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Volcanic and Associated Hazards in the Lesser Antilles

  • M. J. Roobol
  • A. L. Smith
Part of the IAVCEI Proceedings in Volcanology book series (VOLCANOLOGY, volume 1)

Abstract

Historic records and stratigraphic studies throughout the Lesser Antilles reveal that volcanic and associated hazards may be categorized by increasing magnitude and decreasing frequency into:
  1. Category I:

    Events that occur every few decades and affect only the parent volcano’s immediate flanks.

     
  2. Category II:

    Events that occur every few hundreds to thousands of years with effects extending beyond the flanks of the parent volcano, often over large parts of the island.

     
  3. Category III:

    Events which occur every few tens to hundreds of thousands of years, and affect several islands; these may include non-volcanic activity such as sector collapse of the volcano’s flanks with associated earthquakes and tsunamis.

     
The historic volcanic activity of the arc over the past 300 years, since widespread European settlement, can be considered in Category I with 39 events. At least six pyroclastic, fourteen phreatic/phreatomagmatic, nine submarine eruptions, four dome/ lava extrusions and six volcano-seismic crises have occurred. The pyroclastic activity is represented by the historic andesite eruptions of Mt. Pelée, Martinique, and the basaltic andesite eruptions of Soufrière, St. Vincent, although other types have occurred in the past.

Category II hazards are typified by large Plinian-type eruptions which have generated widespread air falls, valley-fill pumice and ash flows (high aspect ratio ignimbrites, HARIs) and extensive ash hurricanes (low aspect ratio ignimbrites, LARIs). Examples of such activity were the eruption of Mt. Pelée around 2000 years ago, and the eruption that produced the Roseau tuff on Dominica approximately 30,000 years ago. Although this type of activity has not been witnessed by Europeans, several such eruptions occurred during the 3000-year occupation of the islands by pre-Columbian peoples. Category II hazard is also exemplified by the older geology of the Quill, St. Eustatius (Statia), where, some 30,000 years ago extrusion of rhyolitic magma onto a shallow marine shelf (about 3 km offshore from an older island) generated pyroclastic activity which became partially phreatomagmatic with increased energy release. The adjacent island was engulfed by surge deposits that eventually linked the early Quill to the older island.

Category III hazards involve major events during which, in addition to large new geological structures appearing on one island, associated seismic effects and tsunamis are likely to be experienced on adjacent islands. Examples of this type are illustrated by the geology of St. Lucia, Dominica and St. Vincent, where large arcuate depressions occur on the back-arc coasts. These structures have been interpreted as either calderas or as resulting from the gravity collapse of the steeper back-arc flanks of the islands. Whatever their origin, up to 12 km3 of land may be consumed.

At present the reactions of the governments of the many small islands to volcanic hazards vary considerably. Most are struggling with variable success (according to their level of affluence/impoverishment) to consider and plan for the short-term or category I hazard. For Saba and St. Eustatius where, and possibly because, we have prepared detailed category I and II hazard assessment reports, these reports are “lost” in the offices of the Netherlands Antilles government in Curaçao “awaiting approval” for publication and for 6 years have been unavailable to the administration and populations of these volcanic islands.

The mitigation of volcanic disasters requires not only hazard assessment reports but a wholehearted effort by the local government including education of the population at risk. Interaction between the international scientific community and local governments in developing countries is complicated by political-social-economic factors. The whole complex provides a new subject of geohazard management, without which the hazard assessment reports are unlikely to mitigate natural disaster.

Keywords

Pyroclastic Flow Volcanic Hazard Eruptive Style Surge Deposit Submarine Eruption 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Anonymous (1986) Scientists call for volcano monitoring. Geotimes 32: 8–9Google Scholar
  2. Baker PE (1985) Volcanic hazards on St. Kitts and Montserrat, West Indies. J Geol Soc Lond 142: 279–295CrossRefGoogle Scholar
  3. Bourdier JL, Gourgaud A, Vincent PM (1985) Magma mixing in a main stage of formation of Montagne Pelée: the Saint Vincent-type scoria flow sequence ( Martinique FWI ). J Volcanol Geotherm Res 25: 309–332CrossRefGoogle Scholar
  4. Briden JC, Rex DC, Fallar AM, Tomblin JF (1979) K-Ar geochronology and palaeomagnetism of volcanic rocks in the Lesser Antilles island arc. Phil Trans R Soc Lond SerA 291: 485–528CrossRefGoogle Scholar
  5. Carey SN, Sigurdsson H (1980) The Roseau ash: deep-sea tephra deposits from a major eruption on Dominica, Lesser Antilles arc. J Volcanol Geotherm Res 7: 67–86CrossRefGoogle Scholar
  6. Case J, Dengo G (eds) (in press) The geology of North America Vol. H: The Caribbean region. Geol Soc AmGoogle Scholar
  7. Cotner J (1975) A motoring guide to St. Kitts. Heidelberg Press USA, 42 ppGoogle Scholar
  8. Dorel J, Feuillard M (1980) Note sur la crise sismo-volcanique à la Soufrière de La Guadeloupe 1975–1977. Bull Volcanol 43: 419–430CrossRefGoogle Scholar
  9. Dupuy C, Dostal J, Traineau H (1985) Geochemistry of volcanic rocks from Mt. Pelée, Martinique. J Volcanol Geotherm Res 26: 147–165CrossRefGoogle Scholar
  10. Fisher RV, Heiken G (1982) Mt. Pelée, Martinique: May 8 and 20, 1902, pyroclastic flows and surges. J Volcanol Geotherm Res 13: 339–371CrossRefGoogle Scholar
  11. Fiske RS (1981) Scientists and the news media: contrasting interaction during the two volcanic crises in the eastern Caribbean. Abstr IAVCEI Symp “Arc Volcanism ” Tokyo, 93 ppGoogle Scholar
  12. Goodwin RC (1978) The Lesser Antilles Archaic: new data from St. Kitts. J Virgin Islands Archaeolog Soc 5: 6–16Google Scholar
  13. Hartog J (1975) History of Saba. Van Guilder NV, Saba, 140 ppGoogle Scholar
  14. Heiken G, Crowe B, McGetchin T, West F, Eichelberger J, Bartram D, Peterson R, Wohletz K (1980) Phreatic eruption clouds: the activity of La Soufrière de Guadaloupe, FWI, August- October 1976. Bull Volcanol 43: 383–395CrossRefGoogle Scholar
  15. Heilprin A (1903) Mont Pelée and the tragedy of Martinique. Lippincott, Philadelphia London, 337 ppGoogle Scholar
  16. LaCroix A (1904) La Montagne Pelée et ses eruptions. Masson, Paris, 622 ppGoogle Scholar
  17. Rea WJ (1974) The volcanic geology and petrology of Montserrat, West Indies. J Geol Soc Lond 130: 341–366CrossRefGoogle Scholar
  18. Robson GR, Tomblin JF (1966) Catalogue of active volcanoes of the world including solfatara fields. Part XX West Indies. Int Assoc Volcanol Naples, 56 ppGoogle Scholar
  19. Roobol MJ, Smith AL (1975) A comparison of the recent eruptions of Mt. Pelée, Martinique and Soufrière, St. Vincent. Bull Volcanol 39: 1–27CrossRefGoogle Scholar
  20. Roobol MJ, Smith AL (1976) Mount Pelée, Martinique: a pattern of alternating eruptive styles. Geology 4: 521–524CrossRefGoogle Scholar
  21. Roobol MJ, Smith AL (1979) Archaeological implications of some radiocarbon dating on Saba and St. Kitts. Proc 8th Int Congress pre-Columbian cultures of the Lesser Antilles, pp 168–176Google Scholar
  22. Roobol MJ, Smith AL (1980) Pumice eruptions of the Lesser Antilles. Bull Volcanol 43: 277–286CrossRefGoogle Scholar
  23. Roobol MJ, Smith AL, Tomblin JF (unpubl a) An assessment of the volcanic hazard on the islands of Saba and St. Eustatius in the northern Lesser Antilles. Confidential Report Rijks Geologische Dienst, 205 ppGoogle Scholar
  24. Roobol MJ, Smith AL, Tomblin JF (unpubl b) Volcanology of the islands of Saba and St. Eustatius in the northern Lesser Antilles. Part I - Geology, pyroclastic stratigraphy and petrology. Confidential Report Rijks Geologische Dienst, 165 ppGoogle Scholar
  25. Roobol MJ, Smith AL, Tomblin JF (unpubl c) Volcanology of the islands of Saba and St. Eustatius in the northern Lesser Antilles. Part II - Volcanic hazard. Confidential Report Rijks Geologische Dienst, 62 ppGoogle Scholar
  26. Roobol MJ, Petitjean Roget H, Smith AL (1976) Mt. Pelée and the island population of Martinique. Proc VI Int Congress pre- Columbian cultures of the Lesser Antilles, pp 46–53Google Scholar
  27. Roobol MJ, Smith AL, Wright JV (1981) Ravisions in the pyroclastic stratigraphy of Mt. Misery volcano, St. Kitts, Lesser Antilles: 14C ages and recognition of pyroclastic flow deposits. J Geol Soc Lond 138: 713–718CrossRefGoogle Scholar
  28. Roobol MJ, Wright JV, Smith AL (1983) Calderas or gravity-slide structures in the Lesser Antilles island arc? J Volcanol Ge- otherm Res 19: 121–134CrossRefGoogle Scholar
  29. Roobol MJ, Smith AL, Wright JV (1985) Dispersal and characteristics of pyroclastic fall deposits from Mt. Misery volcano, West Indies. Geol Rundschau 74: 321–335CrossRefGoogle Scholar
  30. Rowley KC (1978) Stratigraphy and geochemistry of the Soufrière volcano, St. Vincent, West Indies. Unpubl Ph.D thesis, Univ West Indies, St. Augustine, Trinidad, 282 ppGoogle Scholar
  31. Semet MP, Boudon G, Vincent PM (1986) Volcanological evolution of La Grande Découverte (La Soufrière), Guadeloupe, FWI Abstr Int Volcanological Congress, New Zealand, 73 ppGoogle Scholar
  32. Shepherd JB, Tomblin JF, Woo DA (1971) Volcano-seismic crisis in Montserrat, West Indies. Bull Volcanol 35: 143–163CrossRefGoogle Scholar
  33. Sigurdsson H, Carey S (1986) Volcanic disasters in Latin America and the 13th November 1985 eruption of Nevado del Ruiz volcano in Colombia. Disasters 10: 205–216CrossRefGoogle Scholar
  34. Sigurdsson H, Shepherd JB (1974) Amphibole-bearing basalts from the submarine volcano Kick1em-Jenny in the Lesser Antilles island arc. Bull Volcanol 38: 891–910CrossRefGoogle Scholar
  35. Simkin T, Siebert L, McClelland L, Bridge D, Newhall C, Latter JH (1981) Volcanoes of the world. Smithsonian Institution, Hutchinson Ross, Stroudsburg; 232 ppGoogle Scholar
  36. Smith AL, Roobol MJ (1980) Late pre-historic and historic activity of Mt. Pelée, Martinique. Abstracts IX Carib Geol Conf, pp 68–69Google Scholar
  37. Smith AL, Roobol MJ (in prep.) Mt. Pelée, Martinique - a study of an active island arc volcano. Mem. Geol. Soc. America.Google Scholar
  38. Smith AL, Roobol MJ, Rowley K (1979) Pyroclastic character of the active volcanoes of the northern Lesser Antilles. Trans 4th Latin Am Geol Cong, pp 24–30Google Scholar
  39. Sparks RSJ (1983) Mont Pelée, Martinique: May 8 and 20, 1902, pyroclastic flows and surges-discussion. J Volcanol Geotherm Res 19: 175–184CrossRefGoogle Scholar
  40. Tomblin JF (1964) The volcanic history and petrology of the Soufrière region, St. Lucia. Unpubl Ph.D thesis, Oxford Univ, 213 ppGoogle Scholar
  41. Traineau H, Westercamp D, Coulon C (1983) Mélanges magmatiques à la Montagne Pelée (Martinique). Origine des eruptions de type Saint-Vincent. Bull Volcanol 46: 243–269CrossRefGoogle Scholar
  42. UNDRO (1985) Volcanic emergency management. United Nations New York, 86 ppGoogle Scholar
  43. Wadge G (1985) Avoiding another St. Pierre. Volcano News 22: 4Google Scholar
  44. Walker GPL (1985) Origin of coarse lithic breccias near ignimbrite source vents. J Volcanol Geotherm Res 25: 157–171CrossRefGoogle Scholar
  45. Walker GPL, McBroome LA (1983) Mount St. Helens 1980 and Mount Pelée 1902 - flow or surge? Geology 11: 571–574CrossRefGoogle Scholar
  46. Westercamp D (1975) Petrology of the volcanic rocks of Martinique, West Indies. Bull Volcanol 39: 1–26CrossRefGoogle Scholar
  47. Westercamp D (1981) Assessment of volcanic hazards at Soufrière de Guadeloupe, FWI. Bull BRGM Sec IV (2): 187–197Google Scholar
  48. Westercamp D, Traineau H (1983a) The past 5000 years of volcanic activity at Mt. Pelée, Martinique (FWI): implications for assessment of volcanic hazards. J Volcanol Geotherm Res 17: 159–185CrossRefGoogle Scholar
  49. Westercamp D, Traineau H (1983b) Carte Géologigue de la Montagne Pelée à 1/20,000: Service Geol. Natl BRGM, OrleansGoogle Scholar
  50. Westermann JH, Keil H (1961) The geology of Saba and St. Eustatius. Uitg Natuurwet Studietering Suriname Ned Antillen 24: 1–175Google Scholar
  51. Wohletz K, Heiken G, Ander M, Goff F, Vuataz F-D, Wadge G (1986) The Qualibou caldera, St. Lucia, West Indies. J Volcanol Geotherm Res 27: 77–115CrossRefGoogle Scholar
  52. Wright JV, Roobol MJ, Smith AL, Sparks RSJ, Brazier SA, Rose WI, Sigurdsson H (1984) Late Quaternary explosive silicic volcanism on St. Lucia, West Indies. Geol Mag 121: 1–15CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • M. J. Roobol
  • A. L. Smith
    • 1
  1. 1.Department of GeologyUniversity of Puerto RicoMayaguez, Puerto RicoUSA

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