. The Earth beneath the sea : History . > i "1 ; 100 N- 1 5 MllES -^^-s LEGEND SAND ClAY MUD â ' SMEU5 BEAUMONT ClAV Fig. 7. Marine Sonoprobe profile across Corpus Christi Bay showing buried oyster reefs (see a, b, c and d). (After McClure, Nelson and Huckaby, 1958, fig. 9.) Bay, one for the First Naval District Office of Public Works and one for the Army Corps of Engineers. The principal objectives were to map bedrock under glacial deposits in parts of the Bay. Fig. 6 is representative of recordings obtained. Bedrock reflections and other shallower horizons were traceable over most of
. The Earth beneath the sea : History . > i "1 ; 100 N- 1 5 MllES -^^-s LEGEND SAND ClAY MUD â ' SMEU5 BEAUMONT ClAV Fig. 7. Marine Sonoprobe profile across Corpus Christi Bay showing buried oyster reefs (see a, b, c and d). (After McClure, Nelson and Huckaby, 1958, fig. 9.) Bay, one for the First Naval District Office of Public Works and one for the Army Corps of Engineers. The principal objectives were to map bedrock under glacial deposits in parts of the Bay. Fig. 6 is representative of recordings obtained. Bedrock reflections and other shallower horizons were traceable over most of the areas studied. Beckmann et al. (1959) report surveys in Long Island Sound and Chesapeake Bay. Fig. 4 shows a beautifully clear recording of bedrock obtained at shallow depth with a spark sound source. In these surveys continuous profiles were successfully correlated with core samples and jaenetration tests measured by the number of blows per foot required to drive driUing tools into the sediment. Reflection depths agreed well with abrupt changes in the number of blows per foot.
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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectoceanbottom
