What causes a strike slip fault?
GeologyThe cause of strike-slip fault earthquakes is due to the movement of the two plates against one another and the release of built up strain. As the larger plates are pushed or pulled in different directions they build up strain against the adjacent plate until it finally fails. How is a strike-slip fault formed? Strike-slip
Why are upwellings important to ocean ecosystems?
GeologyUpwelling brings those lost/sunk nutrients back to the surface, which creates “blooms” of algae and zooplankton, which feed on those nutrients. These blooms then become feeding grounds for plankton feeders, then fish, etc, sustaining ocean life that lives near the surface. What do upwellings bring to the surface of the ocean? Upwelling occurs when surface
What landforms do continental glaciers create?
GeologyGlacier Landforms U-Shaped Valleys, Fjords, and Hanging Valleys. Glaciers carve a set of distinctive, steep-walled, flat-bottomed valleys. … Cirques. … Nunataks, Arêtes, and Horns. … Lateral and Medial Moraines. … Terminal and Recessional Moraines. … Glacial Till and Glacial Flour. … Glacial Erratics. … Glacial Striations. What do continental glaciers create? The formation of continental
How are metamorphic rocks formed give two examples?
GeologyAnswer: They may be formed simply by being deep beneath the Earth’s surface, subjected to high temperatures and the great pressure of the rock layers above it. … Some examples of metamorphic rocks are gneiss, slate, marble, schist, and quartzite. What are metamorphic give two examples? Examples of metamorphic rocks include anthracite, quartzite, marble, slate,
What is the substrate of soft bottom communities on continental shelves?
GeologySoft-bottom communities occur in areas with weak currents. The seabed consists of fine sediments (fine sand, silt, mud). This is a suitable habitat for burrowing organisms like polychaete worms, amphipods and bivalves. Most of these organisms are deposit-feeders, feeding on particles of organic matter in the sediment. What types of substrate dominates the continental shelf?
Which rock is formed as a result of the three stages?
GeologyWhat are the 3 stages of rocks? There are three main types of rocks: sedimentary, igneous, and metamorphic. Each of these rocks are formed by physical changes—such as melting, cooling, eroding, compacting, or deforming—that are part of the rock cycle. What are the three 3 main rocks that soils are formed from? The three major
Which mineral will not scratch quartz?
GeologyDiamond is the hardest mineral; no other mineral can scratch a diamond. Quartz is a 7.…Mohs Hardness Scale. Hardness Mineral 10 Diamond Can you scratch quartz crystal? Quartz is harder than any of the common minerals in meteorites. Quartz is so hard that it will easily make a deep scratch in glass. Even if you
What is in glacial rock dust?
GeologyThis mixed pile of rocks is where glacial rock dust comes from. Made of a wide variety of rocks, it contains a complex blend of minerals. It is particularly good for adding calcium, iron, magnesium, and potassium. It also contains some manganese, cobalt, silicon, and small amounts of other minerals as well.Nov 14, 2018 Is
What would decrease the competence of a stream?
GeologyWhat affects stream competence? Stream capacity is the maximum amount of solid load (bed and suspended) a stream can carry. It depends on both the discharge and the velocity (since velocity affects the competence and therefore the range of particle sizes that may be transported). What decreases stream competence? Vegetation has a known impact on
How can ocean basins change in size?
GeologyThe major factor behind the variations is plate movements and related changes in climate and ocean water circulation. Since about 200 million years ago, a single vast ocean basin has given way to five or six smaller ones. The Pacific Ocean basin has shrunk, while the North and South Atlantic basins have been created. How