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BA (1981), MA (1988), ²ÝÝ®ÊÓƵ University

Mineralogy, surficial geology, environmental geology

The Critical Zone, soil formation, the impact of acid precipitation on soils and ecosystems, plant-soil interactions in the rhizosphere, clay minerals and phyllosilicates, wollastonite weathering and related carbon sequestration

(*indicates student author)

• April, R., Keller, D. and Hluchy, M., Soils and Soil Acidification in the Adirondack Mountains, 2016. Adirondack Journal of Environmental Studies, 21, 147-166.

• Shale to soil: Geochemistry and clay mineral transformations. R.H. April, S. Lemon* & D. Keller, Mineralogical Magazine, 2011, Volume 75, Issue 3. Goldschmidt 2011. 

• Clay mineral weathering in shales and soils in the critical zone, S. MacDonald*, R.H. April and D.M. Keller. Special edition of Geochimica et Cosmochimica Acta, Volume 74, Issue 11 Supplement 1 (A652), June 2010. 

• April, R. H., Keller, D. M. and Driscoll, C., 2004, Smectite in Spodosols from the Adirondack Mountains of New York. Clay Minerals., v. 39: 99-113. 

• April, R. H., and Keller, D., 1992, Saponite and vermiculite in amygdales of the Granby Basaltic Tuff, Connecticut Valley: Clays and Clay Minerals, v. 40, no. 1, 22-31. 

• April, R.H., and Keller, D., 1990, Interactions between minerals and roots in forest soils: Sciences Geologiques Mem., no. 85, 89-98, Strasbourg, France. 

• April, R.H., and Keller, D., 1990, Mineralogy of the rhizosphere in forest soils of the eastern United States: Biogeochemistry, v. 9, 1-18. 

• Keller, D. and April, R.H., 1989, Biotite Weathering in Forest Soils from the Eastern United States, Clays and Clay Minerals, Vol. 37, No. 6, 605-607 

• Kada, J., Heit, M., April, R.H., Miller, K., Keller, D., and Kuiper, J., 1989, Factors influencing the distribution and inventories of Cs-137 in fresh water lake sediments: Proceedings of the 7th International Conference on Heavy Metals in the Environment, Geneva, Switzerland, 12-15 September.