Published Abstracts

 

1.         Pigott, J.D., 1977, Paleoenvironmental geology of soils as an aid to the analysis of aboriginal settlement patterns in the western Hueco Bolson, West Texas:  Geol. Soc. Amer. Ann. Mtg., p. 1130-1131.

 2.        Pigott, J.D., 1978, Interstitial water chemistry of Jamaican reef sediments--Redox model for submarine cementation:  Amer. Assoc. Petrol. Geol. Bull., v. 62, p. 554.

 3.        Pigott, J.D. and F.T. Mackenzie, 1979, Phanerozoic ooid diagenesis: A signature of paleo-ocean and -atmospheric chemistry:  Geol. Soc. Amer. Ann. Mtg., p. 495-496.

 4.            Mackenzie, F.T. and J.D. Pigott, 1980, Global tectonic control of longterm cycling of carbon:  26 Congress Geologique International, Paris: II, p. 506.

 5.        Pigott, J.D., J. Schoonmaker, and F.T. Mackenzie, 1980, Phanerozoic carbonate diagenesis, a new model:  Amer. Assoc. Petrol. Geol. Bull., v. 64, p. 764-765.

 6.        Pigott, J.D., 1981, Global tectonic control of secular variation in Phanerozoic sedimentary rock/ocean/atmosphere chemistry:  Amer. Assoc. Petrol. Geol. Bull., v. 65, p. 971.

 7.        Pigott, J.D. and F.T. Mackenzie, 1982, Phanerozoic ocean-atmosphere-sediment history: Secular variations and tectonic control:  Eleventh International Congress on Sedimentology, Hamilton, Canada, p. 114.

 8.        Pigott, J.D., 1982, Carbonates, evaporites, red beds and organic shales - global tectonic model for their chemical cycling and hydrocarbon potential:  Amer. Assoc. Petrol. Geol. Bull., v. 66, p. 618.

 9.        Perry, C.L. and J.D. Pigott, 1983, Wagwater Trough, Jamaica: Model for aulacogen transgressive sedimentation:  Amer. Assoc. Petrol. Geol. Bull., v. 67, p. 532.

10.            Neese, D.G. and J.D. Pigott, 1984, In situ rock/water geochemistry of Holocene marine radial ooid environment, Lizard Island, Great Barrier Reef, Australia:  Amer. Assoc. Petrol. Geol. Bull., v. 68, p. 511.

11.            Neese, D.G. and J.D. Pigott, 1984, In situ rock/water geochemistry of a Holocene marine tangential ooid environment, Brown's Cay, Bahamas:  Geol. Soc. Amer. Ann. Mtg., p. 609.

12.            Trumbly, N.I. and J.D. Pigott, 1984, Wrench fault tectonics in North New Guinea Basin, Papua New Guinea:  Amer. Assoc. Petrol. Geol. Bull., v. 68, p. 535-536.

13.       Ru, Ke and J.D. Pigott, 1985, South China Sea tectonic evolution and hydrocarbon potential: New geological and geophysical constraints:  Amer. Assoc. Petrol. Geol. Bull., v. 69, p. 303.

14.            Trumbly, N.I. and J.D. Pigott, 1985, Origin and diagenesis of beachrock, Discovery Bay, Jamaica:  Amer. Assoc. Petrol. Geol. Bull., v. 69, p. 313.

15.            Neese, D.G. and J.D. Pigott, 1985, In situ rock/water geochemistry of Holocene radial and tangential ooid sediment, Baffin Bay, Texas:  Amer. Assoc. Petrol. Geol. Bull., v. 69, p. 291.

16.            Roberts, S.M. and J.D. Pigott, 1985, Subsurface facies model for a shallow-water, transitional clastic-carbonate environment: Martha Brae delta-reef complex, Falmouth, Jamaica:  Geol. Soc. Amer. Ann. Mtg., p. 701.

17.            Roberts, S.M. and J.D. Pigott, 1986, Model for transgressive stratigraphic play types: Holocene Martha Brae delta-reef complex, Falmouth, Jamaica: Amer. Assoc. Petrol. Geol. Bull., v. 70, p. 640.

18.            Roshong, C.G. and J.D. Pigott, 1986, Hydrocarbon reservoir exploration strategies applied to Paleozoic calcite sea: Example from Mississippian Chester "J" Limestone, Southwest Trivoli Field, Oklahoma:  Amer. Assoc. Petrol. Geol. Bull., v. 70, p. 641.

19.       Pigott, J.D. and D.G. Neese, 1986, In situ geochemistry of ooid genesis: I. Theoretical methodology: Twelfth International Congress on Sedimentology, Canberra, Australia, p. 241.

20.            Neese, D.G. and J.D. Pigott, 1986, In situ geochemistry of ooid genesis: II. Lizard Island, Australia, analytical applications:  Twelfth International Congress on Sedimentology, Canberra, Australia, p. 225.

21.       Pigott, J.D. and A.B. Cullen, 1986, Post Jurassic tectonic evolution of Papua New Guinea: A preliminary model:  Transactions, Amer. Geophys. Union, v. 67, p. 1233.

22.       Ru, Ke and J.D. Pigott, 1987, Tectonic evolution of the northern margin of the South China Sea:  Amer. Assoc. Petrol. Geol. Bull., v. 71, p. 608.

23.       Willis, L. and J.D. Pigott, 1987, Spectral analysis of the Phanerozoic global sea level curve:  Geol. Soc. Amer. Ann. Mtg., p. 805.

24.       Pigott, J.D., M.N. Austin, and L.A. Willis, 1988, Comparative anatomy of changes in post-Jurassic global sea level and spreading rates:  Amer. Assoc. Petrol. Geol. Bull., v.72, p. 236.

25.       Austin, Mike, J.D. Pigott, and J.M. Forgotson, Jr., 1989, Seismic stratigraphy of the Upper Pennsylvanian Swope Limestone of Kansas and Oklahoma: Quantification of thin bed porosity through attribute analysis:  Amer. Assoc. Petrol. Geol. Bull., v. 73, p. 329.

26.       Pigott, J.D., R. Mazariegos, R. and J.M. Forgotson, Jr., 1989, Carbonate seismic stratigraphy of the Cretaceous Paso Caballos Basin, Guatemala: New structures in a "structureless" basin:  Amer. Assoc. Petrol. Geol. Bull., v. 73, p. 399.

27.            Skinner, J., J.D. Pigott, and S.M. Roberts, 1989, Ultra-high resolution seismic stratigraphy of the Martha Brae Delta-Reef Complex, Falmouth, Jamaica:  Amer. Assoc. Petrol. Geol. Bull., v. 73, p. 399-400.

28.       Pigott, J.D., R.K. Shrestha, and R.A. Warwick, 1989, Young's modulus from AVO inversion:  Society of Exploration Geophysicists 59th Ann. Mtg., v. 2, p. 832-835.

29.            Warwick, R.A. and J.D. Pigott, 1990, Interpretation of lateral variations in carbonate             porosity by detailed stacking velocity analysis:  Mississippian bioherm example, Hardeman             Basin, Texas, in Estimation and Practical Use of Seismic Velocities, EAEG/SEG Research             Workshop Proceedings, Queens College, Cambridge, England, p. 460-469.

30.       Pigott, J.D., R.K. Shrestha, and R.A. Warwick, 1990, Direct determination of carbonate             reservoir porosity and pressure from AVO inversion, S.E.G. 60th Ann. Int. Mtg., v.2, p.             1533-1536.

31.            Loreau, J.P., P. Cross, and J.D. Pigott, 1990, Diagenetic stratigraphy and polyphased             dolomitization of Tithonian carbonates relative to a sequence boundary:  ODP Site 639,             Offshore Spain, International Association of Sedimentologists Meeting Program,             Nottingham, England.

32.       Pigott, J.D., J.M. Forgotson, and J.D. Skinner, 1990, Ground penetrating radar imaging             of sequence boundaries and lithofacies variations in a mixed siliciclastic carbonate             depositional sequence, Third International Conference on Ground Penetrating Radar,             Lakewood, Colorado, U.S.G.S. Open-File Report 90-414, p. 26.

33.       Pigott, J.D., R.K. Shrestha, and R.A. Warwick, 1991, Carbonate reservoir characterization             using seismic velocity and amplitude variation with offset analysis:  Hardeman Basin,             Texas, Test Case, A.A.P.G. Bulletin, v. 75, p. 654.

34.            Neese, D.G., J.D. Pigott, and M.A. Yukler, 1993, Roche-mere du reservoir du Bassin de             Paris, potentiel comme fonction de la susidence tectonicque, 4th European Association of             Petroleum Geoscientists Program.

35.       Pigott, J.D., D.G. Neese, and A.B. Cullen, 1993, Northern New Guinea hydrocarbon potential:  New constraints from tectonic subsidence analysis and seismic stratigraphy, A.A.P.G. Program, New Orleans, p. 166.

36.       Pigott, J.D., D.G. Neese, and A.B. Cullen, 1993, Northern New Guinea hydrocarbon potential:  New constraints from tectonic subsidence analysis and seismic stratigraphy, Society of Exploration Geophysicists (This paper was selected as one of the best papers of A.A.P.G. for presentation at 1993 Society of Exploration Geophysicists in Washington.)

37.       Pigott, J.D., R. Shrestha, Ye Wang, J. Forgotson, and J. McDonald, 1993 (Extended Abstract) Reservoir characterization using 3D AVO:  Case Study--U.S. Gulf Coast.  Part I.  Acquisition and Processing, Proc. Society of Exploration Geophysicists/CPS International Geophysical Conference and Exposition, Beijing, PRC.

38.       Pigott, J.D., Ye Wang, R. Shrestha, J. Forgotson, and J. McDonald, 1993, (Extended Abstract) Reservoir characterization using 3D AVO:  Case Study-U.S. Gulf Coast.  Part II.  Interpretation Proc. Society of Exploration Geophysicists/CPS International Geophysical Conference and Exposition, Beijing, PRC.

39.       Pigott, J.D. and A.B. Cullen, 1994, Plate boundary reorganization as a requisite mechanism for terrane accretion:  An example from the Late Cenozoic of Northern New Guinea:  A.A.P.G. Internat. Conf. Kula Lumpur, Malaysia, A.A.P.G. Bull., v. 78, p. 1158.

40.       Pigott, J.D. and Carsten Geiger, 1994, Neogene carbonate exploration play concepts for Northern New Guinea:  New iteration from field work and seismic stratigraphy along the Northern New Guinea Fault Zone:  A.A.P.G. International Conf. Kula Lumpur, Malaysia, A.A.P.G. Bull., v. 78, p. 1158-1159.

41.       Pigott, J.D., R.R. Wang, and A. Hosie, 1994, Seismic stratigraphy of the Guajira Basin Cuiza platform, offshore Colombia:  A.A.P.G. Ann. Mtg. Denver, p. 235.

42.       Pigott, J.D. and Abdelazim Ibrahim, 1995, Salt basin seismic sequences as a signature of near to far field tectonics; Example:  High Island, Northern Gulf of Mexico: A.A.P.G. Ann. Mtg. Houston, p. 76A.


43.       Pigott, J.D., Eshetu S. Gebretsadik, and Ahmed Alahdahl, 1995, Halokinetic associated crustal stretching in the Southern Red Sea: New observations of the basement and sedimentary cover from refraction constrained reflection seismic stratigraphy, Proc. 12th International Conference on Basement Tectonics '95, Norman, Ok. U.S.A., p. 38-39.

44.            Geiger, C., J.D., J.M. Forgotson, Jr., A. Ibrahim, and H. Yousif, 1995, Subsalt source rock maturity in the sudanese Red Sea, A.A.P.G. International Conference, Nice, France, A.A.P.G. Bull., v. 79, p. 1215.

45.       Pigott, J.D., G. Tefferra, J.M. Forgotson, Jr., E. Gebretsadik, and A. Alahdal, 1995, Red Sea heat flow through time, A.A.P.G. International Conference, Nice, France, A.A.P.G. Bull., v. 79, p. 1243.

46.       Pigott, J.D., and D. Neese, 1995, Ogaden basin subsidence history:  Another key to the Red Sea-Gulf of Aden Tectonic Puzzle, A.A.P.G. International Conference, Nice, France, A.A.P.G. Bull., v. 79, p. 1243

47.            Geiger, C., J.D. Pigott, J.M. Forgotson, Jrs., E. Gebretsadik, and A. Alahdal, 1995, Red Sea heat flow through time, A.A.P.G. International Conference, Nice, France, A.A.P.G. Bull., v. 79, p. 1243.

48.       Pigott, J.D., E. Gebetretsadik, and kA. Alahdahl, 1995, Refraction constrained seismic stratigraphy of the Southern Red Sea:  Halokinetic response to pulsed crustal stretching, Proc. Rift Sedimentation and Tectonics in the Red Sea-Gulf of Aden Region, Sana'a, Yemen, p. 48.

49.       Pigott, J.D., G. Teferra, and E. Gebretsadik, 1995, Thermal state of the Red Sea through space and time,  Proc. Rift Sedimentation and Tectonics in the Red Sea-Gulf of Aden Region, Sana'a, Yemen, p. 49.

50.       Pigott, J.D., and K. Feglo, 1996, Optimizing Red Sea imaging through tau-p F-K processing:  Northern Sudan example, Society of Exploration Geophysicists International Exposition and Sixty-Sixth Annual Meeting, Denver, Colorado, Technical Program Vol. II, p. 1674-1678.

51.       Pigott, J.D. and S.V. Tadepalli, 1996, Direct determination of clastic reservoir porosity and pressure from AVO inversion: Society of Exploration Geophysicists International Exposition and Sixty-Sixth Annual Meeting, Denver, Colorado, Technical Program Vol. II, p. 1759-1762.

52.       Pigott, John D. and Eshetu Gebretsadik, 1997, Subsalt seismic stratigraphy of southern offshore Eritrea:  New evidence for spatially and temporally varying rifting episodes, AAPG Ann. Conv. Dallas, 6-9 April.

53.       Pigott, John D. and Girmachew Teferra, 1997, Paleo-heatflow of the Red Sea-Gulf of Suez:  Delineating hypothermal hydrocarbon fairways through time and space, AAPG Ann. Conv. Dallas, 6-9 April.

54.       Pigott, John D. E.S. Gebretsadik, and A. Alahdahl, 1998, Halokinetic associated crustal stretching in the southern Red Sea: New observations of the basement and sedimentary cover from refraction constrained reflection seismic stratigraphy, in J.P. Hogan and M.C. Gilbert (eds), Basement Tectonics 12, p. 283-284.

55.       Pigott, John D., Shrestha, Raj, Tadepalli, Sharma, and Alan Warwick, 1998, In Situ subsurface reservoir porosity-pressure prediction from Young’s modulus extracted from seismic AVO inversion, in Pressure Regimes in Sedimentary Basins and their Prediction, American Association of Drilling Engineers Industry Forum, 2-4 September, Houston, Texas, p. 3.5.1

56.       Saleh, Azzeldeen, Pigott, John D. and Mohamed M. El-Awady, 1998, Petrophysically constrained seismic wavelet processing in the Northwestern Desert, Egypt:  Shushan Basin, in Africa/Middle East Second International Geophysical Conference & Exposition, Cairo, Egypt,  17-19 February, p. 82-86.

57.            Ibrahim, Abdelazim, and John D. Pigott, 1998, Post-stack model-guided seismic imaging and interpretation of salt and subsalt structures, Egyptian Red Sea, in Africa/Middle East Second International Geophysical Conference & Exposition, Cairo, Egypt, 17-19 February, p. 56-57.

58.            McLean, R. and J.D. Pigott, 1998, Subthrust interpretation constrained by fault plane reflectivity correlation:  Post-stack time migration and pre-stack depth migration modeling, in  Sixty-eighth Annual Meeting & Exposition of the Society of Exploration Geophysicists, New Orleans, La., p. 677-680.

59.            Alahdal, Ahmed O., Pigott, John D. and Baraba, Rasheed S., 2000, Hydrocarbon Economic Risk Analysis in Tectonically Analogous Sedimentary Basins:  Red Sea Rift Basin Example, EOS, Transactions, American Geophysical Union, Vol. 81, No. 48, 28 November 2000, p. F1127.

60.            Gebretsadik, Eshetu S., Pigott, John D., Alahdal, Ahmed O., and Tefera, Girmachew L., 2000, Crustal Stretching Redundancy Determination in Quantifying Two Dimensional Beta:  Southern Red Sea Example, EOS, Transactions, American Geophysical Union, Vol. 81, No. 48, 28 November 2000, p. F1204.

61.       Eissa, M., J.D.Pigott, A.A. Hassan, and M.M. Awady, 2001, Wavelet estimation from the borehole:  Offshore East Bakr, Gulf of Suez, Egypt, Abstract Volume of Second International Symposium on Geophysics, 19-20 February, Tanta University, Egypt, p. 40.

 

PUBLISHED PAPERS:

 

 1.        Pigott, J.D., 1977, Early diagenesis of dissolved sulfur and nitrogen species in Jamaican reef sediments (determined by in situ sampling): Proc. Third Inter. Coral Reef Symposium, p. 533-540.

 2.            Dulaney, A.R. and J.D. Pigott, 1977, Preliminary technological analysis of El Paso Brownware and design for further research in E.S. Carter, ed., A Cultural Resource Inventory and Assessment of McGregor Guided Missile Range, Part II: Special Archeological Studies; Tex. Arch. Survey Res. Rept., 65/II, Austin, Texas p. 263-290.

 3.        Pigott, J.D., 1977, Reconnaissance geology: Implications for the analysis of human occupation in E.S. Carter, ed., A cultural Resource Inventory and Assessment of McGregor Guided Missile Range, Part III: Botanical and Geological Studies; Tex. Arch. Survey Res. Rept., 65/III, p. 97-158.

 4.        Pigott, J.D. and A.R. Dulaney, 1977, Lithic material from McGregor Range: Mineral types and their source areas in E.S. Carter, ed., A Cultural Resource Inventory and Assessment of McGregor Guided Missile Range, Part II: Special Archaeological Studies;Tex. Arch. Survey Res., 65/II, Austin, Texas, p. 85-126.

5.         Pigott, J.D., 1978, Pedology and paleopedology of the Western Hueco Bolson for the past two thousand years:  A tool for the analysis of aboriginal settlement patterns: Appendix E., in Whalen, M.E., Settlement Patterns of the Western Hueco Bolson; Publications in Anthropology 6, El Paso Centennial Museum, p.209-229.

 6.            Mackenzie, F.T. and J.D. Pigott, 1981, Tectonic controls of Phanerozoic sedimentary rock cycling: J. Geol. Soc. London, Vol. 138, p. 183-196.

 7.        Pigott, J.D., N.I. Trumbly, and M. O'Neal, 1983, The Northern New Guinea wrench fault system: A manifestation of Late Cenozoic interactions between the Australian and Pacific plates:  Transactions of the Third Circum-Pacific Energy and Mineral Resources Conference, Stuart T. Watson, Ed., Amer. Assoc. Petrol. Geol., p. 613-620.

 8.        Pigott, J.D., 1985, Assessing source maturity in frontier basins: Importance of time, temperature, and tectonics:  Amer. Assoc. Petrol. Geol. Bull., v. 69, no. 8, p. 1269-1274.

 9.        Pigott, J.D. and N.I. Trumbly, 1985, Distribution and origin of beachrock cements, Discovery Bay (Jamaica):  Proc. Fifth Inter. Coral Reef Congress, Tahiti: III, p. 270-280.

10.       Ru, Ke and J.D. Pigott, 1986, Episodic rifting and subsidence in the South China Sea:  Amer. Assoc. Petrol. Geol. Bull., v. 70, p. 1136-1155.

11.       Pigott, J.D. and L.S. Land, 1986, Interstitial water chemistry of Jamaican reef sediment: sulfate reduction and submarine cementation:  Marine Chemistry, v. 20, p. 60-84.

12.       Pigott, J.D., 1986, Time, Temperature, and Tectonics: Their assessment as a means of evaluating shallow oil and gas potential in frontier areas in Richard F. Meyer, ed., Shallow Oil and Gas Resources, Proceedings of the first International Conference, p. 35-44.

13.       Pigott, John D., and John S. Wickham, 1986, Geological alnd geophysical transfer between U.S. universities and developing countries in Richard F. Meyer, ed., Shallow Oil and Gas Resources, Proceedings of the first International Conference, p. 639-644.

14.       Sheu, D.-D., A. Shakur, J.D. Pigott, D.A. Wisenburg, J.A. Brooks, and H. Roy Krouse, 1988, Sulfur and oxygen isotopic compositions of dissolved sulfate in the Orca Basin: Implications for origin of the high-salinity brine and oxidation of sulfides at the brine-seawater interface:  Marine Geology, v. 78, p. 303-310.

15.       Pigott, J.D., 1988, Coupled ion-selective electrode measurement of aqueous carbonate and bicarbonate ion activities:  Analytical Chemistry, v. 61, p. 638-640.

16.       Cullen, A.B. and J.D. Pigott, 1989, Post-Jurassic tectonic evolution of Papua New Guinea:  Tectonophysics, v. 162, p. 291-302.

17.       Pigott, J.D. and J.E. Laughlin, 1989, Carbon dioxide budget of a modern tropical lagoon:  Proceedings of the Sixth International Coral Reef Symposium, Townsville, Australia, 1988, v. 2, p. 569-575.

18.       Pigott, J.D., 1992, Can carbonates be source rocks for commercial petroleum deposits? Considerations from a rate perspective, Oklahoma Geological Survey Circular 93, p. 251-256.

19.       Austin, M.N., J.D. Pigott, and J.M. Forgotson,  1992, Seismic stratigraphic analysis of the upper Pennsylvanian Swope limestone of Kansas and Oklahoma:  An integrated approach to thin bed reservoir prediction, In:  Thomas D. Cavanaugh, ed., Integrated Exploration Case Studies, North America; Geophysical Society of Tulsa 1991 Spring Symposium, p. 73-83.

20.       Pigott, J.D. and N. Sattayarak, 1993, Aspects of sedimentary basin evolution assessed through tectonic subsidence analysis, example:  Northern Gulf of Thailand, Jour. of Southeast Asian Ear. Sci., 8, #1-4, p. 407-420.

21.            Ramon, J.C., J. Pigott, A. Fajardo, and K. Bayer, 1993, Modelamiento de Cuencas- Un nuevo enfoque en analisis de Cuencas:  Ejemplos en la subcuenca de ortega y el Piedemonte Llanero, Proc. of V. Congreso Colombiano del Petroleo, Santafe de Bogota., p. 69-72.

22.       Pigott, J.D., 1994, Irian Jaya-Papua New Guinea hydrocarbon exploration:  Constraints from regional distribution of geothermal gradients and heat flow: Proceedings Indonesian Petroleum Association Twenty-Third Annual Convention, Jakarta, Indonesia, 1, p. 75-100.

23.       Pigott, J.D. and R. Ke, 1994, Basin superposition on the northern margin of the South China Sea, Tectonophysics, vol. 235, p. 27-50.

24.       Pigott, J.D., 1996, A seismic classification scheme for clastic shelf wedges (deltas), in M.Oti and G. Postma, eds., Geology of Deltas, A.A.Balkema Press, Rotterdam, Chapter 2, p.17-29. 

25.       Pigott, J.D. and Neese, D.N., In Press, Seismic stratigraphy of the Northern New Guinea Basin: Insight into the tectonic evolution of a segmenting basin:  Proceedings Indonesian Petroleum Association Twenty-Fourth Annual Convention, Jakarta, Indonesia.

26.       Pigott, J.D., In Press, On the seismic classification-characterization of deltas: Emphasis-sand quality and geometry, O.G.S. Symposium on Fluvial-dominated deltaic reservoirs in the southern Midcontinent, Oklahoma Geological Survey Circular.

27.            Anderson, O.L. and J.D. Pigott, 1996, 3D seismic technology: Its uses, limits, & legal ramifications: Rocky Mtn. Miner.Law Institute, Vol. 42, Chapter 16, p. 1-146.

28.       Pigott, J.D., G. Teferra, and Y.A. Abdelhady, 1996, Late Cenozoic paleo-heatflow of the Red Sea:  Regional implications for tectonics and hydrocarbon exploration:  Proceedings of the 13th Petroleum Conference, Cairo, Egypt, Vol. 1, p. 313-339.

29.       Eissa, M., J.D.Pigott, A.A. Hassan, and M.M. Awady, In Press, Wavelet estimation from the borehole:  Offshore East Bakr, Gulf of Suez, Egypt, Abstract Volume of Second International Symposium on Geophysics, 19-20 February, Tanta University, Egypt.

30.       Pigott, John D., In Press, A Novel Seismic Porosity-Pressure Prediction Technique for Clastic and Carbonate Reservoirs:  Young Modulus Extraction from 2D and 3D AVO Inversion in Proceedings of the OVERPRESSURE 2000 WORKSHOP, Drilling and Exploiting Overpressured Reservoirs: A Research Workshop for the Millenium, 4-6 April 2000, London, UK.