CONTENTS 



Page 



Preface 1 1 



The Physiography and Geology of the Coastal Plain Province of Virginia. 



By Wm. Bullock Clark and Benjamin LeRoy Miller 13 



Introduction 13 



Geological literature of the Virginia Coastal Plain 19 



Physiography of the Virginia Coastal Plain 46 



Introductory 46 



Submarine division 46 



General characteristics 46 



OflF-shore beaches and bars 47 



Coastal lagoons 47 



Subaerial division 48 



General characteristics 48 



Terraces 48 



Lafayette terrace 49 



Sunderland terrace 49 



Wicomico terrace 50 



Talbot terrace 50 



Recent terrace 51 



Sand dunes 52 



Drainage 52 



Stream courses 53 



Tidewater estuaries 54 



Minor streams 56 



The Dismal Swamp 56 



Geology of the Virginia Coastal Plain 59 



Introductory 59 



Mesozoic 61 



Cretaceous 61 



Lower Cretaceous. By Edward W. Berry 61 



The Potomac group 61 



The Patuxent formation 63 



Name . 63 



Stratigraphic relations 63 



Lithologic character . . . 63 



Strike, dip, and thickness 64 



Paleontologic character 65 



Areal distribution 65 



The Arundel formation (not recognized in Virginia) 66 



The Patapsco formation 67 



Name ■ 67 



Stratigraphic relations 67 



Lithologic character 67 



Strike, dip, and thickness 68 



Paleontologic character 68 



Areal distribution 68 



Detailed sections 69 



Potomac River 69 



Rappahannock River 73 



James River '4 



Appomattox River 79 



Sections along the Richmond, Fredericksburg and Potomac 



Railroad 80 



Upper Cretaceous ^' 



Cenozoic ^^ 



Tertiary 88 



Eocene ^^ 



The Pamunkey group 88 



The Aquia formation 90 



Name ^^ 



Stratigraphic relations 90 



