Skip to main content

U/Th-dating of deep-water corals from the eastern North Atlantic and the western Mediterranean Sea

  • Chapter
Cold-Water Corals and Ecosystems

Part of the book series: Erlangen Earth Conference Series ((ERLANGEN))

Abstract

Deep-water corals are widespread in the North Atlantic. Colonial azooxanthellate scleractinians sustain ecosystems mostly in the bathyal zone down the slopes and oceanic banks off the Iberian Peninsula to as far north as the Scandinavian shelf off northern Norway. Estimates of the geological age of 37 deepwater corals exposed at the seabed from major reef areas in the North Atlantic were based on U/Th datings. In contrast to the purely Holocene ages of deep-water corals in Scandinavian waters, the Faroe area and the Rockall Trough, deep-water corals from lower latitudes like the seamounts off NW-Africa, the Mid-Atlantic Ridge and the western Mediterranean Sea seemed to have grown continuously over the last 50 ka. Overall, deep-water corals showed U/Th ages between 0.09 and 53.5 ka.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 309.00
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  • Adkins JF, Boyle EA (1999) Age screening of deep-sea corals and the record of deep North Atlantic circulation change at 15,4 KA. In: Abrantes F., Mix A (eds) Reconstructing Ocean History: a Window into the Future. Kluwer Academic Plenum Publisher, New York, pp 103–120

    Google Scholar 

  • Chen JH, Edwards RL, Wasserburg GJ (1986) 238U, 234U and 232Th in seawater. Earth Planet Sci Lett 80: 241–251

    Article  Google Scholar 

  • Cheng H, Adkins J, Edwards RL, Boyle EA (2000a) U-Th dating of deep-sea corals. Geochim Cosmochim Acta 64: 2401–2416

    Article  Google Scholar 

  • Cheng H, Edwards RL, Hoff J, Gallup CD, Richards DA, Asmerom Y (2000b) The half-lives of uranium-234 and thorium-230. Chem Geol 169: 17–33

    Article  Google Scholar 

  • Cobb KK, Charles DC, Cheng H, Kastner M, Edwards Rl (2003) U/Th-dating living and young fossil corals from the central tropical Pacific. Earth Planet Sci Lett 210: 91–103

    Article  Google Scholar 

  • Dorschel B, Hebbeln D, Rüggeberg A, Dullo W-Chr (in press) Carbonate budget of a coldwater coral carbonate mound: Propeller Mound, Porcupine Seabight. Int J Earth Sci

    Google Scholar 

  • Edwards RL, Gallup CD, Cheng H (2003) Uranium-series dating of marine and lacustrine carbonates. In: Bourdon B, Henderson GM, Lundstrom CC, Turner SP (eds) Uraniumseries Geochemistry. Rev Mineral Geochem 52: 363–405

    Google Scholar 

  • Freiwald A (2002) Reef-forming cold-water corals. In: Wefer G, Billett D, Hebbeln D, Jørgensen BB, Schlüter M, van Weering T (eds) Ocean Margin Systems. Springer, Berlin Heidelberg, pp 365–385

    Google Scholar 

  • Freiwald A, ACES Party (2000) The Atlantic Coral Ecosystem Study (ACES): a marginwide assessment of corals and their environmental sensitivities in Europe’s deep waters. EurOCEAN 2000 Project Synopses. Marine processes, ecosystems and interactions. 1:312–317

    Google Scholar 

  • Freiwald A, Hühnerbach V, Lindberg B, Wilson JB, Campbell J (2002) The Sula Reef Complex, Norwegian Shelf. Facies 47: 179–200

    Google Scholar 

  • Goldstein SJ, Lea DW, Chakraboty S, Kashgarian M, Murrell MT (2001) Uranium-series and radiocarbon geochronology of deep-sea corals: implications for Southern Ocean ventilation rates and the oceanic carbon cycle. Earth Planet Sci Lett 193: 167–182

    Article  Google Scholar 

  • Ivanovich M, Latham AG, Ku T-L (1992) Uranium-series disequilibrium applications in geochronology. In: Ivanovich M, Harmon RS (eds) Uranium-series Disequilibrium: Applications to Earth, Marine, and Environmental Sciences. Clarendon Press, Oxford, pp 62–94

    Google Scholar 

  • Lomitschka M (1999) Untersuchungen zur Th/U-und Pa/U-Datierbarkeit von Tiefseekorallen und Pteropoden. PhD thesis, Univ Heidelberg, 91 pp

    Google Scholar 

  • Lomitschka M, Mangini A (1999) Precise Th/U-dating of small and heavily coated samples of deep sea corals. Earth Planet Sci Lett 170: 391–401

    Article  Google Scholar 

  • Ludwig KR, Titterington DM (1994) Calculation of 230Th/U isochrons, ages and errors. Geochim Cosmochim Acta 58: 5031–5042

    Article  Google Scholar 

  • Moran SB, Charette MA, Hoff JA, Edwards RL, Landing WM (1997) Distribution of 230Th in the Labrador Sea and its relation to ventilation. Earth Planet Sci Lett 150: 151–160

    Article  Google Scholar 

  • Paillet J, Arhan M, McCartney MS (1998) Spreading of Labrador Sea Water in the eastern North Atlantic. J Geophys Res 103: 10223–10239

    Article  Google Scholar 

  • Reid JR (1994) On the total geostrophic circulation of the North Atlantic Ocean: Flow patterns, tracers, and transports. Progr Oceanogr 33: 1–92

    Article  Google Scholar 

  • Rhein M (2000) Drifters reveal deep circulation. Nature 407: 30–31

    Article  Google Scholar 

  • Rüggeberg A, Dorschel B, Dullo W-Chr, Hebbeln D (2005) Sedimentary patterns in the vicinity of a carbonate mound in the Hovland Mound Province, northern Porcupine Seabight. In: Freiwald A, Roberts JM (eds) Cold-water Corals and Ecosystems. Springer, Berlin Heidelberg, pp 87–112

    Google Scholar 

  • Schmitz WJJ, McCartney MS (1993) On the North Atlantic circulation. Rev Geophys 31:29–49

    Article  Google Scholar 

  • Schröder-Ritzrau A, Lomitschka M, Mangini A (2003) Deep-sea corals evidence periodic reduced ventilation in the North Atlantic during LGM/Holocene transition. Earth Planet Sci Lett 216: 399–410

    Google Scholar 

  • Vogler S, Scholten J, Rutgers van der Loeff M, Mangini A (1998) 230Th in the eastern North Atlantic: the importance of water mass ventilation in the balance of 230Th. Earth Planet Sci Lett 156: 61–74

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2005 Springer-Verlag Berlin Heidelberg

About this chapter

Cite this chapter

Schröder-Ritzrau, A., Freiwald, A., Mangini, A. (2005). U/Th-dating of deep-water corals from the eastern North Atlantic and the western Mediterranean Sea. In: Freiwald, A., Roberts, J.M. (eds) Cold-Water Corals and Ecosystems. Erlangen Earth Conference Series. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-27673-4_8

Download citation

Publish with us

Policies and ethics