Search
You searched for:
Start Over
Pleistocene
Remove constraint Pleistocene
Author
Walker, George Walton, 1921-
Remove constraint Author: Walker, George Walton, 1921-
Subject
Thematic Classification -- Geography and Geology -- Geology
Remove constraint Subject: Thematic Classification -- Geography and Geology -- Geology
1 entry found
Search Results
-
1. [Article] The Ore bin ; Vol. 32 No. 6 (June 1970)
Periodic violent eruptions from many different centers during Cenozoic time deposited vast quantities of pyroclastic material as ash-flow tuffs over most of Oregon, although the Coast Ranges and isolated ...Citation