USGS - science for a changing world

Pacific Northwest Geologic Mapping and Urban Hazards

Rowland W. Tabor

Geologist Emeritus

U.S. Geological Survey
Western Region Earth Surface

Processes Team
345 Middlefield Road MS-973
Menlo Park, CA 94025

Telephone- (650) 329-4955
Fax- (650) 329-5490

Rowland Tabor

Rowland Tabor 2004 (photo by Mike Diggles)


Geology of the North Cascade Mountains, Washington

Geology of the Olympic Mountains, Washington

Visit Geology of the North Cascades: A Mountain Mosaic by Rowland Tabor and Ralph Haugerud at:

And visit Geologic Guide to Olympic National Park by Rowland Tabor at:


Preparation of Robinson Mountain 1:100,000 geologic map with Ralph Haugerud

Compilation of geology of the North Cascades, also with Ralph Haugerud, at 1:200,000 scale and preparation of ms to accompany the map, including non-technical description

Revisions of previously released 1:24,000 scale geologic maps of the Puget Sound region on newly aquired LiDAR bases.


online imageCrowder, D.F., and Tabor, R.W., 1965, Routes and rocks: Hiker's guide to the North Cascades from Glacier Peak to Lake Chelan: The Mountaineers, Seattle, 235 p.

Crowder, D.F., Tabor, R.W., and Ford, A.B., 1966, Geologic map of the Glacier Peak quadrangle, Snohomish and Chelan Counties, Washington: U.S. Geological Survey Geol. Quad. Map GQ-473, l:62,500.

Tabor, R.W., 1967, Geologic map of the Williamsburg quadrangle, Whitley County, Kentucky: U.S. Geological Survey Geol. Quad. Map GC-616, 1:24,000.

Tabor, R.W., and Manning, H.H., 1968, Mountain geology, in Mountaineering: The Freedom of the Hills, 2nd ed.: The Mountaineers, Seattle, p. 35l-385.

online imageTabor, R.W., and Crowder, D.F., 1968, Hiker's map of the North Cascades: Routes and Rocks in the Mt. Challenger quadrangle: The Mountaineers, Seattle, 47 p.

Tabor, R.W., Engles, J.C., and Staatz, M.H., 1968, Quartz diorite-quartz monzonite and granite plutons of the Pasayten River area, Washington--Petrology, age, and emplacement: in Geological Survey Research 1968: U.S. Geological Survey Prof. Paper 600-C, p. C45-C52.

Tabor, R.W., and Crowder, D.F., 1969, Intrusion and eruption of late Cenozoic magmas in the Glacier Peak area, North Cascades, Washington: U.S. Geological Survey Prof. Paper 604, 67 p.

Tabor, R.W., 1971, Origin of ridge-top depressions by large-scale creep in the Olympic Mountains, Washington: Geol. Soc. America Bull., v. 82, p. 1811-1822.

Staatz, M., Weiss, P.L., Tabor, R.W., and Robertson, J.S., 1972, Mineral resources, Pasayten Wilderness area, Washington: U.S. Geological Survey Bull. 1325.

Tabor, R.W., Yeats, R.W., and Sorenson, M.L., 1972, Geology of the Mount Angeles Quadrangle, Washington: GQ-958, scale l:62,500.

Cady, W.M., Tabor, R.W., MacLeod, N.S., and Sorenson, M.L., 1972, Geology of the Tyler Peak quadrangle, Clallam and Jefferson Counties, Washington: GQ-970, scale l:62,500.

Staatz, M., Tabor, R.W., Weiss, P.L., Robertson, J.S., Van Noy, R.M., and Pattee, E.C., 1972, Geology and mineral resources of the northern part of the North Cascades National Park, Washington, U.S. Geological Survey Bull. 1359, 132.

Tabor, R.W., 1972, Age of the Olympic Metamorphism, Washington: K-Ar dating of low grade metamorphic rocks: Geol. Soc. America Bull., v. 83, p. 1805-1816.

on-lineTabor, R.W., 1975, Geologic guide to Olympic National Park: University of Washington Press, Seattle, 144 p. (exerpts online).

Tabor, R.W., and Ellen, S.E., 1975, Geologic map, Washoe City quadrangle: Washoe City Folio, Environmental Series: Nevada Bureau of Mines and Geology, scale l:24,000

Tabor, R.W., and Cady, W.M., 1978, Geologic map of the Olympic Peninsula, Washington: U.S. Geological Survey Misc. Inv. map 994, scale l:l25,000.

Tabor, R.W., and Cady, W.M., 1978, The structure of the Olympic Mountains, Washington, Analysis of a subduction zone: U.S. Geological Survey Prof. Paper 1033, 38 p.

on-lineTabor, R.W., Waitt, R.B., Jr., Frizzell, V.A., Jr., Swanson, D.A., Byerly, G. R., and Bently, R.D., 1982, Geologic map of the Wenatchee 1:100,000 quadrangle, Washington and pamphlet, 26 p. U.S. Geological Survey MI map no. 1311

Tabor, R.W., Frizzell, V.A., Yeats, R.S., and Whetten, J.T., 1982, Geologic map of the Monte Cristo-Eagle Rock roadless areas, Washington (RARE II 6031 and 6054): U.S. Geological Survey Miscellaneous Field Studies Map MF-1380A.

Tabor, R.W., 1982, Geologic map of the Wonder Mountain roadless area (6086) Washington: U.S. Geological Survey Miscellaneous Field Studies Map MF 1418A.

Tabor, R.W., Frizzell, V.A., Jr., Vance, J.A., and Naeser, C.W., 1984, Ages and stratigraphy of lower and middle Tertiary sedimentary and volcanic rocks of the Central Cascades, Washington: application to the tectonic history of the Straight Creek fault: Geological Society of America Bulletin, v. 95, no. 1, p. 26-44.

Tabor, R. W., 1986, Changing concepts of geologic structure and the problem of siting nuclear reactors: examples from Washington: Geology, v. 14, p. 738-742.

on-lineTabor, R.W., Frizzell, V. A., Jr., Whetten, J.T., Swanson, D.A., Byerly, G.R., Booth, D.B., Hetherington, M.J., Waitt, R.B., Jr., and Zartman, R.E., 1987, Geologic Map of the Chelan 30 x 60 quadrangle Washington: U.S. Geological Survey I-1661, scale 1:100,000 and pamphlet

Tabor, R.W., Zartman, R.E., and Frizzell, V.A., Jr., 1987, Possible tectonostratigraphic terranes in the North Cascades Crystalline core, Washington: in Schuster, E., ed., Selected papers on the geology of Washington State: Washington Division of Mines and Geology Bulletin 77

Frizzell, V. A., Jr., Tabor, R. W., Zartman, R. E., and Blome, C. D., 1987, Late Mesozoic or early Tertiary melanges in the western Cascades of Washington: in Schuster, E., ed., Geology of Washington: Washington State: Washington Division of Mines and Geology Bulletin 77

Heller, Paul L., Tabor, Rowland W., and Suczek, Christopher A., 1987, Paleogeographic evolution of the Pacific Northwest during Paleogene time: Canadian Journal of Earth Sciences, v. 24, p. 1652-1667

Tabor, R. W., Haugerud, R. A., Miller, R. B., Brown, E. H., and Babcock, R. S., 1989, IGC Field Trip T307: Accreted terranes of the North Cascade Range, Washington: American Geophysical Union IGC Guidebook for 28th Congress, Washington, D.C., 62 p

Haugerud, R. A., van der Heyden, P., Tabor, R. W., Stacey, J. S. and Zartman, R. E., 1991, Late Cretaceous and early Tertiary plutonism and deformation in the Skagit Gneiss Complex, North Cascades Range, Washington and British Columbia: Geological Society of America Bulletin, v. 103, p. 1297-1307

Heller, P. L., Tabor, R. W., O'Neil, J. R., Peavear, D. R., Shafiqullah, M. and Winslow, N. S., 1992, Isotopic provenance of Paleogene sandstones from the accretionary core of the Olympic Mountains, Washington: Geological Society of America Bulletin, 104, 140-153.

on-lineTabor, R. W., Frizzell, V. A., Jr., Booth, D. B., Waitt, R. B., Whetten, J. T. and Zartman, R. E., 1993, Geologic map of the Skykomish 60-minute by 30- minute quadrangle, Washington: U.S. Geological Survey Miscellaneous Investigations with pamphlet, 42 p. Map, I-1963, scale 1:100,000

Tabor, R. W., 1994, Late Mesozoic and possible early Tertiary accretion in Western Washington State: the Helena-Haystack melange and the Darrington-Devils Mountain fault zone: Geological Society of America Bulletin, v. 106, p. 217-232.

Tabor, R. W., Frizzell, V.A, Jr, Booth, D. B., and Waitt, R. B., Jr., 2000, Geologic map of the Snoqualmie Pass 60 minute by 30 minute quadrangle, Washington: U.S. Geological Survey Miscellaneous Investigations Map with pamphlet, 50p.

on-lineTabor, Rowland and Haugerud, Ralph, 1999, Geology of the North Cascades: A Mountain Mosaic, The Mountaineer Books, Seattle, 143 p. (exerpts online).

on-lineTabor, R.W., Booth, D.B. and Ford, A.B., 2002, Geologic map of the Sauk River 30 minute by 60 minute quadrangle, U. S. Geological Survey, Miscellaneous Investigations, I-2592, with pamphlet, 65p. scale 1:100,000,

on-line Tabor, R.W., Haugerud, R.A., Hildreth, W., and Brown, E.H., 2003, Geologic map of the Mount Baker 30- by 60 minute quadrangle, Washington, U.S. Geological Survey, , Geologic Investigation Series, I-2660, with pamphlet, 70p., scale 1:100,000

on-lineHaugerud, Ralph A., and Tabor, Rowland W., 2009, Geologic map of the North Cascade Range, Washington: U.S. Geological Survey Scientific Investigations Map 2940, 2 sheets, scale 1:200,000; 2 pamphlets, 29 p. and 23 p.,


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