Abstract
This paper describes the stratigraphy of the Cambrian sedimentary rocks of eastern Pennsylvania and adjacent New Jersey in the neighborhood of the confluence of the Delaware and Lehigh rivers. The succession is: The sequence, except for the Hardyston, is predominantly carbonate rocks. The total thickness is about 3000 feet. The basal formation, the Hardyston, is clastic and changes abruptly lithologically and in thickness and was probably laid down in a rapidly advancing sea. The carbonate formations which follow, except the Leithsville, are fossiliferous. Partly through analogy with recent conditions, it is postulated that these carbonate rocks and their “cryptozoons were deposited in a shallow, agitated sea into which little detritus was carried. View this table:
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