History of circum-Caribbean explosive volcanism; 40Ar/39Ar dating of tephra layers

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doi: 10.2973/odp.proc.sr.165.021.2000
Author(s): Sigurdsson, Haraldur; Kelley, S.; Leckie, R. Mark; Carey, Steven N.; Bralower, Timothy J.; King, John W.
Author Affiliation(s): Primary:
University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States
University of Rhode Island, United States
Ocean Drilling Program, United States
University of Puerto Rico, Puerto Rico
University of North Carolina at Chapel Hill, United States
Paleontological Research Institution, United States
Université de Lyon I, France
Rice University, United States
Université Pierre et Marie Curie, France
GEOMAR, Federal Republic of Germany
Teikoku Oil Company, Japan
Danmarks Tekniske Universitet, Denmark
Institut Mediterranéen de Technologie, France
University of Missouri, United States
Boston University, United States
Swiss Federal Institute of Technology, Switzerland
Lamont-Doherty Earth Observatory, United States
University of Southampton, United Kingdom
Durham University, United Kingdom
Rosenstiel School of Marine and Atmospheric Science, United States
Bremen University, Federal Republic of Germany
Open University, United Kingdom
University of Massachusetts at Amherst, United States
University of North Carolina, United States
Volume Title: Proceedings of the Ocean Drilling Program, scientific results, Caribbean Ocean history and the Cretaceous/Tertiary boundary event; covering Leg 165 of the cruises of the drilling vessel JOIDES Resolution, Miami, Florida, to San Juan Puerto Rico, sites 998-1002, 19 December 1995-17 February 1996
Volume Author(s): Leckie, R. Mark; Sigurdsson, Haraldur; Acton, Gary D.; Abrams, Lewis J.; Bralower, Timothy J.; Carey, Steven N.; Chaisson, William P.; Cotillon, Pierre; Cunningham, Andrew D.; D'Hondt, Steven L.; Droxler, André W.; Galbrun, Bruno; Gonzalez, Juan; Haug, Gerald H.; Kameo, Koji; King, John W.; Lind, Ida L.; Louvel, Véronique; Lyons, Timothy W.; Murray, Richard W.; Mutti, Maria; Myers, Greg; Pearce, Richard B.; Pearson, D. Graham; Peterson, Larry C.; Röhl, Ursula; Garman, Phyllis
Source: Proceedings of the Ocean Drilling Program, scientific results, Caribbean Ocean history and the Cretaceous/Tertiary boundary event; covering Leg 165 of the cruises of the drilling vessel JOIDES Resolution, Miami, Florida, to San Juan Puerto Rico, sites 998-1002, 19 December 1995-17 February 1996, R. Mark Leckie, Haraldur Sigurdsson, Gary D. Acton, Lewis J. Abrams, Timothy J. Bralower, Steven N. Carey, William P. Chaisson, Pierre Cotillon, Andrew D. Cunningham, Steven L. D'Hondt, André W. Droxler, Bruno Galbrun, Juan Gonzalez, Gerald H. Haug, Koji Kameo, John W. King, Ida L. Lind, Véronique Louvel, Timothy W. Lyons, Richard W. Murray, Maria Mutti, Greg Myers, Richard B. Pearce, D. Graham Pearson, Larry C. Peterson, Ursula Röhl and Phyllis Garman. Proceedings of the Ocean Drilling Program, Scientific Results, Vol.165, p.299-314. Publisher: Texas A & M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 0884-5891
Note: In English. 76 refs.CD-ROM format, ISSN 1096-2514; WWW format, ISSN 1096-7451; all chapters are also available on the included CD-ROM and on the Web in PDF format; illus., incl. 3 tables, sketch maps
Summary: Drilling in the Caribbean Sea during Ocean Drilling Program Leg 165 has recovered a large number of silicic tephra layers and led to the discovery of three major episodes of explosive volcanism that occurred during the last 55 m.y. on the margins of this evolving ocean basin. The earliest episode is marked by Paleocene to early Eocene explosive volcanism on the Cayman Rise, associated with activity of the Cayman arc, an island arc that was the westward extension of the Sierra Maestra volcanic arc in southern Cuba. Caribbean sediments also document a major mid-to late Eocene explosive volcanic episode that is attributed to ignimbrite-forming eruptions on the Chortis Block in Central America to the west. This event is contemporaneous with the first phase of activity of the Sierra Madre volcanic episode in Mexico, the largest ignimbrite province on Earth. In the Caribbean sediments, a Miocene episode of explosive volcanism is comparable to the Eocene event, and also attributed to sources in the Central American arc to the west. Radiometric 40Ar/39Ar dates have been obtained for biotites and sanidines from 27 tephra layers, providing absolute ages for the volcanic episodes and further constraining the geochronology of Caribbean sediments. Volcanic activity of the Cayman arc is attributed to the northward subduction of the leading edge of the oceanic plate that carried the Caribbean oceanic plateau. Although the factors generating the large episodes of Central American explosive volcanism are unclear, we propose that they are related to contemporary major readjustments of plate tectonic configuration in the Pacific.
Year of Publication: 2000
Research Program: ODP Ocean Drilling Program
Key Words: 03 Geochronology; Absolute age; Algae; Ar/Ar; Biostratigraphy; Caribbean region; Cenozoic; Correlation; Dates; Explosive eruptions; Foraminifera; Invertebrata; Island arcs; Leg 165; Lithostratigraphy; Marine sediments; Microfossils; Nannofossils; ODP Site 1000; ODP Site 1001; ODP Site 1002; ODP Site 998; ODP Site 999; Ocean Drilling Program; Paleocene; Paleogene; Plantae; Protista; Quaternary; Sediments; Siliceous composition; Tephrochronology; Tertiary; Volcaniclastics; Volcanism
Coordinates: N192923 N192923 W0825610 W0825610
N124437 N124437 W0784422 W0784422
N163313 N163313 W0795200 W0795200
N154524 N154524 W0745436 W0745436
N104222 N104222 W0651011 W0651011
Record ID: 2000062898
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