Paleoenvironmental signficance of C an O isotopic signal in Last Interglacial gastropod dendropoma shell concentrations from Canary (Spain) and Sal (Cape Verde) Islands

  1. J. A. González-Delgado 1
  2. C. Zazo 2
  3. J. L. Goy 1
  4. J. Civis 1
  5. J. Templado 2
  6. M. Calvo 2
  7. C. J. Dabrio 3
  1. 1 Universidad de Salamanca
    info

    Universidad de Salamanca

    Salamanca, España

    ROR https://ror.org/02f40zc51

  2. 2 Museo Nacional de Ciencias Naturales
    info

    Museo Nacional de Ciencias Naturales

    Madrid, España

    ROR https://ror.org/02v6zg374

  3. 3 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

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Journal:
Revista de la Sociedad Geológica de España

ISSN: 0214-2708

Year of publication: 2005

Volume: 18

Issue: 3-4

Pages: 207-211

Type: Article

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Abstract

We study the paleoenvironmental significance of the C and O isotopes of the irregular coiled gastropod Dendropoma, a remarkable biological marker of mean sea level, of sediments aged as Last Interglacial from Fuerteventura and Lanzarote (Canary Islands, Spain), and from the Sal Island (Cape Verde). Recent Dendropoma sp. from the Sal Island and D. petraeum from Cabo de Palos (Murcia, Spain) are also utilized. Range of results generally is lower than 1 ‰, both for the C and O, except for the ä18O in Cabo de Palos (2,09%o), and for the ä13C from Fuerteventura (3,57%o). Differences between ä18O shells of the Last Interglacial (LI) from Fuerteventura with respect to that of Cape Verde, if salinity do not changed, probably reflects differences of 3-4 ºC in the sea surface temperature (SST), similar to the Recent. In Sal Island, if salinity and ice-volume do not changed, the difference between SST of the LI and Recent probably was of 2 ºC.

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