Firmground ichnofacies recording high-frequency marine flooding events (Langhian transgression, Vallés-Penedés Basin, Spain)

The decapod burrow Spongeliomorpha sudolica occurs associated with transgressive firmgrounds in the transition between Aragonian continental red beds and Langhian marine units in some of the inner sectors of the Vallès-Penedès Basin. This ichnospecies designates branching burrow systems with scratch...

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Bibliographic Details
Published in:Acta geologica hispanica 2005, Vol.3 (3), p.295-305
Main Authors: Gibert Atienza, Jordi Maria de, Robles, Jose M.
Format: Article
Language:eng ; spa
Subjects:
Crustaceans
Estratigrafia
Geología
Ichnology
Ictiologia
Miocene
Miocè
Sequence stratigraphy
Shellfish
Spongeliomorpha
Spongeliomorpha.Miocene
Stratigraphic geology
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Summary:The decapod burrow Spongeliomorpha sudolica occurs associated with transgressive firmgrounds in the transition between Aragonian continental red beds and Langhian marine units in some of the inner sectors of the Vallès-Penedès Basin. This ichnospecies designates branching burrow systems with scratch marks in the walls produced by marine crustacean decapods. The occurrence of Spongeliomorpha represents an example of the Glossifungites ichnofacies. The several horizons where the traces are found are intercalated with continental red beds a few meters below the main transgressive surface, which is overlain by fossiliferous marine sandstones. The Spongeliomorpha-bioturbated layers record short, high frequency marine flooding surfaces that may be related either to actual sea-level changes or to variations in tectonic subsidence or sediment input. In any case, these flooding events punctuated the early phases of the Langhian transgression in the basin.
ISSN:1695-6133
0567-7505
1696-5728
DOI:10.1344/105.000001397