Dr. A. Joshua West

Representative Academic Publications (updated January 2017)

Bold and italicized: authors who are or were students or postdocs under my supervision; * indicates students at USC

Publications listed in chronological order; does not include conference abstracts

doi numbers provide live links to online versions of each article


Manuscripts in review or in revision:

Roback, K., Clark, M.K., West, A.J., Zekkos, D., Li, G.*, Gallen, S.F., Chamlagain, D., and Godt, J.W. USGS Open File Report.

Pogge von Strandmann, P.A.E., Renforth, P., West, A.J., Murphy, M., Luu, T.-H., and Henderson, G.M. The lithium and magnesium isotope signature of olivine dissolution in soil core weathering experiments.

Li, G.*, West, A.J., Densmore, A.L., Jin, Z., Zhang, F., Wang, J., Clark, M.K., and Hilton, R.G. Earthquakes drive focused denudation along a tectonically-active mountain front.

Yager, J.A.*, West, A.J., Corsetti, F.A., Berelson, W.M., Rollins, N.E., Rosas, S., Bottjer, D.J. Duration and decoupling of carbon isotope excursions associated with the end-Triassic mass extinction and emplacement of the Central Atlantic Magmatic Province.

Torres, M.A*, Dong, S.*, Nealson, K., and West, A.J. Microbial acceleration of olivine dissolution via siderophore production.

Torres, M.A.*, Baronas, J.J.*, Clark, K.E., Feakins, S.F., and West, A.J. Mixing as a driver of temporal variations in river hydrochemistry. Part 1: insights from water isotopes in the Andes-Amazon.

Baronas, J.J.*, Torres, M.A.*, Clark, K.E., and West, A.J. Mixing as a driver of temporal variations in river hydrochemistry. Part 2: Major and trace element concentration dynamics in the Andes-Amazon

Torres, M.A.*, Moosdorf, N., Hartmann, J., Adkins, J., and West, A.J. Chemical weathering under ice: impacts on the present and past carbon cycle.


Papers published for online discussion and currently in review or in revision:

None currently


Peer-reviewed papers published since arrival at USC:

(54) Roback, K., Clark, M.K., West, A.J., Zekkos, D., Li, G.*, Gallen, S.F., Chamlagain, D., and Godt, J.W. 2017. The size, distribution, and mobility of landslides caused by the 2015 Mw7.8 Gorkha earthquake, Nepal. In press, Geomorphology.

(53) Clark, K.E.*, Hilton, R.G., West, A.J., Robles Caceres, A., Grocke, D.R., Marthews, T.R., Ferguson, R.I., Asner, G.P., New, M., and Malhi, Y. 2017. Erosion of organic carbon from the Andes and its effects on ecosystem carbon dioxide balance. In press, Journal of Geophysical Research – Biogeosciences.

(52) Pinedo-Gonzalez, P.*, Hellige, B.*, West, A.J., and Sañudo-Wilhelmy, S.  2016. Changes in size fractionation of metals in storm runoff following wildfires: implications for the transport of bioactive trace metals. Applied Geochemistry (doi: 10.1016/j.apgeochem.2016.07.016)

(51) Torres, M.*, West, A.J., Clark, K.C., Paris, G., Bouchez, J., Ponton, C.*, Feakins, S., Adkins, J. 2016. The acid and alkalinity budgets of weathering in the Andes-Amazon system: The acid and alkalinity budgets of weathering in the Andes-Amazon system. Earth and Planetary Science Letters 450: 381-391. (doi: 10.1016/j.epsl.2016.06.012)

(50) Li, G.*, West, A.J., Densmore, A.L., Hammond, D.E., Jin, Z., Zhang, F., Wang, J., and Hilton R.G. 2016. Connectivity of earthquake-triggered landslides with the fluvial network: implications for landslide sediment transport after the 2008 Wenchuan earthquake. Journal of Geophysical Research – Earth Surface 121: 703-724. (doi: 10.1002/2015JF003718)

(49) Thibodeau, A.M., Ritterbush, K., Yager, J.*, West, A.J., Ibarra, Y., Bottjer, D., Berelson, W., Bergquist, B.A., and Corsetti, F. 2016. Mercury anomalies, volcanism, and timing of biotic recovery following the end-Triassic mass extinction. Nature Communications 7: 11147. (doi: 10.1038/ncomms11147)

(48) Wang, J., Jin, Z., Hilton, R.G., Zhang, F., Li, G.*, Densmore, A.L., Gröcke, D.R., Xu., X., and West, A.J. 2016. Earthquake-triggered increase in biospheric carbon export from a mountain belt. Geology 44: 471-474. (doi: 10.1130/G37533.1)

(47) Clark, K.E.*, West A.J., Hilton R.G., Asner G.P., Silman M.R., Saatchi S., Quesada C.A., Farfan Rios W., Martin R.E., New M., and Malhi Y. 2016. Storm-triggered landslides in the Peruvian Andes and implications for topography, carbon cycles, and biodiversity. Earth Surface Dynamics 4: 47-70.

(46) Li G-J., Hartmann J., Derry L.A., West A.J., Louvat P., You C.-F., Li G.*, Long X. Li L., Qiu W., Liu L., Chen Y., Ji J., and Chen J. 2016. Temperature dependence of basalt weathering. Earth and Planetary Science Letters 443: 59-69. (doi: 10.1016/j.epsl.2016.03.015)

(45) Feng, X., Feakins, S.J., Liu, Z., Ponton, C., Wang, R.Z., Karkabi, E., Galy, V., Berelson, W.M., Nottingham, A.T., Meir, P., West, A.J. 2016. Source to sink: Evolution of lignin composition in the Madre de Dios River system with connection to the Amazon basin and offshore. Journal of Geophysical Research – Biogeosciences 121: 1316-1338. (doi: 10.1002/2016JG003323)

(44) Feakins, S.J., Bentley, L.P., Salinas, N., Shenkin, A., Blonder, B., Goldsmith, G.R., Ponton, C., Arvin, L.J., Wu, M.S., Peters, T., West, A.J., Martin, R.E., Enquist, B.J., Asner, G.P., Malhi, Y. 2016. Plant leaf wax biomarkers capture gradients in hydrogen isotopes of precipitation from the Andes and Amazon. Geochimica et Cosmochimica Acta 182: 155-172. (doi: 10.1016/j.epsl.2016.03.015)

(43) Jin, Z., West, A.J., Zhang, F., Zhisheng, A., Hilton, R.G., Yu, J., Wang, J., Li, G.*, Deng, L., and Wang, X. 2015. Seismically enhanced solute fluxes in the Yangtze River headwaters following the A.D. 2008 Wenchuan earthquake. Geology 44: 47-50.

(42) Pinedo-González, P.*, West, A.J., Tovar-Sanchez, A., Duarte, C., Marañon, E., Cermeño, P., Gonzalez, N., Sobrino, C., Huete-Ortega, M., Fernandez, A, Lopez-Sandoval, D.C., Vidal, M., Blasco, D., Estrada, M., and Sañudo-Wilhelmy, S. 2015. Surface distribution of dissolved trace metals in the oligotrophic ocean and their influence on phytoplankton biomass and productivity. Global Biogeochemical Cycles 29: 1763-1781. (doi: 10.1002/2015GB005149)

(41) Bagard, M.-L.*, West, A.J., Newman, K., and Basu, A. 2015. Lithium dissolved fluxes and isotope fractionation in the Ganges floodplain and Bengal groundwater systems. Earth and Planetary Science Letters 432: 404-414. (doi: 10.1016/j.epsl.2015.08.036)

(40) Torres, M.A.*, West, A.J., and Clark, K.E. 2015. Geomorphic regime modulates hydrologic control of chemical weathering in the Andes-Amazon. Geochimica et Cosmochimica Acta 166: 105-128.

(39) West A.J., The ASTER Team, Bickle M.J., and Ojha T. 2015. High natural erosion rates are the backdrop for present-day soil erosion in the agricultural Middle Hills of Nepal. Earth Surface Dynamics 3: 363-387.

(38) Wang J., Jin Z.D., Hilton R.G., Zhang F., Densmore A.L., Li G.*, and West A.J. 2015. Controls on fluvial evacuation of sediment from earthquake-triggered landslides. Geology 43: 115-118. doi:10.1130/G36157.1

(37) Li G.*, Wang X., Yang Z., Mao C., West A.J., and Ji J. 2015. Dam‐triggered organic carbon sequestration makes the Changjiang (Yangtze) river basin (China) a significant carbon sink. Journal of Geophysical Research - Biogeosciences 120: 10.1002/2014JG002646. doi :10.1002/2014JG002646

(36) Ritterbush K.A., Rosas S., Corsetti F.A., Bottjer D.B., and West A.J. 2015. Andean sponges reveal long-term benthic ecosystem shifts following the end-Triassic mass extinction. Palaeogeography, Palaeoclimatology, Palaeoecology 420: 193-209. doi:10.1016/j.palaeo.2014.12.002

(35) Corsetti, F.A., Ritterbush, K.A., Bottjer, D.J., Greene, S., Ibarra, Y., Yager, J.A., West, A.J., Berelson, W.M., Rosas, S., Becker, T.W., Levine, N.M., Loyd, S.J., Martindale, R.C., Petryshyn, V.A., Carroll, N.R., Petsios, E., Pietsch, C., Stellmann, J.L., Thompson, J.R., Washington, K.A. & Wilmeth, D.T. 2015. Investigating the paleoecological consequences of supercontinent breakup: sponges clean up in the Early Jurassic. The Sedimentary Record 13: 4-10.

(34) Clark K.E., Torres M.A.*, West A.J., Hilton R.G., New M., Horwath A.B., Fisher J.B., Rapp J.R., Caceres A.R., Malhi Y. 2014. The hydrological regime of a forested tropical Andean catchment. Hydrology and Earth System Sciences 18: 5377-5397. doi:10.5194/hess-18-5377-2014

(33) Ponton C.*, West A.J., Feakins S., and Galy V. 2014. Leaf wax biomarkers in transit record river catchment composition. Geophysical Research Letters 41: 6420-6427. doi :10.1002/2014GL061328

(32) Li G-J. and West A.J. 2014. Evolution of Cenozoic seawater lithium isotopes: coupling of global denudation regime and shifting seawater sinks. Earth and Planetary Science Letters 401: 284-293. doi: 10.1016/j.epsl.2014.06.011

(31) Pinedo-Gonzalez P.*, West A.J., Rivera-Duarte I., and Sañudo-Wilhemy S.A. 2014. Diel changes in trace metal concentration and distribution in coastal waters: Catalina Island as a study case. Environmental Science & Technology 48: 7730-7737. doi: 10.1021/es5019515

(30) West A.J., Hetzel R., Li G.*, Jin Z.D., Zhang F., Densmore A.L., and Hilton R.G. 2014. Dilution of 10Be in detrital quartz by earthquake-induced landslides: implications for determining denudation rates and potential to provide insights into landslide sediment dynamics. Earth and Planetary Science Letters 396: 143-153. doi: 10.1016/j.epsl.2014.03.058

(29) Torres M.*, West A.J. and Li G-J. 2014. Sulphide oxidation and carbonate weathering as a source of CO2 over geological timescales. Nature, 507: 346-349. doi: 10.1038/nature13030

(28) Li G.*, West A.J., Densmore A., Jin Z.D., Parker R., and Hilton R.G. 2014. Seismic mountain building: landslides associated with the 2008 Wenchuan earthquake in the context of a generalized model for earthquake volume balance. Geochemistry, Geophysics, Geosystems 15: 833-844. doi: 10.1002/2013GC005067

(27) Gregory L.C., Thomas A.L., Walker R.T., Garland R., MacNiocall C., Fenton C.R., Bayasgalan A., Amgaa T., Gantulga B., Rhodes A., Xu S., West A.J., and Schnabel C. 2014. Combined uranium series and 10Be cosmogenic exposure dating of surface abandonment: a case study from the Ölgiy strike-slip fault in western Mongolia. Quaternay Geochronology 24: 27-43. doi: 10.1016/j.quageo.2014.07.005

(26) Opfergelt S., Burton K.W., Georg B., West A.J., Guicharnaud R., Sigfusson B., Siebert C., Gislason S.R., and Halliday A.N. 2014. Magnesium retention on the soil exchange complex controlling Mg isotope variations in soils, soil solutions, and vegetation in volcanic soils, Iceland. Geochimica et Cosmochimica Acta 125: 110-130. doi: 10.1016/j.gca.2013.09.036

(25) Hartmann J., Moosdorf N., Lauerwald R., Hinderer M., and West A.J. 2014. Global chemical weathering and associated P-release - the role of lithology, temperature and soil properties. Chemical Geology 363: 145-163. doi: 10.1016/j.chemgeo.2013.10.025

(24) West A.J., Fox M., Walker R.T., Carter A., Harris T., Watts A.B., and Gantulga B. 2013. Links between climate, erosion, uplift, and topography during intracontinental mountain building of the Hangay Dome, Mongolia. Geochemistry, Geophysics, Geosystems 14: 5171-5193. doi: 10.1002/2013GC004859

(23) Hartmann J., West A.J., Renforth, P., Koehler P., de la Rocha C., Wolf-Gladrow D., Durr H., and Scheffran J. 2013. Enhanced chemical weathering as a geoengineering strategy to reduce atmospheric carbon dioxide, supply nutrients, and mitigate ocean acidification. Reviews of Geophysics 51: 113-149. doi: 10.1001/rog.20004

(22) Georg R.B., West A.J., Vance D., Newman K., and Halliday A.N. 2013. Is the marine osmium isotope record a probe for CO2 release from sedimentary rocks? Earth and Planetary Science Letters 367: 28-38. doi: 10.1016/j.epsl.2013.02.018

(21) Keech A.R., West A.J., Pett-Ridge J., and Henderson G. 2013. Evaluating U-series tools for weathering rate and duration on a soil sequence of known ages. Earth and Planetary Science Letters 374: 24-35. doi: 10.1016/j.epsl.2013.04.032

(20) Clark K.E., Hilton R.G., West A.J., Malhi Y., Grocke D.R., Bryant C.L., Ascough P.L., Robles A.C., and New M. 2013. New views on ‘old’ carbon in the Amazon River: Insight from the source of organic carbon eroded from the Peruvian Andes. Geochemistry, Geophysics, Geosystems, 14: 1644-1659. doi: 10.1002/ggge.20122

(19) Hilton R.G., Galy A., West A.J., Hovius N., and Roberts G.G. 2012. Geomorphic control on the d15N of mountain forest. Biogeosciences 10: 1693-1705. doi: 10.5194/bg-10-1693-2013

(18) West A.J. 2012. Thickness of the chemical weathering zone and implications for erosional and climatic drivers of weathering and for carbon-cycle feedbacks. Geology 40: 811-814. doi: 10.1130/G33041.1

(17) Martindale R.C., Berelson W.M., Corsetti F.A., Bottjer D.J., West A.J. 2012. Constraining carbonate chemistry at a potential ocean acidification event (the Triassic– Jurassic boundary) using the presence of corals and coral reefs in the fossil record. Palaeogeography, Palaeoclimatology, Palaeoecology 350-352: 114-123. doi: 10.1016/j.palaeo.2012.06.020

(16) West A.J. 2011. Snowballs limited by weathering. Nature Geoscience 4: 824-826.

(15) West A.J., Lin C.-W., Lin T.-C., Hilton, R.G., Liu S.-H., Chang C.-T., Lin K.C., Galy A., Sparkes R.B., and Hovius N. 2011. Mobilization and transport of coarse woody debris to the oceans triggered by an extreme tropical storm. Limnology and Oceanography 56(1): 77-85.

(14) Calmels D., Galy A., Hovius N., Bickle M., West A.J., Chen M.-C., and Chapman H. 2011. Contribution of deep groundwater to the weathering budget in a rapidly eroding mountain belt, Taiwan. Earth and Planetary Science Letters, 303: 48-58.

(13) West A.J., Jin Z.D., Zhang F. 2010. Changes in dissolved ion concentrations of the Min Jiang associated with the 2008 Wenchuan earthquake. Journal of Earth Environment 2: 90-99.


Papers published prior to arrival at USC:

(12) Georg R.B., West A.J., Basu A.R., and Halliday, A.N. 2009. Silicon fluxes and isotope composition of direct groundwater discharge into the Bay of Bengal and the effect on the global ocean silicon isotope budget, Earth and Planetary Science Letters 283: 67-74.

(11) Nissen E.T., Walker R.T., Bayasgalan A., Carter A., Fattahi M., Molor E., Schnabel C., West A.J., and Xu S. 2009. The late Quaternary slip-rate of the Har-Us-Nuur fault (Mongolian Altai) from cosmogenic 10Be and luminescence dating. Earth and Planetary Science Letters 286: 467-478.

(10) West, A.J. 2008. Mountains and monsoons. Nature Geoscience 1(12): 814-815.

(9) Knudsen M.F., Henderson G.M., MacNiocaill C., and West A.J. 2007. Seven thousand year duration for a geomagnetic excursion constrained by Th-230(xs). Geophysical Research Letters 34(22): L22302.

(8) Georg R.B., Reynolds B.C., West A.J., Burton K.W., and Halliday A.N. 2007. Silicon isotope variations accompanying basalt weathering in Iceland. Earth and Planetary Science Letters 261: 476-490.

(7) Tipper E.T., Bickle M.J., Galy A., West A.J., Pomies C., and Chapman H.J. 2006. The short term climatic sensitivity of carbonate and silicate weathering fluxes: Insight from seasonal variations in river chemistry. Geochimica et Cosmochimica Acta 70: 2737-2754.

(6) West A.J., Galy A., Bickle M.J. 2005. Tectonic and climatic controls on silicate weathering. Earth and Planetary Science Letters 235: 211-228.

(5) West A.J. 2003. Forests and national security: British and American forestry policy in the wake of World War I. Environmental History 8 (2): 270-293.

(4) West A.J., Bickle M.J., Collins R., et al. 2002. Small-catchment perspective on Himalayan weathering fluxes. Geology 30 (4): 355-358.

(3) Thornton G.J.P., Oliver L.S., West A.J. 2001. Acid sensitivity of three large Nepalese catchments: Case study of Bhote Kosi, Everest and Langtang. Water, Air and Soil Pollution 130 (1-4): 849-854.

(2) West A.J., Findlay S.E.G., Burns D.A., et al. 2001. Catchment-scale variation in the nitrate concentrations of groundwater seeps in the Catskill Mountains, New York, USA. Water, Air and Soil Pollution 132 (3-4): 389-400.

(1) Moulton K.L., West J., Berner R.A. 2000. Solute flux and mineral mass balance approaches to the quantification of plant effects on silicate weathering. American Journal of Science 300 (7): 539-570.