| Abstract: | The Snoqualmie Pass quadrangle lies at the north edge of a Tertiary volcanic and sedimentary cover, where the regional structural uplift to the north elevated the older rocks to erosional levels. Much of the quadrangle is underlain by folded Eocene volcanic rocks and fluvial deposts of an extensional event, and these rocks are overlain by Cascade arc volcanic rocks: mildly deformed Oligocene-Miocene rocks and undeformed younger volcanic rocks. Melanges of Paleozoic and Mesozoic rocks are exposed in structural highs in the northern part of the quadrangle. The quadrangle is traversed north to south by the Straight Creek Fault, and the probably partially coincident Darringon-Devils Mountain Fault. A rich Quaternary stratigraphy reveals events of the Frazer glaciation. |
| Genre: | USGS Numbered Series |
| ProdID: | 67483 |
| Citation Author: | Tabor, R. W.; Frizzell, V. A., Jr.; Booth, D. B.; Waitt, R. B. |
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| Citation Edition: | Version 1.0 |
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| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | 0473000 |
| Citation LatS: | 0470000 |
| Citation LonE: | -1210000 |
| Citation LonW: | -1220000 |
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| Citation No Pagination: | |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | N |
| Citation Phsyical Description: | 1 map : col., 56 x 76 cm., on sheet 94 x 143 cm., folded in envelope 30 x 24 cm.; 1 pamphlet (57 cm. : ill., maps ; 28 cm.) |
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| Citation Public Comments: | See also Data Series 186 (DS-186) |
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| Citation Series: | IMAP |
| Citation Series Code: | I |
| Citation Series Number: | 2538 |
| Citation Search Results Text: | Geologic map of the Snoqualmie Pass 30 x 60 minute quadrangle, Washington; 2000; I; 2538; Tabor, R. W.; Frizzell, V. A., Jr.; Booth, D. B.; Waitt, R. B. |
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| Citation Volume: | |
| Citation Year: | 2000 |
| Type: | citation/reference |
| Text: | Geologic map of the Snoqualmie Pass 30 x 60 minute quadrangle, Washington; 2000; I; 2538; Tabor, R. W.; Frizzell, V. A., Jr.; Booth, D. B.; Waitt, R. B. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/imap/i2538/ |
| URL (INDEX PAGE): | http://ngmdb.usgs.gov/Prodesc/proddesc_37097.htm |
| Date Other: | Sun, 1 Apr 2001 00:00 -0600 |
| Publisher: | |
