166 
INDEX TO NORTH AMERICAN GEOLOGY, 
[BULL. 271. 
Geologic formations described — Continued. 
Cliffwood lignitic sands and clays, Cretaceous, 
New Jersey, Kummel and Knapp, 1. 
Clinton limestone, Silurian, Indiana, 
Foerste, 3. 
Cloverly formation, Cretaceous, Wyoming, 
Darton. 3. 
Coal Measure formations, Carboniferous, Mis- 
souri, Ball and Smith, 1. 
Coal Measures, Carboniferous, Indiana, Hop- 
kins 3. 
Cobleskill shale and dolomite, Silurian, New 
York, Clarke and Luther, 1. 
Cochran conglomerate, Cambrian, North 
Carolina and Tennessee, Keith, 2. 
Cohansey formation. Tertiary, New Jersey, 
Knapp, 1. 
Cohansey formation, Tertiary, New Jersey, 
Kummel and Knapp, 1. 
Collingsworth gypsum, Permian, Oklahoma, 
Gould, 1. 
Colob formation, Utah, Huntington and Gold- 
thwait, 1. 
Colorado group, Cretaceous, South Dakota, 
Todd, 4. 
Colorado group, Cretaceous, South Dakota, 
Todd and Hall, 2. 
Columbia formation, Pleistocene, Atlantic 
coast region, Clark, 2. 
Columbus sand, Cretaceous, New .Jersey, 
Kummel and Knapp, 1. 
Colville series, Tertiary, Alaska, Schrader, 
1. 
Comanche series, Cretaceous, Colorado, Dar- 
ton, 3. 
Comanche series, Cretaceous, Texas, Richard- 
son, 2. 
Concreto shale, Carboniferous, Kansas, 
Adams, Haworth, and Crane, 1. 
Conemaugh formation, Carboniferous, Penn- 
sylvania, Butts, 2. 
Conemaugh formation, Carboniferous, Penn- 
sylvania, Campbell, 4. 
Conemaugh formation. Carboniferous, Penn- 
sylvania. Richardson. 1. 
Connellsville sandstone, Carboniferous, 
Pennsylvania, Richardson, 1. 
Connellsville sandstone member of the Cone- 
maugh formation, Carboniferous, Pennsyl- 
vania, Campbell, 4. 
Connoquenessing sandstone, Carboniferous, 
Pennsylvania, Butts, 2. 
Corwin series, Jura-Cretaceous, Alaska, Schra- 
der, 1. 
Cottonwood formation, Carboniferous, Kan- 
sas, Smith (A. J.), 1. 
Cottonwood limestone, Carboniferous, Kan- 
sas, Prosser and Beede, 1. 
Cox formation, Cretaceous, Texas, Richard- 
son, 2. 
Cranberry granite, Archean, North Carolina, 
Keith, 2. 
Crystal City sandstone, Ordovician, Missouri, 
Ulrich, 2. 
Cuesta diabase, California, Fairbanks, 2. 
Curry member of Vulcan formation, Algon- 
kian, Michigan, Bayley, 1. 
a ' 
Geologic formations described — Continued. 
Cuyahoga formation, Carboniferous, Ohio 
Prosser and Cumings, 1. 
Dakota, Cretaceous, Nebraska, Burchard, 2. 
Dakota formation, Cretaceous, South Dakota, 
Todd, 4. 
Dakota formation, Cretaceous, South Dakota, 
Todd and Hall, 1,2. 
Dakota sandstone, Cretaceous, Black Hills 
region, Jaggar, 1. 
Dakota sandstone, Cretaceous, Black Hills 
region, Wyoming and Colorado, Darton, 3. 
Dakota sandstone, Cretaceous, South Dakota, 
Darton and Smith, 1. 
Day Creek dolomite, Permian, Oklahoma, 
Gould, 1. 
Deadwood formation, Cambrian, Black Hills 
region, Jaggar, 1. 
Deadwood formation, Cambrian, Black Hills 
region and Wyoming, Darton, 3. 
Deep River beds, Miocene, Montana, Doug- 
lass, 1. 
Delaware Mountain formation, Permian, 
Texas, Richardson, 2. 
Delphi dolomite, Permian, Oklahoma, 
Gould, 1. 
Del Rio clay (?), Cretaceous, Texas, Udden, 
1. 
Dennis limestone, Carboniferous, Kansas, 
Adams, Haworth, and Crane, 1. 
Denver formation, Tertiary, Colorado, Dar- 
ton, 3. 
Ditney formation, Carboniferous, Indiana, 
Fuller and Clapp, 1. 
Dog Creek shales, Permian, Oklahoma, 
Gould, 1. 
Doyle shale, Carboniferous, Kansas, Prosser 
and Beede, l. 
Dripping Spring quartzite, Cambrian (?), Ari- 
zona, Ransome, 3. 
Drum limestone, Carboniferous, Kansas, 
Adams. Haworth, and Crane, 1. 
Dudley shale, Carboniferous, Kansas, Adams, 
Haworth, and Crane, 1. 
Dudley shales, Carboniferous, Kansas, Beede 
and Rogers, 1. 
Dunkard formation, Carboniferous, Pennsyl- 
vania, Campbell, 4. 
Dunkard formation, Carboniferous, Pennsyl- 
vania, Stone, 2. 
Durazno formation, Mexico, Hill (R. T.), 2. 
Knston schist, pre-Tertiary, Washington, 
Smith (G. O.), 1. 
Edmonton series, Cretaceous, Canada, 
Lambe, l. 
Edwards limestone, Cretaceous, Texas, Ud- 
den, 1. 
Elbert formation, Devonian, Colorado, Cross 
(W.),l. 
Ellensburg formation, Tertiary, Washington, 
Smith (G. O.), 1. 
Elmdale formation, Carboniferous, Kansas, 
Prosser and Beede, 1. 
El Paso formation, Ordovician, Texas, Rich- 
ardson, 2. 
Emporia system, Carboniferous, Kansas, 
\ 
F 
\ 
Smith (A. J.), 1. 
