CONTENTS 



PAGE 



PREFACE 17 



INTRODUCTION : 21 



DEVELOPMENT OF KNOWLEDGE CONCERNING THE PHYSICAL 

 FEATURES OF ST. MARY'S COUNTY, WITH BIBLIOG- 

 RAPHY. By George Burbank Shattuck 25 



Introductory 25 



Historical Review 25 



The History of Geographic Research 26 



The History of Geologic Research 31 



BiBLIOGEAPHT 38 



THE PHYSIOGRAPHY OF ST. MARY'S COUNTY. By George Burbank 



Shattuck 55 



Introductory 55 



Topographic Description 56 



The Drainage of St. Mary's County 59 



The Structure of the Coastal Plain 61 



Topographic History 61 



The Lafayette Stage 61 



The Sunderland Stage 62 



The Wicomico Stage 63 



The Talbot Stage 65 



The Recent Stage 66 



THE GEOLOGY OF ST. MARY'S COUNTY. By George Burbank 



Shattuck 67 



Introductory 67 



The Miocene 68 



The Chesapeake Group 68 



The Calvert Formation 68 



Areal Distribution 69 



Strike, Dip, and Thickness 70 



Character of Materials 71 



Stratigraphic Relations 71 



Sub-Divisions 71 



