Bottom Sediments -- Cape Ann to Casco Bay (FOLGER75 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 eastern New...本数据集所依托的踏勘测绘图（reconnaissance map），展示了新英格兰东部外海海底覆盖的主要海底沉积物类型的区域分布特征。