Answer:
Existing rocks join together under high heat and pressure.
Explanation:
There are three major groups of rocks, igneous rocks, metamorphic rocks, and sedimentary rocks. Each of them has their own unique way in which they form. The igneous rocks are the basis for the formation of the other two, and they form from magma/lava that has cooled off. The metamorphic rocks form from preexisting rocks, where deep into the crust they experience high pressure and temperatures and change their properties. Sedimentary rocks form from the breaking apart from the previous two types of rocks, and later merging together under the right conditions.
The metamorphic rocks can have igneous, sedimentary, or mixed origin. In order for these rocks to form they need to be deep into the crust where the pressure and temperatures are much higher. The high pressure and temperatures lead to the merging of different types of rcoks, change their properties, and create a new type of rock. This is one of the reasons why the metamorphic rocks often have multiple colors and they are alligned like layers.
Answer: The overall lateral lenght of the San Andreas Fault is estimated by measuring the distance on similar terranes on both sides of the fault (continental x pacific). The lenght is increased by eathquake occurrence (here given as 5m per event) and a regular annual displacement rate (estimated in 0,10m per year).
Also, it is acceptable to consider a time lapse of 45 years between each earthquake (considering the major events of 1857, 1906, 1957 and 1989).
Those values of lenght on the fault are considered to vary from 150 to 350 miles. If we apply simple median arithmethical value of 250 miles between these numbers, against the obtained displacement rate of 5,1 meters (let´s set the annual displacement rate aside to balance) we have: 250 miles divided for 0,003 miles (5,1 meters converted to miles) is equal to: 83.333.
So, more than 80.000 thousand eathquakes (considering the movement was mostly made by these earth intercurrences) would be an acceptable number to account for the total actual displacement on the SAF.
I think the answer is marble .
Limestone becomes marble :)
The answer for this qn is D.