Posted on Jan 27, 2022
How scientists know when the last big Cascadia earthquake happened
1.57K
16
4
10
10
0
At approximately 9 p.m. Pacific Standard Time, Jan. 26, 1700, a magnitude 8 or 9 earthquake occurred on the Cascadia Subduction Zone, a 600-mile stretch between Vancouver Island, British Columbia and Cape Mendocino, California.
How scientists know when the last big Cascadia earthquake happened
Posted from opb.org
Native Americans
American History
Natural Disaster
Geology
Science
Posted >1 y ago
Responses: 4
2
2
0
1
1
0
PO1 William "Chip" Nagel quite an interesting article, the more we understand about the past the better prepared we can be.
(1)
(0)
1
1
0
American researchers used carbon dating on the spruce, peat and fossilized plants. Sitka spruce as far apart as southern Washington and Northern California died from the high waters during the same few decades — sometime between 1695 and 1720. Their rings were wide right up through the last ring, proving that a sudden event rather than slow sea level rise was the culprit.
(1)
(0)
Read This Next
Continue with Facebook 
Continue with Google