TABLE OF CONTENTS 
Acknowledgments 
Introduction 
Preparation and Storing of the Cores 
Prelirninary Investigations 
Transportation and Deposition of Sediments 
Turbidity Currents 
Cores from Puerto Rico Trough 
Cores from Northwest Atlantic mid-ocean 
canyon 
Evidence in cores for turbidity currents in 
the cable break area 
Micropaleontology, Stratigraphy, and Pleistocene 
Climates 
Recent distribution of planktonic foraminifera 
Climate determinations by planktonic 
foraminifera 
Climatic Optimum 
Diatoms 
Kadiolarians 
Poilen 
Sediments older than Pleistocene 
Geochemical Investigation 
Carbonate analyses 
Natural radiocarbon (C 4) measurements 
Ioniuin method 
Absolute surface area studies 
Paleotemperature determinations 
Organic content 
Chemical and spectographic analyses 
Physical Measurements 
Mechanical analyses 
Density measurements 
Soun? velocity measurements 
Petrography 
Clay minerals 
Volcanic ash zones 
Meteoritic dust 
Rocks 
Publications 
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Zl 
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Zt 
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