Samples from the Georges Bank Canyons acquired in 1936 (STETSON36 shapefile)

Submarine canyons cut into the edge of the continental shelf and the continental slope along much of the U.S. Atlantic coast. Three canyons along the southern edge of Georges Bank (Lydonia, Oceanographer, Gilbert) were dredged and cored to study their modern sediments and the lithologies and ages of the rocks exposed on the canyon walls. As part of this study eleven cores were taken and the results of the textural analyses on the surficial sediments are contained in this data set.

海底峡谷（submarine canyon）广泛切割了美国大西洋沿岸大部分区域的大陆架（continental shelf）边缘与大陆坡（continental slope）。坐落于乔治浅滩（Georges Bank）南部边缘的三座海底峡谷——利都尼亚（Lydonia）、海洋学家（Oceanographer）与吉尔伯特（Gilbert）——已完成拖网取样与岩芯钻探工作，以研究其现代沉积物、峡谷壁裸露岩石的岩性（lithology）与形成年代。作为本研究的一部分，本次共采集11根岩芯，本数据集收录了表层沉积物的结构分析结果。