Cintura Formation
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| Cintura Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Unit of | Bisbee Group |
| Sub-units | Marquechi, San Marcos and San Juan Member |
| Thickness | 1,146 meters[1] |
| Location | |
| Region | Arizona and Sonora |
| Country | United States, Mexico |
| Type section | |
| Named by | Ransome |
| Year defined | 1904 |
The Cintura Formation is a geologic formation in the northeastern Sonora of Arizona and Mexico.[1] It preserves fossils dating back to the Cretaceous period.
The Cintura Formation is divided into 3 stratigraphic members which represent deltaic depositional elements: the basal Marquechi Member, medial San Marcos Member and the uppermost San Juan Member.[1] The delta is thought to have prograded southward and have an immediate source to its north based on paleocurrents and provenance data.[1]
