LISTS GEOLOGIC FORMATIONS. 
285 
Altamaha grit, Tertiary, Georgia : Harper, 
1077. 
Altamont limestone. Carboniferous, Kan- 
sas : Wboster, 2636. 
Altuda granite, Texas: Udden, 2409. 
American Flat latite, Colorado : Cross ct 
ah, 607. 
Americus beds, Carboniferous, Kansas : 
Wooster, 2636. 
Ames Knob formation, Silurian, Maine : 
Smith at ah, 2241. 
Ames limestone, Carboniferous, Pennsyl- 
vania : Butts. 368; Stevenson, 2294; 
Woolsey, 2634. 
Ames limestone, Carboniferous, Pennsyl- 
vania, Ohio, and West Virginia : Gris- 
wold and Munn. 1048. 
Ames limestone. Carboniferous, West Vir- 
ginia: Grimsley, 1044, 1046. 
Ames limestone. Carboniferous, Pennsyl- 
vania : Raymond, 1990. 
Amsden formation, Carboniferous, Wyo- 
ming: Darton, 042, 644, 647; Fisher, 
873. 
Anacacho limestone, Cretaceous, Texas: 
Udden, 2408. 
Anaktuvuk series, Cretaceous, Alaska : 
Brooks, .'il3. 
Anamosa substage, Silurian, Iowa : Beyer 
and Williams, 2:54. 
Anderson-Spartanburg zone, Archean, 
South Carolina: Sloan, 2218. 
Andrews schist, Cambrian, North Carolina : 
Keith, 1352. 
Animikie, Michigan : Gordon and Lane, 985. 
Animikie formation, pre-Cambrian, Ontario : 
Silver, 2212. 
Animikie sediments, pre-Cambrian, Ontario : 
Coleman, 530. 
Animikie series, Minnesota : Leith, 1557. 
Animus formation, Eocene, Colorado and 
New Mexico : Shaler, 2176. 
Ankareh formation, Carboniferous, Utah : 
Boutwell, 271. 
Anona chalk, Cretaceous, Arkansas : 
Veatch, 24:56. 
Antietam formation. Cambrian, Maryland: 
Clark and Mathews, 188. 
Antietam sandstone, Cambrian, Pennsyl- 
vania : Stose, 2318. 
Antietam sandstone, Cambrian, West Vir- 
ginia : Grimsley, 1044. * 
Antrim shales, Devonian, Michigan : 
Cooper, 575 ; Lane, 1516. 
Apishapa formation, Cretaceous, Colorado : 
Darton. 648 : Fisher, 869. 
Aquia formation, Eocene, Maryland: Clark 
and Mathews, 488; Shattuck et ah. 2193. 
Aquia formation. Tertiary. Maryland and 
Delaware : Miller, 1749, 
Aquia formation. Tertiary, Virginia: Clark 
and Miller, 489. 
Arapahoe formation, Cretaceous, Colorado: 
Darton, 648. 
Aretunis limestone, Carboniferous, Nevada : 
Lawson, 1526. 
Arkadelphia clay, Cretaceous, Arkansas : 
Veatch, 2436. 
Arpin quartzite, pre-Cambrian, Wisconsin: 
Weidman, 2512. 
Arriban series, Miocene, New Mexico : 
Keyes, 1390. 
Arundel formation, Jurassic?, Maryland: 
Clark and Mathews, 488. 
Arundel formation, Jurassic? and Cre- 
taceous. Maryland: Shattuck et ah, 2193. 
Ashbed group. Cambrian, Michigan : Lane 
and Seaman, 1518. 
Ashley-Cooper marls, Eocene, South Car- 
olina : Sloan, 2218. 
Ashnola gabbro, Paleozoic, Cascade Moun- 
tains : Daly, 632. 
Aspen formation, Cretaceous, Wyoming: 
Schultz, 2151. 
Athens, Carboniferous, Appalachian region : 
Stevenson, 2295. 
Athens shale, Ordovician, Tennessee : Keith, 
1354. ' 
Athens shale, Ordovician, Virginia : Bass- 
ler, 158. 
Atlas formation, California: Lawson. 1528. 
Atoka formation, Carboniferous, Arkansas: 
Collier, 556. 
Aubrey limestone, Carboniferous, Montana : 
Reagan, 1999. 
Aubrey limestone, Carboniferous, Utah : 
Lee, 1544. 
Austin chalk, Cretaceous, Texas : Ries, 
2058; Udden, 2408. 
Aylmer formation, Ordovician, Canada : 
Raymond, 1987. 
Bad River gabbro, Algonkian, Michigan : 
Cordon and Lane, 985. 
Bagley andesite, Jurassic, California : Dil- 
ler. 721. 
Baird formation, Carboniferous, California : 
Diller, 721. 
Balaklala rhyolite. pre-Devonian. Cali- 
fornia: Diller, 721. 
Baltic conglomerate, Algonkian, Michigan : 
Lane. 1509. 
Baltimore gneiss, Algonkian, Maryland : 
(Mark and Mathews, 488. 
Bandera shale, Pennsylvanian, Kansas ; 
Schrader and Haworth, 2144 ; Wooster, 
26:56. 
Banff limestone, Carboniferous, Alberta: 
Dowling, 736. 
Banff shale (lower). Carboniferous. Al- 
berta : Dowling, 736. 
Banff shale (upper), Permo-Triassic, Al- 
berta : Dowling, 736. 
Bangor limestone. Carboniferous, Alabama: 
Butts, 370. 
Bangor (Chester) limestone, Mississippian, 
Alabama : Smith. 2220. 
Barclay limestone. Carboniferous, Kansas: 
Wooster, 26.'56. 
Barkersville gabbro, Triassic?, North Caro- 
lina : Keith, 1354. 
Barnwell bubr sands. Eocene, South Caro- 
lina: Sloan, 2218. 
