William P. Leeman
Professor

Research:

Geochemistry and igneous petrology with emphasis on relations between volcanism and tectonic evolution of the western U.S. and volcanic arcs worldwide. Geochemistry of boron and boron isotopes.

Main research topics concern the origin of magmas and their relation to specific tectonic settings:

• Hot-spot related magmatism (e.g., Hawaii, Snake River Plain)

• Extension-related magmatism (e.g., Cordilleran U.S.)

• Subduction-related magmatism (e.g. Cascades range)

In particular, I have focused on the geochemistry of boron and other trace elements and their isotopes in understanding the origins of volcanic rocks, magmatic and other fluids, and borosilicate minerals.

Selected Publications

Tonarini S., Citetta L., D'Antonio M., Ferrara G., Leeman W.P., and Necco A, "B/Nb and B isotopic systematics in the Phlegraean Volcanic district (PVD)," GNV Framework Program 2000/2002, 26 (2001): 72-77.

Woodford, D.T., Sisson, V.B., and Leeman, W.P., "Boron infiltration of the Alta Stock contact aureole, Utah: Evidence from mineral chemistry and geochemistry," American Mineralogist, 86 (2001): 513-533.

Dini, A., Tonarini, S., Leeman, W.P., Ertan, I.E., and Pezotta, F., "Geochemical behaviour of boron at the magmatic-hydrothermal transition: insights from d¹¹B of tourmaline in peraluminous granites (Elba Island, Italy)," Water-Rock Interaction 10, Balkema Press, (2001): 1513-1516.

Tonarini, S. Leeman, W.P., and Ferrara, G., "Boron isotopic variations in lavas flows of the Aeolian volcanic arc, Italy," Journal of Volcanology and Geothermal Research, 110 (2001): 155-170.

Chan, L.H., Leeman, W.P., and You, C.F., "Lithium isotopic composition of Central American volcanic arc lavas: Implications for modification of subarc mantle by slab-derived fluids: Correction," Chemical Geology, (2001).

Leeman, W.P., and Tonarini, S., "Boron isotopic analysis of proposed borosilicate mineral reference samples," Geostandards Newsletter, 25 (2001): 399-403.

Dyar, M.D., Wiedenbeck, M., Robertson, D., Cross, L.R., Delaney, J.S., Ferguson, K., Francis, C.A., Grew, E.S., Guidotti, C.V., Hervig, R.L., Hughes, J.M., Husler, J., Leeman, W.P., McGuire, A.V., Rhede, D., Rothe, H., Paul, R.L., Richard, I., and Yates, , "Reference minerals for microanalysis of light elements," Geostandards Newsletter, 25 (2001): 441-463.

Pennisi M., Leeman W.P., Tonarini S., Pennisi A., and Nabelek P.I. , "Boron, Sr, O, and H isotope geochemistry of groundwaters from Mt. Etna (Sicily) - hydrologic implications ," Geochimica et Cosmochimica Acta , 64 (2000): 961-974.

Ertan, I.E., and Leeman, W.P., "Fluid inclusions in mantle and lower crustal xenoliths from the Simcoe volcanic field, Washington," Washington Chem. Geol., 154 (1999): 83-95.

Bebout, G.E., Ryan, J.G., Leeman, W.P., and Bebout, A.E. , "Fractionation of trace elements by subduction-zone metamorphism - Effect of convergent margin thermal evolution," Earth Planet. Sci. Lett., 171 (1999): 63-81.

Chan, L.H., Leeman, W.P., and You, C.-F., "Lithium isotopic composition of Central American Volcanic Arc lavas: Implications for modification of subarc mantle by slab-derived fluids," Chem. Geol., 160 (1999): 255-280. [http://www.elsevier.nl/cas/tree/store/chemge/sub/1999/160/4/13380.pdf]

McMullan, R., Leeman, W.P., Harcombe, P., Martindill, A. , "Defining the potential for composting in a small urban university," Abst. National Biocycling Conf., Albuquerque, NM, (1999/May 17-18).

with S. Tonarini, A. Dini, and F. Pezotta., "Boron isotopic composition of zoned (schorl-elbaite) tourmalines, Mt. Capanne Li-Cs pegmatites, Elba (Italy). ," European Journal of Mineralogy, 10 (1998): 941-951.

Richter D.H., Ratte J.C., Leeman, W.P., and Menzies M.A., "Geologic Map of the McCarthy D-1 Quadrangle, Alaska," , U.S. Geological Survey Geological Investigations Series Map I-2695, (2000).

Pending Publications

Leeman, W.P., Tonarini, S., Pennisi, M., and Ferrara, G., "Boron isotopic variation in fumarolic condensates and thermal waters from Vulcano Island, Italy: Implications for evolution of volcanic fluids," Geochimica et Cosmochimica Acta, (submitted).