How do you do this problem ?

Question

Which of the following is likely to have formed farthest from the shoreline?
pebble conglomerate
quartz sandstone
silty shale
course-grained granite

Answer 1

The answer to this question depends on which way you go from the shoreline.
Going out to sea the one that will form the furthest from shore is the silty shale. Shales are formed in very calm waters like lakes, and on the continental shelf.
Going inland the coarse-grained granite would be the farthest from shore. To form coarse grains a granite must cool very slowly, away from things like water that helps cool rock quickly. It also must cool underground, surrounded by the country rocks (original rocks) keeping it warm.

Answer 2

This is a poorly worded question, but I think I know what the teacher or textbook is trying to get at. Whoever posed the question wants you to recognize that pebbles in a conglomerate rock need to be transported long distances in a river system to give them a rounded shape. The pebbles could have been deposited near the shoreline, lithified and cemented to form a conglomerate rock, but I would be willing to bet that's not what your teacher meant. A better wording would be: Which of the following is likely to have been formed from materials that originated farthest from the shoreline?

Answer 3

Your answer would probably be the type of rock which is hardest, because that is the rock that could travel the farthest before being broken apart by abrasion. That would make the most plausible answer course grained granite followed by pebble conglomerate.

Answer 4

Course-Grained Granite.

Answer 5

Farthest from the shoreline in the water, or farthest from the shoreline on the land?

Answer 6

The answer to that is so obvious, you should be able to figure it out yourself instead of cheating, but here's a hint:

It won't be a sedimentary rock.

Answer 7

i dont the answer