%0 Map %D 2013 %T Slope Stability Map of Massachusetts %A Stephen B Mabee %A Duncan, C. %K #Hazards %K #Landslides %K #MGSPub %K #MGSPubs %K #NaturalHazards %K Holocene %K infinite slope model %K Irene %K landslide %K rockslide %K slope %K slope failure %K stability %K steep %K steepness %K surficial %X The purpose of this project is to prepare an updated map of potential landslide hazards for the Commonwealth of Massachusetts. The intent is to provide the public, local government and local and state emergency management agencies with a map showing the location of areas where slope movements have occurred or may possibly occur in the future under the right conditions of prolonged antecedent moisture and high intensity rainfall. It is hoped that this information will be included in the Statewide Hazard Mitigation Plan upon its next update. It is also anticipated that MassDOT and municipalities will find this information useful in planning upgrades and improvements to culverts and drainage along roadways in the future. Three slope stability maps are provided at a scale of 1:125,000. Each sheet is 48 inches by 36 inches when printed. Sheet 1 covers western Massachusetts, Sheet 2, northeastern Massachusetts including the Boston area, and Sheet 3 covers southeastern Massachusetts, Cape Cod and the Islands. Data are also available as ESRI ArcGIS data files. %B MGS Miscellaneous Map %7 13-01 %I Massachusetts Geological Survey %G eng %1 Map comprised of report and 3 sheets. %2 1:125000 %0 Report %D 2008 %T Field Investigation of the Geology and Possible Pisolitic Bauxite Occurrence at Menemsha Hills Reservation, Martha’s Vineyard, Massachusetts %A Stephen B Mabee %A Panish, P. %K #MGSPub %K #MGSPubs %K #Minerals %K #Reports %K aluminum %K bauxite %K ferricrete %K glacial %K hematite %K Holocene %K Martha's Vineyard %K Menemsha Hills %K minerals %K ore %K oxides %K pisolite %K pisolitic %K precipitation %K reservation %K thrust faults %K Trustees %K Vineyard %X 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 %I Office of the Massachusetts State Geologist %C Amherst, MA %G eng %U http://www.geo.umass.edu/stategeologist/Products/reports/FinalReport.pdf %9 4/2008