Skip to main content
USGS - science for a changing world

Basement and regional structure along strike of the Queen Charlotte Fault in the context of modern and historical earthquake ruptures

Dates

Publication Date

Citation

Maureen A. L. Walton, Sean P. S. Gulick, Peter J. Haeussler, Emily C. Roland, and Anne M. Tréhu, 2015, Basement and regional structure along strike of the Queen Charlotte Fault in the context of modern and historical earthquake ruptures: Bulletin of the Seismological Society of America, v. 105, iss. 28.

Summary

The Queen Charlotte fault (QCF) is a dextral transform system located offshore of southeastern Alaska and western Canada, accommodating ∼4.4  cm/yr of relative motion between the Pacific and North American plates. Oblique convergence along the fault increases southward, and how this convergence is accommodated is still debated. Using seismic reflection data, we interpret offshore basement structure, faulting, and stratigraphy to provide a geological context for two recent earthquakes, an Mw 7.5 strike‐slip event near Craig, Alaska, and an Mw 7.8 thrust event near Haida Gwaii, Canada. We map downwarped Pacific oceanic crust near 54° N, between the two rupture zones. Observed downwarping decreases north and south of 54° N, parallel to [...]

Contacts

Attached Files

Click on title to download individual files attached to this item.

metadata6257205563384168739.xml
Potential Metadata Source

View
3.79 KB
Thumbnail
Thumbnail

Tags

Provenance

Data source
Harvester
Harvested on Sat Oct 31 04:15:58 MDT 2015 from MODS XML Service

Additional Information

Identifiers

Type Scheme Key
local-index unknown 70142817
local-pk unknown 70142817
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1785/0120140174
series unknown Bulletin of the Seismological Society of America

Citation Extension

journalBulletin of the Seismological Society of America
parts
typevolume
value105
typeissue
value28
languageEnglish
citationTypeArticle

Item Actions

View Item as ...

Save Item as ...

View Item...