overlying rock वाक्य
उदाहरण वाक्य
मोबाइल
- A small cavern begins to form at the base of the Falls, and the overlying rock loses its support and collapses.
- As material continues to rise, it forms a large pool of melted basalt under the crust and slowly melts the overlying rock.
- Collision of this Archean intruded into the overlying rocks 1830 million years ago,; these plutons mark the end of the Penokean orogeny.
- As the overlying rock was worn away, pressure was relieved and horizontal cracks developed, allowing water to get into the rock layers.
- By pushing upward and piercing overlying rock layers, diapirs can form anticlines, salt domes and other structures capable of trapping petroleum and natural gas.
- Towards the end of this period granite was formed beneath the overlying rocks of Devon and Cornwall, now exposed at Dartmoor and Bodmin Moor.
- This is referred to as hypogenic karstification . From time to time, overlying rock collapsed into hollow chambers below, creating deep shafts.
- With the loss of the confining pressure of the overlying rock, Mount St . Helens began to rapidly emit steam and other volcanic gases.
- The kinds and amounts of overlying rock indicate that the crater, about 12 miles in diameter, was formed 60 million to 65 million years ago.
- One theory was the upheaval is a salt dome, an anticlinal structure which occurs when a salt diapir is pushed up by the weight of overlying rocks.
- The coal is typically soft bituminous coal, since it has never been compressed by overlying rocks to the degree that would be required to form harder coal.
- Rock units are first emplaced either by deposition onto the surface or intrusion into the sills, push upwards into the overlying rock, and crystallize as they intrude.
- Where & rho; ( z ) is the density of the overlying rock at depth z and g is the datum pressure, the pressure at the surface.
- The caldera has the classic circular shape : the depression formed as overlying rock and soil collapsed into the magma chamber after it was emptied by powerful eruptions.
- The 4-billion-year-old lakebed rock drilled by " Curiosity " was uncovered between 30 million and 110 million years ago by winds which sandblasted away 2 meters of overlying rock.
- The eruption of such a huge quantity of magma emptied the magma chamber beneath the volcano and led to the collapse of the overlying rocks to form the caldera.
- Because sills generally form at shallow depths ( up to many kilometers ) below the surface, the pressure of overlying rock prevents this from happening much, if at all.
- There seems to be some disagreement on where to place the boundary between basement rocks and overlying rocks, and the decision seems to be based on the degree of induration.
- Salt domes are vertical diapirs or pipe-like masses of salt that have been essentially " squeezed up " from underlying salt beds by mobilization due to the weight of overlying rock.
- Diapirs commonly intrude vertically upward along fractures or zones of structural weakness through denser overlying rocks because of density contrast between a less dense, lower rock mass and overlying denser rocks.
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