. The Earth beneath the sea : History . Fig. 29. Structure section across the gravity-anomaly belt of the Lesser Antilles near Barbados computed to fit the seismic and gravity data. (After Sutton, Talwani and Worzel, 1960.) The reader is again referred to Fig. 17 for a view of the structure of a trench complicated by a continental margin and an adjacent mountain range. F. Summary The advent of gravity meters capable of making gravity measurements on surface ships, even though at present they require moderate seas in which to operate, ushers in a new era in the measurement of gravity at sea. We
. The Earth beneath the sea : History . Fig. 29. Structure section across the gravity-anomaly belt of the Lesser Antilles near Barbados computed to fit the seismic and gravity data. (After Sutton, Talwani and Worzel, 1960.) The reader is again referred to Fig. 17 for a view of the structure of a trench complicated by a continental margin and an adjacent mountain range. F. Summary The advent of gravity meters capable of making gravity measurements on surface ships, even though at present they require moderate seas in which to operate, ushers in a new era in the measurement of gravity at sea. We can ex- pect a vast increase in the data of gravity at sea and a great deal better insight into the most "normal" part of our globe. Most authors have computed a mass distribution to account for the observed gravity anomalies on the assumption that fluctuations of the M-discontinuity can account for the anomalies, at least after one has accounted for the sedi-
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