Warm, shallow seas covered
New Jersey during Cambrian time. Quartzite (metamorphosed
sandstone) and thick limestone deposits typify the rocks found in
outcrops of this time and indicate a quiet geologic time interval for
this part of the North American continent. Fossils, including the
trilobite Olenellus, vertical worm burrows (Skolithos), and stromatolites attest to the marine origin of the Cambrian
formations of northwestern New Jersey.
Fossils >