Allostratigraphy and paleontology of the lower Miocene Chilcatay Formation in the Zamaca area, East Pisco basin, southern Peru
Bibliographic Data
| ID | 16840568 |
|---|---|
| Authors | C Di Celma (0000-0001-7781-7981, Università di Camerino, corresponding author), P P Pierantoni (0000-0002-1237-4689, Università di Camerino), E Malinverno (0000-0002-9124-5155, University of Milano-Bicocca), Alberto Collareta (0000-0002-6513-8882, University of Pisa), Olivier Lambert (0000-0003-0740-5791, Institute of Natural Sciences), W Landini (0000-0001-7196-9888, University of Pisa), Giulio Bosio (0000-0001-8067-4926, University of Milano-Bicocca), Karen Gariboldi (0000-0002-7978-7496, University of Pisa), Anna Gioncada (0000-0002-8513-7377, University of Pisa), Christian De Muizon (0000-0002-1247-8867, Centre National de la Recherche Scientifique), Giancarlo Molli (0000-0001-9488-8132, University of Pisa), Felix G Marx (0000-0002-1029-4001, Institute of Natural Sciences), Rafael M Varas-Malca (0000-0002-4435-8229, National University of San Marcos), Mario Urbina (0000-0002-1898-9051, National University of San Marcos), Giovanni Bianucci (0000-0001-7105-0863, University of Pisa) |
| Year | 2019 |
| Volume | 15 |
| Issue | 2 |
| Pages | 393-405 |
| Publication date | 2019-07-03 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Journal of Maps (JOURNAL) |
| Journal identifiers | ISSN: 1744-5647 • E-ISSN: 1744-5647 |
| Publisher | Informa UK Limited (PUBLISHER • GB) |
| DOI | 10.1080/17445647.2019.1604439 |
| OpenAlex | W2944148215 |
| Language | EN |
| Citations received | 3 |
| References cited | 59 |
Based on mapping of laterally traceable stratigraphic discontinuities, we propose a high-resolution allostratigraphic scheme for one of the world’s foremost fossil marine vertebrate Lagerstätten: the lower Miocene strata of the Chilcatay Formation exposed along the Ica River near Zamaca, southern Peru. Measured sections combined with 1:10,000 scale mapping of a 24 km2 area provide an overview of the stratal architecture, as well as a general facies framework and interpretation of the various depositional settings. As a whole, the Chilcatay alloformation is bounded by the CE0.1 unconformity at the base and the PE0.0 unconformity at the top. An internal Chilcatay surface, termed CE0.2, splits the alloformation into two distinct allomembers (Ct1 and Ct2). The Ct1 allomember comprises three facies associations recording deposition in shoreface, offshore, and subaqueous delta settings. The Ct2 allomember comprises two facies associations, recording deposition in shoreface and offshore settings. Using these data, we place the rich marine vertebrate assemblage in a precise spatial and stratigraphic framework. The well-diversified vertebrate assemblage is dominated by cetaceans (mostly odontocetes) and sharks (mostly lamniforms and carcharhiniforms); rays, bony fish, and turtles are also present. Taxonomic novelties include the first records of baleen whales, platanistids, and eurhinodelphinids from the Chilcatay Formation
Facies · Sedimentary depositional environment · Structural basin · Unconformity · Evolution and Paleontology Studies · Ichthyology and Marine Biology · Paleontology and Evolutionary Biology · Geology · Paleontology
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| Unique citing works | 3 |
|---|---|
| Citations per year | 0.6 |
| Citation span | 2021 - 2025 (5) |
| Citation velocity | recent |
| Highly cited | No |
| Citation types | Neutral: 3 |