Back Oxfordium Afrikaans الأكسفوردي Arabic Oxfordianu AST Oksfordij BS Oxfordià Catalan Oxfordium German Oxfordiense Spanish Oxfordiar Basque آکسفوردین Persian Oxfordien French
| Oxfordian | |||||||||
|---|---|---|---|---|---|---|---|---|---|
&sq=Facebook&lang=en&file=File:P%C3%A9ry-Reuchenette_Oxfordian.JPG) Cyclically alternating limestone (light, more competent) and marl/clay layers of Oxfordian age at Péry-Reuchenette, near Tavannes, Jura Mountains, Switzerland. | |||||||||
| Chronology | |||||||||
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| Etymology | |||||||||
| Name formality | Formal | ||||||||
| Usage information | |||||||||
| Celestial body | Earth | ||||||||
| Regional usage | Global (ICS) | ||||||||
| Time scale(s) used | ICS Time Scale | ||||||||
| Definition | |||||||||
| Chronological unit | Age | ||||||||
| Stratigraphic unit | Stage | ||||||||
| Time span formality | Formal | ||||||||
| Lower boundary definition | FAD of ammonite species Brightia thuouxensis | ||||||||
| Lower boundary definition candidates | Horizon of the Ammonite Cardioceras redcliffense. | ||||||||
| Lower boundary GSSP candidate section(s) | |||||||||
| Upper boundary definition | FAD of the Ammonite Pictonia baylei | ||||||||
| Upper boundary GSSP | Flodigarry, Skye, Scotland, UK 57°39′40″N 6°14′44″W / 57.6610°N 6.2455°W | ||||||||
| Upper GSSP ratified | 2021[2] | ||||||||
The Oxfordian is, in the ICS' geologic timescale, the earliest age of the Late Jurassic Epoch, or the lowest stage of the Upper Jurassic Series. It spans the time between 161.5 ± 1.0 Ma and 154.8 ± 0.8 Ma (million years ago).[3] The Oxfordian is preceded by the Callovian and is followed by the Kimmeridgian.
- ^ "International Chronostratigraphic Chart" (PDF). International Commission on Stratigraphy.
- ^ "Global Boundary Stratotype Section and Point". International Commission of Stratigraphy. Retrieved 25 July 2021.
- ^ "Stratigraphic Chart 2022" (PDF). International Commission on Stratigraphy. February 2022. Retrieved 22 April 2022.