6Q4 



INDEX 



Esopus grit, 402 

 Eucalyptocrinus crassus, 395 

 Euconulus fulvus, 644 

 Eugnathus athostamus, 513 

 Eumetria marcyi, 437 

 Eunicites gracilis, 386 



varians, 386 



Eupachycrinus magister, 469 

 Euphoberia armigera, 466 

 Europe, Cambrian of, 356 



Carboniferous of, 430, 456 



Cretaceous of, 527, 542 



Devonian of, 411 



Eocene of, 562 



Jurassic of, 506 



Miocene of, 588 



Oligocene of, 576 



Ordovician of, 375 



Permian of, 472 



Pliocene of, 608 



Silurian of, 394 



Trias of, 491 

 European ice sheet, 615 

 Eurypterus, 400 

 Eurypterus fischeri, 401 



mansfieldi, 467 

 Eutaw formation, 534 

 Evanston formation, 539 

 Evaporation, 28 

 Exfoliation, 265 

 Exogyra (Ostrea) virgula, 510 

 Extinct lakes, 202 

 Extra-terrestrial deposits in sea, 198 



Falls, 89 



Fanfold, 276 



Faulting in western mountains, 541 



Faulting, Quaternary, 659 



Faults, 281 



and earthquakes, 214 



and folds, 282 



distributive, 283 



hade of, 282 



heave of, 282 



normal, 281 



significance of, 283 



throw of, 282 



thrust, 282 

 Fault-scarp, 282 

 Fauna defined, 346 

 Favosites occidens, 398 

 Feldspar, 253, 254 

 Felsites, 262 

 Fenestella emaciata, 419 



parvulipora, 398 



Fenneman, N. M., cited, 173 

 Ferns, Devonian, 423 



Pennsylvanian, 450, 460 

 Ficus inaequalis, 547 

 Fiords, 152, 153 

 Fisher, O., cited, 226 

 Fishes, Cretaceous, 554 



Devonian, 418 



Jurassic, 510, 512, 513 



Mississippian, 438-440 



Onondagan, 415 



Ordovician, 386 



Silurian, 399, 401 

 Fissure eruptions, 229 

 Fissuridea alticosta, 597 



griscomi, 597 

 Flaxseed iron ore, 289 

 Flints, 268 



Flood plain deposits, in 

 Flood plains, material of, 113 

 Floods, 57 

 Florissant beds, 575 

 Flow structure, 247, 248 

 Flowing wells, 54 

 Fluviatile deposits, 652 

 Fluvio-glacial deposits, 631 

 Folding, 220 

 Folds, erosion of, 95 

 Foliation, 294 

 Foliation of ice, 126 

 Foraminifers, Cretaceous, 555 



Eocene, 572 



Forbesiocrinus wortheni, 434 

 Fordilla troyensis, 361 

 Formation, defined, 269 

 Fort Union series, 539 

 Fossils, 267 

 Fraas, E., cited, 575 

 Fredericksburg formation, 524 

 French Broad River, 105 

 Fulgar spiniger, 597 

 Fuller, M. L., cited, 34 

 Fusulina limestone, 457 

 Fusulina secalicus, 468, 469 

 Fusus (?) interstriatus, 573 



texanus, 530 



Gabbroids, 263 



Gabbros, 260, 262 



Galena limestone, 369 



Gangamopteris cyclopteroides, 478 



Gangamopteris flora, 477 



Ganoids, 422 



Garnet, 257 



Gas and oil in Ohio, 374 



