Abstract
Principal facts, including free‐air and simple Bouguer anomalies, are presented for 60 gravity observations at sea. A Vening Meinesz pendulum apparatus was used during the gravity measuring cruise of USS Conger (SS477), Cruise III.Excluding anomalies associated'with the Puerto Rico Trench and the continental margin, free‐air anomalies observed on a line between San Juan, P. R., and New London, Conn., are −10 to −50 mgal. If the standard oceanic crustal section of Worzel and Shurbet is adopted as a reference, these anomalies can be explained by variations of the sediment or, the crustal rock thicknesses of not more than 1 km from normal oceanic thicknesses, or both.
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