Question

Be able to put the following events that formed the Palouse region in relative order: the formation of the Palouse Loess, the formation of the Columbia River Basalts, the formation of the Channeled Scablands.

Answer 1

The formation of the Palouse region can be put in relative order as follows: the formation of the Columbia River Basalts, the formation of the Channeled Scablands, and the formation of the Palouse Loess.

Step-by-step explanation:

The events that formed the Palouse region can be put in relative order as follows:

1. The formation of the Columbia River Basalts
2. The formation of the Channeled Scablands
3. The formation of the Palouse Loess

The formation of the Columbia River Basalts occurred first, with lava flows covering the region around 17 million years ago. This was followed by the formation of the Channeled Scablands due to massive floods from melting glaciers about 13,000 to 15,000 years ago. Finally, the Palouse Loess, which is wind-blown sediment, was deposited in the region over the past tens of thousands of years.