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Origin of sackung uphill-facing scarps in the Saint Elias orogen, Alaska: LIDAR data visualization and stress modeling

Dates

Year
2010

Citation

Li, Zhiyong, Bruhn, R. L., Pavlis, T. L., Vorkink, M., and Zeng, Zuoxun, 2010, Origin of sackung uphill-facing scarps in the Saint Elias orogen, Alaska: LIDAR data visualization and stress modeling: Geological Society of America Bulletin, v. 122, no. 9-10, p. 1585-1599.

Summary

Quaternary fault scarps occur in mountain blocks throughout the Saint Elias orogen of southern Alaska. Mechanisms proposed for formation of these scarps include deformation caused by active folding, downhill creep and landsliding on steep, previously glaciated slopes, and superficial faulting caused by strong ground motion during earthquakes. Field observations and interpretation of high-resolution topographic models constructed from a light detection and ranging (LIDAR) survey indicate that failure by flexural toppling creates the uphill-facing scarps in the mountain that we selected for detailed analysis. Toppling failure occurs by shearing and outward rotation of sedimentary bedding that dips steeply into the mountainside. The scarps [...]

Contacts

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Provenance

Data source
File Processing
File Process
Type
End Note
Reference Item
3397 record import test
Reference File
NWBLCC-20160406.xml

Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme http://dx.doi.org/10.1130/B30019.1
ISSN http://sciencebase.gov/vocab/identifierScheme 0016-7606, 0016-7606

Citation Extension

journalGeological Society of America Bulletin
parts
typeNotes
value9302
typePages
value1585-1599
typeVolume
value122
typeNumber
value9-10
citationTypeJournal Article

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