Top Banner
Seattle fault, Bainbridge Island, WA Nelson et al., 2003, GSA Bulletin Toe Jam Hill fault is a north- dipping backthrust to the Seattle fault zone. The earthquake history of the Toe Jam Hill fault provides a proxy for the recurrence of earthquakes along the Seattle fault zone. These data inform seismic hazard assessments.
14

Seattle fault, Bainbridge Island, WA

Dec 19, 2021

Download

Documents

dariahiddleston
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Page 1: Seattle fault, Bainbridge Island, WA

Seattle fault, Bainbridge Island, WA

Nelson et al., 2003, GSA Bulletin

Toe Jam Hill fault is a north-dipping backthrust to the Seattle fault zone.

The earthquake history of the Toe Jam Hill fault provides a proxy for the recurrence of earthquakesalong the Seattle fault zone.

These data inform seismic hazardassessments.

Page 2: Seattle fault, Bainbridge Island, WA
Page 3: Seattle fault, Bainbridge Island, WA
Page 4: Seattle fault, Bainbridge Island, WA

Pezzopane, 1999

Interpretation of lidar and morphology mapping

Old school mylar overlay on printed lidar

Similar to what we now doon screen in QGIS

Effectively identifies faultsand other geomorphicfeatures useful in planningpaleoseismic studies.

Page 5: Seattle fault, Bainbridge Island, WA

Full map interpretation of the location of the Seattle fault on Bainbridge Island

Page 6: Seattle fault, Bainbridge Island, WA

http://pubs.usgs.gov/of/2002/ofr-02-0060/Nelson et al. 2003

Crane Lake trench

Page 7: Seattle fault, Bainbridge Island, WA

Nelson et al., 2003, GSA Bulletin

Three, or possibly four, earthquakesbetween 2500 and 1000 yr ago. The most recent earthquake occurred Between 1050–1020 cal. (calibrated) yr B.P. (A.D. 900–930).

Page 8: Seattle fault, Bainbridge Island, WA

Nelson et al. 2003 http://pubs.usgs.gov/of/2002/ofr-02-0060/

Saddle trench

Page 9: Seattle fault, Bainbridge Island, WA

Nelson et al. 2003 http://pubs.usgs.gov/of/2002/ofr-02-0060/

Bear’s Lair trench

Page 10: Seattle fault, Bainbridge Island, WA

Nelson et al. 2003 http://pubs.usgs.gov/of/2002/ofr-02-0060/

Mossy Lane trench

Page 11: Seattle fault, Bainbridge Island, WA

Nelson et al. 2003 http://pubs.usgs.gov/of/2002/ofr-02-0060/

Blacktail trench

Page 12: Seattle fault, Bainbridge Island, WA

Crane Lake trench

Page 13: Seattle fault, Bainbridge Island, WA

Mossy Lane trench Saddle trench

Bedrock faulted against forest soil A-Horizon

Page 14: Seattle fault, Bainbridge Island, WA

Bears Lair trench Saddle trench