CONTENTS 



Page 



CONVERSION FACTORS, U.S. CUSTOMARY TO METRIC (SI) 6 



I INTRODUCTION 7 



II SUBMERSIBLE VIBRATORY CORER 7 



1. Vibracore Components 8 



2. Coring Performance 11 



III RECORDKEEPING AND CORE PROCESSING 11 



1. Core Record 11 



2. Core Handling and Marking 11 



3. Core Sampling 12 



4. Core Logging. . 12 



IV SUMMARY 14 



APPENDIX 



A A DEVICE FOR CUTTING SEDIMENT CORE LINERS 15 



B SEDIMENT SAMPLE CARDING TO FACILITATE COMPARATIVE CORRELATION. . . 17 



TABLE 



Vibracore information summary . • . . » 10 



FIGURES 



1 Vibratory core apparatus with a 20-foot-long barrel used in 



a geological survey off the Galveston, Texas, coast 9 



2 Vibratory core rig with a 20-foot-long barrel used in a geological 



survey in Lake Erie 10 



3 Examples of core logs used to describe the sedimentary sequence 



and lithology. 13 



