AGS / Education / Geology Resources / Physiographic Regions / West Gulf Coastal Plain
The West Gulf Coastal Plain is a south sloping plain of gently rolling hills and can be divided into two areas based on the age of the rocks. The area in orange consists of Tertiary clays, sands and silts with lignite deposits and Quaternary gravels, sands and clays. Click here to learn about the geology of this area.
The area in green consists of Cretaceous sand, clay, gravel, marl, limestone, chalk and Quaternary sand and gravel. Click here to learn about the geology of the Cretaceous area.