The intrusion (D) cuts through the three sedimentary rock layers, so it must be younger than those layers. The principle of superposition states that the oldest sedimentary rock units are at the bottom, and the youngest are at the top. Based on this, layer C is oldest, followed by B and A.
Is igneous intrusion J older or younger than layers A and B?
a. It is older than layer J. Because of the principle of superposition, this states that sedimentary rocks become younger from bottom to top.
Is an intrusion younger or older than the rock layers?
An intrusion is always younger than the rock layers around and beneath it. A fault is always younger than the rock it cuts through. The surface where new rock layers meet a much older rock surface beneath them is called an unconformity. An unconformity is a gap in the geologic record.
Which is older intrusion or layer?
How do you know? Layer Y is older than Intrusion V. An intrusion is always newer than the layer it cuts through.
What are the rock layers?
Part of Hall of Planet Earth. There are three kinds of rock: igneous, sedimentary, and metamorphic. Igneous rocks form when molten rock (magma or lava) cools and solidifies. Sedimentary rocks originate when particles settle out of water or air, or by precipitation of minerals from water.
Which stratum is the oldest?
The law of superposition states that rock strata (layers) farthest from the ground surface are the oldest (formed first) and rock strata (layers) closest to the ground surface are the youngest (formed most recently).
Which rock is the youngest?
sedimentary rock The principle of superposition states that the oldest sedimentary rock units are at the bottom, and the youngest are at the top.