Data from Oceanographer, Lydonia, and Gilbert Canyons acquired in 1965 (SCHWARTZ65 shapefile)

Submarine canyons occur at the edge of the continental shelf and cut across the slope and rise along the U.S. east coast. Three of these canyons (Oceanographer, Lydonia, and Gilbert) are situated south of Georges Bank. Gravity cores and grab samples were collected as part of a study of the active processes and sediment distributions within these features. The results of the textural analyses are contained in this data layer.

海底峡谷（submarine canyon）发育于大陆架边缘，横穿美国东海岸沿线的大陆坡与陆隆地带。其中三座海底峡谷——海洋学家号（Oceanographer）、利多尼亚号（Lydonia）与吉尔伯特号（Gilbert）——坐落于乔治滩（Georges Bank）以南。为探究这三处海底峡谷内部的活跃地质过程与沉积物分布特征，研究团队采集了重力岩芯（gravity core）与抓斗采样样品（grab sample）。本数据图层收录了上述样品的沉积物结构分析结果。