please use figure 1 and figure 2 to answer all the questions to this long questi
ID: 283701 • Letter: P
Question
please use figure 1 and figure 2 to answer all the questions to this long question(all one big question- a through N)
a. At the surface, what is the temperature at which rock starts to melt? b. At the surface, what is the temperature at which rock is completely melted? c. At a depth of 100 km, what is the temperature at which rock starts to melt? d. At a depth of 100 km, what is the temperature at which rock is completely melted? In general, melting temperature increases/decrease (choose one) with depth? Is there anywhere under the continent where rock is typically melted (within the first 150 km)? Is there anywhere under the ocean where rock is typically melted (within the first 150 km)? Rock can be melted if the temperatures (geothermal gradients) are hotter than normal. Does this occur at hot spots / subduction zones / or mid-ocean ridge (choose one)? If I take a parcel of rock at 1500 degrees Celsius and 150 km, is it melted? If I take the parcel of rock from and move it up to surface without changing its temperature, is it melted? Where does the situation described in and j occur? At hot spots / subduction zones / or mid-ocean ridge (choose one)? The melting temperature of a rock changes if water is added to it. 1 his is illustrated in the diagram below. Using this diagram, at what depths under the ocean is rock partially melted if the rock is wet? e. f. g. h. i. j. k. 1· m. Where does the situation described in j occur? n. n. Below match the volcanic region with the reason melting occurs there. Regions: hot spots, subduction zones, mid-ocean ridges . hot material rises with little change in temperature . rock beneath the surface is abnormally warm . oceanic crust shoved into mantle releases water, changing the mantle's melting temperatureExplanation / Answer
a) 1100oC because it is on the surface at an depth of 0 Km.
b) 1750oC completely melted.
c) 1500oC.
d) 1800-1900 oC
e) Increases.
f) No.
g) Yes at around 1100oC.
h) Subduction Zone.
I) If the rock is having water it will start melting where as for the dry rock type it will require more temperature to go in the melt.
j) Yes, it’ll melt for both the rock type i.e., rocks saturated with water or rocks which are in dry state.
k) Subdiction Zone.
l) 60-70 Km.
m) Rapid uplifted of rock strata/ rocks being undergone to rapid erosional phase.
n) Hot Spot- Rock beneath the surface is abnormally warm.
Subduction Zone- Ocean crust shoved into mantle release water, changing the mantle melting temperature.
Mid-oceanic ridges- hot material rises with little change in temperature.
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