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Bed 3, Cajamarca District, Cajamarca Province, Cajamarca, Peru
| Lat/Long (Decimal) | -7.16222,-78.5106 |
|---|---|
| Co-ordinates Derivation | based on nearby landmark |
| Mindat.org Region (for given coordinates) | Cajamarca District, Cajamarca Province, Cajamarca, Peru |
Collections
| Collection | Reference | Stratigraphic Name | Comments | Lithology | Age |
|---|---|---|---|---|---|
| Bed 144, Cajamarca section | Benavides-Caceres V.E. (1956) | Celendin | "shale" | 89.8 - 86.3 Ma Late/Upper Cretaceous | |
| Bed 133, Cajamarca section | Benavides-Caceres V.E. (1956) | Coñor | "shale" | 93.5 - 89.3 Ma Late/Upper Cretaceous | |
| Bed 111, Cajamarca section | Benavides-Caceres V.E. (1956) | Yumagual | "limestone" | 99.6 - 93.5 Ma Late/Upper Cretaceous | |
| Bed 48, Section 5 - Cajamarca (Inca Fm) | Benavides-Caceres V.E. (1956) | Inca | Collection from a 1 m thick limestone unit, lying below the Chulec Formation (early middle Albian) and not far above the Goyllarisquisga Formation, seperated by a disconformiy. The Inca Formation is 80 m thick at this section. The formation was believed to be Aptian by Steinmann (1930), although the present writer believes the unit to be early Albian on the basis of faunal affinities (Parahoplites biozone) and bounding chronostratigraphic relationships. | "limestone" | 113 - 100.5 Ma Early/Lower Cretaceous |
| Bed 50, Section 5 - Cajamarca (Inca Fm) | Benavides-Caceres V.E. (1956) | Inca | Collection from a 2 m thick limestone unit, lying below the Chulec Formation (early middle Albian) and not far above the Goyllarisquisga Formation, seperated by a disconformiy. The Inca Formation is 80 m thick at this section. The formation was believed to be Aptian by Steinmann (1930), although the present writer believes the unit to be early Albian on the basis of faunal affinities (Parahoplites biozone) and bounding chronostratigraphic relationships. | "limestone" | 113 - 100.5 Ma Early/Lower Cretaceous |
| Bed 58, Section 5 - Cajamarca (Chulec Fm) | Benavides-Caceres V.E. (1956) | Chulec | Collection from a 5 m thick limestone unit, lying below the Pariatambo Formation (late middle Albian) and immediately above the Inca Formation (lower Albian). The Chulec Formation varies in thickness significantly through the regions, ranging from 25 to 500 m in thickness. The formation does appear to have a diachronous base, and in places ranges from Aptian to early Albian at its base, but in most places the formation is considered to fall completely within the middle Albian. | "limestone" | 113 - 100.5 Ma Early/Lower Cretaceous |
| Bed 68, Section 5 - Cajamarca (Chulec Fm) | Benavides-Caceres V.E. (1956) | Chulec | Collection from a 7 m thick limestone unit, lying below the Pariatambo Formation (late middle Albian) and 240 m above the Inca Formation (lower Albian). The Chulec Formation varies in thickness significantly through the regions, ranging from 25 to 500 m in thickness. The formation does appear to have a diachronous base, and in places ranges from Aptian to early Albian at its base, but in most places the formation is considered to fall completely within the middle Albian. | "limestone" | 113 - 100.5 Ma Early/Lower Cretaceous |
| Bed 70, Section 5 - Cajamarca (Chulec Fm) | Benavides-Caceres V.E. (1956) | Chulec | Collection from a 20 m thick shale unit, lying below the Pariatambo Formation (late middle Albian) and 280 m above the Inca Formation (lower Albian). The Chulec Formation varies in thickness significantly through the regions, ranging from 25 to 500 m in thickness. The formation does appear to have a diachronous base, and in places ranges from Aptian to early Albian at its base, but in most places the formation is considered to fall completely within the middle Albian. | "shale" | 113 - 100.5 Ma Early/Lower Cretaceous |
| Bed 71, Section 5 - Cajamarca (Chulec Fm) | Benavides-Caceres V.E. (1956) | Chulec | Collection from a 17 m thick shale unit, lying below the Pariatambo Formation (late middle Albian) and 280 m above the Inca Formation (lower Albian). The Chulec Formation varies in thickness significantly through the regions, ranging from 25 to 500 m in thickness. The formation does appear to have a diachronous base, and in places ranges from Aptian to early Albian at its base, but in most places the formation is considered to fall completely within the middle Albian. | "shale" | 113 - 100.5 Ma Early/Lower Cretaceous |
| Bed 74, Section 5 - Cajamarca (Chulec Fm) | Benavides-Caceres V.E. (1956) | Chulec | Collection from a 41 m thick limestone unit, lying below the Pariatambo Formation (late middle Albian) and 280 m above the Inca Formation (lower Albian). The Chulec Formation varies in thickness significantly through the regions, ranging from 25 to 500 m in thickness. The formation does appear to have a diachronous base, and in places ranges from Aptian to early Albian at its base, but in most places the formation is considered to fall completely within the middle Albian. | "limestone" | 113 - 100.5 Ma Early/Lower Cretaceous |
| Bed 75, Section 5 - Cajamarca (Chulec Fm) | Benavides-Caceres V.E. (1956) | Chulec | Collection from a 4 m thick limestone unit, lying below the Pariatambo Formation (late middle Albian) and 280 m above the Inca Formation (lower Albian). The Chulec Formation varies in thickness significantly through the regions, ranging from 25 to 500 m in thickness. The formation does appear to have a diachronous base, and in places ranges from Aptian to early Albian at its base, but in most places the formation is considered to fall completely within the middle Albian. | "limestone" | 113 - 100.5 Ma Early/Lower Cretaceous |
| Bed 3, Section 5 - Cajamarca (Carhuaz Fm) | Benavides-Caceres V.E. (1956) | Carhuaz | Collection from a 18 m thick siltstone unit, lying below the Goyllarisquisga Formation (late Barremian-Aptian) and 33 m above the base of the section. The Carhuaz Formation is 556 m thick at this section. The formation was originally placed within the Barremian by Steinmann (1930) athough the present author suggests it has a broader temporal range, spanning the late Valanginian-Aptian in places. The fossiliferous part of the formation largely appears to be late Valanginian to early Hauterivian. | siltstone | 132.9 - 125 Ma Early/Lower Cretaceous |
Recorded Fossils
References
| Benavides-Caceres V.E. (1956) Cretaceous system in northern Peru, Bulletin of the American Museum of Natural History 108 4, 1-493 |
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
