Subaqueous
41Pilbara craton — The Pilbara craton (the Pilbara province in northwest Western Australia), along with the Kaapvaal craton (the Kaapvaal province of South Africa) are the only remaining areas of pristine Archaean 3.6 2.7 Ga crust on Earth. Similarities of their… …
42New Senator Caldera — Map of the Blake River Megacaldera Complex. New Senator Caldera is highlighted cyan The New Senator Caldera is a large striking Archean caldera complex within the heart of the Blake River Megacaldera Complex, Quebec, Canada. It has a diameter of… …
43Misema Caldera — Map of the Blake River Megacaldera Complex. Misema Caldera is highlighted red The Misema Caldera is a striking 2,704 2,707 million year old caldera in Ontario and Quebec, Canada. Contents …
44Gardon (poisson) — Pour les articles homonymes, voir Gardon. Gardon …
45density current — Geol., Oceanog. See turbidity current. * * * Any current in either a liquid or a gas that is kept in motion by the force of gravity acting on small differences in density. A density difference can exist between two fluids or between different… …
46Precambrian time — Interval of geologic time from с 3. 8 billion years ago, the age of the oldest known rocks, to 544 million years ago, the beginning of the Cambrian Period. This interval represents more than 80% of the geologic record and thus provides important… …
47continental 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… …
48Depth — (Roget s Thesaurus) < N PARAG:Depth >N GRP: N 1 Sgm: N 1 depth depth Sgm: N 1 deepness deepness &c. >Adj. Sgm: N 1 profundity profundity depression &c.(concavity) 252 GRP: N 2 Sgm: N 2 hollow hollow …
49shoal — 1) (noun) a) A relatively shallow place in a stream, lake, sea, or other body of water; a shallows. b) A natural, subaqueous ridge, bank, or bar consisting of, or covered by, sand or other unconsolidated material, rising from the bed… …
50submerged — adjective 1. beneath the surface of the water submerged rocks • Syn: ↑submersed, ↑underwater • Similar to: ↑subsurface 2. growing or remaining under water viewing subaqueous fauna from a glass bottomed boat …
