Chandler Bridge Formation, Geological formation in Dorchester County, South Carolina, United States
Chandler Bridge Formation is a geological sequence in Dorchester County composed of three distinct sandstone beds containing quartz and phosphate materials. The layers display color variations ranging from yellowish-brown to gray throughout the exposed sections.
The formation was documented and classified in 1982 as a new Oligocene stratigraphic unit by the U.S. Geological Survey. This classification helped scientists better understand the geological history of the region.
The formation is known for its rich fossil deposits that reveal what marine life looked like millions of years ago. Visitors can observe the layered rocks that have preserved these ancient remains through time.
The formation is exposed across several counties in South Carolina at multiple locations making observation possible at different sites. Checking with local geological resources beforehand helps visitors find the most accessible viewing areas.
The layers contain fossils of sharks, rays, and marine mammals that are millions of years old. These discoveries allow researchers to trace how these marine species evolved and lived over vast stretches of time.
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