Author Question: Distinguish between rhyolite tuff and welded tuff.[br][br][b][color=#A83E49]Question ... (Read 65 times)

imanialler · **on:** Jul 13, 2018

Distinguish between rhyolite tuff and welded tuff.

Question 2

The Archean atmosphere can best be described as ____.
A)oxygen-rich
B)nitrogen-rich
C)ozone-rich
D)oxygen-deficient
E)rich in carbon dioxide

Eunice618 · **Reply #1 on:** Jul 13, 2018

Answer to Question 1

Most tuff is silica rich, light colored, and is called rhyolite tuff. However, some ash flows are so hot that as they come to rest, the ash particles fuse together and form a welded tuff.

Answer to Question 2

D