Modern deep-water coral mounds north of Little Bahama Bank: criteria for recognition of deep-water coral bioherms in the rock record.

H. T. Mullins, Cathryn R Newton, K. Heath, H. M. Vanburen

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Deep-water, ahermatypic coral mounds are present at water depths of 1000-1300m on the lower slope of Little Bahama Bank. The mounds display 5-40m of relief above the sea bottom. A diverse benthic community exists, including 11 genera and 16 species of ahermatypic coral. Conspicuously absent from the coral fauna are Lophelia and Dendrophyllia. Radiocarbon dates on fresh coral and gorgonian fragments indicate the mounds are at least in part Recent. The mounds probably developed on sea-floor perturbations in areas where strong bottom currents provide needed oxygen and nutrients. If found in the rock record, the mounds would be considered bioherms, ie. bioherms are not uniquely shallow-water in origin. The distinction between ancient deep- and shallow-water coral buildups involves using multiple recognition criteria which are discussed here and include presence of algae, coral morphology and trace element geochemistry. -from Author

Original languageEnglish (US)
Pages (from-to)999-1014
Number of pages16
JournalJournal of Sedimentary Petrology
Volume51
Issue number3
DOIs
StatePublished - 1981
Externally publishedYes

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bioherm
coral
deep water
rock
shallow water
bottom current
benthos
water depth
relief
seafloor
geochemistry
alga
perturbation
trace element
fauna
oxygen
nutrient

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

Modern deep-water coral mounds north of Little Bahama Bank : criteria for recognition of deep-water coral bioherms in the rock record. / Mullins, H. T.; Newton, Cathryn R; Heath, K.; Vanburen, H. M.

In: Journal of Sedimentary Petrology, Vol. 51, No. 3, 1981, p. 999-1014.

Research output: Contribution to journalArticle

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