Frantic digging in my office drawers produced a few more geology postcards. This one is published by the Vermont Geological Survey. The bedrock of Vermont is mostly metamorphic rocks. Here, they have different colors depending on their age, PreCambrian or younger. The red blobs on the eastern side of the state are igneous intrusions, now exposed at the surface. With the swirls, the geology looks rather artistic.
A more detailed PDF of Vermont Geology is at http://www.anr.state.vt.us/DEC/GEO/images/gengeo52.pdf. (The file is over 9 mb in size - it may take a bit to download. Of course, if you want a SERIOUSLY detailed map and cross-sections, just go to http://www.anr.state.vt.us/DEC/GEO/centmap.htm.
Like the other New England states, Vermont has been affected by several mountain-building events in the distant past. However now it has beautiful green mountains and valleys with classic picturesque villages, churches, and farmsteads. To give you an idea, I suggest you look at the photos of John David Geery. I have no affiliation - just found these beautiful photos on the Internet.