2006-11-20 06:52:08 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Geography
if rock b is inside rock a then rock b has to be older becaue it would have been encompassed by whatever formed rock a. Think of it this way also, if rock b was younger how would it get inside rock a?
2006-11-20 06:57:18 · answer #1 · answered by kaisermojo 2 · 1⤊ 0⤋
It depends on how you are looking at Rock A and Rock B.
If you cut open Rock A and Rock B was inside, then B is older, because Rock A formed around it.
But, if you are looking at a cross-section of Rock A, and Rock B cuts across Rock A from the exterior, then Rock A is older, Rock B would have been an intrusive rock.
2006-11-20 16:24:45 · answer #2 · answered by Jason B 2 · 0⤊ 0⤋
The little bits of rock b didn't crawl inside the already solidified rock. So the little (or even big) bits of rock inside must be older.
2006-11-20 15:39:28 · answer #3 · answered by rosie recipe 7 · 0⤊ 0⤋
could it be something to do with minerals from rock b that are in rock a and that they got there by heating up and 'growing' first then getting cooler and resolidifying further up and getting encompassed into rock a?
2006-11-20 17:19:39 · answer #4 · answered by Andy P 1 · 0⤊ 0⤋
dunno
2006-11-20 14:56:11 · answer #5 · answered by mickeymousedude 2 · 0⤊ 1⤋