on April 17, 2022
How is schist formed?
GeologySchist typically forms during regional metamorphism accompanying the process of mountain building (orogeny) and usually reflects a medium grade of metamorphism. Schist can form from many different kinds of rocks, including sedimentary rocks such as mudstones and igneous rocks such as tuffs. What is schist and how is it formed? Schist is medium grade metamorphic
on April 17, 2022
What are the different types of mass movements and how are they described?
GeologyMass Movement Types Types Descriptions Flows occur when soil or rock acts like a liquid Slumps a slice of material that moves as one piece along a curved surface Landslides made up of unconsolidated rock; includes rockslides and avalanches Creeps material that moves slowly down gently sloping areas What are the different types of mass
on April 17, 2022
How does water cause weathering of rocks?
GeologyWater, in either liquid or solid form, is often a key agent of mechanical weathering. For instance, liquid water can seep into cracks and crevices in rock. If temperatures drop low enough, the water will freeze. When water freezes, it expands. How does water cause weathering and erosion? Water gets into cracks and joints in
on April 17, 2022
What is V shaped valley?
GeologyV-Shaped Valleys A V-shaped valley is a narrow valley with steeply sloped sides that appear similar to the letter “V” from a cross-section. They are formed by strong streams, which over time have cut down into the rock through a process called downcutting. What do you mean by V-shaped valley? BSL Geography Glossary – V-shaped
on April 17, 2022
What is ERUP?
Geology1 : to send out lava, rocks, and ash in a sudden explosion The volcano erupted. 2 : to burst out in a sudden explosion Lava erupted from the volcano. 3 : to happen, begin, or appear suddenly War erupted. What is volcanic eruption Definition? A volcanic eruption is when lava and gas are released
on April 17, 2022
What is the shape of a glacial valley?
GeologyValley glaciers carve U-shaped valleys, as opposed to the V-shaped valleys carved by rivers. During periods when Earth’s climate cools, glaciers form and begin to flow downslope. Often, they take the easiest path, occupying the low V-shaped valleys once carved by rivers. What is V-shaped valley? BSL Geography Glossary – V-shaped Valley – definition A
on April 17, 2022
Is the earth’s crust denser than the mantle?
GeologyThe crust, with an average density of around 2.6 grams per cubic centimeter (g/cm3), is less dense than the mantle (average density of approximately 3.4 g/cm3 near the surface, but more than that at depth), and so it is floating on the “plastic” mantle. Is the continental crust denser than the mantle? Both oceanic crust
on April 17, 2022
Is Basalt a natural stone?
GeologyBasalt tiles are a volcanic natural stone used in architecture for centuries. Basalt is a solid stone and offers a very homogeneous color distribution. Is basalt rock natural? Basalt is the most common volcanic rock type on Earth, making up over 90% of all volcanic rock on the planet. The crustal portions of oceanic tectonic
on April 17, 2022
What geologic features are formed through each type of plate boundaries?
GeologyDeep ocean trenches, volcanoes, island arcs, submarine mountain ranges, and fault lines are examples of features that can form along plate tectonic boundaries. Volcanoes are one kind of feature that forms along convergent plate boundaries, where two tectonic plates collide and one moves beneath the other. What geological features are created at convergent divergent and
on April 17, 2022
What is phyllite used for?
GeologyPhyllite is a foliated metamorphic rock rich in tiny sheets of sericite mica. Phyllite is a durable and soft rock and used as decorative aggregates, floor tiles, and as exterior building, or facing stone. The other uses include cemetery markers, commemorative tablets, creative artwork, and writing slates. What are the uses of metamorphic rocks? Metamorphic