Eastern face of the Kirtlington Quarry (Washford Quarry), a disused limestone quarry. The sedimentary rocks exposed in this quarry bear a rich Middle Jurassic (Bathonian) fossil fauna, including terrestrial microvertebrates. The eastern face exposes marls of the Forest Marble Formation at the top (yellowish weathering rock) underlain by limestones of the White Limestone Formation (thickly bedded, darker weathering rock). The Forest Marble contains the Kirtlington Mammal Bed, the most productive microvertebrate horizon of the quarry.