Geospatial Data Layers of Shallow Geology, Sea-Floor Texture, and Physiographic Zones from the Inner Continental Shelf of Martha's Vineyard from Aquinnah to Wasque Point, and Nantucket from Eel Point to Great Point

Geologic, sediment texture, and physiographic zone maps characterize the sea floor south and west of Martha's Vineyard and north of Nantucket, 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.

本数据集涵盖美国马萨诸塞州玛莎葡萄园岛（Martha's Vineyard）以南、以西及楠塔基特（Nantucket）以北海域的海底地质、沉积物纹理与地貌分区地图，用于表征该区域海底特征。上述地图基于地震反射剖面、高分辨率水深测量、声呐背散射强度、海底照片以及表层沉积物采样数据的解译成果编制而成。地震地层解译以及冰川与全新世海相地层单元的填图工作，为表层地图的编制奠定了基础。本次填图项目由美国地质调查局（U.S. Geological Survey）与马萨诸塞州海岸带管理办公室（Massachusetts Office of Coastal Zone Management）合作完成，旨在明确马萨诸塞州近海表层与地下地质结构特征。