756 



BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Page 

 Analogies, Discussion of conti- 

 nental 444-446 



Analyses : Ashnola gabbro 341 



— : Calcarenytes 718, 719 



— : Calcilutyte 718 



— : Chopaka basic intrusives 341 



— : Essexite rock 519 



— : Gabbro-diorite 511 



— : Nordmarkite rock 519 



— : Osoyoos granodiorite batholitb .... 344 



— : Pulaskite rock 519 



— : Saint Peter sandstone 238 



— : Serpentine 513 



— : Similkamen granite batbolitb 353 



— : Tinguaite rock 519 



— : Unakite granite 530-531 



Analysis of rock from Sherbrooke, 



Quebec 504 



An an. Diagram of successive cultures 



at 647 



showing section through oasis of . 655 



— cultures, Ethnographic relations 



of 664-668 



— , Tentative dating of the cultures 



of 661-664 



Anderson coal bed, Correlation of 157 



, Location of 157 



Anderson, William, Acknowledgments 



to 382 



— cited on occurrence of striated 



Dwyka on the Tugela river, Natal. 413 



storm-flood channels at Vry- 



heit, Natal 426 



■ — ■, Geological excursion to Ngotshe, 



Vryheit, under direction of 407 



— , member of geological excursion in 



Vryheit, South Africa 421 



— , Term "glacial Ecca conglomerate" 



used by 413 



Andrews, E. B., cited on Allegheny for- 

 mation in Jackson countv, Ohio . . 126 



■ Ohio 116, 120, 122 



■ Vinton county, Ohio . . 125 



— — ■ ■ Washington county, O. 124 



Ames limestone 155-156 



Anderson coal bed 157 



Cambridge limestone 157-158 



■ Conemaugh formation . . . 194. 196, 



197, 198. 199, 200 



— — in Belmont county, Obio. 187 



fossiliferous formations in No- 

 ble county, Ohio 191 



Hocking Valley coal field 121 



occurrence of the Lower Kit- 

 tanning coal bed • 119-120 



Putnam Hill limestone 74 



section at Lawrence, Ohio .... 195 



— — ■ — Muskingum county, Ohio. 189 



• — ■ thickness of the Conemaugh 



formation 188 



— , Term "Ferriferous" used by 73 



Andrews, E. C, quoted on New Eng- 

 land batholiths 373 



— , Title of paper by 373 



Andumow, Title of paper by 594 



Animas glacier, Location, character, 

 and extent of the terminal mo- 

 raine of 254-256 



— ■ (Lower) river, Gravel-covered ter- 

 races of the 268-269 



— valley, Colorado, Character of grav- 



els in 258 



■ — , Lateral moraines in 256-257 



, View of, plate 31 272 



showing terminal moraines 



of plate 30. 270 



• — , Views showing gravel plains 



in plates 28 and 29 . 268 



Annandale granite, Character and com- 

 position of 530 



Page 

 Anthracite fields, Allegheny and Cone- 

 maugh in 216-228 



, Character of intervals in north- 

 ern 226-228 



.Correlation of northern 226, 228 



, Note on references to 216 



— ■ — , Occurrence of fossils in northern. 228 

 , Section near Pottsville in south- 

 ern 216-217 



— — -, Succession and synonymy of coal 



beds in northern 223 



— — , Variations of intervals in south- 



ern and middle 220-222 



Anticlines, Occurrence and character 



of 396 



Aplites, Occurrence of, in Virginia . . . 536 

 Appalachian area, Lower Cambric 



formation in the northern .... 574-575 

 — ■ — , Transgressive overlap in the 



northern 574-575 



— basin, Carboniferous of 65-228 



.Conemaugh formation of.... 154-216 



— coal measures, Methods of grouping 65-69 

 — , Transgressive overlap in southern 



575-578 



Arapahoe glacier, Reference to 259 



Akbuckle limestone, Character, forma- 

 tion, thickness, and age of . . . 578, 618 

 — ■ mountains, Sedimentation in the. 618-619 



— ■ — , Section in the 578-579 



Archbold coal bed. See Shaft coal bed. 

 Archean gneiss near Neihart, Mon- 

 tana, Occurrence of 27 



Arizona, Observations of detrital accu- 

 mulations in 275-276 



— , Topographic provinces in 276 



— , Volcanic cones in, Character of ... . 722 

 — , western, Topographic sketch map of, 



plate 32. 275 

 Arkansas valley, Colorado, Glaciation 



in 252 



, Pleistocene deposits in 271 



Arkose sandstones, Occurrence and 



thickness of 357-359 



Armstrong county, Pennsylvania, Sec- 

 tion in 99-100 



— report, Reference to 92 



Armuchee chert, Occurrence and thick- 

 ness of 611 



Arnold, Ralph, Geological reconnais- 

 sance of the coast of the Olympic 



peninsula, Washington 451-468 



— , Titles of papers by 453, 731 



Artesian well at Askabad 658-660 



Ash, Sources of Hawaiian volcanic. 490-492 

 Ashburner, C. A., cited on Allegheny 

 formation in Elk county, Pennsyl- 

 vania 96 



Forest county, Penna . 96 



McKean county, Penna. 95 



Tioga county, Penna . 89 



■ — coal bed in Elk county, Penna . 95 



■ — ■ — ■ — • correlation of the Dagus and 



Clermont coals 94 



■ — Scrubgrass coal bed 95 



— • — ■ — ■ section of limestone in the 



northern anthracite field 227 



anthracite fields 216. 217 



■ — Dag-us shaft 95-96 



Mahoning in Elk county, Penn- 

 sylvania 172 



Mammoth coal bed 219 



Ashnola gabbro, Analysis of 341 



, Composition and character of 341-342 



, Correlation of 357 



, Occurrence of 336 



— — , Origin of 358 



, Specific gravity of 341 



Asia, Cause of aridity of central 639 



