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Locality 36 , Loreto Municipality, Baja California Sur, Mexico
| Lat/Long (Decimal) | 26.0167,-111.35 |
|---|---|
| Co-ordinates Derivation | based on nearby landmark |
| Given Location | Baja California Sur, Mexico |
| Mindat.org Region (for given coordinates) | Loreto Municipality, Baja California Sur, Mexico |
Collections
| Collection | Reference | Stratigraphic Name | Comments | Lithology | Age |
|---|---|---|---|---|---|
| A 3544 - Coronado Island | Durham J. W. (1950) | San Marcos | The volcanic breccia of the Comondu Formation, and clays are overlain with a marked angular unconformity by limestone, usually with scattered volcanic cobbles and boulders at the base. The lower part of the succession is predominantly a light colored algal limestone, while the upper part if a coral-reef zone or reworked coral limestone. | conglomerate | 5.333 - 3.6 Ma Neogene |
| A 3552 - Arroyo de Gua | Durham J. W. (1950) | San Marcos | The oldest fossiliferous deposits exposed along Arroyo de Gua and Arroyo de Arce are correlatted with sediments on San Marcos Island as the fossils indicate early Pliocene. Along Arroyo de Arce the San Marcos Formation is a volcanic conglomerate containing interbedded sandstones and shell reefs. Fossils are more prevalent in the finer clastics whjich are common throughout the section implying the entire sequence is marine. Collection from Echinoid-Pecten bed. | sandstone | 5.333 - 3.6 Ma Neogene |
| A 3555 - Arroyo de Gua | Durham J. W. (1950) | San Marcos | The oldest fossiliferous deposits exposed along Arroyo de Gua and Arroyo de Arce are correlatted with sediments on San Marcos Island as the fossils indicate early Pliocene. Along Arroyo de Arce the San Marcos Formation is a volcanic conglomerate containing interbedded sandstones and shell reefs. Fossils are more prevalent in the finer clastics whjich are common throughout the section implying the entire sequence is marine. | sandstone | 5.333 - 3.6 Ma Neogene |
| A 3556 - Arroyo de Gua | Durham J. W. (1950) | San Marcos | The oldest fossiliferous deposits exposed along Arroyo de Gua and Arroyo de Arce are correlatted with sediments on San Marcos Island as the fossils indicate early Pliocene. Along Arroyo de Arce the San Marcos Formation is a volcanic conglomerate containing interbedded sandstones and shell reefs. Fossils are more prevalent in the finer clastics whjich are common throughout the section implying the entire sequence is marine. | sandstone | 5.333 - 3.6 Ma Neogene |
| A 3557 - Arroyo de Gua | Durham J. W. (1950) | San Marcos | The oldest fossiliferous deposits exposed along Arroyo de Gua and Arroyo de Arce are correlatted with sediments on San Marcos Island as the fossils indicate early Pliocene. Along Arroyo de Arce the San Marcos Formation is a volcanic conglomerate containing interbedded sandstones and shell reefs. Fossils are more prevalent in the finer clastics whjich are common throughout the section implying the entire sequence is marine. Collection from Pecten beds. | sandstone | 5.333 - 3.6 Ma Neogene |
| A 3558 - Arroyo de Gua | Durham J. W. (1950) | San Marcos | The oldest fossiliferous deposits exposed along Arroyo de Gua and Arroyo de Arce are correlatted with sediments on San Marcos Island as the fossils indicate early Pliocene. Along Arroyo de Arce the San Marcos Formation is a volcanic conglomerate containing interbedded sandstones and shell reefs. Fossils are more prevalent in the finer clastics whjich are common throughout the section implying the entire sequence is marine. About 150 ft stratigraphically below A-3557. | sandstone | 5.333 - 3.6 Ma Neogene |
| A 3565 - Arroyo de Arce | Durham J. W. (1950) | San Marcos | The oldest fossiliferous deposits exposed along Arroyo de Gua and Arroyo de Arce are correlatted with sediments on San Marcos Island as the fossils indicate early Pliocene. Along Arroyo de Arce the San Marcos Formation is a volcanic conglomerate containing interbedded sandstones and shell reefs. Fossils are more prevalent in the finer clastics whjich are common throughout the section implying the entire sequence is marine. From pecten beds. | sandstone | 5.333 - 3.6 Ma Neogene |
| Locality 36 (Beal, 1948) - Salada Fm, Loreto, Mexico | Beal C. H. (1948) | Salada | From the "Salada beds"; Gardner regarded these as "Pliocene in age". A thick section of the formation, perhaps 2000-3000 ft occurs north of Loreto in a synclinal basin, and in places the beds are highly folded and rest unconformably upon older Comondu rocks. Posssibly outcrops described as Salada Fm are not all the same age, yet most appear to be Pliocene. | sandstone | 5.333 - 2.588 Ma Cenozoic |
Recorded Fossils
References
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!
