Lagoon sediments, Pampa del Palo terrace (Pleistocene of Peru)

Where: Moquegua, Peru (17.6° S, 71.2° W: paleocoordinates 17.6° S, 71.2° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Pampa del Palo terrace Formation, Late/Upper Pleistocene (0.1 - 0.0 Ma)

• Includes taxa from members l1 to l3, Pampa del Palo terrace. Assigned to MOI stage 5e and 7. Late Pleistocene age

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal; unlithified, fine-grained, gypsiferous, calcareous sandstone and gypsiferous, calcareous mudstone

• Sediments interpreted as lagoonal units; faunal composition suggests shallow, restricted, sandy environments. The Pampa del Palo terrace is interpreted as a fault block that moved independently of the remaining Peruvian coast and, for some time between the end of Middle Pleistocene (before 220 ka) and the early late Pleistocene (ca 120 ka), it rose more slowly or was even down-faulted relative to the rest of the southern Peruvian margin. The independent block movements ceased after substage 5e when the Pampa del Palo terrace was incorporated into the regional uplift of the area.
• Fine-grained sandy to muddy sediments with gypsiferous and carbonate crusts.

Size class: macrofossils

Collection methods: quarrying,

• Specimens presumably held in repository given that they were collected and used for aminostratigraphic analyses. Possibly held at Universidad de Atnofagasta (Chile), Museo Nacional de Ciencias Naturales (Spain), Universidad de Salamanca (Spain) or Universidad Complutense (Spain).

Primary reference: L. Ortlieb, C. Zazo, J.L. Goy, C. Dabrio, and J. Machare. 1996. Pampa del Palo: an anomalous composite marine terrace on the uprising coast of southern Peru. Journal of South American Earth Sciences 9(5/6):367-379 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 43718: authorized by Austin Hendy, entered by Austin Hendy on 23.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Representative of common taxa.
Show authors, comments, and common names
Bivalvia
 Pectinida - Anomiidae
Anomia peruviana
Anomia peruviana d'Orbigny 1846 jingle
 Ostreida - Ostreidae
Ostrea sp.
Ostrea sp. Linnaeus 1758 oyster
 Cardiida - Cardiidae
"Trachycardium procerum" = Mexicardia procera
"Trachycardium procerum" = Mexicardia procera Sowerby 1833 cockle
 Cardiida - Solecurtidae
Tagelus dombeii
Tagelus dombeii Lamarck 1818 clam