Geology The oldest rocks in the county are at a depth of , formed during the Precambrian era. These metamorphic rocks include gneiss, quartzite, and schist. During the Paleozoic era, the region was part of a mountainous landmass that extended from the Arctic to Mexico. Erosion during the Triassic and Jurassic periods formed valleys that gathered sediment, which deposited and layered as the coastline receded and rose. In the Paleocene and Eocene epochs, as well as the later Miocene epoch, the area that is now Cape May County was under water. The coastline receded again during the Quaternary period.
Geology The oldest rocks in the county are at a depth of , formed during the Precambrian era. These metamorphic rocks include gneiss, quartzite, and schist. During the Pal.eozoic era, the region was part of a mountainous landmass that extended from the Arctic to Mexico. Erosion during the Triassic and Jurassic periods formed valleys that gathered sediment, which deposited and layered as the coastline receded and rose. In the Paleocene and Eocene epochs, as well as the later Miocene epoch, the area that is now Cape May County was under water. The coastline receded again during the Quaternary period