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A high-resolution seismic reflection/refraction study of the Chugach- Peninsular terrane boundary, southern Alaska

Journal of Geophysical Research

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Abstract

We present results from a high-resolution seismic refraction analysis of the shallow (approximately 2 km) crustal structure along the 107-km-long Trans-Alaska Crustal Transect Chugach reflection line in southern Alaska and a comparison with laboratory measurements of field samples. The refraction analysis includes the two-dimensional interpretation of several thousand first- and secondary-arrival travel times digitized from 1024-channel split-spread common shot gathers. The velocity model derived from this analysis better defines the location and geometry of terrane boundaries than does the normal incidence reflection section and agrees well with surface mapping of lithologies. Furthermore, the model predicts travel times within 100 ms of the reflection times recorded from the base of the Quaternary on the Chugach reflection section. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
A high-resolution seismic reflection/refraction study of the Chugach- Peninsular terrane boundary, southern Alaska
Series title:
Journal of Geophysical Research
Volume
94
Issue:
B4
Year Published:
1989
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Geophysical Research
First page:
4441
Last page:
4455
Number of Pages:
15