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Farola Monte Hermoso FI Facies (Pliocene of Argentina)

Also known as Hermosense Tipico FI Facies

Where: Buenos Aires, Argentina (39.0° S, 61.7° W: paleocoordinates 39.0° S, 60.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Montehermosan mammal zone, Monte Hermoso Formation, Early/Lower Pliocene (5.3 - 3.6 Ma)

• The overbank deposits display a wide lateral extension in the

•abrasion platform and the lower part of the cliff; and include the Fl

•and Fm facies. These levels are equivalent to the “Hermosense

•típico” of Vignati (1925) and Bonaparte (1960), the “Unidad A” of

•Fidalgo et al. (1975), and “Unidad Litoestratigráfica I” of Fidalgo and

•Tonni (1982)

Environment/lithology: fluvial; yellow, silty mudstone

• The Fl facies is composed mainly of silty mudstones, ranging

•from reddish brown to yellowish brown; though reddish brown

•sandy siltstones and silty sandstones are also present. These deposits

•show a very fine lamination in the lower sector, while in the

•middle-upper one they are massive

Size classes: macrofossils, mesofossils

Preservation: trace

Collection methods: All the materials are housed in the Museo

•Municipal de Ciencias Naturales “Carlos Darwin” (Punta Alta,

•Buenos Aires), under the acronym MD-FM.

Primary reference: R. L. Tomassini, C. I. Montalvo, C.M. Deschamps and T. Manera. 2013. Biostratigraphy and biochronology of the Monte Hermoso Formation (early Pliocene) at its type locality, Buenos Aires Province, Argentina. Journal of South American Earth Sciences 48:31-42 [C. Jaramillo/M. Vallejo] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 152081: authorized by Carlos Jaramillo, entered by Maria Vallejo on 06.11.2013, edited by Juan Carrillo

Creative Commons license: CC BY (attribution)