A. It weakens the crust so earthquakes are more prevalent.
B. It allows magma to escape to the surface of Earth.
C. It leaves a gap in the geological record.
D. It doesn't contain any fossils for geologists to study.
2006-07-01 20:35:29 · 6 answers · asked by beth l 1 in Science & Mathematics ➔ Earth Sciences & Geology
C
2006-07-02 05:37:09 · answer #1 · answered by ziluke 2 · 0⤊ 0⤋
A gap in the geologic record. Rock layers are deposited like the pages of a book -- the oldest being on the bottom under usual conditions. If part of these rock layers are eroded away or simply not deposited -- an unconformity is produced. Part of the earth's history is missing. The fossil record is incomplete. There is no place on earth where there is a complete geologic record in the rock layers.
2006-07-02 08:04:36 · answer #2 · answered by schoolmaster47 1 · 0⤊ 0⤋
Unconformities are the geologic features which convinced Hutton and Lyell that the earth was old. An unconformity is a period of erosion found between two rock layers. The evidence of erosion can be severe or mild, but the interval does represent a significant period of time between the deposition of the older (lower) rocks and younger(upper rocks).
2006-07-02 03:42:26 · answer #3 · answered by Bolan 6 · 0⤊ 0⤋
letter c man
2006-07-02 09:31:56 · answer #4 · answered by Bass_Guitar_Player 2 · 0⤊ 0⤋
A)
2006-07-02 03:40:26 · answer #5 · answered by donia f 4 · 0⤊ 0⤋
d?
2006-07-02 03:37:46 · answer #6 · answered by double v 5 · 0⤊ 0⤋