Region 1: Inland Basin
The sedimentary rocks of the Inland Basin provide dimension stone, industrial sand, cement, concrete, clay and carbonate rocks, economically important regional resources. The metamorphic rocks of the Adirondacks are quarried for use as dimension stone. The region also has sizeable fossil fuel resources, including bituminous coal, oil and gas.
Region 2: Appalachian/Piedmont
The Appalachian/Piedmont has a variety of non-mineral resources because of the variety of rock types within the region. Sedimentary rocks produce clay, lime, crushed stone, industrial sand and brownstone. Metamorphic rock resources include marble, slate and serpentine. The Triassic rift basins in the region produce the igneous rock diabase for use as a dimension stone. Anthracite, the hardest form of coal, is also in the folded rocks of the region.
Region 3: Coastal Plain
Sand and gravel, greensand, and soil are the most important non-mineral resources of the Coastal Plain. Because a wedge of unconsolidated sediments underlies the Coastal Plain, there are no igneous, metamorphic or sedimentary rock resources produced in the region.
Region 4: Exotic Terrane
The primary non-mineral resource of the Exotic Terrane are very similar to the Appalachian/Piedmont region because of similar rock types. Brownstones, clay, shale, cement and crushed rock are important sedimentary rock resources. Granite, from numerous igneous intrusions during the Taconic and Acadian mountain-building events, and quartzite, a metamorphic rock, are quarried throughout the region.
All four regions of the Northeast have glacial deposits that provide important non-minerals resources, including clay, peat, soil, sand and gravel.