FACIES TRACTS

Teichert (1958) defines facies tract as “a system of different but genetically interconnected sedimentary facies of the same age.” This concept groups depositional systems into an order across a platform depending on the characteristics of the platform such as wheather it is a ram or rimmed platform. All the depositional systems within the facies were deposits during one sedimentary cycle.

Photograph from space showing the area from Cat Cay platform margin on the left to Andros Island on the right. The modern depositional systems are labeled.

At top: a depositional systems map showing the depositional systems of the platform. The alignment of the depositional systems across the platform produces a facies tract. Projected below: a simplified topographic cross section across the platform showing the facies tract.