eorcsaee
TABLE OF CONTENTS
Page
INTRODUCTION
METHODS OF COLLECTION AND MEASUREMENT
RESULTS AND DISCUSSION
Depth Gradient of Gamma Spectra
12
Old Soil
l2
Litter and Guano
14
Young Soil
18
Depth Gradient of sr?°
RADIOAUTOGRAPHS
Young Soil
21
25
25
Undisturbed
25
Eroded
25
Old Soil
28
Horizontal Movement
28
Buried Organic Layers
30
Roots
30
Pumice
31
CONCLUSIONS
33
SUMMARY
35
REFERENCES
37