Middle Devonian Formations in the Subsurface of Northwestern Ohio
STATE OF OHIO DEPARTMENT OF NATURAL RESOURCES DIVISION OF GEOLOGICAL SURVEY Horace R. Collins, Chief Report of Investigations No. 78 MIDDLE DEVONIAN FORMATIONS IN THE SUBSURFACE OF NORTHWESTERN OHIO by A. Janssens Columbus 1970 SCIENTIFIC AND TECHNICAL STAFF OF THE OHIO DIVISION OF GEOLOGICAL SURVEY ADMINISTRATIVE SECTION Horace R. Collins, State Geologist and Di v ision Chief David K. Webb, Jr., Geologist and Assistant Chief Eleanor J. Hyle, Secretary Jean S. Brown, Geologist and Editor Pauline Smyth, Geologist Betty B. Baber, Geologist REGIONAL GEOLOGY SECTION SUBSURFACE GEOLOGY SECTION Richard A. Struble, Geologist and Section Head William J. Buschman, Jr., Geologist and Section Head Richard M. Delong, Geologist Michael J. Clifford, Geologist G. William Kalb, Geochemist Adriaan J anssens, Geologist Douglas L. Kohout, Geologis t Frederick B. Safford, Geologist David A. Stith, Geologist Jam es Wooten, Geologist Aide Joel D. Vormelker, Geologist Aide Barbara J. Adams, Clerk· Typist B. Margalene Crammer, Clerk PUBLICATIONS SECTION LAKE ERIE SECTION Harold J. Fl inc, Cartographer and Section Head Charles E. Herdendorf, Geologist and Sectwn Head James A. Brown, Cartographer Lawrence L. Braidech, Geologist Donald R. Camburn, Cartovapher Walter R. Lemke, Boat Captain Philip J. Celnar, Cartographer David B. Gruet, Geologist Aide Jean J. Miller, Photocopy Composer Jean R. Ludwig, Clerk- Typist STATE OF OHIO DEPARTMENT OF NATURAL RESOURCES DIVISION OF GEOLOGICAL SURVEY Horace R. Collins, Chief Report of Investigations No. 78 MIDDLE DEVONIAN FORMATIONS IN THE SUBSURFACE OF NORTHWESTERN OHIO by A. Janssens Columbus 1970 GEOLOGY SERVES OHIO CONTENTS Page Introduction . 1 Previous investigations .. .. .. .. .. .. .. .. .. 1 Study methods . 4 Detroit River Group . .. .. .. ... .. ... .. .. .. .. .. .. .. ... .. 6 Sylvania Sandstone ..........................
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