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Pleistocene non‐marine molluscs from Cala Salada, Ibiza
Author(s) -
Paul C. R. C.
Publication year - 1982
Publication title -
geological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.721
H-Index - 54
eISSN - 1099-1034
pISSN - 0072-1050
DOI - 10.1002/gj.3350170302
Subject(s) - pleistocene , fauna , geology , extinction (optical mineralogy) , abundance (ecology) , paleontology , calcareous , ecology , biology
A 20 m Pleistocene section at Cala Salada, Ibiza, exposes three eolianites with interbedded silts and gravels. The basal eolianite has steep cross beds and represents a migrating dune, the upper two lack steep cross beds but contain abundant rhizomorphs and represent calcareous sand trapped by vegetation. Internal moulds of non‐marine molluscs occur only in the lower silts and the base of the middle eolianite. Within the lower silts are two cycles of upwards increasing diversity and abundance followed by local extinction, which probably reflect local ecological changes rather than major climatic fluctuations. The fauna contains eleven species, including Tudorella ferruginea hitherto known only from the eastern Balearics, and an extremely small form of Rumina decollate .