TRANSACTIONS FIRST GEOLOGICAL CONFERENCE OF THE G.S.T.T. (1986)

TRANSACTIONS FIRST GEOLOGICAL CONFERENCE OF THE G.S.T.T. (1986)

TABLE OF CONTENTS

ADDRESS by Mr. Lennox Algoo, President of the Geological Society of Trinidad and Tobago .......................................................v

INAUGURAL ADDRESS by the Honourable Patrick Manning, Minister of Energy and Natural Resources .. ....... ................................vi

LIST OF DELEGATES ........................................................ix

PAPERS AND ABSTRACTS:

TECTONICS, IGNEOUS AND METAMORPHIC GEOLOGY

1. Presentation of a New Tectonic Map of Trinidad and Tobago - K. Persad ....... 1

2. Neotectonics of Southern Tobago - G. Wadge and D. Hudson .......... 7

3. Structure of the Melajo Clay near Arima,Trinidad, and Strike-Slip Motion in the El Pilar Fault Zone - P. Robertson, K. Burke and G. Wadge .......... 21

4. Metasomatism in the Tobago Volcanic Group, Tobago, W.I. - T.A. Jackson and T.E. Smith ........... 34

5. The Development of Successive Structures in the Mount Dillon Formation of Tobago, West Indies - R. Ahmad, S. Babb, J. De Four and D. Shuriand ................. 40

6. Structure and Composition of the "Acoustic" Basement of the North Coast Complex, Trinidad - C. Ramroop ................... 53

SEDIMENTOLOGY, PALEONTOLOGY AND PALYNOLOGY

7. Sedimentological and Geophysical Studies in the Oropouche Bank Area, Gulf of Paria, Trinidad - D. Hudson, S. Bachew and E. A. Williams ............... 67

8. The Impact of Beach Sand Mining at Goldsborough Bay, Tobago - S. Bachew and N. Lewis .................................................... 78

9. Foraminiferal Paleoenvironments from the Barremian to Maestrichtian of Trinidad, W.I. - E.A.M. Koutsoukos and K. A. Merrick ................................. 85

10. A Preliminary Investigation of the Brigand Hill Limestone, Brigand Hill Quarry, Plum Mitan Road - S. Wharton, A.. Dupigny and J. Keens-Dumas......................... 102

11. Plio-Pleistocene Palynology and Visual Kerogen Studies, Trinidad, W.I., with Emphasis on the Columbus Basin - A. Lamy ..................................... 114

12. Radiolarian Stratigraphy of the Hermitage Quarry, Trinidad, West Indies - F. Maurrasse (Abstract only) ..................................... 128

ENGINEERING GEOLOGY

13. Landslide and Flood Distribution in the West Coastal Area of Trinidad: the Role of Geology - D. Bertrand, H. Romano and C.T. Rogers ............................. 129

14. The Parrylands F. 15 / DM-13 Landslide - a Case Study - C.T. Rogers and A. Chow-Gabbadon ......................................... 140

PETROLEUM GEOLOGY AND GEOCHEMISTRY

15. An Application of Seismic Stratigraphy in Trinidad, West Indies - E. A. Williams ........ 149

16. A Model for Oil Exploitation in Trintoc's Point Fortin Anticlinal Area North of the Los Bajos Fault - D.G. Charles and P. Cosgrove ...................... 168

17. Petrophysical Study of the Samaan Field Shaly Sands, Offshore Trinidad - W.V.C. DeLandro ....................................... 183

18. Application of Well Logs to the Recognition of Geological Features - R.K. Cornell, J. Pelissier-Combescure, F.R. Aquing and P.L.B. Payne ......................... 206

19. Thermal History Modeling in Petroleum Exploration: Examples from Southern Trinidad - K. Rodrigues ......................................... 217

20. Petroleum Geochemistry Applied to Oilfield Development, Offshore Trinidad - R.L. Ames and L.M. Ross ......................................... 227

21. Geochemistry of the Northern Basin Sediments of Trinidad - H.B. Kuarsingh ........... 237

SYMPOSIUM - GEOLOGY OF THE SOUTHEASTERN CORNER

OF THE CARIBBEAN

22. Plate Tectonic Evolution of the Southeast Caribbean - A.E.S. Bertrand and W.G. Bertrand ......................................... 242

23. Evolution of the Southern Caribbean since Early Miocene - Y.P. Aggarwal ............. 261

24. Neotectonic Aspects of the Southern Caribbean Plate Boundary - C. Schubert .......... 265

25. Cenozoic Tectonics of the Southeastern Caribbean and Trinidad - R.C. Speed .......... 270

26. Gravity and Geoid Anomalies of the Caribbean Region: A Progress Report - C. Bowin ........................... 281

27. Geological Evolution of the Northern Agua Salada Subbasin, East Falcon, Venezuela - M. L. Diaz de Gamero .................................................... 288

28. Paleo-Oceanography of the Venezuelan Basin - W. Hay ............................ 302

29. Ongoing Studies on the Mesozoic Rocks of Trinidad, particularly those of the Northern Range - J.B. Saunders (Abstract only) ........................................ 308

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