Derry, LA, JC Pett-Ridge, AC Kurtz, and JW Troester. 2006. Ge/Si and sr-87/Sr-86 tracers of weathering reactions and hydrologic pathways in a tropical granitoid system. Journal of Geochemical Exploration 88 (1-3) (JAN-MAR): 271-4.
Sr isotope data from soils, water, and atmospheric inputs in a small tropical granitoid watershed in the Luquillo Mountains
of Puerto Rico constrain soil mineral development, weathering fluxes, and atmospheric deposition. This study provides
new information on pedogenic processes and geochemical fluxes that is not apparent in watershed mass balances based on
major elements alone. 87Sr/86Sr data reveal that Saharan mineral aerosol dust contributes significantly to atmospheric inputs.
Lugolobi, Festo, Andrew C. Kurtz, and Louis A. Derry. 2010. Germanium-silicon fractionation in a tropical, granitic weathering environment. Geochimica Et Cosmochimica Acta 74 (4) (FEB 15): 1294-308.
Kurtz, A. C., F. Lugolobi, and G. Salvucci (2011), Germanium‐silicon as a flow path tracer: Application to the Rio
Icacos watershed, Water Resour. Res., 47, W06516, doi:10.1029/2010WR009853.
Pett-Ridge J. C., Derry L. A. and Kurtz A. C. (2009) Sr isotopes as
a tracer of weathering processes and dust inputs in a tropical
granitoid watershed, Luquillo Mountains, Puerto Rico. Geochim.
Cosmochim. Acta 73, 25–43.