The article presents a map showing the types of rocks and their chemical makeup in the New England region. The researchers grouped the rocks based on their composition and age, creating a dataset called NE_LITH. They used data from different areas to cover states like Connecticut, Maine, and Vermont. The map includes information on the state, rock type, and specific characteristics of the bedrock. This study helps us understand the different types of rocks in New England and how they vary across the region.