We are interested in the spatial variability of dust deposition in the Luquillo Mountains. We are working on understanding controls on dust deposition such as topography and vegetation, the mechanisms of dust deposition including the relative importance of wet versus dry deposition, and the implication of dust as a nutrient source for Luquillo ecosystems. We are using geochemical tracers including trace element ratios, rare earth element patterns, and Sr and Nd isotopes to study soils in the Luquillo CZO.
Underlying lithology controls trace metal mobilization during redox fluctuations. King, E.K., Thompson, A., Pett-Ridge, J.C. (2019): Science of Total Environment. 665: 1147-1157.
The effects of lithology on trace element and REE behavior during tropical weathering. Chapela Lara, M., Buss, H.L., Pett-Ridge, J.C. (2018): Chemical Geology. 500: 88-102
Potential for iron reduction increases with rainfall in montane basaltic soils of Hawaii. Hodges, C., E. King, J. Pett-Ridge, A. Thompson (2018): Soil Science Society of America Journal 82:176-185 Cross-CZO
Reassessing the dissolved molybdenum isotopic composition of ocean inputs: The effect of chemical weathering and groundwater. King, E.K. and Pett-Ridge, J.C. (2018): Geology 46 (11): 955-958 Cross-CZO National
Spatial variability of African dust in soils in a montane tropical landscape in Puerto Rico. McClintock, M. A., Brocard, G., Willenbring, J., Tamayo, C., Porder, S., & Pett-Ridge, J. C (2015): Chemical Geology
Spatial variability of African dust in soils in a montane tropical landscape in Puerto Rico. McClintock, M. A., Brocard, G., Willenbring, J., Tamayo, C., Porder, S., & Pett-Ridge, J. C. (2015): Chemical Geology
2015 (In Review)
African dust deposition in Puerto Rico; analysis of a 20 year rainfall chemistry record and comparison with models. McClintock, M.A., McDowell, W.H., Gonzalez, G., Schulz, M., and PettRidge, J.C. (2015): Journal of Geophysical Research Atmospheres
Linking geomorphology, weathering and cation availability in the Luquillo Mountains of Puerto Rico. Porder S., Johnson A.H., Xing H.X., Brocard G., Goldsmith S. PettRidge J. ( (2015): 10.1016/j.geoderma.2015.03.002
Molybdenum isotope fractionation in soils: Influence of redox conditions, organic matter, and atmospheric inputs. Siebert, C. Pett-Ridge, J.C. Opfergelt, S. Guicharnaud, R.A. Halliday A.N., Burton K.W. (2015): Geochimica et Cosmochimica Acta
Papers and books that explicitly acknowledge a CZO grant are highlighted in PALE ORANGE.
Atmospheric Hot Spots and Hot Moments for dust inputs. Pett-Ridge J. (2015): Luquillo CZO Cyber Seminar
Molybdenum isotope fractionation in the critical zone
Moscone West 2007 session EP14A.