CONTENTS 



PAGE 



Character of the deposits . . . . . . . . . 141 



Source of materials .......... 141 



Relation of the Cretaceous to older deposits ...... 143 



Structure ............ 143 



Conditions during deposition ........ 145 



Distribution ............ 146 



Gay Head ........... 146 



Clay pit near Menemsha Pond ....... 146 



Menemsha creek .......... 146 



Squibnocket . . . . . . . . . . . 147 



Nashaquitsa cliffs .......... 147 



Peaked Hill, pit no. 1 147 



Roaring Brook .......... 147 



Peaked Hill, pit no. 2 . .147 



North Road Valley . . .147 



Makonikey ........... 148 



Form of the surface . 148 



Age as shown by fossils 148 



The Matawan marine fauna ..... 149 

 Report on collections of Upper Cretaceous invertebrate fossils from 



Marthas Vineyard, by L. W. Stephenson . . 150 



Fossil plants . 155 



Plants described by Hollick . 155 



Report on Upper Cretaceous flora of Marthas Vineyard, by 



Edward W. Berry 157 



Tertiary system, by J. B. Woodworth 157 



Absence of early Tertiary formations 157 



Miocene series ........... 158 



The greensand 158 



Character ..... ..... 158 



Oxidation 158 



Thickness 159 



Unconformable contact with cretaceous clay .... 159 



Fossils . . . . - • 159 



Pliocene series ........... 160 



Aquinnah conglomerate (earliest Pleistocene) . . . . . 160 



Quaternary system, by Edward Wigglesworth 162 



Pleistocene series . - . . . . . . . - .162 



Early Pleistocene deposits (pre-Gardiner formations) . . .162 



Gay Head cliffs section 163 



Aquinnah conglomerate . . . . . . .163 



Dukes boulder bed . 163 



Mannetto formation 164 



Evidence of pre-Gardiners age of deposits . . .164 



The post-Mannetto period of folding .... 164 



Nashaquitsa cliffs . . . . . . . . • 165 



Weyquosque formation . 165 



Moshup till member of Jameco formation and overlying 



beds . . .166 



Nortons Point ......... 167 



