Sequence Earth History Practice Test

A simplified timeline of local events is shown from left (earlier) to right (later). This is relative order, not exact time.

Earlier → Later

1 Mud deposited with Fossil W (worm burrows)

2 Volcanic ash falls (Ash Layer)

3 Erosion removes some rock (erosion surface)

4 Sand deposited with Fossil V (shells)

Which statement is not supported by the sequence?

Two simplified rock columns from different locations are shown. Top is younger in each column. These show relative order only.

Column 1 (top → bottom):

A1: Sandstone

B1: Volcanic ash (marker bed)

C1: Shale with Fossil P (ammonite)

Column 2 (top → bottom):

A2: Limestone

B2: Volcanic ash (same marker bed)

C2: Shale with Fossil P (ammonite)

Which comparison is supported by the evidence?