The Ordovician system in Canada : correlation chart and explanatory notes /

Lithostratigraphy of upper Ordovician strata exposed in Kentucky /
by: Weir, Gordon W. (Gordon Whitney), 1922-2011
Published: (1984)

The Ordovician system of the East European Platform and Tuva (southeastern Russia) : correlation charts and explanatory notes /
Published: (1994)

Lithostratigraphy and depositional environments of the Lexington Limestone (Ordovician) of central Kentucky /
by: Cressman, Earle Rupert, 1923-
Published: (1973)

Ordovician of the Great Basin : fieldtrip guidebook and volume for the Seventh International Symposium on the Ordovician System, Las Vegas, Nevada, USA, June 1995 /
Published: (1995)

Revision of Upper Ordovician and Silurian rocks of the Northern Peninsula of Michigan /
by: Kesling, Robert V. (Robert Vernon), 1917-2005
Published: (1975)

Petrology of the upper Ordovician and lower Silurian rocks in the central Appalachians /
by: Horowitz, Daniel H.
Published: (1965)

Overthrust Ordovician and the Nannie's Peak ring dike, Lone Mountain, Elko County, Nevada /
by: Lovejoy, Donald Walker, 1931-
Published: (1958)

Cambrian and Ordovician rocks of southern Arizona and New Mexico and westernmost Texas /
by: Hayes, Philip T. (Philip Thayer), 1923-
Published: (1975)

Ordovician and Silurian Phi Kappa and Trail Creek Formations, Pioneer Mountains, central Idaho : stratigraphic and structural revisions, and new data on graptolite faunas /
by: Dover, James H.
Published: (1980)

The Trenton group (Upper Ordovician series) of eastern North America : deposition, diagenesis, and petroleum /
Published: (1989)

The Trenton group (Upper Ordovician series) of eastern North America : deposition, diagenesis, and petroleum /
Published: (2013)

Upper Ordovician and Silurian stratigraphy in Sequatchie Valley and parts of the adjacent valley and ridge, Tennessee /
by: Milici, Robert C., 1931-
Published: (1977)

Secondary porosity and hydrocarbon production from the Ordovician Ellenburger Group of the Delaware and Val Verde basins, West Texas /
by: Ijirigho, Bruce Tajinere
Published: (1981)

Field trip guidebook for the Upper Mississippi valley, Minnesota, Iowa, and Wisconsin /
Published: (1987)

Basin-wide diagenetic patterns : integrated petrologic, geochemical, and hydrologic considerations /
Published: (1997)

A stratigraphic and sedimentologic analysis of some Lower and Middle Silurian clastic rocks of the north-central Appalachians /
by: Smith, Norman Dwight
Published: (1967)

On the tremadoc rocks in the neighbourhood of St. David's, South Wales and their fossil content /
by: Hicks, Henry
Published: (1873)

The Ordovician graptolites of Spitsbergen /
by: Cooper, Ronald A.
Published: (1982)

A global analysis of the Ordovician-Silurian boundary /
Published: (1988)

Lithostratigraphy of upper Ordovician strata in Alabama /
by: Neathery, Thornton Lee
Published: (1985)

Cambrian and Ordovician strata of northeastern Illinois.
by: Buschbach, T. C. (Thomas Charles), 1923-
Published: (1964)

Upper Cambrian and Lower Ordovician rocks in Kansas /
by: Keroher, Raymond P., 1899-
Published: (1948)

Correlation of Ordovician limestone at Salona, Clinton county, Pennsylvania /
by: Whitcomb, Lawrence, 1900-
Published: (1932)

Stratigraphy of the Cambrian and Ordovician rocks of east-central Alaska /
by: Brabb, Earl E., 1929-
Published: (1967)

Precambrian and Lower Ordovician rocks in east-central Idaho.
Published: (1975)

Late Ordovician-Early Silurian strata in the central United States and the Hirnantian stage /
by: Amsden, Thomas William
Published: (1986)

Stratigraphy and geologic history of Middle Ordovician rocks of central Tennessee.
by: Wilson, Charles William, 1905-
Published: (1962)

The Shawangunk Formation (Upper Ordovician(?) to Middle Silurian) in eastern Pennsylvania /
by: Epstein, Jack Burton, 1935-, et al.
Published: (1972)

The Middle and Upper Ordovician rocks of Michigan.
by: Hussey, Russell C. (Russell Claudius), 1888-
Published: (1952)

Upper Cambrian-Lower Ordovician Notch Peak Formation in western Utah /
by: Hintze, Lehi F.
Published: (1988)

Carbonates of the Lower and Middle Ordovician in central Pennsylvania /
by: Chafetz, Henry S.
Published: (1969)

Early Ordovician (Arenig) stratigraphy and faunas of the Carmarthen district, south-west Wales /
by: Fortey, Richard A.
Published: (1978)

Stratigraphy and structure of Middle and Upper Ordovician rocks in the Sedgwick Basin and adjacent areas, south-central Kansas /
by: Adkison, W. L.
Published: (1972)

Trilobites, biostratigraphy, and lithostratigraphy of the McKenzie Hill limestone (lower Ordovician), Wichita and Arbuckle Mountains, Oklahoma /
by: Stitt, James H.
Published: (1983)

Middle Ordovician detailed stratigraphic sections for western Utah and eastern Nevada.
by: Webb, Gregory W.
Published: (1956)

Cambrian-Ordovician geology of the Ottawa region /
Published: (1992)