W. M. KECK ISOTOPE LABORATORY

Publications

2007

Reagan, M., Tepley, F., Gill, J., Wortel, M., Garrison, J.   Timescales of degassing and crystallization implied by 210Po-210Pb-226Ra disequiibria for andesitic lavas erupted from Arenal volcano. Journal of Volcanology and Geothermal Research 157 , 135-146.

Reynolds, B.C.,   Aggarwal, J. ,André, L., Baxter, D., Beucher, C., Brzezinski, M.A., Cardinal, D., Engström, E., Georg, R.B., Land, M., Leng, M.J., Opfergelt, S., Rodushkin, I., Sloane, H.J., van den Boorn, S.H.J.M., Vroon, P.Z. An inter-laboratory   comparison of Si isotope reference materials. Journal of Analytical Atomic Spectroscopy .

Ryder, C., Gill, J., Tepley, F., Ramos, F., Reagan, M.   Closed to open system differentiation at Arenal Voicano (1968-2003). Journal of Volcanology and Geothermal Research . 157 , 75-93.

Tepley, F., Lundstrom, C., Gill, J.,   Williams, R. U-Th-Ra disequiibria and the time scale of fluid transfer and andesite  differentiation at Arenal volcano, Costa Rica (1968-2003). Journal of Volcanology and Geothermal Research .  157 , 147-165

2006

Balci, N., Bullen, T.D., Witte-Lien, K., Shanks, W.C., Motelica, M. and Mandernack, K.W., 2006, Iron isotope fractionation during microbially stimulated Fe(II) oxidation and Fe(III) precipitation: Geochemica et Cosmochimica Acta 70, 622-639.

Soto-Jimenez, M. F.; Hibdon, S. A.; Rankin, C. W.; Aggarwal, J.; Ruiz-Fernandez, A. C.; Paez-Osuna, F.; Flegal, A. R. 2006 Chronicling a Century of Lead Pollution in Mexico: Stable Lead Isotopic Composition Analyses of Dated Sediment Cores Environmental Science and Technology 40 , 764-77

Hoppe, K.A., and Koch, P.L. 2006. The isotopic biogeochemistry of the Aucilla River proboscideans. In First Floridians and Last Mastodons: The Page-Ladson Site on the Aucilla River (ed. S.D. Webb), Plenum Press, in press.

2005

Barnett-Johnson, R., Ramos, F.C., Grimes, C.B., MacFarlane, R.B. Validation of Sr isotope in otoliths by laser ablation multiple collector plasma mass spectrometry (LA_MC_ICPMS): opening avenues in fisheries science applications. Canadian Journal of Fisheries and Aquatic Science . 62 2425-2430.

Rankin C.W., Nriagu J.O., Aggarwal J.K., Arowolo T.A., Adebayo K. and Flegal,   A.R. Lead contamination in cocoa and cocoa products: isotopic evidence of global contamination.  Environmental Health Perspectives, 113 , 1344-1348

Reagan, M., Tepley, F.J., Gill,, J.B., Wortel, M. and Hartman, B.   Rapid time scales of basalt to andesite differentiation at Anatahan volcano, Mariana Islands.   Journal of Volcanology and Geothermal Research 146 , 171-183

Stock, G.M.,   Granger, D.E.,   Sasowsky, I.D.,   Anderson, R.A.,   Finkel, R.C. Comparison of U-Th, paleomagnetism, and cosmogenic burial methods for dating caves: Implications for landscape evolution studies.   Earth and Planetary Science Letters

Tollstrup, D.L., Gill, J.B. Hafnium systematics of the Mariana arc: Evidence for sediment melt and residual phases. Geology 33, 737-740.

Wade, J.A., Plank, T., Stern, R.J., Tollstrup,   D.L., Gill,   J.B.,   O'Leary,   J.C., Eiler,   J.M., Moore,   R.B., Woodhead,   J.D., Trusdell, F.,   Fischer, T.P.,   and Hilton, D.R. The May 2003 eruption of Anatahan volcano, Mariana Islands: Geochemical evolution of a silicic island-arc volcano. Journal of Volcanology and Geothermal Research 146, 139-170

2004

Cameron, K.L., Lopez, R, Ortega-Gutiérrez, F, Solari, L.A., Keppie, J.D., and Schulze, C., U-Pb geochronology and Pb isotopic compositions of leached feldspars: Constraints on the origin and evolution of Grenvillian rocks from eastern and southern Mexico. In Tollo, R.P., Corriveau, L., McLelland, J., and Bartholomew, M. J., eds., Proterozoic Tectonic Evolution of the Grenville Orogen in North America, Geological Society of America Memoir no. 197   755-771.

Darryl E. Granger, D.E., Stock, G.M. Using cave deposits as geologic tiltmeters: Application to postglacial rebound of the Sierra Nevada, California. Geophysical Research Letters , 31 , L22501

Kurkjian, R., Dunlap, C.D.,  and Flegal, A.R. Long-range downstream effects of urban runoff and acid mine drainage in the Debed River, Armenia: New insights from lead isotope systematics. Applied Geochemistry19, 1567-1580.

Hoppe, K.A. Late Pleistocene mammoth herd structure, migration patterns,and Clovis hunting strategies inferred from isotopic analyses of multiple death assemblages Paleobiology, 30, 129–145.

2003

Clementz, M.T., Holden, P., and Koch, P.L. Are Calcium Isotopes a Reliable Monitor of Trophic Level in Marine Settings? International Journal of Osteoarchaeology, 13: 29-36.

Clementz, M.T., Hoppe, K.A., and Koch, P.L. A paleoecological paradox: the habitat and dietary preferences of the extinct tethythere Desmostylus, inferred from stable isotope analysis Paleobiology, 29, 506–519

Hoppe, K.A., Koch, P.L., and Furutani, T.T. Assessing strontium isotope ratio preservation in fossil bones and tooth enamel. International Journal of Osteoarchaeology, 13, 20-28.

Kurkjian, C.R. and Flegal, A.R.  Isotopic evidence of the persistent dominance of bloodlead concentrations by previous gasoline lead emissions in Yerevan, Armenia. Environmental Research 93, 308-315.

Lundstrom, L., Hoernle, K., Gill, J. U-series disequilibria in volcanic rocls from the Canary Islands; asthenospheric versus lithospheric melting. Geochim. Cosmochim. Acta. 67, 4153-4177.

Solari, L.A., Keppie, J.D., Ortega-Gutiérrez, F., Cameron, K.L., Lopez, R., and Hames, W.E.  990 Ma and 1,100 Ma Grenvillian tectonothermal events in the northern Oaxacan Complex, southern Mexico: roots of an orogen, Tectonophysics, 365, 257-282

2002

Habicht-Mauche, J.A., Glenn, S.T., Schmidt, M.P., Franks, R., Milford, H., and Flegal, A.R. Stable Lead Isotope Analysis of Rio Grande Glaze Paints and Ores Using ICP-MS: A Comparison of Acid Dissolution and Laser Ablation Techniques. Journal of Archaeological Science 29, 1043-1053

Keppie, J.D., Dostal, J., Cameron, K.L., Solari, L.A., Ortega-Gutiérrez, F., and Lopez, R.  Geochronology and geochemistry of Grenvillian igneous suites in the northern Oaxacan Complex, southern Mexico: tectonic implications. Precambrian Research, 120, 365-389.

Kurkjian, R., Dunlap, C.E., and Flegal, A.R.  Lead isotope tracking of atmospheric response to post-industrial conditions in Yerevan, Armenia.  Atmospheric Environment 36: 1421-1429.

Vengosh,  A., Gill, J., Davisson, M.L.,  Hudson, G. B.  A multi-isotope (B, Sr, O, H, C) and age dating (3H-3He-14C) study of groundwater from Salinas Valley, California: hydrogeochemistry, dynamics, and contamination processes. Water Resource Research 38, 9-1-17

2001

Alleman, L.Y., Veron, A.J., Hamelin, B., and Flegal, A.R. Isotopic evidence of contaminant lead in the South Atlantic troposphere and surface waters.   Deep-Sea Research II 48 2811-2829.

Halfar, J.,  Godinez-Orta, L.,  Goodfriend, G.A.,  Mucciarone, D.A.,  Ingle, J.C.,  Holden, P. Holocene-late Pleistocene non-tropical carbonate sediments and tectonic history of the western rift basin margin of the southern Gulf of California. Sedimentary Geology 144 149-178.

Hochstaedter, A.G.,  Gill,  J.,  Peters, R.,  Broughton,  P., Holden, P., and Taylor, B. Across-arc geochemical trends in the Izu-Bonin arc: contributions from the subducting slab. Geophysics, Geochemistry, Geosystems  Paper No. 2000GC000105.

Keppie, J.D., Dostal, J., Ortega-Gutiérrez, F., and Lopez, R. A Grenvillian arc on the margin of Amazonia: evidence from the southern Oaxacan Complex, southern Mexico. Precambrian Research 112, 65-181.

Kurkjian, R., Dunlap, C. and Flegal, A.R. Lead isotope tracking of atmospheric response to post-industrial conditions in Yerevan, Armenia. Atmospheric Environment, 36: 1421-1429.

Lopez, R., Cameron, K.L., and Jones, N.W.  Evidence for Paleoproterozoic, Grenvillian, and Pan African Age Crust Beneath Northeastern Mexico,  Precambrian Research, 105, 195-214.

2000

Anderson, S.P., Drever, J.I., Frost, C.D.,  and Holden, P. Chemical weathering in the foreland of a retreating glacier. Geochimica et Cosmochimica Acta, 64, 1173–1189.

C.C. Lundstrom, Q. Williams and J. Gill, A geochemically consistent hypothesis for MORB generation, Chemical Geology, 162, 105-126

Dunlap, C.E., Bouse, R., and Flegal, A.R.  Past leaded gasoline emissions as a nonpoint source tracer in riparian systems: A study of river inputs to San Francisco Bay.  Environmental Science and Technology 34:1211-1215.

Scherer, E.E., Cameron, K.L. and Blichert-Toft, J  Lu-Hf garnet geochronology: closure temperature relative to the Sm-Nd system and the effects of trace mineral inclusions, Geochimica Cosmochimica Acta, 64, 3413-3432.

Steding, D.J., Dunlap, C.E., and Flegal, A.R.  New isotopic evidence for chronic lead contamination in the San Francisco Bay estuary system: Implications for the persistence of past industrial lead emissions in the biosphere.  Proceedings of the National Academy of Science 97:11181-11186.

1999

Andrews,  A., K. Coale, C. Lundstrom, Z. Palacz, J. Nowicki and G. Cailliet, Application of a new ion-exchange separation technique and thermal ionization mass spectrometry to 226Ra determination in otoliths for the purpose of radiometric age determination in long-lived fishes, Canadian Journal of Fisheries and Aquatic Sciences, 56, 1329-1338

Dunlap, C.E.,  Steinnes, E., and  Flegal, A.R.  A synthesis of lead isotopes in two millennia of European air.  Earth and Planetary Science Letters 167: 81-88.

Hoppe, K.A., Koch, P.L., Carlson, R., and Webb, S.D. Tracking mammoths and mastodons: reconstruction of migratory behavior using strontium isotopes. Geology 27: 439-442.

Lawlor, P.J., Ortega-Gutierrez, F., Cameron, K.L., Ochoa-Camarillo, H., Lopez, R.L, and Sampson, D.S  U-Pb geochronology , geochemistry and provenance of the Grenvillian Huiznopala Gneiss of Eastern Mexico, Precambrian Research, 94, 73-99.

Lundstrom, C.C.,  Sampson, D.E.,  Perfit, M.R., Gill, J., Williams, Q. Insights into MORB petrogenesis: an investigation of U-series disequilibrium in the Siqueros Transform and Lamont Seamounts.  Journal of Geophysical Research 104, 13,035-48.

1998

Cameron, K.L. and Ward, R.  Xenoliths of Grenvillian granulite basement constrain models for the origin of voluminous Tertiary rhyolites, Davis Mountains, west Texas, Geology, 26, 1087-1090.

Gwiazda, R., Woolard, D., and Smith, D.R. Utility of inductively coupled plasma - magnetic sector mass spectrometry and stable lead isotopes for evaluating the efficacy of household Pb abatement. Journal Analytical Atomic Spectroscopy, 13 1233-1238.

Lundstrom, C.C., Gill, J., Williams, Q., and Hanan, B.  Investigating solid upwelling rates beneath mid-ocean ridges using U-series disequilibria II: a local study at 33oS Mid-Atlantic Ridge. Earth and Planetary Science Letters 157, 167-182.

Lundstrom, C.C., Williams, Q., and Gill, J. Investigating solid mantle upwelling rates beneath mid-ocean ridges using U-series disequilibria:  I. a global approach, Earth and Planetary Science Letters 157, 151-165

Woolard, D.,  Franks, R.,  and Smith, D.R. An inductively coupled plasma -magnetic sector mass spectrometry method for stable lead isotope tracer studies. Journal Analytical Atomic Spectroscopy 13, 1015-1019.

1997

Lopez, R., and Cameron, K.L.  High-Mg Andesites from the Gila Bend Mountains, Southwestern Arizona: Evidence for Hydrous Melting of Lithosphere During Miocene Extension, Geological Society of America Bulletin 109, 900-914.

Scherer, E.E., Cameron, K.L., Johnson, C.M., Beard, B.L., Barovich, K.M., and Collerson, K.D.  An improved whole-rock Lu-Hf analytical method applied to dating Cenozic events affecting lower crustal xenoliths from Kilbourne Hole, New Mexico, Chemical Geology, 142, 63-78.

Widom,  E.,  Carlson, R.W., Gill, J., and Schmincke, H.-U. Th-Sr-Nd-Pb isotope and trace element evidence for the origin of the Sao Miguel enriched mantle source. Chemical Geology 140, 49-68.

1996

Cameron, K.L., Parker, D.F. and Sampson D.E.  Testing Crustal Melting Models for the Origin of Flood Rhyolites: A NdPb-Sr Isotopic Study of the Tertiary Davis Mountains Volcanic Field, West Texas,  Journal of Geophysical Research 101, 20407-20422.

Gilder,S., Gill, J., Coe, R.,  and 7 others . Constraints on the Mesozoic tectonic evolution of South China from Sm-Nd and Rb-Sr isotopic mapping of the Nanling granite field. Journal of Geophysical Research 101, 16,137-16,154.

McNulty, B.A., Tong W., and Tobisch O.T., Assembly of a dike-fed magma chamber: the Jackass Lakes pluton, central Sierra Nevada, California. Geological Society of America Bulletin 108, 926-940

Smith, D.R., Osterloh, J.D., and Flegal, A.R. The use of endogenous stable lead isotopes to determine the release of lead from the skeleton. Environmental Health Perspective 104 60-66.

Smith, R.D., Cameron, K.L., McDowell, F.W., Niemeyer, S. and Sampson, D.E.  Generation of voluminous silicic magmas and formation of mid-Cenozoic crust beneath north-central Mexico: Evidence from ignimbrites, associated lavas, deep crustal granulites, and mantle pyroxenites. Contributions to Mineralogy and Petrology 123, 375-389.

Tong W.X., and Tobisch, O.T., Deformation of granitoid plutons in the Dongshan area, southeast China: constraints on the physical conditions and timing of movement along part of the Changle-Nanao shear zone. Tectonophysics 267 303-316

1995

Lundstrom, C., Gill, J., Williams, Q. Perfit, M.P. Mantle melting and basalt extraction by equilibrium porous flow. Science 270, 1958-62.

Nimz, G.J., Cameron, K.L. and  Niemeyer, S.  Formation of mantle lithosphere beneath northern Mexico: Chemical and Sr-Nd-Pb isotopic systematics of peridotite xenoliths from La Olivina: Journal of Geophysical Research 100, 4181-4196.

Tobisch, O.T., and Cruden, A.R., Fracture-controlled magma conduits in an obliquely convergent continental magmatic arc. Geology, 23, 941-944.

1994

Gill, J., Hiscott, R., Vidal, Ph. Turbidite geochemistry and the evolution of island arcs and of continents. Lithos 33, 135-168.

Smith, D., Markowitz, M., Crick, J., Rosen, J., and Flegal, A.R. The effects of succimer on the absorption of lead in adults determined by using the stable isotope 204Pb. Environmental Research 67 39-57.

Tardy, M., Lapierre, H., Freydier, C., Coulon, C., Gill J.B.,  Delepinay, B.M., Beck, C.,  Martinez, J.,  Talavera, O., Ortiz, E.,  Stein, G., Bourdier, J.L., Yta, M. The Guerrero Suspect Terrane (Western Mexico) and Coeval Arc Terranes (The Greater-Antilles and the Western-Cordillera-of-Colombia) - a Late Mesozoic Intraoceanic Arc Accreted to Cratonal America During the Cretaceous Tectonophysics 230 49-73

Tobisch, O.T., Collerson, K.D., Bhattacharyya, T.,  Mukhopadhyay, D. Structural Relationships And Sr-Nd Isotope Systematics of Polymetamorphic Granitic Gneisses and Granitic-Rocks from Central Rajasthan, India - Implications for the Evolution of the Aravalli Craton. Precambrian Research 65  319-339

1993

Flegal, A.R., Garrison, D.L., and Niemeyer, S. Lead isotopic disequilibria between plankton  assemblages and surface waters reflect life cycle strategies of  coastal populations  within  a  northeast  Pacific  upwelling  regime.  Limnology and Oceanography 38: 670-678.

Flegal, A.R., Maring, H., and Niemeyer, S. Anthropogenic lead in Antarctic  sea water.  Nature 365: 242-244.

Gill, J.B., Morris, J.B., Johnson, R.W. Timescale for Producing the Geochemical Signature of island-Arc Magmas - U-Th-Po and Be-B Systematics in Recent Papua-New-Guinea Lavas. Geochimica Et Cosmochimica Acta 57 4269-4283

Goldstein, S.J.,  Murrell, M.T.,  Williams, R.W. Pa-231 and Th-230 Chronology of Midocean Ridge Basalts  Earth and Planetary Science Letters 115 151-159

Nimz, G.J., Cameron, K.L., and Niemeyer, S. The La Olivina pyroxenite suite and the isotopic compositions of mantle basalts parental to the mid-Cenozoic arc volcanism of northern Mexico: Journal of Geophysical Research 98, 6489-6509.

Veron, A.,  T.M. Church, C.C. Patterson, Y. Erel and A.R. Flegal.  Response  of  lead cycling  in  the  surface Sargasso Sea to changes in the tropospheric  input.   Journal of Geophysical Research 98: 18,269-18,276.

1992

Cameron, K.L., Robinson, J.V., Niemeyer, S., Nimz, G.J., Kuentz D.C., Harmon R.S., Bohlen S.R., and Collerson K.D.  Contrasting styles of pre-Cenozoic and mid-Tertiary crustal evolution in northern Mexico: evidence from deep crustal xenoliths from La Olivina, Journal  of Geophysical Research 97, 17,353-17,376.

Flegal, A.R. and Smith, D.R., Lead levels in preindustrial humans.  The New England Journal of Medicine 326: 1293-1294.

Gill, J.B., Seales, C., Thompson, P.,  Hochstaedter A., and Dunlap, C. Petrology and geochemistry of Plio-Pleistocene volcanic rocks from the Izu Arc and Sumisu Rift, Leg 126.  In B. Taylor and K Fujioka, et al., Proc. ODP, Sci. Results, 126: College Station, TX (Ocean Drilling Program), p. 383-404.

Gill,  J.B., Condomines, M. Short-Lived Radioactivity and Magma Genesis Science 257 1368-1376

Macdonald, R., Upton, B.G.J.,  Collerson, K.D., Hearn, B.C., James, D. Potassic Mafic Lavas of the Bearpaw Mountains, Montana - Mineralogy, Chemistry, and Origin Journal Of Petrology 33 305-346.

Smith, D.R. and Flegal, A.R.,   Stable isotopic tracers of  lead  mobilized  by  DMSA  chelation in low lead exposed rats.  Toxicology and Applied Pharmacology 116: 85-91.

Williams, R., Collerson, K., Gill, J. and Deniel, C. High Th/U ratio in subcontinental lithospheric mantle: mass spectrometric measurement of Th isotopes in Gaussberg lamproites. Earth and Planetary Science Letters. 111, 257-268. 

Williams, R.W., Gill, J.B. Th isotope and U-Series Disequilibria in some Alkali Basalts  Geophysical Research Letters 19 139-142

1991

Collerson, K.D., Campbell, L.M., Weaver, B.L., Palacz, Z.A. Evidence for Extreme Mantle Fractionation in Early Archean Ultramafic Rocks from Northern Labrador. Nature 349  209-214

Nutman, A.P, Collerson, K.D. Very Early Archean Crustal-Accretion Complexes Preserved in the North-Atlantic Craton. Geology 19 791-794

Vallier, T.L., Jenner, G.A., Frey, F.A, Gill, J.B., Davis, A.S., Volpe, A.M., Hawkins, J.W., Morris, J.D., Cawood, P.A., Morton, J.L., Scholl, D.W., Rautenschlein, M., White, W.M., Williams, R.W., Stevenson, A..J., White, L.D. Subalkaline Andesite from Valu Fa Ridge, a Back-Arc Spreading Center in Southern Lau Basin - Petrogenesis, Comparative Chemistry, and Tectonic Implications.  Chemical Geology 91 227-256

1990

Bickford, M.E., Collerson, K.D., Lewry, J.F., Vanschmus, W.R., Chiarenzelli, J.R. Proterozoic Collisional Tectonism In The Trans-Hudson Orogen, Saskatchewan Geology 18 14-18

Gill, J.B., Torssander, P., Lapierre, H., Taylor, R., Kaiho, K., Koyama, M., Kusakabe, M., Aitchison, J., Cisowski, S., Dadey, K., Fujioka, K., Klaus, A., Lovell, M., Marsaglia, K., Pezard, P., Taylor, B., Tazaki, K.  Explosive Deep-Water Basalt in the Sumisu Backarc Rift  Science 248 1214-1217

Hochstaedter, A.G., Gill, J.B., Kusakabe, M., Newman, S., Pringle, M., Taylor, B., Fryer, P.  Volcanism in the Sumisu Rift .1. Major Element, Volatile, and Stable Isotope Geochemistry Earth and Planetary Science Letters 100 179-194

Taylor, B., Brown, G., Fryer, P., Gill, J.B., Hochstaedter, A.G., Hotta, H., Langmuir. C.H., Leinen, M., Nishimura, A., Urabe, T.. Alvin-Seabeam Studies of the Sumisu Rift, Izu-Bonin Arc Earth and Planetary Science Letters 100 127-133

1989

Delaney, M. L., Williams,  R. W., Low,  C. Radiochemical Analyses of Pb-210 in a Massive Coral (Pavona-Clavus) from the Galapagos Geochimica et Cosmochimica Acta 53  1633-1636

Gill, J.B., Whelan, P. Early Rifting of an Oceanic Island-Arc (Fiji) Produced Shoshonitic to Tholeiitic Basalts  Journal of Geophysical Research-Solid Earth and Planets 94 44561-4578

Williams, R.W., Gill, J.B. Effects of Partial Melting on the Uranium Decay Series  Geochimica et Cosmochimica Acta 53 1607-1619

1988

Collerson, K.D., Williams, R.W., Gill, J.B. Leucitites with Large Initial Th-230 Enrichment - Gaussberg Volcano, Antarctica  Chemical Geology 70 125-12

1987

Mukasa, S.B., Mccabe, R., Gill, J.B. Pb-Isotopic Compositions of Volcanic-Rocks in the West and East Philippine Island Arcs - Presence of the Dupal Isotopic Anomaly Earth and Planetary Science Letters 84 153-164

1986

Goldstein, S.J., Murrell, M.T., Williams, R.W. Half-Life of Th-229 Physical Review C 40  2793-2795

Williams,  R.W., Gill,  J,B., Bruland,  K.W. Ra-Th Disequilibria Systematics - Timescale of Carbonatite Magma Formation at Oldoinyo-Lengai Volcano, Tanzania Geochimica et Cosmochimica Acta 50 1249-1259

1985

Gill, J.B., Williams, R., Bruland, K. Eruption of Basalt and Andesite Lava Degasses Rn-222 and Po-210  Geophysical Research Letters 12 17-20