read the text. then answer the question. sand, mud, and boulders were deposited at the edge of a glacier…
read the text. then answer the question. sand, mud, and boulders were deposited at the edge of a glacier. over time, the glacier melted. a lake covered the area and mud was deposited. over thousands of years, the lake dried up, and the area became a desert. sand was deposited by wind on top of the older sediment. a rock sequence formed from the sediment layers described above. put the following rocks in order to show what this rock sequence probably looked like. put the following rocks in order: younger, shale, conglomerate, sandstone, older.
Answer
Explanation:
Step1: Understand sediment - deposition order
The first sediment deposited is the oldest. Glacial deposition first brought boulders which form conglomerates. Then, as the glacier melted and a lake formed, mud was deposited which turns into shale. Finally, when the lake dried up and became a desert, sand was deposited forming sandstone.
Step2: Determine rock - age order
Based on the above - described deposition sequence, the oldest rock is conglomerate (formed from boulders deposited first), then shale (from lake - deposited mud), and the youngest is sandstone (from desert - deposited sand).
Answer:
conglomerate, shale, sandstone