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XVI Reunión Científica de la Sociedad Española de Arcillas - Libro ...

XVI Reunión Científica de la Sociedad Española de Arcillas - Libro ...

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Comunicaciones SEA 2001 – Baeza (Jaén)<br />

SOCIEDAD<br />

ESPAÑOLA DE ARCILLAS<br />

CLAY MINERAL ASSEMBLAGES, SEDIMENTS TEXTURE AND<br />

FORAMINIFERA BIOSTRATIGRAPHY USED FOR<br />

PALAEOCEANOGRAPHIC RECONSTRUCTION OF THE GALICIA<br />

CONTINENTAL SHELF DURING THE HOLOCENE<br />

Martins V a , Rocha F a , Sequeira C a , Jouanneau J b ,<br />

Weber O b , Gomes C a , Dias J c , Gomes V a<br />

a<br />

Dpto. <strong>de</strong> Geociencias. Universida<strong>de</strong> <strong>de</strong> Aveiro. Portugal.<br />

b Dpt. <strong>de</strong> Géologie et d'Océanographie, Université <strong>de</strong> Bor<strong>de</strong>aux I / CNRS, Francia.<br />

c UCTRA. Universida<strong>de</strong> do Algarbe. Faro. Portugal.<br />

Sedimentological and micropaleontological studies were carried out on<br />

sediments from core KSGX40 (164cm long) collected in a muddy <strong>de</strong>posit located<br />

at the Galicia continental shelf of Ria <strong>de</strong> Vigo, at <strong>la</strong>titu<strong>de</strong> 42º14’98’’N, longitu<strong>de</strong><br />

09º01’01’’W and sea <strong>de</strong>pth 115m. The impact of some Holocene climatic<br />

oscil<strong>la</strong>tions with expression on the sedimentary dynamics and on the<br />

characteristics of the benthic environment is disclosed in the present paper.<br />

Materials and methods<br />

Mineralogical studies were carried out upon sediments 125 µm<br />

corresponding to <strong>la</strong>yers 39-40 cm, 69-70 cm and 134-135 cm.

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