...RICHARD M. STARON; BARBARA S. GRANDSTAFF; WILLIAM B. GALLAGHER; DAVID E. GRANDSTAFF Abstract Rare Earth Element (REE) signatures have been used to test whether mosasaur bones in a basal Hornerstown Formation bonebed (the Main Fossiliferous Layer, or MFL) in New Jersey were reworked from...

... vertebrates to interpret the genesis of the MFL. Glauconite concentration and maturity steadily increases from latest Cretaceous sediments of the Navesink–New Egypt Formation, through the MFL and into the Paleogene upper Hornerstown Formation, suggesting that marine transgression and decreasing sedimentation...

... are recognized and one of these, the New Egypt Formation, is newly described. The Navesink, Tinton, Hornerstown, and New Egypt Formations lithologically are characterized by a great abundance of the mineral glauconite, which occurs principally as sand-size grains. In contrast, the Redbank Formation is a quartz...

...Robert J. Horner; Logan A. Wiest; Ilya V. Buynevich; Dennis O. Terry, Jr.; David E. Grandstaff Abstract: Thalassinoides isp. burrow networks filled with green to dark bluish-gray glauconite pellets occur in the Cretaceous to Paleogene Hornerstown Formation and in the uppermost 1–2 m...

...Halsey W. Miller, Jr. ABSTRACT The Hornerstown formation is correlated with the Midway stage (Paleocene) of the Gulf Coast. The Vincentown formation is correlated with the Aquia formation (lower Eocene) of Maryland, and the Manasquan formation is correlated with the Claiborne stage (middle Eocene...

...John K. Adams Abstract The sediments of lower Tertiary age in New Jersey have been divided into 4 formations: the Hornerstown Marl, The Vincentown Sand, the Manasquan Marl, and the Shark River Marl. The writer has recognized 3 of these units in outcrop: the Hornerstown, Vincentown, and Manasquan...

... formation is the transgressive phase of a marine cycle involving the underlying Hornerstown formation as the initial regressive phase and the overlying Manasquan formation as the final regressive phase. A sub-tropical climate prevailed in the area during the deposition of the Vincentown. The source rocks...

... site in Monmouth County, NJ, the biostratigraphic position of mosasaur specimens ( Halisaurus platyspondylus, Mosasaurus hoffmann ) is related to the occurrence of an iridium excursion of 0.5 ppb (5x background levels) in the basal Hornerstown Formation just above the upper Maastrichtian New Egypt...

...C. McGowan Abstract An isolated ichthyosaur coracoid from the Hornerstown Formation of New Jersey extends the geological range of the Ichthyosauria at least to the late Maastrichtian. The specimen cannot be referred to any known taxon but is too incomplete to be described as the type of a new...