on April 9, 2022
Why are some continental margins active and others passive?
Regional SpecificsThe distinction between active and passive margins refers to whether a crustal boundary between oceanic lithosphere and continental lithosphere is a plate boundary. Active margins are found on the edge of a continent where subduction occurs. Why are continental margins passive? The continents moved away from one another as parts of different tectonic plates. The
on April 9, 2022
What is conservative margin?
Regional SpecificsA conservative (passive or transform as it is also known) plate margin involves two tectonic plates sliding past each other. The plates do not pass each other smoothly. Friction causes them to get stuck. Over time pressure builds up until the friction is overcome which results in the plates slipping. What does conservative margin mean?
on April 9, 2022
Who first presented the periglacial cycle of erosion?
Regional SpecificsIn 1950 L.C Peltier put forward the concept of a periglacial cycle of erosion. Who propounded glacial cycle of erosion? William Morris Davis However the immediate influences of William Morris Davis, the creator of the cycle of erosion model, were 19th century American explorers. Who was the first to give the idea of cycle of
on April 9, 2022
Why is sequence stratigraphy important?
Regional SpecificsSequence stratigraphy can be used to develop more accurate surfaces for mapping and correlating facies; predict reservoir, source and sealing facies; identify stratigraphic traps; and project reservoir trends into areas with limited data. Why principles of stratigraphy is important? stratigraphy, scientific discipline concerned with the description of rock successions and their interpretation in terms of
on April 9, 2022
What is the density of the mantle?
Regional Specifics3“>4.5 g/cm34.5 g/cm3, and temperatures in the range of 1000-1500 oC. The uppermost layer of the mantle is more rigid, while the deeper regions are fluid, and it is the motion of fluid materials in the mantle that is responsible for plate tectonics (see section 4.3). What is the average density of the lower mantle?
on April 9, 2022
What is a reverse earthquake?
Regional SpecificsIf the rock mass above an inclined fault moves down, the fault is termed normal, whereas if the rock above the fault moves up, the fault is termed reverse. What is the meaning of reverse in earthquake? How does a reverse fault move? In a reverse fault, the block above the fault moves up relative