Oxford Clay Vale

The Oxford Clay Vale is a region in Oxfordshire, England, characterized by its rich clay soil. This vale is situated between two upland areas: the North Oxfordshire Heights to the north and the Berkshire Downs and Chiltern Hills to the south. The River Thames flows through this vale, receiving tributaries like the Windrush, Evenlode, and Cherwell.1

The London Clay, a significant geological formation of Eocene age, underlies much of this area. It is composed of brown, bluish, or gray clays and is rich in fossil plant and animal remains, indicating warm, tropical conditions during the Eocene Epoch. The Oxford Clay Vale is part of the broader Vale of White Horse district, which also includes the northern slopes of the Berkshire Downs and a frontage on the River Thames.23