REFERENCES

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Aalto, K. R. and Dott, R. H., Jr., 1970, Late Mesozoic conglomerate flysch in southwestern Oregon, and the problem of transport of coarse gravel in deep water: Geological Association of Canada, Special Paper 7, p. 53-65.

 

Bailey, M. M., 1989, Revisions to stratigraphic nomenclature of the Picture Gorge Basalt Subgroup, Columbia River Basalt Group: Geological Society of America Special Paper 239, p. 67-84.

 

Baldwin, E. M., 1976, Geology of Oregon, Kendall/Hunt, 94 p.

 

Beck, M. E., D. C. Engebretson, C. S. Grome, E. M. Taylor, and J. W. Whitney, 1978, Paleomagnetism of the Middle Tertiary Clarno Formation of north-central Oregon: constraint on models for tectonic rotation: Am. Geophysical Union Trans., 59, No. 12, p. 1058.

 

Bestland, E. A., Hammond, P. E., Blackwell, D. L. S., Kays, M. A., Retallack, G. J., and Stimac, J., 1999, Geologic framework of the Clarno Unit, John Day Fossil Beds National Monument, central Oregon: Oregon Geology, vol. 61, p. 3-19.

 

Bestland, E. A., Retallack, G. J., and Fremd, T., 1994, Sequence stratigraphy of the Eocene-Oligocene transition: examples from the non-marine volcanically influenced John Day Basin, in Swanson, D. A., and Haugerud, R. A., eds., Geologic field trips in the Pacific Northwest: Seattle, Washington, 1994 Geological Society of America Annual Meeting, p. 1A-19A.

 

Bestland, E. A., Retallack, G. J., Rice, A. E., and Mindszenty, A., 1996, Late Eocene detrital laterites in central Oregon: Mass balance geochemistry, depositional setting, and landscape evolution: Geol. Soc. Amer. Bull., vol. 108, no. 3, p. 285-302.

 

Bestland, E. A., G. J. Retallack, C. C. Swisher, and T. Fremd, 1993, Timing of cut-and-fill sequences in the John Day Formation (Eocene-Oligocene), Painted Hills area, central Oregon: Geological Society of America Abstracts with Programs, v. 25, p. 9.

 

Bishop, E. M., 2003, In Search of Ancient Oregon: Timber Press, p. 1-288.

 

Brown, C. E. and Thayer, T. P., 1966, Geologic Map of the Canyon City Quadrangle, Northeastern Oregon: U. S. Geological Survey Miscellaneous Geologic Investigations Map I-447.

 

Butler, R. F., Gehrels, G. E., and Kodama, K. P., 2001, A moderate translation alternative to the Baja British Columbia hypothesis: Geological Society of America, GSA Today, vol. 11, no. 6, p. 4-10.

 

Cavender, T. M., 1968, Freshwater fish remains from the Clarno Formation, Ochoco Mountains of north-central Oregon: Ore. Dept. Geol. And Min. Industries, The Ore Bin, vol. 30, no. 7, p. 125-141.

 

Chaney, R. W., 1948, The bearing of the living Metasequoia on problems of Tertiary paleobotony: Proceedings of the National Academy of Sciences, vol. 34, p. 503-515.

 

Clark, R. D., 1989, The odyssey of Thomas Condon: Oregon Historical Society Press, 569

 

Dickinson, W. R., 1979, Mesozoic forearc basin in central Oregon: Geology, vol. 7, p. 166-170.

 

Dorsey, R. J. and Lenegan, R. J., 2007, Structural controls on middle Cretaceous sedimentation in the Toney Butte area of the Mitchell inlier, Ochoco basin, central Oregon: Geological Society of America Special Paper 419, p. 1-19.

 

Enlows, H. E., 1976, Petrography of the Rattlesnake Formation at the type area, central Oregon: Ore. Dept. Geol. and Min. Industries, Short Paper 25, 34 p.

 

Enlows, H. E. and Oles, K. F., 1973, Clarno Group, in: Geologic field trips in northern Oregon and southern Washington: Ore. Dept. Geol. and Min. Industries, Bull. 77, p. 15-19.

 

Enlows, H. E. and Parker, D., 1972, Geochronology of the Clarno igneous activity in the Mitchell quadrangle, Wheeler County, Oregon: The Ore Bin, Ore. Dept. Geol. Min. Industries, vol. 34, p. 104-110.

 

Evernden, J. F. and James, G. T., 1964, Potassium-argon dates and the Tertary floras of North America: Amer. Jour. Sci., vol. 262, p. 945-974.

 

Evernden, J. F., Savage, D. E., Curtis, G. H., and James, G. T., 1964, Potassium-argon dates and the Cenozoic mammalian chronology of North America: Amer. Jour. Sci., vol. 262, p. 145-198.

 

Fiebelkorn, R. B., Walker, G. W., MacLoed, N. S., McKee, E. H., and Smith, J. G., 1983, Index to K-Ar age determinations for the State of Oregon: Isochron/West, vol. 37, p. 3-60.

 

Fisher, R. V., 1966, Geology of a Miocene ignimbrite layer, John Day Formation, eastern Oregon: Calif. Univ. Pubs. Geol. Sci., vol. 67, 59 p.

 

Fisher, R. V. and Rensberger, J. M., 1972, Physical stratigraphy of the John Day Formation, central Oregon: Univ. Cal. Pub. In Geol. Sci., vol. 101, p.1-45.

 

Fox, K. F. Jr., 1983, Melanges and their bearing on late Mesozoic and Tertiary subduction and interplate translation at the west edge of the North American Plate: U.S. Geological Survey Professional Paper 1198, p. 1-40.

 

Fritts, S. G. and Fisk, L. H., 1985, The Columbia Basin – 2: Structural evolution of south margin – relation to hydrocarbon generation: Oil and Gas Journal, vol. 83, No. 35, p. 85-90.

 

Gilmore, C. W., 1928, A new pterosaurian reptile from the marine Cretaceous of Oregon: U. S. National Museum Proceedings, no. 2745, vol. 73, article 24.

 

 Gromme, C. S., Beck, M. E., Jr., Wells, R. E., and Engebretson, D. C., 1986, Paleomagnetism of the Tertiary Clarno Formation of central Oregon and its significance for the tectonic history of the Pacific Northwest: Jour. of Geophysical Research, vol. 91, no. B14, p. 14089-14103.

 

Hanson, C. B., 1973, Geology and vertebrate faunas in the type area of the Carno Formation, Oregon: Abstracts and Programs of the Geological Society of America, v. 5, p. 50.

 

Hay, R. L., 1962, Origin and diagenetic alteration of the lower part of the John Day Formation near Mitchell, Oregon: Geol. Soc. Amer., Buddington Volume, p. 191-216.

 

Hay, R. L., 1963, Stratigraphy and zeolite diagenesis of the John Day Formation of Oregon: University of California Publications in Geological Sciences, v. 42, p. 199-262.

 

Hergert, H. L., 1961, Plant fossils in the Clarno Formation, Oregon: Oregon Department of Geology and Mineral Industries, The Ore Bin, vol. 23, p. 55-62.

 

Hildebrand, R. S., 2015, Dismemberment and northward migration of the Cordilleran Orogen: Baja-BC resolved: GSA Today, v. 25, no. 11, p. 4-11.

 

Holz, P. E., Lanphere, M. A., and Swanson, D. A., 1977, Triassic blueschist from northern California and north-central Oregon: Geology, vol. 5, p. 659-663.

 

Hooper, P. R. and Swanson, D. A., 1990, The Columbia River Basalt Group and associated volcanic rocks of the Blue Mountain Province in The Blue Mountains Region of Oregon, Idaho, and Washington, Cenozoic Geology: Walker, G. W. ed, U. S. Geological Survey Professional Paper 1437, p. 63-99.

 

Housen, B. A. and Dorsey, R. J., 2005, Paleomagmatism and tectonic significance of Albian and Cenomanian turbidites, Ochoco basin, Mitchell inlier, central Oregon: Journal of Geophysical Research, v 110, p. 1-22.

 

Jones, D. L., 1960, Lower Cretaceous (Albian) fossils from southwestern Oregon and their paleogeographic significance: Journal of Paleontology, vol. 34, no. 1, p. 152-160.

 

Jones, D. L., Murphy, M.A., and Packard, E. L., 1965, The Lower Cretaceous (Albion) ammonite genera Leconteites and Brewericeras: U. S. Geological Survey, Prof. Paper 503-F.

 

Kleinhans, L. C., Balcells-Baldwin, E. A., and Jones, R. C., 1984, A paleogeographic reinterpretation of some Middle Cretaceous units, north-central Oregon: Evidence for a submarine turbidite system: in Nelsen, T. H., ed., Geology of the Upper Cretaceous Hornbrook Formation, Oregon and California, Pacific Section, Soc. Econ. Paleo. Min., vol. 42, p. 239-257.

 

Lawrence, R. D., 1979, Tectonic significance of regional jointing in Columbia River Basalt, north-central Oregon: Northwest Science, v. 53, No. 1, p. 33-42.

 

Laursen, J. M. and Hammond, P. E., 1974, Summary of radiometric ages of Oregon and Washington rocks through 1972, Isochron/West, No. 9, 32 p.

 

LeBas, M. J., R. W. LeMaitre, A. Streckeisen, and B. Zanettin, 1986, A chemical classification of volcanic rocks based on the total alkali-silica diagram: Journal of Petrology, vol. 27, p. 745-750.

 

Manchester, S. R., 1981, Fossil plants of the Eocene Clarno Nut beds: Oregon Geology, v. 43, no. 6, p. 75-81.

 

Manchester, S. R., 1994, Fruits and seeds of the middle Eocene Nut Beds flora, Clarno Formation, Oregon: Paleontographica Americana, no. 58, p. 1-205.

 

Manchester, S. R., 1995, Yes, we had bananas: Oregon Geology, vol. 57, p. 41-43.

 

Manchester, S. R. and Meyer, H. W., 1987, Oligocene fossil plants of the John Day Formation, Fossil, Oregon: Oregon Geology, vol. 49, p. 115-127.

 

McKee, T. M., 1970, Preliminary report on the fossil fruits and seeds from the mammal quarry of the lower Tertiary Clarno Formation, Oregon: The Ore Bin,  v. 32p. 117-132.

 

Merriam, J. C., 1901, A contribution to the geology of the John Day Basin: Univ. California Bull. of Dept. of Geology, vol. 2, p 269-314.

 

Merriam, J.C. and Gilmore, D. W., 1928, An ichthyosaurian reptile from marine Cretaceous of Oregon: Carnegie Institute of Washington, Contributions to Paleontology, no. 393, p. 1-4.

 

Meyer, H.W. and Manchester, S. R., 1997, The Oligocene Bridge Creek flora of the John Day Formation, Oregon: University of Oregon Publications in Geological Sciences, vol. 141, p. 1-191.

 

Noblett, J. B., 1981, Subduction-related origin of the volcanic rocks of the Eocene Clarno Formation near Cherry Creek, Oregon: Oregon Geology, vol. 43, p. 91-99.

 

Oles, K. F., 1973, Hudspeth and Gable Creek Formations, in: Geologic field trips in northern Oregon and southern Washington, Ore. Dept. Geol. and Min. Industries, Bull. 77, p. 2-14.

 

Oles, K. F. and Enlows, H. E., 1971, Bedrock geology of the Mitchell quadrangle, Wheeler County, Oregon: Ore. Dept. Geol. and Min. Industries, Bull. 72, 62 p.

 

Orr, E. L.,  and Orr, W. N., 1999, Geology of Oregon, fifth ed., Kendall/Hunt, 254 p.

 

Packard, E. L., 1928, A new section of Paleozoic and Mesozoic rocks in central Oregon: Am. Jour. Sci., 5th series, vol. 15, p. 221-224.

 

Packard, E. L., 1956, An Engonoceras from central Oregon: Journal of Paleontology, vol. 30, no. 2, p. 398-402.

 

Peacock, M. A., 1931, Classification of igneous rock series: Journal of Geology, vol. 39, p. 54-67.

 

Popenoe, W. P., Imlay R.W., and Murphy, M. A., 1960, Correlation of the Cretaceous formations of the Pacific Coast (United States and northwestern Mexico): Geological Society of America Bulletin 71, p. 1491-1540.

 

Reidel, S. P., Camp, V. E., Tolan, T. L., et al., 2013, The Columbia River flood basalt province: stratigraphy, areal extent, volume, and physical volcanology: Geological Society of America Special Paper 497.

 

Retallack, G. J. 1991. A field guide to mid-Tertiary paleosols and paleoclimatic changes in the high desert of central Oregon – Parts I and II: Oregon Geology, v. 53, p. 51-66.

 

Retallack, G. J., E. A. Bestland, and T. J. Fremd, 1999, Eocene and Oligocene paleosols of central Oregon: Geol. Soc. Amer. Special Paper SPE344, 192 p.

 

Robinson, P. T., 1969, High-titania alkali-olivine basalt of north-central Oregon, U. S. A., Contributions to Mineralogy and Petrology, vol.22, p. 349-360.

 

Robinson, P. T., 1975, Reconnaissance geologic map of the John Day Formation in the southwestern part of the Blue Mountains and adjacent areas, north-central Oregon: U. S. Geol. Survey Map I-872, 1:125,000.

 

Robinson, P. T. and Brem, G. F., 1981, Guide to geologic field trip between Kimberly and Bend, Oregon with emphasis on the John Day Formation: in Guides to some volcanic terranes in Washington, Idaho, Oregon, and northern California, U. S. Geol. Survey Circ. 838, p. 29-54.

 

Robinson, P. T., Brem, G. F., and McKee, E. H., 1984, John Day Formation of Oregon; A distal record of early Cascade volcanism: Geology, vol. 12, p. 229-232.

 

Robinson, P. T., Walker, G. W., and McKee, E. H., 1990, Eocene(?), Oligocene, and lower Miocene rocks of the Blue Mountains region, U. S. Geol. Survey Prof. Paper 1437, Chap. 3, p. 29-62.

 

Rogers, J. J. W., 1966, Coincidence of structural and topographic highs during post-Clarno time in north-central Oregon: Amer. Assoc. Petroleum Geologists Bull., vol 50, p. 390-396.

 

Rogers, J. J. W. and Novitsky-Evans, J. M., 1977, Evolution from oceanic to continental crust in northwestern U.S.A.: Geoph. Res. Letters, vol. 4, p. 347-350.

 

Rogers, J. J. W. and Novitsky-Evans, J. M., 1977, The Clarno Formation of central Oregon, U.S.A. - volcanism on a thin continental margin: Earth and Planetary Sci. Letters, vol. 34, p. 55-66.

 

Rogers, J. J. W. and Ragland, P. C., 1980, Trace elements in the Clarno Formation of central Oregon and the nature of the continental margin on which eruption occurred: Geol. Soc. Amer. Bull., vol. 91, (Part I) p. 196-198, (Part II) p. 1217-1292.

 

Silberling, N. J. and Jones, D. L., 1984, Lithotectonic terrane maps of the northern Cordillera: U. S. Geol. Survey Open-File Report 84-523, Part C, p. 1-43.

 

Sidle, W. C. and Richers, D. M., 1985, Geochemical reconnaissance of Cretaceous inliers in north-central Oregon: Amer. Assoc. Petroleum Geologists Bull., vol. 69, p. 412-421.

 

Sliter, W. V., Jones, D. L., and Throckmorton, C. K., 1984, Age and correlation of the Cretaceous Hornbrook Formation, California and Oregon: in Nilsen, T. H., ed., Geology of the Upper Cretaceous Hornbrook Formation, Oregon and California: Society of Economic Paleontologists and Mineralogists, vol. 42, p. 89-98.

 

Smith, G. A., 1986, Coarse-grained volcaniclastic sediment: Terminology and depositional processes: Geol. Soc. Am. Bull., vol. 97, p. 1-10.

 

Smith, G. A. 1998, Eocene-Oligocene tectonics, volcanism, and floral change near Gray Butte, central Oregon: Geol. Soc. Am. Bull., vol. 110, p. 759-778.

 

Suayah, I. B., 1990, Rb-Sr systematics in lava flows of the Clarno Formation in north-central Oregon – chronologic and petrologic significance: Isochron/West, no. 56, p. 24-29.

 

Suayah, I. B. and Rogers, J. J. W., 1991, Petrology of the lower Tertiary Clarno Formation in north-central Oregon: The importance of magma mixing: Jour. Geoph. Research, vol. 96, no. B8, p. 13,357-13,371.

 

Swanson, D. A. 1969, Lawsonite blueschist from north-central Oregon: U. S. Geol. Survey Prof. Paper 650-B, p B8-B11.

 

Swanson, D. A., 1969, Reconnaissance geologic map of the east half of the Bend quadrangle, Crook, Wheeler, Jefferson, Wasco, and Deschutes Counties, Oregon: U. S. Geol. Survey Map, I-568, 1:250,000.

 

Swanson, D. A., and Robinson, P. T., 1968, Base of the John Day Formation in and near the Horse Heaven mining district, north-central Oregon, U. S. Geol. Survey Prof. Paper 600-D, p. D154-D161.

 

Swanson, D. A., Wright, T. L., Hooper, P. R., and Bentley, R. D., 1979, Revised Stratigraphic Nomenclature of the Columbia River Basalt Group: U. S. Geological Survey Bulletin 1457-G.

 

Taylor, E. M., 1981, A mafic dike system in the vicinity of Mitchell, Oregon and its bearing on the timing of Clarno-John Day volcanism and early Oligocene deformation in central Oregon: Oregon Geology, vol. 43, no. 8, p. 107-112.

 

Thompson, G. G., Yett, J. R. and Green, K. E., 1984, Subsurface stratigraphy of the Ochoco basin, Oregon: Oregon Department of Geology and Mineral Industries, Oil and Gas Investigations, v. 8, 18p.

 

Walker, G. W., Dalrymple, G. B., and Lanphere, M. A., 1974, Index to potassium-argon ages of Cenozoic volcanic rocks of Oregon: U. S. Geol. Survey Misc. Field Studies Map MF-569.

 

Walker, G. W. and Robinson, P. T., 1990, Cenozoic tectonism and volcanism  of the Blue Mountains region,: U. S. Geological Survey Professional Paper 1437, p. 119-135.

 

Walker, G. W. and Robinson, P. T., 1990, Paleocene(?), Eocene, and Oligocene(?) rocks of the Blue Mountains region,: U. S. Geological Survey Professional Paper 1437, p. 13-27.

 

Walker, G. W. and MacLeod, N. S., 1991, Geologic Map of Oregon: U. S. Geological Survey.

 

Walker, R. G., 1975, Generalized facies models for resedimented conglomerates of turbidite association: Geological Society of America Bulletin, vol. 86, p. 737-748.

 

Waters, A. C., 1961, Stratigraphic and Lithologic variations in the Columbia River Basalt: American Journal of Science, v. 259, p. 583-611.

 

Welton, B. J., 1972, Fossil sharks in Oregon: Ore. Dept. Geol. And Min. Industries, The Ore Bin, vol. 34, no. 10, p. 161-170.

 

White, J. D. L. and Robinson, P. T., 1992, Intra-arc sedimentation in a low-lying marginal arc, Eocene Clarno Formation, central Oregon: Sedimentary Geology, vol. 80, p. 89-114.

 

Wilcox, R. E. and Fisher, R. V., 1966, Geologic map of the Monument quadrangle, Grant County, Oregon. U. S. Geological Survey.  Map GQ-541.

 

Wilkinson, W. D., 1959, Field Guidebook, Field Trip No. 4: Ore. Dept. Geol. and Min. Industries, Bull. 50, p. 78-89.

 

Wilkinson, W. D. and Oles, K. F., 1968, Stratigraphy and paleoenvironments of Cretaceous rocks, Mitchell quadrangle, Wheeler County, Oregon: Am. Assoc. Petroleum Geologists Bull. vol. 52, p.129-161.

 

 

 

Oregon State University Theses

Appel, M. J., 2001, Alkaline and peraluminous intrusives in the Clarno Formation around Mitchell, Oregon: Ramifications on magma genesis and subduction tectonics (MS, major Prof. Taylor), 194 p.

Barnes, T. J., 1978, Geology of the Sand Mountain area, Western Wheeler County, Oregon, (MS, major Prof. Taylor), 119 p.

Bedford, J. W., 1954, Geology of the Horse Mountain area, Oregon (MS, major Prof. Wilkinson), 90 p.

Bowers, H. E., 1952, Geology of the Tony Butte area and vicinity, Mitchell quadrangle, Oregon (MS, major Prof. Wilkinson), 152 p.

Cranswick, M. S., 1980, The stratigraphy, structure, and petrography of Keyes Mountain, Tertiary Upper Clarno Formation, Wheeler County, Oregon (MS, major Prof. Oles), 122 p.

Coleman, R. G., 1949, The John Day Formation in the Picture Gorge quadrangle, Oregon (MS, major Prof. Wilkinson), 221 p.

Dobell, J. P., 1948, Geology of the Antone District, Wheeler County, Oregon, (MS, major Prof. Wilkinson), 102 p.

Howard, C. B., 1955, Geology of the White Butte area and vicinity, Mitchell quadrangle, Oregon (MS, major Prof. Wilkinson), 86 p.

Huggins, J. W., 1977, Geology of a portion of the Painted Hills Quadrangle, Wheeler County, north-central Oregon, (MS, major Prof. Taylor), 129 p.

Irish, E. T., 1955, The Geology of the Juniper Butte area, Spray quadrangle, Oregon (MS, major Prof. Wilkinson), 73 p.

Jarman, C. B., 1973, Clay mineralogy and sedimentary petrology of the Cretaceous Hudspeth Formation, Mitchell, Oregon (PhD, major Prof. Enlows), 173 p.

Kuiper, J., 1988, Stratigraphy and sedimentary petrology of the Mascall Formation, Eastern Oregon, (MS, major Prof. Lawrence) 93 p.

Little, S. W., 1986, Stratigraphy, petrology, and provenance of the Cretaceous Gable Creek Formation, Wheeler County, Oregon, (MS, major Prof. Taylor), 133 p.

Lukanuski, J. N., 1963, Geology of part of the Mitchell quadrangle, Jefferson and Crook Counties, Oregon: (MS, major Prof. Wilkinson), 90 p.

McIntyre, L. B., 1953, Geology of the Marshall butte area and vicinity, Mitchell quadrangle, Oregon (MS, major Prof. Wilkinson), 96 p.

McKnight, B. K., 1964, A stratigraphic study of the marine Cretaceous rocks near Mitchell, Oregon (MS, major Prof. Cummings), 89 p.

Owen, P. C., 1977, An examination of the Clarno Formation in the vicinity of the Mitchell Fault, Lawson Mountain and Stephenson Mountain area, Jefferson and Wheeler Counties, Oregon, (MS, major Prof. Taylor), 166 p.

Patterson, R. L., 1966, Geology of part of the northeast quarter of the Mitchell quadrangle, Oregon (MS, major Prof. Wilkinson), 97 p.

Snook, J. R., 1957, Geology of the Bald Mountain area, Richmond quadrangle, Oregon (MS, major Prof. Wilkinson), 69 p.

Stroh, J. H., 1980, Structure and stratigraphy of Clarno Formation volcanic rocks in the east-central Stephenson Mountain quadrangle, Wheeler County, Oregon (MS, major Prof. Taylor), 128 p.

Swarbrick, J. C., 1954, Geology of the Sheep Mountain area and vicinity, Mitchell, Oregon (MS, major Prof. Wilkinson), 100 p.

Taylor, E. M., 1960, Geology of the Clarno Basin, Mitchell Quadrangle, Oregon (MS, major Prof. Wilkinson), 173 p.

 

OTHER THESES

Kleinhans, L. C., 1991, Submarine turbidite systems, paleogeographic reconstruction, and petroleum source-rock potential of Cretaceous rocks of north-central Oregon: Colo. Sch. Mines (PhD), 453 p.

Lenegan, R. J., 2001, Middle Cretaceous sedimentation and tectonics of the Mitchell inlier, Wheeler County, Oregon: University of Oregon (MS), 125 p.

Lilligren, S. P., 1992, Geology and geochemistry of a portion of the eastern Clarno Formation, Grant County, Oregon: Washington State University (MS), 155 p.

Lindsley, D. H. 1960, Geology of the Spray Quadrangle, Oregon: Johns Hopkins Univ. (PhD).

Novitsky-Evans, J. M., 1974, Petrochemical study of the Clarno Group: Eocene-Oligocene continental margin volcanism of north-central Oregon: Rice University (MA), 97 p.

Noblett, J. B., 1979, Volcanic petrology of the Clarno Formation: Stanford University (PhD), 162 p.

Rice, A. E., 1994, A study of the late Eocene paleoenvironment in central Oregon based on paleosols from the lower Big Basin Member of the John Day Formation in the Painted Hills: University of Oregon (MS), 154 p.

Smith, G. S., 1988, Paleoenvironmental reconstruction of Eocene fossil soils from the Clarno Formation in eastern Oregon: Eugene, Oreg., University of Oregon masterŐs thesis, 167 p.

 

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