Sediments of Buzzards Bay acquired in 1963 (MOORE63 shapefile)

공공데이터포털

A study of bottom sediment samples from Buzzards Bay, Massachusetts, provides a basis for establishing their major depositional facies and their relationships to the environmental framework. Texturally the sands tend to occur in shoaling areas of greater tidal-current activity, while the argillaceous sediments are deposited in deeper bathymetric entrapments.

Sediments of Buzzards Bay, MA (HOUGH40)

공공데이터포털

The modern sediments of Buzzards Bay are described principally by the use of quantitative data from mechanical analyses. The environment of the sediment and its source and mode of deposition are discussed in the original publication. Although Hough (1940) is available as part of the NGDC Deck41 database, additional data from the original report were manually entered and, therefore, this file is unique.

Sediments of Buzzards Bay, MA (HOUGH40)

공공데이터포털

The modern sediments of Buzzards Bay are described principally by the use of quantitative data from mechanical analyses. The environment of the sediment and its source and mode of deposition are discussed in the original publication. Although Hough (1940) is available as part of the NGDC Deck41 database, additional data from the original report were manually entered and, therefore, this file is unique.

Sediment-Texture Units of the Sea Floor for Buzzards Bay, Massachusetts (BuzzardsBay sedcover, polygon shapefile, Geographic, WGS84)

공공데이터포털

Geologic, sediment texture, and physiographic zone maps characterize the sea floor of Buzzards Bay, 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.

Sediment-Texture Units of the Sea Floor for Buzzards Bay, Massachusetts (BuzzardsBay sedcover, polygon shapefile, Geographic, WGS84)

공공데이터포털

Geologic, sediment texture, and physiographic zone maps characterize the sea floor of Buzzards Bay, 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.

Sediments of Western Mass Bay acquired in 1976 (MEISBURGER76 shapefile)

공공데이터포털

A seismic reflection survey with concurrent bottom sampling was conducted in western Massachusetts Bay to obtain information on bottom topography and sediments, subbottom structure and composition, and the location of sand deposits potentially usable for restoration and nourishment of nearby beaches. Primary sediment data was derived from 43 cores. The predominant sediments of the surface and shallow subsurface deposits in the study area are fine sand, sand and gravel, and clayey silt. Sand suitable for beach restoration and nourishment on the contiguous coast occurs only locally and in generally small quantity relative to other sediments of the study area.

Sediments of Western Mass Bay acquired in 1976 (MEISBURGER76 shapefile)

공공데이터포털

A seismic reflection survey with concurrent bottom sampling was conducted in western Massachusetts Bay to obtain information on bottom topography and sediments, subbottom structure and composition, and the location of sand deposits potentially usable for restoration and nourishment of nearby beaches. Primary sediment data was derived from 43 cores. The predominant sediments of the surface and shallow subsurface deposits in the study area are fine sand, sand and gravel, and clayey silt. Sand suitable for beach restoration and nourishment on the contiguous coast occurs only locally and in generally small quantity relative to other sediments of the study area.

Sediments of Narragansett Bay acquired in 1960 (MCMASTER60 shapefile)

공공데이터포털

Gravel, sand, silt, and clay contents were determined for samples from Narragansett Bay and the adjacent Rhode Island Shelf. In the Narragansett Bay system, clayey silt and sand-silt-clay are the most abundant sediments. Sand is abundant locally and on the inner shelf. In general, toward the lower passages of the Bay the sediments show a progressive change to coarser textures.

Sediments of Narragansett Bay acquired in 1960 (MCMASTER60 shapefile)

공공데이터포털

Gravel, sand, silt, and clay contents were determined for samples from Narragansett Bay and the adjacent Rhode Island Shelf. In the Narragansett Bay system, clayey silt and sand-silt-clay are the most abundant sediments. Sand is abundant locally and on the inner shelf. In general, toward the lower passages of the Bay the sediments show a progressive change to coarser textures.

Sediment Data from the Great Bay Estuarine System acquired in 1986 (NELSON86 shapefile)

공공데이터포털

The sediment data presented in this data layer were from a geochemical study sited in Great Bay estuarine system of New Hampshire. Textural data were used to support interpretations of trace metal distributions. The analog data were originally converted into digital form for inclusion in a Gulf of Maine Contaminated Sediments Database.