High-resolution Sr/Ca records in sclerosponges calibrated to temperature in situ

Brad E. Rosenheim, Peter K Swart, Simon R. Thorrold, Philippe Willenz, Lorraine Berry, Christopher Latkoczy

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Ratios of strontium to calcium have been analyzed by laserablation inductively coupled plasma-mass spectrometry (LA-ICP-MS) in a skeletal section of the sclerosponge Ceratoporella nicholsoni. The growth period, representative of 3 yr, was stained in the skeleton with a fluorochrome (calcein). Temperatures were recorded at 2 h intervals within the shallow, cryptic reef enclosure that the sclerosponge inhabited on the northern coast of Jamaica, allowing the formulation of a direct empirical relationship between Sr/Ca and temperature. To verify this calibration, Sr/Ca ratios of two sclerosponges of the same species from depths of 67 m and 136 m in Exuma Sound, Bahamas, were analyzed by LA-ICP-MS and compared to the temperatures from these depths over a decade prior to collection. The result is an independently verified, highresolution empirical calibration for the temperature sensitivity of Sr/Ca ratios in the aragonite skeletons of sclerosponges from Jamaica and the Bahamas. The calibration is a first for C. nicholsoni and indicates that sclerosponges are more sensitive temperature recorders than zooxanthellate corals. It represents an important step in establishing skeletal geochemistry of sclerosponges as a proxy of temperature in the upper 250 m of the ocean.

Original languageEnglish (US)
Pages (from-to)145-148
Number of pages4
JournalGeology
Volume32
Issue number2
DOIs
StatePublished - Feb 2004

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temperature
calibration
skeleton
mass spectrometry
plasma
aragonite
strontium
in situ
coral
reef
geochemistry
calcium
coast
ocean

Keywords

  • Calibration
  • Ceratoporella nicholsoni
  • Ocean temperature
  • Paleoceanography
  • Sclerosponge
  • Sr/Ca ratios

ASJC Scopus subject areas

  • Geology

Cite this

Rosenheim, B. E., Swart, P. K., Thorrold, S. R., Willenz, P., Berry, L., & Latkoczy, C. (2004). High-resolution Sr/Ca records in sclerosponges calibrated to temperature in situ. Geology, 32(2), 145-148. https://doi.org/10.1130/G20117.1

High-resolution Sr/Ca records in sclerosponges calibrated to temperature in situ. / Rosenheim, Brad E.; Swart, Peter K; Thorrold, Simon R.; Willenz, Philippe; Berry, Lorraine; Latkoczy, Christopher.

In: Geology, Vol. 32, No. 2, 02.2004, p. 145-148.

Research output: Contribution to journalArticle

Rosenheim, BE, Swart, PK, Thorrold, SR, Willenz, P, Berry, L & Latkoczy, C 2004, 'High-resolution Sr/Ca records in sclerosponges calibrated to temperature in situ', Geology, vol. 32, no. 2, pp. 145-148. https://doi.org/10.1130/G20117.1
Rosenheim BE, Swart PK, Thorrold SR, Willenz P, Berry L, Latkoczy C. High-resolution Sr/Ca records in sclerosponges calibrated to temperature in situ. Geology. 2004 Feb;32(2):145-148. https://doi.org/10.1130/G20117.1
Rosenheim, Brad E. ; Swart, Peter K ; Thorrold, Simon R. ; Willenz, Philippe ; Berry, Lorraine ; Latkoczy, Christopher. / High-resolution Sr/Ca records in sclerosponges calibrated to temperature in situ. In: Geology. 2004 ; Vol. 32, No. 2. pp. 145-148.
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