CORRELATION 635 



Page Plate 



Correlation by fossil faunas and floras 289 



by fossils, possibilities 291 



by lithologic similarity 519 ♦ 



by means of organic remains 506 



by probabilities depending on rbythm of movements 543 



by unconformities, overlaps, and hiatuses 536 



Illustration from English geology of 334 



implying local tilting and warping 542 



Intercontinental 402 



methods 575 



of dissimilar lithologic units 523 



Recent methods and results of , 403 



tables 27-29 



Value of pelagic species in 517 



Correlations implying complete emergence of continents at frequent 



intervals 545 



stratigraphic, Principles of 505 



Corynoides bed 326 



Corynoides cf . gracilis and calycularis 323 



gracilis 328 



Cosmopolitan faunas 366 



Crab Orchard 28 



Cranberry granite 618 



Creep (see Continental creep). 



Relation to suboceanic spreading of continental platforms. 



lateral 446 



Crinoids, Distribution of 502 



Criteria, Deductions based on gradational. . 477 



of correlation 575 



Paleontologic 481 



structural, in stratigraphic classification 448 



Criteria and principles of stratigraphic classification 394 



Cross, W., on erosion of the Laramie 313 



Crown Point limestone 649 



Crustacea, Distribution of 504 



Crustal foldings 598, 599 



Cryptograptus antennarius Hall , 678 



tricornis ? Carr 678 



Cryptozoon 643, 645, 669 



minnesotense 464. 632, 636, 637, 668 



proliferum 637 



cf. proliferum 634 



steeli 653, 658 



( Jrystal Mountain sandstone 676 



Cumberland Head shale 



( 'uniberland Valley, Beekmantown section 653, 654 



( lurdsvllle limestone 416, 511 



Current scour improbable in interior continental seas 365* 



Opposed by progressive overlap structures 373 



