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They are generally brittle.
Cheyanne Tremblay
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Are rocks nears earth's surface generally brittle or ductile?
They are generally brittle.
The Earth's is ductile overall tending to flow very slowly and deform in a manner.?
The Earth's lithosphere is rigid overall, and its upper portion tends to deform in a brittle manner.
What is the hard brittle outerlayerof the earth is known as the?
It is the Earth's crust.
Would quartzite or sandstone break more easy?
A brittle material is one that fails by fracturing after only a very small amount of plastic strain has occurred. Sandstones tend to be made up of quartz and feldspars which are themselves brittle. However sandstone and many other materials are only thought of as brittle because we are used to dealing or working with them at the pressure and temperature conditions present at the Earth's surface and can actually be either brittle or ductile (significant plastic deformation can occur before ultimate rupture) depending on the temperature, confining pressure and strain rate applied to it. In general at low confining pressures and temperatures (i.e. near the Earth's surface), sandstone will fail in a brittle fashion. However as the temperature and or confining pressure increases it becomes increasingly ductile.
Why is magma stiffer than lava?
There is mostly no diffenerence in lava or magma they are pretty the same thing.
Are rocks nears earth's surface generally brittle or ductile?
They are generally brittle.
What would happen to folds in rocks below the Earth's surface if compression were applied too quickly?
They would fail in a brittle rather than ductile manner causing fracturing or faulting to occur rather than folding.
Why is the faulting most likely to occur near the earth surface and not deep within the earth?
There are two reasons. First, faulting is a form of brittle failure, which generally occurs at lower temperatures. Deep in the crust, where it is very hot, rocks tend to undergo ductile failure, deforming like taffy. Additionally, most materials resist breaking at higher overall pressure.
The Earth's is ductile overall tending to flow very slowly and deform in a manner.?
The Earth's lithosphere is rigid overall, and its upper portion tends to deform in a brittle manner.
What layer of the Earth is mostly solid rock?
The lithosphere is the physical layer of hard brittle rock. The remainder of the mantle that is not contained in the lithosphere is the layer of ductile rock.
What layer of the earth is the solid rock layer?
The lithosphere is the physical layer of hard brittle rock. The remainder of the mantle that is not contained in the lithosphere is the layer of ductile rock.
Where do faults occur on earth and why?
Faulting is a type of brittle deformation; rocks crack and then move along those cracks. Deep inside Earth rocks are hotter and softer, so they will deform in a ductile manner, stretching and flowing like taffy.
What is the state of matter in each layer of earth?
Broadly speaking the earth is solid in all layers except the outer core which is a liquid. However there are mechanical differences in the behaviour of the solid layers in that some (such as the lithosphere) are brittle whereas the asthenosphere and mesosphere are ductile.
Is quartz plastic?
No, its brittle under the stress and temperature conditions found at or near the Earth's surface. However if "stressed" it is piezoelectric.
Which layers of the earth contains rocks?
The lithosphere is where the brittle rock resides. Most of the rock of the mantle is ductile, yet solid.
Why is it that rocks near the surface of the Earth tend to be brittle while those below tend to flow rather than break?
When a rock is subjected to increasing stress it changes its shape, size or volume. This is referred to as strain. In general, rocks near the surface of the earth behave in a brittle fashion. When they are acted upon by differential stress, they tend to fracture. Rocks that are below the surface are not subjected to the different "strains" then the rocks that are at the surface.
What are Ores near earth's surface generally obtained from?
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