AMS 14C and 230Th/U dates determined on 24 coral species from the Gulf of Cádiz


Autoria(s): Wienberg, Claudia; Hebbeln, Dierk; Fink, Hiske G; Mienis, Furu; Dorschel, Boris; Vertino, Agostina; López Correa, Matthias; Freiwald, André
Cobertura

MEDIAN LATITUDE: 35.924927 * MEDIAN LONGITUDE: -7.245531 * SOUTH-BOUND LATITUDE: 35.305500 * WEST-BOUND LONGITUDE: -7.402833 * NORTH-BOUND LATITUDE: 36.183000 * EAST-BOUND LONGITUDE: -6.798833 * DATE/TIME START: 2003-12-02T08:30:00 * DATE/TIME END: 2003-12-13T18:55:00

Data(s)

15/08/2009

Resumo

This paper presents the first compilation of information on the spatial distribution of scleractinian cold-water corals in the Gulf of Cádiz based on literature research and own observations (video footage, sediment samples). Scleractinian cold-water corals are widely distributed along the Spanish and Moroccan margins in the Gulf of Cádiz, where they are mainly associated with mud volcanoes, diapiric ridges, steep fault escarpments, and coral mounds. Dendrophyllia cornigera, Dendrophyllia alternata, Eguchipsammia cornucopia, Madrepora oculata and Lophelia pertusa are the most abundant reef-forming species. Today, they are almost solely present as isolated patches of fossil coral and coral rubble. The absence of living scleractinian corals is likely related to a reduced food supply caused by low productivity and diminished tidal effects. In contrast, during the past 48 kyr scleractinian corals were abundant in the Gulf of Cádiz, although their occurrence demonstrates no relationship with main climatic or oceanographic changes. Nevertheless, there exists a conspicuous relationship when the main species are considered separately. Dendrophylliids are associated with periods of relatively stable and warm conditions. The occurrence of L. pertusa mainly clusters within the last glacial when bottom current strength in the Gulf of Cádiz was enhanced and long-term stable conditions existed in terms of temperature. Madrepora oculata shows a higher tolerance to abrupt environmental changes.

Formato

application/zip, 2 datasets

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.818028

doi:10.1594/PANGAEA.818028

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Wienberg, Claudia; Hebbeln, Dierk; Fink, Hiske G; Mienis, Furu; Dorschel, Boris; Vertino, Agostina; López Correa, Matthias; Freiwald, André (2009): Scleractinian cold-water corals in the Gulf of Cádiz - first clues about their spatial and temporal distribution. Deep Sea Research Part I: Oceanographic Research Papers, 56(10), 1873-1893, doi:10.1016/j.dsr.2009.05.016

Palavras-Chave #230Th/232Th; 230Th/234U; 232Th; 234U/238U; 238U; Age, 14C AMS; Age, 14C calibrated; Age, dated; Age, dated, error to older; Age, dated, error to younger; Age, dated material; Age, dated standard deviation; Age dated; Age e -; Age e +; Age std dev; Area; Area/locality; Center for Marine Environmental Sciences; Coral species; Dated material; Depth; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Depth bot; Depth top; dpm/dpm; Event; HERMES; Hotspot Ecosystem Research on the Margins of European Seas; Label; Leibniz Laboratory for Age Determinations and Isotope Research, University of Kiel; MARUM; Mass spectrometer Finnigan MAT 262 RPQ Plus; Raw; Sample code/label; Thorium 230/Thorium 232 ratio; Thorium 230/Uranium 234 ratio; Thorium 232; Uranium 234/Uranium 238 activity ratio; Uranium 238
Tipo

Dataset