Where: Spain (37.6° N, 3.1° W: paleocoordinates 37.8° N, 3.9° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Tortonian (11.6 - 7.2 Ma)
• bed-level stratigraphic resolution
Environment/lithology: transition zone or lower shoreface; lithified, bioturbated, glauconitic, shelly/skeletal, sandy packstone
• Sandy bottoms rich in grains or bioclasts providing hard substrate for brachiopod attachment. A high-energy and turbulent habitat, from the circalittoral up to the upper bathyal ranges, can be considered, affected by background currents and possibly also by occasional major storms. Integration of the data gathered from the paleontological and stratigraphic analysis allowed to characterize an oxygen and nutrient-rich bottom affected by background currents and occasional higher- hydrodynamic events in an outer neritic-upper bathyal range.
• The calcarenitic lithosome present in Unit II is 7 m-thick and consists of mixed skeletal-siliciclastic sandstone beds. Brachiopods are the major skeletal components and they could be identifed at generic or specifc level. In thin section also fragmented bivalves and bryozoans were observed. The siliciclastic components are quartz and greenish and brownish glauconitic grains and fragments of rocks of varied lithology. Repetitive variations in the content of these components defines a succession of 17 rhythms well recognizable by an alternation of indurated (carbonate-dominated) and soft (siliciclastics-dominated) layers. The intense bioturbation of both lithological intervals prevented the preservation of physical sedimentary structures.
Size class: macrofossils
Primary reference: A. Giannetti, J. F. Baeza-Carratalá, J. M. Soria-Mingorance, A. Dulai, J. E. Tent-Manclús and J. Peral-Lozano. 2018. New paleobiogeographical and paleoenvironmental insight through the Tortonian brachiopod and ichnofauna assemblages from the Mediterranean‑Atlantic seaway (Guadix Basin, SE Spain). Facies 64:24 [M. Clapham/M. Clapham/P. Wagner]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 194946: authorized by Matthew Clapham, entered by Matthew Clapham on 07.07.2018
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Rhynchonellata |
| Rhynchonellida - Basiliolidae |
|