 40–0 Ma …
33Sicklefin lemon shark — Conservation status …
34Carboniferous Period — Interval of geologic time 354–290 million years ago, marked by great changes in world geography. All the landmasses drew closer together as a result of tectonic plate movements. The supercontinent Gondwana occupied much of the Southern Hemisphere …
35Tuff — (from the Italian tufo ) is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. Tuff should not be confused with tufa , another type of rock. Volcanic ashThe products of a volcanic eruption are… …
36New South Greenland — Map showing Morrell s reported location of the New South Greenland coast (1823, red line), and Ross s Appearance as reported by Sir James Clark Ross in 1841. The dotted line indicates the area of Captain Johnson s 1821 voyage …
37Orogeny — Geologic provinces of the world (USGS)   Shield …
38Geography of Newfoundland and Labrador — Newfoundland and Labrador …
39Marine transgression — A marine transgression is a geologic event during which sea level rises relative to the land and the shoreline moves toward higher ground, resulting in flooding. Transgressions can be caused either by the land sinking or the ocean basins filling… …
40Transgression (geology) — A transgression is a geologic event during which sea level rises relative to the land and the shoreline moves toward higher ground, resulting in flooding.Transgressions can be caused either by the land sinking or the ocean basins filling with… …
