Hillshaded-relief image produced from the late Wisconsinan to early Holocene regressive unconformity (Ur) beneath Vineyard and western Nantucket Sounds, Massachusetts (GeoTIFF Image; UTM, Zone 19N, WGS 84)

Geologic, sediment texture, and physiographic zone maps characterize the sea floor of Vineyard and western Nantucket Sounds, Massachusetts. These maps were derived from interpretations of seismic-reflection profiles, high-resolution bathymetry, acoustic-backscatter intensity, bottom photographs, and surficial sediment samples. The interpretation of the seismic stratigraphy and mapping of glacial and Holocene marine units provided a foundation on which the surficial maps were created. This mapping is a result of a collaborative effort between the U.S. Geological Survey and the Massachusetts Office of Coastal Zone Management to characterize the surface and subsurface geologic framework offshore of Massachusetts.

美国马萨诸塞州葡萄园湾（Vineyard Sound）与南塔基特湾西部海域的海底特征，可通过地质、沉积物纹理及地貌分区三类地图进行表征。上述地图的编制基于对地震反射剖面、高分辨率水深测量数据、声学反向散射强度、海底照片以及表层沉积物样品的解译分析。对地震地层学的解译以及冰川与全新世海相地层单元的填图工作，为表层海底地图的编制奠定了基础。本次填图工作是美国地质调查局（U.S. Geological Survey）与马萨诸塞州海岸带管理办公室（Massachusetts Office of Coastal Zone Management）通力合作的成果，旨在表征马萨诸塞州近岸海域的表层与地下地质框架。