What is flexural isostasy? How is flexural isostasy different from the Pratt and Airy models? Use flexural isostasy to explain glacial rebound
What will be an ideal response?
Flexural isostasy describes the bending of a strong crust above a high-viscosity mantle. The Pratt and Airy models assume the crust is weak, with a low-viscosity mantle, so once glacier ice melts, the crust quickly responds. Glaciers are good examples of isostatic adjustment. The glacier adds mass, which causes subsidence of the crust below the mass, and mantle flowing away from the depression causes a small bulge adjacent to the region of subsidence. Melting removes mass and the crust returns to approximate its pre- glaciated position.
You might also like to view...
The seasonal migration of the subtropical high and seasonal circulations associated with monsoons cause the ________ biome to exist in California and India.
A) subtropical scrub and woodland B) grassland C) desert D) temperate forest
only ______ of the Sun's energy reaches the earth.
a - 1 millionth b - 2 millionth c - 1 trillionth d - 1 billionth e - 2 billionth
Match the lettered blanks to their location in the Geologic Time Scale in this image
A) Neogene B) Cambrian C) Mesozoic D) Holocene 1) A 2) B 3) C 4) D
Which of the following are the first cells in the blood that encounter antigens?
A) B cells B) dendritic cells C) macrophages D) T cells