Copyright by Nysha Chaderton 2009 - The University of Texas at ...

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DIRECTIONS TO OUTCROPS 1. Chalky Mount Ridge Appendix From Bridgetown take the Spring Garden Highway NW to the roundabout at the bottom University Hill. Turn right up University Hill and this road becomes the ABC highway. At Warrens roundabout take the second left exit to travel east and stay on the ABC highway until you reach the Jackson Roundabout. Take the first left exit towards Jackson and onto Highway 2. Stay on Highway 2 (for about 4 km) until you reach Haggatts. At the intersection follow Chalky Mount sign that points East and up a hill. At the top of this Hill there will be a blue and yellow rum shop on the right and a Chalky Mount Primary School on the left. Turn left at the school and follow the road until it ends. Park vehicle on Eastern side of the road, do not park in the clearing because quite large buses turn around there. Chalky Mount Ridge should be visible to the West across a valley. Hike West to Chalky Mount Ridge. Portions of Chalky Mount outcrop are also accessible on the Eastern side of the valley. 2. Sleeping Giant Ridge This ridge can be reached by hiking approximately 1km North East from where the Chalky Mount Village road ends. This route is dangerous as a result of the friable nature of the outcrops. A safer route is to follow directions above and stay on Highway 2 until you reach BellePlaine. At BellePlaine turn right (onto the Ermy Bourne Highway- also locally called “The East Coast Road) and stop just north of Barclays Park. This will take you to the “East Coast Road “ outcrop which is the eastern face of Sleeping Giant Ridge. The upper portions of the ridge can be reached from hiking up and over the eastern face in a westerly direction. 3. Ermy Bourne Ridge Approximately 500 m north of the Eastern face of Sleeping Giant Ridge. Outcrop marked by a sign in rock with a short write up about “Ermy Bourne”. 4. Spa Hill From Mount All, drive East to junction at the bottom of Mount All. Turn right (south). Take left at Fruitful Hill and follow the road until it ends. Park vehicle and hike past ruins of old house (Spa House) in a northeasterly direction. You will reach a thicket with trees and a great deal of brush- it may be fenced in some areas. A cutlass (machete) is 147
necessary to clear a path. Keep to a northeasterly path for about 300 m, outcrop will be visible when brush clears. 5. Mount All From Bridgetown take the Spring Garden Highway NW to the roundabout at the bottom University Hill. Turn right up University Hill becomes the ABC highway. At Warrens roundabout take the second left exit to travel East and stay on the ABC highway. The next roundabout is Jackson Roundabout. Take the first left exit towards Jackson onto Highway 2. Stay on Highway 2 until you reach Mount All. Outcrop is located on a dirt track on the north side of the road ~ 750 m from the top of Mount All. Track is often over-grown and it is best to park at the crest of Mount All and walk down to track. Wear reflective clothing if possible and keep an eye out for swift moving cars and buses. 6. Inner Turner’s Hall Ridge From Mount All continue on Highway 2. Turn left (West) at Belle Hill and follow the road until it ends. Park vehicle and hike west into woods. About 100 m into the woods take path on the left, in a southerly direction. Hike South for about 250 m until you reach the Inner Turner’s Hall Ridge Outcrop. 7. Walker’s Ridge From Mount All follow Highway 2. Highway 2 will travel east and at BellePlaine it curves towards the West. Stay on Highway 2 past Shorey Village to Breedy’s. Stop at Greenland Clay Tile Factory, located in Breedy’s. Park on grass in front of factory offices and ask at office for permission to hike up the hill. Walk behind clay factory proper and veer slightly westward to find the Walker’s Ridge Lower section. Walker’s Ridge Upper section is located immediately North of Walker’s Ridge Lower. 7.b Breedy’s The entrance to the road is 100 m South of the clay tile factory entrance. Turn left and follow dirt road into Breedy’s Shale Quarry. Sandstone beds are visible at the Southern end of the quarry. Be very careful and do not visit this location when it is or has been raining as there is a danger of falling rock and of getting vehicles stuck. 148
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Copyright by Nysha Chaderton 2009
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Sedimentation within the Tobago For
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Acknowledgements I would like to th
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Table of Contents List of Tables ..
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List of Tables Table 2.1: Latitudes
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Figure 2.14: Planar parallel lamina
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Figure 2.42: Coarse, cobble and peb
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Figure A.3a: Chalky Mount Ridge mea
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1. Development history of the south
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Formation. This interpretation requ
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DATA AND METHODOLOGY Extensive work
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DESCRIPTIVE METHODOLOGY Each sectio
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Two or more channel complexes stack
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These poorly sorted sands are later
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East Coast Road Although the East C
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succession of interlaminated siltst
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Mount All The beds of the Mount All
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Lobes are non-channelized bodies, 3
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Sandy units are the most resistant
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SUMMARY DEPOSITIONAL SETTING OF THE
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Chapter Three: Petrographic Analysi
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had not been buried deeply or long
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Feldspars Calcium Plagioclase Felds
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Authigenic Minerals Authigenic mine
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amounts of chlorite and kaolinite c
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Sample: WRA 16 This sample was take
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cementation is observed. A number o
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COMPARISON WITH PREVIOUS WORK Punch
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K feldspar preservation to slightly
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CONCLUSIONS 1. No quartz cementatio
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The highest point of the island, is
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STRATIGRAPHIC FRAMEWORK ONSHORE TO
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STRUCTURAL FRAMEWORK OF THE BARBADO
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Sandy material is primarily quartz
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esult of extension caused by flexur
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1994). The origin of the Oceanic Fo
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Oligocene-age sediments are deposit
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The observation of channel geometri
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Pudsey, (1982) interpreted smectite
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The interpretation of the Scotland
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Figure 1.2: Convergent margins arou
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NSF Study Lines Grenada St. Kitts S
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Figure 2.2: Generalized vertical se
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Figure 2.4: Detailed Geological map
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Figure 2.6: Photographs and illustr
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Figure 2.8: Bedsets on the channel
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S 50 m Figure 2.10: Photo-panorama
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Figure 2.13: Laminated silt and mud
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Figure 2.16a: Measured section at C
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Figure 2.16c: Measured section at C
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Figure 2.18: Correlation of section
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Figure 2.21: Parallel laminated sil
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Wach, Vincent and Chaderton March 2
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Page 111 and 112: Figure 2.24: Channel element identi
Page 113 and 114: WRB S N Fresh rock face exposed by
Page 115 and 116: Figure 2.28: Photograph of Diplocra
Page 117 and 118: Figure 2.31: Conglomerate with eros
Page 119 and 120: Figure 2.33: Thalassinoides trace f
Page 121 and 122: Figure 2.35: Mount All measured str
Page 123 and 124: Figure 2.37: Medium grained sand be
Page 125 and 126: Figure 2.38b: Inner Turner’s Hall
Page 127 and 128: Figure 2.38d: Inner Turner’s Hall
Page 129 and 130: Figure 2.39: Spa Hill measured stra
Page 131 and 132: Juniper Ridge, California Scotland
Page 133 and 134: Figure 3.1: Fractured quartz grain
Page 135 and 136: SGRF 1C SGRF 9C Figure 3.5: Measure
Page 137 and 138: Figure 3.8: Photo of sample SGRF 11
Page 139 and 140: Figure 3.10: Photo of sample SGRF 1
Page 141 and 142: Figure 3.12: Photo of sample WRA 16
Page 143 and 144: Figure 3.14: Photo of sample WRB 8
Page 145 and 146: Figure 3.16: Photo of sample ITR 9
Page 147 and 148: Figure 3.19: Photo of sample CMRA s
Page 149 and 150: Figure 3. 23: Composition of Scotla
Page 151 and 152: Figure 4.1: Base map showing seismi
Page 153 and 154: Figure 4.3: Channels within Unit Fi
Page 155 and 156: Figure 4.5: Seismic reflection prof
Page 157 and 158: Figure 4.7 Isochron maps of the old
Page 159 and 160: Figure 4.9: Illustration of the Spe
Page 161: Figure 4.11: Illustration of Hypoth
Page 165 and 166: 2006 Figure A.2a: Lidar Ridge measu
Page 167 and 168: Figure A.3b: Chalky Mount Ridge mea
Page 169 and 170: 2006 Figure A.4a: Chalky Mount Ridg
Page 171 and 172: 2006 Figure A.4c: Chalky Mount Ridg
Page 173 and 174: 2006 Figure A.6: Chalky Mount Ridge
Page 175 and 176: Figure A.7b: Measured Section of Ch
Page 177 and 178: 2006 Figure A.8a: Sleeping Giant Ri
Page 179 and 180: 2006 Figure A.9: Sleeping Giant Rid
Page 181 and 182: 2006 Figure A.11: Sleeping Giant Ri
Page 183 and 184: Figure A.13a: Sleeping Giant Ridge
Page 185 and 186: 2006 Figure A.14a: Coast Road Below
Page 187 and 188: 2006 Figure A.14c: Coast Road Below
Page 189 and 190: 2006 Figure A.14e: Coast Road Below
Page 191 and 192: 2006 Figure A.14g: Coast Road Below
Page 193 and 194: 2006 Figure A.15: Ermy Bourne Ridge
Page 195 and 196: 2006 Figure A.17: Spa Hill Fold Mea
Page 197 and 198: 2006 Figure A.19: Ermy Bourne Ridge
Page 199 and 200: Figure A.20b: Walkers Ridge Measure
Page 201 and 202: Figure A.21: Walkers Ridge Measured
Page 203 and 204: Figure A.22b: Walkers Ridge Measure
Page 205 and 206: 2007 Figure A.23b: Inner Turner’s
Page 207 and 208: 2007 Figure A.23d: Inner Turner’s
Page 209 and 210: Framework grains Quartz Feldspar Ro
Page 211 and 212: CRIMES, T.P., 1977, Trace fossils o
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MONTGOMERY, S.L., BARKER, C.E., SEA
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RICHARDS, M., BOWMAN, M., and READI
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WEBER, J.C., DIXON, T.H., DEMETS, C
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