Education:

Ph.D. in Geology, 1993: Syracuse University, SYRACUSE, N.Y., U.S.A : Geochemical evolution of volcanic rocks in Puerto Rico.

Doctorandus Geology, 1976: Free University, AMSTERDAM, The Netherlands: Geology of the northern part of Åttu Island, Southwest Finland  and Geology of Quarter Degree Sheet 265, Tanzania.

Kandidaats Geology, 1972: Free University, AMSTERDAM, The Netherlands.

Research Interest: volcanic geochemistry, remote sensing of chemical anomalies using vegetation, XRD identification of archaeological ceramics, geology of ore deposits, metallogeny in island arcs, hydrothermal processes, Caribbean geology and tectonics.

2007: Jolly, Wayne T., J.H. Schellekens, Dickin, A.P., High-Mg andesites and associated lavas from southwest Puerto Rico (Greater Antilles island arc): Petrogenetic links with emplacement of the Late Cretaceous Caribbean Mantle Plume: Lithos vol. 98, p. 1-26

2007: Smith, A.L., Roobol, M.J., Schellekens, J.H., and Mattioli, G.S.,  Pre-historic volcanism of the Soufrière Hills-South Soufrière Hills volcanic complex, Southern Montserrat, West Indies: Journal of Geology. Vol. 115, p.115-127

2005: Schellekens, J.H., The 17^th Caribbean Geological Conference: EPISODES vol. 28, no 4, p. 293-294

2005: Schellekens, J.H., Gilbes, F., Rivera, G.D., Ysa, Y.C., Chardón, S., and Fong, Y., Reflectance spectra of tropical vegetation as a response to metal enrichment in the substrate of West-central Puerto Rico: Transactions 16^th Caribbean Geological Conference, Barbados: Caribbean Journal of Earth Sciences vol. 39, p.9-12.

2001: Lugo, A.E., Miranda Castro, L, Vale A., López, T, Hernández Prieto, E. ,  García Martinó, A., Puente Rolón, A. R.  Tossas, A.G., McFarlane, D. A., Miller, T. , Rodríguez, A., Lundberg, J.,  Thomlinson, J. , Colón, J., Schellekens, J.H. , Ramos, O., and Helmer, E., Puerto Rican karst -- A vital resource: Report U.S. Department of Agriculture, Forest Service Gen. Tech.  Report WO-65, 100p.

2001:  Lipin, B., Schellekens, J.H, and Meier, A.L.,  Distribution of platinum-group elements in nickel-bearing laterite in Puerto Rico, , in  Walter J. Bawiec (compiler) Geology, geochemistry, geophysics, mineral occurrences and mineral resource assessment of the Commonwealth of Puerto Rico: U.S. Geological Survey Open File report 98-38, p. 197-199, CD-ROM.

2001:  Krushensky, R.H. and Schellekens, J.H., Geology of Puerto Rico, in  Walter J. Bawiec (compiler) Geology, geochemistry, geophysics, mineral occurrences and mineral resource assessment of the Commonwealth of Puerto Rico: U.S. Geological Survey Open File report 98-38, p. 24-63, CD-ROM.

2001:  Bawiec, Walter J., Cox, Dennis P., McKelvey, Gregg E., Paidakovich, Matthew E. , Handler, Andrea, and Schellekens, Johannes H., Metallic and industrial mineral mines, prospects, and occurrences in Puerto Rico, as recorded in the Mineral Resource Data System (MRDS), in  Walter J. Bawiec (compiler) Geology, geochemistry, geophysics, mineral occurrences and mineral resource assessment of the Commonwealth of Puerto Rico: U.S. Geological Survey Open File report 98-38, p. 122-126, CD-ROM.

2001:  Bawiec, W.J., Cox, D.P., Griscom, A., Alonzo-Harris, R., Lipin, B.R., Marsh, S.P., McKelvey, G.E., Page, N.J./, Schellekens, J.H., Mineral resource assessment in Puerto Rico, in  Walter J. Bawiec (compiler) Geology, geochemistry, geophysics, mineral occurrences and mineral resource assessment of the Commonwealth of Puerto Rico: U.S. Geological Survey Open File report 98-38, p. 127-164 CD-ROM.

2000:  Schellekens, J.H., Caribische salsa van vulkanen en orkanen, KNGMG/ALW Nieuwsbrief (Newsletter Royal Netherlands Geological and Mining Association and Earth and Life Sciences) vol. 25, no. 5, p.10-11.

1998: Smith, A.L., Schellekens, J.H., Roobol, M. J.,  and Joyce, J., The stratigraphy and age of the White Wall Sugar Loaf sequence, St. Eustatius: Transactions 3rd Geological Conference of the Geological Society of Trinidad and Tobago and14th Caribbean Geological Conference, July 1995, Trinidad, volume 1, p. 2-12

1998: Smith, A.L., Schellekens, J.H., Frost, C. D. and Muriel Díaz, A-L, 1995 Geochemistry, radiometric ages, and isotopic compositions of plutonic rocks in the NE Caribbean -  Tectonic significance of their emplacement: Transactions 3rd Geological Conference of the Geological Society of Trinidad and Tobago and14th Caribbean Geological Conference, July 1995, Trinidad, volume 2, p. 388-427

1998:  Smith, A.L., Schellekens, J.H., and Muriel Díaz, A-L, Batholith emplacement in the northeastern Caribbean: markers of tectonic change:  in  E. Lidiak, and   D.K. Larue editors: Geochemistry and Tectonics of the Northeastern Caribbean, Geological Society of America Special Paper, vol. 322, p. 99-122.

1998:  Schellekens, J.H., Composition, metamorphic grade, and origin of metabasites in the Bermeja Complex, southwest Puerto Rico: International Geology Review, vol. 40, p. 722-747.

1998:  Schellekens, J.H. Geochemical Evolution and Tectonic History of Puerto Rico, in E. Lidiak, and   D.K. Larue editors: Geochemistry and Tectonics of the Northeastern Caribbean, Geological Society of America Special Paper  vol. 322, p. 35-66.

1998:  Jolly, W.T., Lidiak, E.G., Schellekens, J.H., and Santos, H., Volcanism, Tectonics, and stratigraphic correlations in Puerto Rico:  in  E. Lidiak, and   D.K. Larue editors: Geochemistry and Tectonics of the Northeastern Caribbean , Geological Society of America Special Paper, vol. 322, p. 1-34.

1998:  Frost, C.D., Schellekens, J.H., and Smith., A.L., Nd, Sr and Pb isotopic characterization of Cretaceous and Paleogene volcanic and plutonic island arc rocks from Puerto Rico : in  E. Lidiak, and   D.K. Larue editors: Geochemistry and Tectonics of the Northeastern Caribbean, Geological Society of America Special Paper, vol. 322, p. 123-132.

1994:  Montgomery, H.M., Pessagno, E.A. Jr., Lewis, J.F., and Schellekens, J.H., Paleogeographic history of Jurassic terranes in Puerto Rico and Hispaniola:  Tectonics vol. 13, p.725-732..

1992: Weaver, J.N. (editor/compiler), Mineral Resource Assessment of Puerto Rico, Field trip leaders: R.Alonzo, J.H. Schellekens, G.E. McKelvey, D.P. Cox: U.S. Geol. Survey Open-File Report 92-567, 43p.

1992: Lipin, B., Schellekens, J., and Meir, A.L., Geology and PGE potential, in:  J.N.Weaver, ed. Mineral resource assessment of Puerto Rico, U.S.Geol.Survey Open-File report 92-567, p.12-17.

1991: Schellekens, J.H., Tenth Annual Symposium on Caribbean Geology: "Tectonics and Mineral Deposits of the Caribbean." EPISODES, vol. 14 (2), p.143-144.

1991: Schellekens, J.H., Late Jurassic to Eocene geochemical evolution of volcanic rocks of Puerto Rico: Geophysical Research Letters vol. 18 (3), p.553-556.

1991: Reid, J., Plumley, P.W., and Schellekens, J.H., Paleomagnetic evidence for Late Miocene counterclockwise rotation of north coast carbonate sequence, Puerto Rico: Geophysical Research Letters vol. 18(3) p.565-568.

1991: Larue, D.K., Smith, A.L., and Schellekens, J.H.,  Oceanic island arc stratigraphy in the Caribbean region: don't take it for granite, in:   R. Cas and K. Busby-Spera (eds.) Volcaniclastic Sedimentation: Sedimentary Geology  vol. 74, 289-308.

1991: Frost, C.D. and Schellekens, J.H., Rb-Sr and Sm-Nd isotopic characterization of Eocene volcanic rocks from the Toa Baja borehole and the Eocene volcanic sequence, Puerto Rico: Geophysical Research Letters, vol. 18(3) p.545-548.

1990: Schellekens, J.H., Montgomery, H., Joyce, J., and Smith, A.L., Late Jurassic to Late Cretaceous development of island arc crust in southwestern Puerto Rico: in:  Larue, D.K. and Draper, G. (eds.), Transactions 12th Caribbean Geological Conference, St. Croix, U.S. Virgin Islands Aug. 1989, p.268-281.

1990: Donnelly, T.W., Beets, D.J., Carr, M.J., Jackson, T.A.,  Klaver, G., Lewis, J.F., Lidiak, E., Maury, R.C., Schellekens, J.H., Smith, A.L., Wadge, G., and Westercamp, D., History and geology of Caribbean Igneous rock series, in: Dengo, G. and Case J. (eds.), Geology of the Caribbean, Decade of N. American Geology vol. H. Geol. Soc. America p.339-374.

1989: Van Fossen M.C., Channell, J.E.T, and Schellekens, J.H., Paleomagnetic evidence for Tertiary anticlockwise rotation in Southwestern Puerto Rico: Geoph. Res. Letters vol. 16 (8), p.819-822.

1987: Schellekens, J.H., Smith, A.L., and Joyce, J., Geological studies in western Puerto Rico - A new look at an old problem: Transactions 10th Caribbean Geol. Conf. Cartagena, Colombia 1983, p.222-228.

1987: Schellekens, J.H., Metallogenesis of Puerto Rico,  Greater Antilles: Transactions 10th Caribbean Geological Conference, Cartagena, Colombia 1983, p.435-444.

1986: Schellekens, J.H., A Proterozoic island arc related volcanogenic sulfide deposit near Bahrah, Saudi Arabia: Econ. Geol. vol. 81, p.484-488.

1986: Hayes, J., Larue, D.K., Joyce, J., and Schellekens, J.H., Puerto Rico: Reconnaissance study of the maturation and source rock potential of an oceanic arc involved in a collision: Journal of Marine and Petroleum Geology, vol.3 (2), p.126-138.

1982: Schellekens, J.H., A preliminary description of the metallogeny of the Central-Eastern volcanic-plutonic province of Puerto Rico: Transactions 8th Symposium of Natural Resources, San Juan, p.162-170.

1981: Schellekens, J.H. and Duyverman, H.J., Precambrian geology of Tanzania, with emphasis on the Pan African, in: Jackson, N.J. (ed.), Late Proterozoic Stratigraphies of Northeast Africa and Arabia, IGCP-project 164, Report 1, p.94-105.

1981: Bokhari, M.M., Binda, P.L., and Schellekens, J.H., Evidence of former evaporites in Late Precambrian carbonate rocks of Jabal Rokham, Saudi Arabia: Bull. Fac. Earth Sci., King Abdulazziz University, vol. 4, p.149-158.