Sediments off Cape Ann to Cape Cod, MA acquired in 1973 (SCHLEE73 shapefile)

The reconnaissance maps upon which this data set is based show the areal distribution of the major bottom sediment types covering the sea floor off Massachusetts between Cape Ann and Cape Cod. The maps were intended as a guide to the future mapping of gravel, sand, silt, and clay, and, because these sediments reflect the hydraulic conditions, they are also helpful for deducing the important sediment transport mechanisms.

本数据集所依托的概略勘察图，展示了马萨诸塞州沿岸安角（Cape Ann）与科德角（Cape Cod）之间近海海底的主要底质类型平面分布。该制图成果旨在为砾石、砂、粉砂与黏土的后续填绘工作提供指引；由于上述沉积物类型可反映区域水动力条件，因此也可用于推演关键的沉积物输运机制。