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. ) Fig u re A4. i A4.2 A4.3 A4.4 A4.5 A4.6 A4.7 A4.8 A4.9 A4. 10 A4. i 1 A4.12 A4.13 Plots of water content and, shear strength .for gravity core AII60-8:2GC. . . . . . . Plots of water content and shear strength for gravity core 4B, taken on leg 8 of ATLANTIS II Cruise 60 . . . . . . . . . . Plots of water content and shear strength for gravity cores 6A and 6B, taken on ATLANTIS II Cruise 60, leg 8. . . . . . . Plots of water content and shear strength for gravity core AII60-8:7GC. . . . . . . Plots of water content and shear strength for gravity core lOA (AII60, leg 8) . . . Plots of water content and shear strength for gravity core AII60-8:11GC . . . . . . Plots of water content and shear strength for g r a v i ty cor e A I I 60 - 8 : 13 G C . . . .. . . Plots of water content and shear strength for gravity core AI160-8:18GC . . . .. . Plots of water content and shear strength for gi ant gravi ty-core KN25-3GGC. . . . . Plots of water content and shear strength for gi ant pi ston-core KN25-4GPC . . .. . Plots of water content and shear strength for gravi ty core MM-1GC . . . . . . . . . Plots of water content and shear strength. for gravi ty core MM-2GC . . . . . . .. . Plots of water content and shear strength for gravity core MM-3GC . . . . . ..' . . 12 Page 288 290 292 294 296 298 300 302 304 306 308 310 312
\ I ) Table 4. 1 4.2 5.1 5.2 5.3 6.1 6.2 7. 1 7 . 2 8. 1 ALl A2.1 A3.1 LIST OF TABLES Mineralogy of the ~ 2 ~m Size Fraction. . Mineralogy of the 2-62 ~m Size Fraction. Average Rates of Sedimentation for the Greater Antilles Outer Ridge and Surrounding Provinces Since Middle Eocene Time. . . . Average Rates of Sediment Accumulation During Warm and Cool Periods (cm/1000 yr) Radiocarbon Dates and Calculated Sedimentation Rates. . . . . . . . . Summary of Current Meter Moorings. Calculated Volume Transports for Reference Levels at 4300 m and 4700 m . . . . . . . . . Calculated Clay Mineral Composition Versus Sample Concentration. . . . . . .. ... Mineralogy of Suspended Matter Samples. . Comparison of Sediment Composition Above and Below Datum A at Site 28. . . . . Data on Cores Studi ed . Bottom Photographs. . . S us pend e d Par tic u 1 ate Matter S amp 1 e s . 13 Page 91 102 106 111 113 125 151 203 20"8 228 260 264 279
Page 1 and 2: I "a f IMods Hole '" ~ o c.,,~tlOGR
Page 3 and 4: ) )
Page 5 and 6: " \ / )
Page 7 and 8: parent sediment on the eastern oute
Page 9 and 10: esearch. 5 )
Page 11 and 12: Res u 1 ts. . . . . . . . . . . . .
Page 13 and 14: Figure 3.12 Echo-sounding profile (
Page 15: Fi gure 6.14 6. 15 7. 1 7.2 7.3 7.4
Page 19 and 20: CHAPTER I INTRODUCTION The area inv
Page 21 and 22: ) \ .1 Fi gure i. 1. Bathymetry of
Page 23 and 24: ~. ~ 71° 70° tI 68 fJ0 25° 7' 25
Page 25 and 26: ) ) This is expected since most of
Page 27: GENERAL DES CRI PT I ON CHAPTE R I
Page 30 and 31: j
Page 32 and 33: egi onal contours. An area centered
Page 34 and 35: this region. However, all of these
Page 36 and 37: ) ì /
Page 38 and 39: ') ) ) /
Page 41 and 42: '"-, i~ 7t 70° 6f 68 67° 25° 72
Page 43: Fig u r e 3. 2 . CON RA D 10 s e is
Page 46 and 47: sequence corresponds to layered tur
Page 49: ) . .) Figure 3.3. Map showing domi
Page 52 and 53: \ )
Page 55 and 56: "- '''--.- 25° ................. .
Page 57 and 58: ) ) others, 1973), and the upper po
Page 59 and 60: ) Figure 3.5. CONRAD 8 seismic refl
Page 61 and 62: . Q) 3W/L NOI.L~ l( . (Y CI s. :: 0
Page 63 and 64: .) Figure 3.6. Idealized profile al
Page 65 and 66: ) ) a: 0 ~ ~ (J L. Z Q) a: ~ lU UJ
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) ) Figure 3.7. CONRAD 10 seismic r
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i- (Y (1 ~:: en or- LL 47
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) ) THE TRANSPARENT LAYER The distr
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Fi gure 3.8. CH A I N 34 s e ism i
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co . (Y (l So :: O' "r- Li 51
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) 53
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) Figure 3.9. CONRAD 10 seismic ref
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0' (V CJ s. :: O' ... LL 55
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\ J ) Figure 3.10. Seismic reflecti
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or- . (V Q) S- :: rn Li 58
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ì ) Figure 3.11. CONRAD 10 seismic
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l UJ .líliiiP',,:... ¡ '"'" ~ ' ~
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) .I Figure 3.12. Echo-soundi ng pr
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N CV OJ s. :: 01 l. 62
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) ) Figure 3.13. CONRAD 10 seismic
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(' r- (' (j $. :: en 'r- LL 64
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) ) GENERAL LITHOLOGY CHAPTER iv TH
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~ , ) Figure 4.1. General lithology
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.'-/ '..-/ AIr 60-8 A II 60-8 An60~
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) )
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average of 80% lutite (~ 2 ~m) and
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) )
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.\ ! ') )
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ì/ )
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10 m2, with an average value of 1.3
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) ) /
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The laminated zones and overlying p
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) )
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\ j )
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) ) Figure 4.7. Graph of carbonate
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) ) z 0 N O~ E I i ,,_.' i." I ." .
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) ì i Figure 4.8. Curves of carbon
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currents have transported many Fora
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increased dissolution (elevated lys
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TABLE 4.1. MINERALOGY OF THE c 2 ~m
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the following peaks and weighting f
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.,1 ì / ) j
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\ J )
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) )
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) )
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Obvi ous ly, di 1 uti on of the nor
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The m i n era log i c a 1 com po si
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gray 1 uti t e s per s i s t n ear
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) )
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TABLE 5.1. AVERAGE RATES OF SEDIMEN
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and thus the T-Z zonation (Fig. 5.1
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) ) )
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TABLE 5.2. AVERAGE RATES OF SEDIMEN
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Cl z: c: l/ l. i- c: Cl z: o OJ IX
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consolidated (A.J. Silva, pers. com
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) ) _/
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\ ) \ ì ../
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in age, and the ash is probably ass
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') .I \...../
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122 must result from mixing with th
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eas twa rd flow of NADW between 150
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whi ch recorded currents for about
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,) , ,
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ottom photographs in February, 1972
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Several important features were obs
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. \ .' ì ,) ~)
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. ) )
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)j )
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) )
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, " ) ) ./
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'\ ) ) J
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I )
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141 turn north in the western part
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" ) , \ -./)
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. ) ) / )
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145 bottle spacing. An example is t
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~() ~ 3.0 ~ ~ ) ~ ~i. ) .. ~ 2.0 ~i
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) ) Figure 6.6. Silicate ("g-atoms/
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) ) ~ 2.2 ~ 2.0 t2 ~ tt ~" 1.8 .. ~
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,) -) 152 structure persist at and
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) ~) 154 Figure 6.7. Current patter
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) ) 72° DEPTH IN CORR. METERS Fi g
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) ) speeds of 2 cm/sec (the stall s
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) I / Fi gure6. 8. 158 Progressi ve
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" ) / ) 10 19 17 5 5616 M 5801 M N
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) ) ~ 160 Figure 6.9. Polar histogr
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. ì )
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,) B(LOWER) START 22 B(UPPER) START
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) ) Figure 6.11. Polar histogram of
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) 2700 ) 00 1800 F; g u re 6. 11 C
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, ) ) _/ Figure 6.12. 168 Progress
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\ --~ E START 21 5 30 12 XI 21 xu )
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) / i I .~J the flow recorded at cu
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) Figure 6.13. Directions and relat
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') ./ ) ,j 70° 68° 66° ~~oo · "
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Fig u re 6. 14. i 75 Bottom photogr
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S e c t ion 2 (F i g s. 6. 1, 6. 7)
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) )
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') / ) j
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northwest flow along the west flank
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" ) /
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\ )
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filter (0.50 lJmpore size). After f
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. '! ) ) ,./ 2.2 ~ 2.i () '- 2.0 ~
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) ) Figure 7.3. Light-scattering pr
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'\. './. V 23-7 V 23-6 V 25-74 V 25
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extensive erosion on the lower cont
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) \/ (SEM) to determine composition
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\ ) ) Figure 7.4. 195 Scanning elec
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) \ ./
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'i j
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The less than 2 ~m (lutite) fractio
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201 In a sample where additional cl
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TAB LE 7. 1. CALCULATE D CLAY MI NE
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:1 / , ì j
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I ) \ )
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cannot always be accepted at face v
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The apparent enrichment of chlorite
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, \! )
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in favor of the concept that the su
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on the north flank of the far easte
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that enough suspended matter has be
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The following pages describe a mode
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) )
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series of ridges associated with an
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Eocene to 01 i gocene (Monroe, 1968
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:') ¡i )
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\ i / ') ./
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(Table 8.1). The interbedded silts
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229 Chase and Hersey, 1968). The th
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\ ! Figure 8.3. 231 Schematic diagr
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Downslope sedimentation covered the
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) 235 Fi gure 8.4. Sketch showi ng
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'\ l ) ~z w u w a: o ~ wz w o u ~ w
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) / the same event of current-contr
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) Figure 8.5. Idealized representat
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) \ ) d / 'I i II I Ii I i I i I I
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) \ ) formed earlier depositional s
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) ) homogenei ty of the sediments o
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) ) 2 ) Sou t h S lop e - P u e rt
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248 Biscaye, P.E. and S.L. Eittreim
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Ericson, D.B., M. Ewing, G. Wollin
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Hersey, J.B. (1965) Sediment pondin
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McCullough, J.R. and G.H. Tupper (1
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Swallow, J.C. and L.V. Worthington
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" ) )
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259 approximation of the amount of
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s ~ 0 ~ Q) o '- CO 0 U ~ it \f0 Q)
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) )
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Crui se All 11 All 11 AII 60 Leg 8
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TABLE A2.1. BOTTOM PHOTOGRAPHS (Con
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TABLE A2.1. BOTTOM PHOTOGRAPHS (Con
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TAB LE A2. 1. BOTTOM PHOTOGRAPHS (C
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CH 19 CH 19 CH 19 CH 34 CH 34 TABLE
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KN25 KN 25 KN 25 KN 25 TABLE A2.1.
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LL 8 LL 8 LL 8 LL 8 LL 8 SA C ru is
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) )
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s. .. M i. 0 1. " .. QJ ..- N .. C'
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~.. c. 0' 0 .. Q)+l- ~ 0' 0' 0 ~ M
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TABLE A3.1. SUSPENDED PARTICULATE M
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) -) APPENDIX IV PHYSICAL PROPERTIE
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) ) Figure A4.1. Plots of water con
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) \ )
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ì )
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\ )
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') /
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\ ) ) . //
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) ) C\' 0 § to ~ ~ ~ 0 ~ ~ ~ CI Q:
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) /) 295 Figure A4.5. Plots of wate
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'-. ~, 160 SHEAR STRENGTH 30 50 (g/
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) ) Figure A4.6. Plots of water con
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) . ) .
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ì ) )
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\ ) )
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.J , .)
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ì /"
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D \ )
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\ / ) /
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) , )
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) ) 307 Fi gure A4.11. Plots of wat
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"-, ',, WATER CONTENT (% DRY WEIGHT
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) j 309 Figure A4.12. Plots of wate
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) ) ./
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) 312 WATER CONTENT (%DRY WT) SHEAR
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) J BIOGRAPHY Born: Ma rch 19, 1946
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') \ ) ~UWDATORY DISTRIBUTION LIST
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) J
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UNCLASSI FIED 1/31/74 SECURITY CLAS
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