Trap rock
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- Trap Rock Ridges of Connecticut: Natural History and Land Use Penelope C
- Industrial Mineral Resource Assessment of the Nipissing Diabase
- East Rock Park IBA (Includes Edgerton Park and South Central Regional Water Authority Lands)
- The Diabase Basalt Forming the Palisades Cliffs and Similar Rocks Were Called “Traprock” (Or “Trapp Rock” Or Similar Terms, Meaning “Stepped Rock”) by Dutch Settlers
- Contents Part I What Is a Rock?... a Mineral?
- Geology of the Igneous Rocks of Essex County, Massachusetts
- Newington Walk Open Space Residential Subdivision
- Early Jurassic Diabase Sheets and Basalt Flows, Newark Basin, New Jersey: an Updated Geological Summary and Field Guide
- The Palisades Sill and Watchung Basalt Flows, Northern New Jersey and Southeastern New York: a Geological Summary and Field Guide
- Traprock Ridges of Central Connecticut: Overview of Conservation Values
- Geology and Mineral Resources Quakertown-Doylestown District Pennsylvania and New Jersey
- Bulletin 64, Trap Rock Minerals of New Jersey, 1960