![](https://mgs.geo.umass.edu/sites/mgs.geo.umass.edu/files/styles/page-image-250/public/Newton_GM-17-01_map_print.png?itok=lyEqwEvw)
We are pleased to make Dr. Margaret D. Thompson's bedrock geologic map of the Newton 7.5' quadrangle available. This map has been peer reviewed, and represents decades of field mapping and careful geochronology to delineate the stratigraphic distribution of units within the Boston Basin. The map can be downloaded here.