selected scholarly activity
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chapters
- 7.15 Deep Fluids in the Continents. 517-562. 2014
- Deep Fluids in the Continents. 517-562. 2014
- 5.17 Deep Fluids in the Continents: II. Crystalline Rocks. 541-580. 2003
- Deep Fluids in the Continents: II. Crystalline Rocks. 541-580. 2003
- Strontium Isotopes. 233-260. 2000
- In Vivo X-Ray Fluorescence of Bone Lead in The Study of Human Lead Metabolism: Serum Lead, Whole Blood Lead, Bone Lead, and Cumulative Exposure. 601-606. 1995
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conferences
- Geochemical evolution of groundwaters in the Michigan and Appalachian basins, southwestern Ontario. Geochimica et Cosmochimica Acta. A254-A254. 2006
- The energetic particles spectrometers (EPS) on MESSENGER and New Horizons. AIP Conference Proceedings. 838-841. 2003
- Strontium as a tracer of weathering processes in a silicate catchment polluted by acid atmospheric inputs, Strengbach, France. Chemical Geology. 203-219. 2000
- Spatial gradients, energy spectra, and anisotropies of ions >=30 keV at CIR shocks from 1 to 50 AU. 24TH INTERNATIONAL COSMIC RAY CONFERENCE, VOL 4. 421-424. 1995
- INVESTIGATION OF THE QUANTITATIVE ASPECTS OF MAGNESIUM (MG) ABSORPTION WITH STABLE ISOTOPE TRACERS. The FASEB Journal. A1308-A1308. 1991
- A neodymium isotope study of plutons near the Grenville Front in Ontario, Canada. Chemical Geology. 315-324. 1990
- Isotopic evidence for the crustal evolution of the Frontenac Arch in the Grenville Province of Ontario, Canada. Chemical Geology. 297-314. 1990
- RE-OS ISOTOPE RATIO DETERMINATIONS BY ICP-MS - A REVIEW OF ANALYTICAL TECHNIQUES AND GEOLOGICAL APPLICATIONS. PLASMA SOURCE MASS SPECTROMETRY. 120-144. 1990
- A proterozoic crustal terrane recognized in scotland. Chemical Geology. 68-68. 1988
- A “solid spike” method for Re-Os analysis of acid-resistant minerals enriched in platinumgroup elements (PGE). Chemical Geology. 179-179. 1988
- Archean, penokian (1.9 Ga) and Grenville (1.2 Ga) crustal extraction events recorded in the grenville province of ontario. Chemical Geology. 67-67. 1988
- IMPLICATIONS OF FORMATION WATER-MOVEMENT BASED ON ISOTOPIC DATA AND ELEMENTAL GEOCHEMISTRY, SOUTHWESTERN ONTARIO. American Association of Petroleum Geologists Bulletin. 1066-1066. 1986
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journal articles
- The geology and geophysics of Kuiper Belt object (486958) Arrokoth. Science. 367:eaay3999. 2020
- The Pluto system: Initial results from its exploration by New Horizons. Science. 350:aad1815. 2015
- A comparison of Nd model ages and U–Pb zircon ages of Grenville granitoids: constraints on the evolution of the Laurentian margin from 1.5 to 1.0 Ga. Terra Nova. 24:7-15. 2012
- The extent of juvenile crust in the Grenville Province: Nd isotope evidence. Geological Society of America Bulletin. 122:870-883. 2010
- The Central Metasedimentary Belt (Grenville Province) as a failed back-arc rift zone: Nd isotope evidence. Earth and Planetary Science Letters. 259:97-106. 2007
- Grenvillian magmatism in the northern Virginia Blue Ridge: Petrologic implications of episodic granitic magma production and the significance of postorogenic A-type charnockite. Precambrian Research. 151:224-264. 2006
- An application of Nd isotope mapping in structural geology: delineating an allochthonous Grenvillian terrane at North Bay, Ontario. Geological Magazine. 140:539-548. 2003
- Review: Noninvasive tests are useful only for symptomatic deep venous thrombosis. Evidence-Based Medicine. 3:158. 1998
- Partition of circulating lead between serum and red cells is different for internal and external sources of lead. American Journal of Industrial Medicine. 29:440-445. 1996
- Mesoarchaean crustal history of the eastern Indian Craton: Sm-Nd and U-Pb isotopic evidence. Precambrian Research. 77:17-22. 1996
- Hormone replacement therapy may reduce the return of endogenous lead from bone to the circulation.. Environmental Health Perspectives. 103:1150-1153. 1995
- Secondary K-feldspar at the Precambrian–Paleozoic unconformity, southwestern Ontario. Canadian Journal of Earth Sciences. 32:1432-1450. 1995
- Systematic decrease of high δ13C values with burial in late Archaean (2.8 Ga) diagenetic dolomite: evidence for methanogenesis from the Crixás Greenstone Belt, Brazil. Precambrian Research. 70:253-268. 1995
- Genesis of sediment-hosted Zn-Pb-Ba deposits in the Irankuh District, Esfahan area, west-central Iran. Economic Geology. 89:1262-1278. 1994
- Crustal geochemistry in the Wawa–Foleyet region, Ontario. Canadian Journal of Earth Sciences. 31:1104-1121. 1994
- Petrogenesis of Cambro-Ordovician subduction-related granitic magmas of the Québec Appalachians, Canada. Chemical Geology. 113:205-220. 1994
- Electrothermal isotope dilution inductively coupled plasma mass spectrometry method for the determination of sub-ng ml–1levels of lead in human plasma. Journal of Analytical Atomic Spectrometry. 9:1233-1236. 1994
- In Vivo X-Ray Fluorescence of Bone Lead in the Study of Human Lead Metabolism: Serum Lead, Whole Blood Lead, Bone Lead, and Cumulative Exposure. Advances in X-ray Analysis. 38:601-606. 1994
- Chlorine stable isotope distribution of Michigan Basin formation waters. Applied Geochemistry. 8:403-407. 1993
- Ground water chemistry and geochemical modeling of water-rock interactions at the Osamu Utsumi mine and the Morro do Ferro analogue study sites, Poços de Caldas, Minas Gerais, Brazil. Journal of Geochemical Exploration. 45:249-287. 1992
- Osmium isotope evidence for a crustal origin of platinum group elements in the Sudbury nickel ore, Ontario, Canada. Geochimica et Cosmochimica Acta. 56:3531-3537. 1992
- Strontium isotopic composition of Devonian dolomites, Western Canada Sedimentary Basin: significance of sources of dolomitizing fluids. Applied Geochemistry. 7:59-75. 1992
- Contrasting types of Late Archean plutonic rocks in northwestern Ontario: implications for crustal evolution in the Superior Province. Precambrian Research. 49:141-165. 1991
- Groundwater 87Sr/86Sr values in the Eye-Dashwa Lakes pluton, Canada: Evidence for plagioclase-water reaction. Chemical Geology. 86:111-122. 1991
- Nd model-age mapping of Grenville lithotectonic domains: mid- Proterozoic crustal evolution in Ontario. Geological Association of Canada Special Paper. 38:79-94. 1990
- Sr and Nd isotopic and petrological evidence for the age and origin of the White Bear Arm Complex and associated units from the Grenville Province in eastern Labrador. Geological Association of Canada Special Paper. 38:65-78. 1990
- The values of Canadian Shield brines and fracture minerals with applications to groundwater mixing, fracture history, and geochronology. Geochimica et Cosmochimica Acta. 54:205-215. 1990
- High-precision mass-spectrometric uranium-series dating of cave deposits and implications for palaeoclimate studies. Nature. 339:534-536. 1989
- Comparative RbSr and UPb zircon geochronology of late- to post-tectonic plutons in the Winnipeg River belt, northwestern Ontario, Canada — Reply. Chemical Geology. 79:96-97. 1989
- Analysis of a rhenium-osmium solid-solution spike by inductively coupled plasma mass spectrometry. Journal of Analytical Atomic Spectrometry. 4:465-465. 1989
- Nd model age mapping of the southeast margin of the Archean foreland in the Grenville province of Ontario. Geology. 17:299-299. 1989
- A 1,800-million-year-old Proterozoic gneiss terrane in Islay with implications for the crustal structure and evolution of Britain. Nature. 335:62-64. 1988
- Comparative RbSr and UPb zircon geochronology of late- to post-tectonic plutons in the Winnipeg River belt, Northwestern Ontario, Canada. Chemical Geology. 72:337-351. 1988
- Osmium isotope analysis by inductively coupled plasma mass spectrometry. Journal of Analytical Atomic Spectrometry. 3:337-337. 1988
- A strontium, oxygen and hydrogen isotopic composition of brines, Michigan and appalachian basins, Ontario and Michigan. Applied Geochemistry. 2:495-505. 1987
- 87Sr/86Sr values in groundwaters of the East Bull Lake pluton, Superior Province, Ontario, Canada. Applied Geochemistry. 2:93-101. 1987
- 87Sr/86Sr ratios as indicators of water/rock interactions: application to brines found in Precambrian age rocks from Canada.. Geological Association of Canada - Special Paper. 33:81-88. 1987
- GRANT 249. GEOCHEMICAL STUDIES OF FORMATION WATERS FROM PALEOZOIC STRATA, SOUTHWESTERN ONTARIO.. Miscellaneous Paper - Ontario Geological Survey. 147-154. 1986
- Geological significance of U-Pb and Rb-Sr ages for two pre- tectonic granites from the central metasedimentary belt, Ontario.. The Grenville Province. 209-221. 1986
- Geological significance of U-Pb and Rb-Sr ages from two pre- tectonic granites from the Central Metasedimentary Belt, Ontario ( Canada).. Geological Association of Canada - Special Paper. 31:209-221. 1986
- Rb-Sr geochronology of the Nobel gneiss and McKellar gneiss, Parry Sound region, Ontario.. Paper, Geological Survey of Canada. 85-1 A:175-180. 1985
- Strontium isotopic composition of some brines from the Precambrian Shield of Canada. Chemical Geology. 46:205-215. 1984
- Water-rock interaction and chemistry of groundwaters from the Canadian Shield. Geochimica et Cosmochimica Acta. 48:1617-1627. 1984
- Geochemical and petrological relations in some deccan basalts, Western Maharashtra, India. Journal of Volcanology and Geothermal Research. 21:165-176. 1984
- STRONTIUM ISOTOPIC COMPOSITION OF SOME BRINES FROM THE PRECAMBRIAN SHIELD OF CANADA. Isotope Geoscience. 2:205-215. 1984
- The age and nature of Mesozoic-Tertiary magmatism across the Indus Suture Zone in Kashmir and Ladakh (N. W. India and Pakistan). International Journal of Earth Sciences. 72:981-1003. 1983
- Oxygen isotopic compositions of Central Andean plutonic and volcanic rocks, latitudes 26°–29° south. Earth and Planetary Science Letters. 64:9-18. 1983
- ISOTOPIC AND GEOCHEMICAL CHARACTERIZATION OF ARCHEAN IRON FORMATIONS AND ASSOCIATED VOLCANIC ROCKS - SOME PRELIMINARY RESULTS FROM THE TEMAGAMI AND BOSTON IRON FORMATIONS.. Miscellaneous Paper - Ontario Geological Survey. 29-40. 1983
- Rb-Sr Geochronology of Granitoid Rocks from the Pampean Ranges, Argentina. Journal of Geology. 90:574-582. 1982
- Isotopic and trace element study of the Loon Lake pluton, Grenville Province, Ontario. Canadian Journal of Earth Sciences. 19:1045-1054. 1982
- Rare-earth element modelling of Archean meta-igneous and igneous rocks, Lake Despair area, northwestern Ontario. Precambrian Research. 17:275-296. 1982
- Two high precision U–Pb zircon ages for the Sudbury Nickel Irruptive. Canadian Journal of Earth Sciences. 19:723-728. 1982
- Geochronology of Wabigoon belt granitoids, northwestern Ontario: Rb/Sr isochrons for seven late-tectonic plutons. Canadian Journal of Earth Sciences. 18:157-175. 1981
- Geochemistry of Archean meta-igneous rocks, Lake Despair area, Wabigoon Subprovince, northwestern Ontario. Canadian Journal of Earth Sciences. 17:1046-1063. 1980
- Lead isotopic compositions of Andean igneous rocks, latitudes 26 degrees to 29 degrees S; petrologic and metallogenic implications. Economic Geology. 74:827-837. 1979
- Initial 87Sr/86Sr ratios of plutonic and volcanic rocks of the Central Andes between latitudes 26° and 29° south. Earth and Planetary Science Letters. 27:305-313. 1975
- Détermination de Sr dans les andésites cénozoïques et les laves associées de Sardaigne Nord occidentale (Italie). Geochimica et Cosmochimica Acta. 38:1287-1296. 1974
- The earth's age and geochronology. Geochimica et Cosmochimica Acta. 37:173-175. 1973
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presentations