Q: An igneous intrusion cuts through three layers of sedimentary rock. which rock is the youngest? and why?

A:
A) the igneous intrusion
B) the top layer of sedimentary rock
C) the middle layer of sedimentary rock
D) the bottom layer of sedimentary rock

Can someone please help me out with this question by explaining why that answer choice is the answer to this question. Thank you for your time and help.

help somebody

mrs.sue....

http://www.fi.edu/fellows/fellow1/oct98/create/sediment.htm

http://www.probertencyclopaedia.com/cgi-bin/res.pl?keyword=Igneous+Intrusion&offset=0

in case you have not figured out the answer yet the answer is D.The bottom layer of the sedimentary rock.

ashley you wrong why did u say d when its A, yall some idiots

To determine which rock layer is the youngest, you need to understand the principles of relative dating. Relative dating involves comparing the age of different rock layers to determine their sequence of formation.

In this scenario, we have an igneous intrusion cutting through three layers of sedimentary rock. Ignous intrusions are formed when magma or molten rock gets injected into existing rock layers. Since the intrusion cuts through the sedimentary rock layers, it must be younger than the rocks it has intruded.

Therefore, the youngest rock layer is the top layer of sedimentary rock (option B). It is younger than the igneous intrusion itself, as well as the middle and bottom layers of sedimentary rock. The reason is that sediments get deposited over time, with the oldest layers at the bottom and the youngest layers at the top. As the top layer, it is exposed and not disrupted by the intrusion, indicating that it formed after the intrusion occurred.