TY - MAP T1 - [Draft] Surficial materials map of the Marlborough quadrangle, Massachusetts Y1 - 2004 A1 - Byron D Stone A1 - Hildreth C.T. A1 - Stephen B Mabee KW - #MGSPub KW - #Subsurface KW - #SurficialMaps KW - 3D KW - Ashland KW - Berlin KW - glacial KW - Hopkinton KW - Hudson KW - Malborough KW - Northborough KW - outwash KW - Southborough KW - stratified drift KW - surficial KW - till KW - Westborough AB -

This map shows the stacked vertical distribution of nonlithified surficial earth materials within the Marlborough quadrangle. This series of maps shows these deposits as they are vertically arranged in units from bottom to top. Surficial materials include mineral and rock particles in glacial deposits, and mineral, rock, and organic particles in postglacial deposits. Surficial materials also are known in engineering classifications as unconsolidated soils, which include coarse grained soils, fine grained soils, or organic fine grained soils. Surficial materials underlie and are the parent materials of modem pedogenic soils which have developed in them at the land surface. Delineation of the materials is based on surficial geologic mapping (Stone, 1978, Hildreth, 2003, 2004), the identification of glacial meltwater morphosequence deposits, knowledge of the deglaciation history of New England, and examination of borehole logs and water well records. For this set of maps, glacial meltwater deposits are distinguished by their geomorphologic expression, sediment type, and depositional environment. These deposits are further subdivided into a series of related glacial sedimentary facies, which are stacked vertically within each glaciaodeltaic or lake-bottom deposit. Postglacial deposits at the land surface are differentiated by their sediment type and geomorphic expression. The principal surficial materials map shows the distribution of these materials exposed at land surface. The smaller inset maps (maps A-F) show the surface and subsurface distribution of the glacial meltwater deposits , including the distribution of specific sedimentary facies that compose these meltwater deposits. By using each inset map in sequence both the lateral extent and vertical arrangement of the deposits at a particular location can be estimated from bottom to top.

JF - Open-File Report PB - Massachusetts Geological Survey U1 -

GIS Files and metadata forthcoming

U2 -

1:24000

ER - TY - MAP T1 - Prototype three-dimensional surficial materials map of the Marlborough quadrangle, Massachusetts Y1 - 0 A1 - Steven A Nathan A1 - Stephen B Mabee KW - #MGSPubs KW - #SurficialMaps KW - 3D KW - Ashland KW - Berlin KW - glacial KW - Hopkinton KW - Hudson KW - Malborough KW - Northborough KW - Southborough KW - subsurface KW - surface KW - surficial KW - Westborough AB -

This map integrates well-drilling data with surficial geologic mapping and bedrock geology to produce a true three-dimensional model of the subsurface conditions within the Marlborough quadrangle, Massachusetts. The first component of this model is a map depicting a three-dimensional block diagram of the stratigraphic units that overlie the bedrock surface. The map also presents three-dimensional depictions of the individual stratigraphic units, their aerial extent and volumes.

In addition to the map, the supporting grid files, database and documentation for the three-dimensional model are provided.

This three-dimensional model of the subsurface stratigraphy of the Marlborough quadrangle provides a tool to visualize and explore the relationships of the subsurface units to one another, to the underlying bedrock, and to the water bearing fractures within the bedrock.

There are three immediate benefits of this three-dimensional model:

  1. it provides a better estimate of the volume of sand and gravel resources, surpassing current assessments it affords an estimate of the volume of water available in storage, making it a more complete measure of our water assets.
  2. it includes grid files of each stratigraphic unit, which provides a better initial conceptual model of the aquifer systems. The consulting community and water managers can import these grid files into groundwater modeling software for numerical analysis. In addition, the three-dimensional model can better delineate ground water flows, areas of groundwater recharge, and aquifer interconnectedness.
  3. It will also help identify possible contaminant pathways and assist in the placement of ground water monitoring wells. The model can also be used to assist with the planning of major construction projects, assess the impacts from development, provide guidance for land use planning and smart growth initiatives. In total, a three-dimensional model of the subsurface provides critical geologic information for natural resource decision making.
JF - Open-File Report PB - Massachusetts Geological Survey ER - TY - RPRT T1 - Field Investigation of the Geology and Possible Pisolitic Bauxite Occurrence at Menemsha Hills Reservation, Martha’s Vineyard, Massachusetts Y1 - 2008 A1 - Stephen B Mabee A1 - Panish, P. KW - #MGSPub KW - #MGSPubs KW - #Minerals KW - #Reports KW - aluminum KW - bauxite KW - ferricrete KW - glacial KW - hematite KW - Holocene KW - Martha's Vineyard KW - Menemsha Hills KW - minerals KW - ore KW - oxides KW - pisolite KW - pisolitic KW - precipitation KW - reservation KW - thrust faults KW - Trustees KW - Vineyard AB - The Office of the Massachusetts State Geologist was asked by The Trustees of Reservations to make an assessment of an unusual deposit of what appears to be pisolitic bauxite or iron hardpan exposed on the beach at Menemsha Hills Reservation in Chilmark, Massachusetts. The formation occurs as thin 10-20 cm wide lenses extending from 0.5 to 6 meters in length. They are found most commonly along a 200 to 250 meter section of the shore in the intertidal zone. The intact lenses trend northeast at about 25° to 35° and dip at 61° to 75°. The material occurs in a variety of forms. These include hematite and clay rich botyoidal (grape-like) surfaces, as iron hardpan cementing together gravel and pebble-sized stones, and as 1-2 cm wide pisolites (concentrically layered round structures). Prepared for the Trustees of Reservations PB - Office of the Massachusetts State Geologist CY - Amherst, MA UR - http://www.geo.umass.edu/stategeologist/Products/reports/FinalReport.pdf ER - TY - RPRT T1 - Origin of the Rocks at Bishop and Clerks Shoal and Collier Ledge, Nantucket Sound, Massachusetts – Field Report Y1 - 2005 A1 - Stephen B Mabee KW - #MGSPub KW - #Reports KW - Bishop and Clerks KW - boulders KW - CapeWind KW - Collier Ledge KW - glacial KW - lighthouse KW - Nantucket Sound AB - Submitted to the U.S. Department of Interior and Minerals Management Service and Massachusetts Highway Department 34 pages contact sbmabee @geo.umass.edu PB - Massachusetts Geological Survey ER -