on April 16, 2022
What is andesitic magma?
GeologyAndesite magma commonly erupts from stratovolcanoes as thick lava flows, some reaching several km in length. Andesite magma can also generate strong explosive eruptions to form pyroclastic flows and surges and enormous eruption columns. Andesites erupt at temperatures between 900 and 1100 ° C. What are the characteristics of andesitic magma? It ranges in temperature
on April 16, 2022
Can you feel earthquake while driving?
GeologyYou can feel an earthquake while driving. According to people who have experienced an earthquake behind the wheel, it feels like a jolt followed by shaking, and it makes driving in a straight line nearly impossible. Can you feel an earthquake when you’re driving? How do you tell if an earthquake is happening while you
on April 16, 2022
What is mountain and its types?
GeologyThere are five main types of mountains: volcanic, fold, plateau, fault-block and dome. A more detailed classification useful on a local scale predates plate tectonics and adds to these categories. What defines a mountain? Most geologists classify a mountain as a landform that rises at least 1,000 feet (300 meters) or more above its surrounding
on April 16, 2022
What type of rock is Granulite?
GeologyTo the German petrologists granulite means a more or less banded fine-grained metamorphic rock, consisting mainly of quartz and feldspar in very small irregular crystals and usually also containing a fair number of minute, rounded, pale-red garnets. Is granulite metamorphic? granulite facies, one of the major divisions of the mineral facies classification of metamorphic rocks,
on April 16, 2022
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
on April 16, 2022
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
on April 16, 2022
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
on April 16, 2022
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,
on April 16, 2022
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?
on April 16, 2022
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