peer-reviewed publications

(Student Authors Underlined)

Recła, J., Sierpień, P., Karasiński. J., Kamenov, G., Powell, W., Marciniak-Maliszewska, B., and Kałaska, M., In Press. The Origin of Lead Artifacts from Novae – Applications of Pb Isotopes in Identifying the Provenance of Roman Artifacts from N Bulgaria. Heritage Science

Powell, W., Mathur, M., Pulak, C., Barjamovic, G., Blečić-Kavur, M., Kavur, B., Hristova, T., and John, J., In Review. Reassessment of the Origin of Late Bronze Age Tin Ingots Accounting for Natural and Anthropogenic Mixing of Metals. Journal of Archaeological Science

Powell, W., Barjamovic, G., and Pulak, C., In Review. An Asian Origin for the Oxhide Form for Ingots. Journal of Archaeological Science: Reports

Mathur, R., Powell, W., Yao, J., Guimares, F., Chen, Y., Godfrey, L., Tornos, F., Killick, D., Stevens, J., Mao, J., Migguang, S., and Lehmann, B., In Review. Identification of Magmatic and Hydrothermal Processes with Sn Isotope Compositions of Global Cassiterites. Geological Society of America Bulletin.

Powell, W, Yener, K.A., Barjamovic, G., Kulakoğlu, F., Yazgan, E., and Mathur, M., 2024, Tin Isotopes Reveal Changing Patterns of Tin Trade, Connectivity and Consumption from Anatolia and Central Asia at Kültepe. Journal of Archaeological Science, 162, 105197.

Mathur, R., Powell, W., Miśta-Jakubowska, E., Duczko, W., Czech-Błońska, R., Błoński, M., Janowski, A., Żołędziowski, K., Jagodziński, M., Gójska, A., Kamenov, G., 2024. Isotopic Metal Compositions of Early Historic Polish Viking Artifacts Reveal Expansive Trade Network. Journal of Archaeological Science: Reports, 53, 104296.

Wu, J., Mathur, M., Bouvier, A., Powell, W., Yonezu, K., and Zhu, D., 2023. Compositional variation and Sn isotope fractionation of cassiterite during magmatic-hydrothermal processes. Earth and Planetary Science Letters, 613, 118186.

Powell, W., Frachetti, M., Pulak, C., Johnson, M., Bankoff, H.A., Barjamovic, G., Mathur, R., Pigott, V., Price, M., and Yener, K.A, 2022. Tin from Uluburun Shipwreck Shows Small-Scale Commodity Markets Fueled Continental Tin Supply across Late Bronze Age Eurasia. Science Advances, 8, eabq3766. 

Meehan, K., Powell, W., McKirdy, D., Hall, P.A., Nedin, C., Johnston, P., and Collom, C., 2022. Aluminum-normalised trace element paleoredox proxies and their application to the study of the conditions of Burgess Shale-type preservation. Australian Journal of Earth Science, DOI: 10.1080/08120099.2023.2137737.

Pacifico, L., Powell, W., Bankoff, H.A., Filipović, V, and Bulatović, A., 2022. Iron Age and Roman Metallurgical Activities at the Spasovine Placer Tin Deposit, West Serbia. Journal of Archaeological Science: Reports, 45, 103619.

Powell, W., Johnson, M., Pulak, C., Yener, K.A., Mathur, R., Bankoff, H.A., Godfrey, L., Price, M., and Galili, E., 2021, From Peaks to Ports: Insights into Tin Provenance, Production, and Distribution from Adapted Applications of Lead Isotopic Analysis of the Uluburun Tin Ingots. Journal of Archaeological Science, v. 134, 105455.

Powell, W., Yazgan, E., Johnson, M., Yener, K.A., and Mathur, M., 2021, Mineralogical Analysis of the Kestel Mine: An Early Bronze Age Source of Tin Ore in the Taurus Mountains, Turkey. Minerals, v. 11, 91 

Powell, W., Mladenović, O., Cruse, S., Bankoff, H.A., and Mathur, R., 2020, Revisiting “Tin is southwest Europe?”. Starinar, v. 70, p. 85-94.

Powell, W., Pacifico, L., Mitchell, T., Cruse, S., and Bankoff, H.A., 2020, Provenance of Raw Materials for Prehistoric Pottery Production at the Spasovine Tin Placer Site (West Serbia). Starinar, v. 40, p. 41-50.

Bulatović, A., Bankoff, H.A., Powell, W., and Filipović, V., 2020. Some remarks on the genesis of the Early Eneolithic in the Central Balkans. Starinar, v. 70, p. 9-40. 

Mason, A., Powell, W., Bankoff, H.A., Mathur, R., Price, M., Bulatović, A., and  Filipović, V., 2020. Provenance of Tin in the Late Bronze Age Balkans Based on Probabilistic and Spatial Analysis of Sn Isotopes. Journal of Archaeological Science.

Mathur, R., Burns, J., Powell, W., Boryk, R., Sheetz, B., Amico, P., and Harney, P, 2020. An Evaluation of Fe isotope Values as a Provenance Tool for Chert Artifacts from Northeastern USA. Archaeometry, v. 62, p. 156-168.

Matt, P., Powell, W., Mathur, R., and DeLorraine, W., 2020, Zn-Isotopic Evidence for Fluid-Assisted Ore Remobilization at the Balmat Zinc Mine, NY. Ore Geology Reviews, v. 116, 103227.

Blečić-Kavur, M., Powell, W., Jašarević, A., 2019, The Cvrtkovci hoard in the context of the potential of the Late Bronze Age hoards from Bosnia. Godišnjak / Jahrbuch v. 48, p. 103-124.

Powell, W., Mathur, R., John, J., Price, M., Bankoff, H.A., Tisucká, M., and Godfrey, L., 2019, Unearthing Europe’s Bronze Age Mining Heritage with Tin Isotopes: A Case Study from Central Europe. European Geologist, v. 48, p. 58-62.

Matt, P., Powell, W., Chirianzelli, J., and DeLorraine, W., 2019, Sulfide and Silicate Anatexis in the Balmat Zinc Deposit (New York, USA) and its Implications for Ore Remobilization. Ore Geology Reviews, v. 107, p. 392-401.

Wang, D., Mathur, M., Powell, W., Godfrey, L., and Zheng, Y., 2019, Experimental Evidence for Fractionation of Tin Chlorides by Redox and Vapor Mechanisms. Geochimica et Cosmochimica Acta, v. 250, p. 209-218.

Yao, J., Mathur, R., Powell, W., Lehmann, B., Tornos, F., Wilson, M., and Ruiz, J., 2018, Sn-Isotope Fractionation as a Record of Hydrothermal Redox Reactions. American Mineralogist, v. 103, p. 1591–1598.

Powell, W., Bankoff, A.H., Mason, A., Mathur, R., Bulatović, A., Filipović, V., 2018, Tin Sources and Regional Trade in the Bronze Age of Southeast Europe: Evidence from Tin Isotopes, In Popov, H. and Aleksandrov, S (eds.) Gold and Bronze. Metals, Technologies and Networks in the Eastern Balkans during the Bronze Age. National Archaeological Institute, Bulgarian Academy of Sciences.

Powell, W., Mathur, R., Bankoff, A.H., John, J., Chvojka, O., Tisucká, M., Bulatović, A., and Filipović, V., 2018, Copper Isotopes as a Means of Determining Regional Metallurgical Practices in European Prehistory: A Reply to Jansen. Journal of Archaeological Science, v. 89, p. 216-221.

Mathur, R., Falck, H., Milton, J., Belogub, E., Wilson, M., Rose, A. and Powell, W., 2018, Origins of chalcocite defined by copper isotope values. Geofluids, v. 2018, p. 1-9.

Mathur, R., Powell, W., Mason, A., Godfrey, L., Yao, J., and Baker, M., 2017, Preparation and Measurement of Cassiterite for Sn Isotope Analysis. Geostandards and Geoanalytical Research, v. 41, pp. 701-707

Powell, W., Mathur, R., Bankoff, H.A., Mason, A., Bulatović, A., Filipović, V., and Godfrey, L., 2017, Digging Deeper: Insights into Metallurgical Transitions in European Prehistory through Copper Isotopes. Journal of Archaeological Science., v. 88, pp. 37-46.

Matt, P., Powell, W., Volkert, R., Gorring, M., and Johnson, A., 2017, Sedimentary Exhalative Origin for Magnetite Deposits of the New Jersey Highlands. Canadian Journal of Earth Science, v. 54, p. 1008-1023.

Adams, J. D., Miele, E., and Powell, W., 2016, City-as-Lab Approach for Urban STEM Teacher Learning and Teaching. In: Intersections of Formal and Informal Science  L. Avraamidow & W.-M. Roth (eds.).  Routledge.  New York, pp. 189-200.

Mason, A., Powell, W., Mathur, R., Bankoff, H.A., Bulatović, A., Filipović, V., and Ruiz, J., 2016, Tin Isotope Characterization of Bronze Artifacts of the Central Balkans. Journal of Archaeological Science, v. 69, p. 110-117.

Huska, A., Powell, W., Bankoff, H.A., Bulatović, A., Filipović, V., Boger. R., & Mitrović, S, 2014, Bronze Age Exploitation of Mt. Cer Placer Tin Ores in West Serbia. Geoarchaeology, v. 29, p. 477-493.

Boger, R., Adams, J., and Powell W., 2014, Place-based Geosciences Courses in a Diverse Urban College: Lessons Learned. Journal of Geoscience Education, v. 62, p. 19-24.

Handle, K., and Powell, W., 2012, Morphologically Simple Enigmatic Fossils from the Wheeler Formation: A Comparison with Definitive Algal Fossils. Palaios, v. 27, p. 304-316.

Powell, W., 2011, City-as-Lab: Place Based Education at the Heart of an Urban Geoscience Curriculum. In the Trenches, v. 1, p. 5-6.

Miele, E., Hainline. L., Lesser, P., Powell, W., Tisch, S., and Tomkiewicz, M., 2011, Early Exploration of Opportunities in Science and Careers Encourages Students to Pursue Science Majors. Journal of College Science Teaching, v. 40, p. 14-19.

Bankoff, A.H., Mitrović, S., Arsić, R., Boger, R., Filipović, V., Huska, A., and Powell, W., 2011, Tin Sources and Settlement in the Bronze Age of Southeastern Europe: A Pilot Study From Western Serbia. Antiquity Project Gallery, http://antiquity.ac.uk/projgall/bankoff327/

Miele, E., and Powell, W., 2010, Science and the City: Community Cultural and Natural Resources at the Core of a Place-Based Science Teacher Preparation Program. Journal of College Science Teaching, v. 40, p. 18-22.

Powell, W., 2009, Comparison of Geochemical and Distinctive Mineralogical Features Associated with the Kinzers and Burgess Shale Formations and their Associated Units. Palaeoclimatology, Palaeoecology & Palaeogeography, v. 277, p. 127-140

Collom, C.J., Johnston, P.A., and Powell, W., 2009, Reinterpretation of ‘Middle’ Cambrian stratigraphy of the rifted western Laurentian margin: Burgess Shale Formation and contiguous units (Sauk II Megasequence); Rocky Mountains, Canada. Palaeoclimatology, Palaeoecology & Palaeogeography, v. 277, p. 63-85

Johnston, K.J., Johnston, P.A, and Powell, W., 2009, A New  Middle Cambrian, Burgess Shale-type biota, Bolaspidella Zone, Chancellor Basin, southeastern British Columbia. Palaeoclimatology, Palaeoecology & Palaeogeography, v. 277, p. 106-126.

Johnston, P.A., Johnston, K.J., Collom, C.J., Powell, W., and Pollock, R.J., 2009, Paleontology and depositional environments at ancient brine seeps in the Middle Cambrian Burgess Shale at The Monarch, British Columbia, Canada. Palaeoclimatology, Palaeoecology & Palaeogeography, v. 277, p. 86-105

Powell, W., 2009, Teaching Urban Students. Pedagogy in Action:The SERC Portal for Educators. http://serc.carleton.edu/sp/library/urban/index.html

Macdonald, M., Sloan, H., Miele, E., Powell, W., Silvernail, D., Kinzler, R., Hong, J., and Simon, C., 2008, Improving Urban Earth Science Education: The TRUST Model. Journal of Geoscience Education, v. 56, p. 269-279.

Powell, W., Johnston, P.A,., Collom, C.J., and Johnston, K.J., 2006, Middle Cambrian Brine Seeps on the Kicking Horse Rim and their Relationship to Talc and Magnesite Mineralization, and Associated Dolomitization, British Columbia, Canada. Economic Geology, v.101, p. 431-451.

Dhingra, K., Miele, E., Macdonald, M., and Powell, W., 2006, Museum, College and School: Collaboration in Science Teacher Preparation and Support. In: Change Agents in Science Education (K. Dhingra and S. Hagiwara, Eds.), Sense Publishers, p. 97-119.

Powell, W., and Leveson, D.J., 2004, The unique role of introductory earth science courses in teaching quantitative reasoning. Journal of Geoscience Education., v. 52, 301-305.

Powell, W., Johnston, P., and Collom, C., 2003, Geochemical evidence for oxygenated bottom waters during deposition of fossiliferous strata of the Burgess Shale Formation. Palaeoclimatology, Palaeoecology & Palaeogeography, v.201, p.249-268.

Powell, W., 2003, Greenschist-facies metamorphism of the Burgess Shale and its implications for models of fossil formation and preservation, Canadian Journal of Earth Sciences, v. 40, p. 13-25

Powell, W., 2003, Essential elements for successful online courses. Journal of Geoscience Education, v. 51, p. 221-230.

Powell, W., 2000, Using Web-Based Bulletin-Boards to Increase Discussion, Journal of Geological Education, v. 48, p. 602.

Powell, W., Pattison, D.R.M., and Johnston, P.  1999, Metamorphic History of the Hemlo Gold Deposit from Al2SiO5 Mineral Assemblages with Implications for the Timing of Mineralization. Canadian Journal of Earth Sciences, v. 36, p. 33-46.

Powell, W., and Pattison, D.R.M. 1997, An exsolution origin for "low-temperature" sulphides at the Hemlo gold deposit, Ontario, Canada.  Economic Geology, v. 92, p. 569-577.

Powell, W., and Ghent, E.D., 1996, Low-pressure metamorphism of mafic volcanic rocks of the Rossland Group, southeastern British Columbia. Canadian Journal of Earth Sciences, v. 33, p. 1402-1409.

Powell, W., Carmichael, D.M., and Hodgson, C.J., 1995, Conditions and timing of metamorphism in the southern Abitibi greenstone belt, Quebec.  Canadian Journal of Earth Sciences, v. 32, p. 787-805

Powell, W., Hodgson, C.J., Hanes, J.A., Carmichael, D.M., McBride, S., and Farrar, E., 1995, 40Ar/39Ar geochronological evidence for multiple post-metamorphic hydrothermal events focussed along faults in the southern Abitibi greenstone belt.  Canadian Journal of Earth Sciences, v. 32, p. 768-786

Powell, W., 1994, Metamorphism of the Larder Lake-Boston Creek area, District of Timiskaming, Ontario. Ontario Geological Survey, Open File Report 5885, 29p..

Powell, W., Carmichael, D.M., and Hodgson, C.J., 1993, Thermobarometry in a subgreenschist to greenschist transition in metabasites of the Abitibi greenstone belt, Superior Province, Canada. Journal of Metamorphic Geology, v. 11, p. 165-178.

Powell, W., and Hodgson, C.J., 1992, Deformation of the Gowganda Formation, Matachewan area, Ontario by post-Early Proterozoic reactivation of the Larder Lake-Cadillac break, with implications for gold exploration. Canadian Journal of Earth Sciences, v. 29, p. 1580-1589.

Powell, W., 1991, The distribution, structural history and relationship to regional metamorphism of high-strain zones forming the Larder Lake-Cadillac deformation zone, Matachewan area, Abitibi belt.  Ontario Geological Survey, Open File Report 5789, 150p..

Powell, W., Kilbourne, M.W., and Hodgson, C.J., 1991, Gold-related geology of the Matachewan area. In The Society of Economic Geologists Guidebook Series, v.11, Series Ed. Thompson, T.B., p. 64-88.

conference presentations

(Student Authors Underlined)

Stephens, J., Killick, D., Powell, W., and Mathur, R., 2023, The ‘Bronze Age’ of southern Africa. Society of American Archaeology, Portland, OR.

Yarrow, L., and Powell, W., 2023, The Fabric of Rome’s Heavy Bronze – An Interim Report. Money in Mid Republic Rome, Rome, Italy.

Powell, W., Yener, K.A., Mathur, R., Johnson, M., and Kulakoglu, F., 2022, Sn Isotopes Identify Two Synchronous Tin Production Systems in Bronze Age Anatolia. American Society for Overseas Research (ASOR) Annual Meeting, Boston, MA. (Invited Speaker)

Powell, W., Johnson, M., Yener, K.A., and Mathur, R., 2022, The Sources of Tin for Kültepe/Kanesh and Tell Atchana/Alalakh: Two Synchronous Production Systems. Kültepe International Meeting, Kayseri, Turkey. (Invited Speaker)

Powell, W., Johnson, M., and Yener, K.A., 2022, The Sources of Tin for Kültepe/Kanesh and Tell Atchana/Alalakh: Two Production Systems. Kültepe Workshop, Koç University, Istanbul, Turkey. (Invited Speaker)

Pacifico, L., and Powell, W., 2021, Prehistoric Tin Mining: Determining the Duration of Tin Alloy Production Via Analysis of Metallurgical Crucible Fragments from West Serbia. Geological Society of America Annual Meeting, Portland, OR.

Powell, W., Mathur, R., Bankoff, H.A., Kavur, B., and Blečić-Kavur, M., 2021, Preliminary Results of Tin Isotope Analysis of LBA-EIA Artifacts from Slovenia. Od Morja do Morja, Koper-Ptuj, Slovenia.

Pacifico, L., and Powell, W., 2020, Prehistoric Tin Mining at Mt. Cer: Determining the Duration of Tin Production Via Analysis of Metallurgical Crucible Fragments from West Serbia. Geological Society of America Annual Meeting, Montreal, QC.

Pacifico, L., Powell, W., Cruse, S., Bulatović, A., and Filipović, V., 2019, Mining Camp or Mining Village Mineralogical Correlation of Late Bronze Age Pottery Temper and Adjacent Tin Placer Sands, West Serbia. Geological Society of America Annual Meeting, Phoenix AZ.

Powell, W., Bankoff, H.A., Mason, A., Mathur, M., Bulatović, A., and Filipović, V., 2019, Sn Isotopic Evidence for Late Bronze Age Exploitation of Multiple Tin Sources across the Central Balkan Region. Bronze Age Metallurgy: production – consumption – exchange. OREA - Austrian Academy of Sciences, Vienna, Austria (Invited Speaker)

Mathur, R., and Powell, W., 2018, Implications of Sn Isotopic Fractionation in Ores and Rocks Associated with Sn Mineral Deposits. International Association on the Genesis of Ore Deposits, Salta, Argentina.

Powell, W., Mathur, R., and Yao, J., 2018, Sn-Isotope Fractionation as a Record of Hydrothermal Redox Reactions. Goldschmidt, Boston MA.

Matt, P., Powell, W., and Mathur, R., 2018, Zn Isotopes as a Tracer of Magma-Assisted Ore Mobilization at the Balmat, NY Sedex Zinc Deposit. Goldschmidt, Boston MA.

Powell, W., Mason, A., Bankoff, H.A., Mathur, R., Bulatović, A., and Filipović, V., 2018, Sn Isotopic Evidence for Late Bronze Age Exploitation and Trade of Multiple Tin Sources in the Central Balkan Region. International Workshop on Bronze Age Tin – Geological sources, production, and distribution of tin in Bronze Age Eurasia, Mannheim, Germany. (Invited Speaker)

Powell, W., Yao, J., Wilson, M., and Mathur, R., 2017, Sn-Isotopic Evidence of Vapor Transport of Tin in Shallow-Level Mineralization Systems within the Gejiu Polymetallic Ore Field. Society of Economic Geologists, Ore Deposits of Asia, Beijing, China.

Powell, W., Mathur, R., Bankoff, H.A., Bulatović, A., and Filipović, V., 2017, Determining Prehistoric Mining Practices in Southeastern Europe Using Copper Isotopes. European Geological Union General Assembly, Vienna, Austria.

Cruse, S., Powell, W., Huska, A., Bankoff, H.A., Filipović, V., 2017, Geochemical Prospecting at Mt. Prosara and Motajica, Northern Bosnia: Examining Potential Sites of Bronze Age Placer Tin Ore Mining. Geological Society of America Annual Meeting, Seattle WA.

Huska, A., Powell, W., Mathur, R., Bankoff, H.A., Filipović, V., and Bulatović, A., 2015, Isotopically Provenancing Tin in Bronze Artifacts, Central Balkans. Geological Society of America Annual Meeting, Baltimore MD.

Matt, P., Powell, W., Mathur, R., and DeLorraine, W., 2015, Zinc Isotopic Character of Ore Bodies at Balmat, NY: Preliminary Results. Geological Society of America Annual Meeting, Baltimore MD.

Miele, E., Powell, W., and Adams, J.D., 2015, Teacher-Scientist Partnerships Catalyze Change in the Academy. International Teacher-Scientist Partnership Conference, San Francisco. 

Powell, W., Huska, A., Bankoff, H.A., Filipović, V., and Bulatović, A., 2014, Ancient Tin Smelting at Mt. Cer, Serbia: Chemical and Mineralogical Evidence from Crucible Sherds. Geological Society of America Annual Meeting, Vancouver BC.

Powell, W., Miele, E., and Adams, J., 2014, Design and Evaluation of Research Experiences in a Master of Arts of Teaching Earth Science Program. Geological Society of America Annual Meeting, Vancouver BC.

Johnson, A., Powell, W., and Matt, P., 2014, Genesis of Non-Strataform Magnetite OresNear Ringwood, New Jersey Highlands. NE Geological Society of America Annual Meeting, Lancaster, PA.

Powell, W. and Handle, K., 2013, Comparison of Trace-element-based Paleo-redox and Paleo-productivity Indicators in Burgess Shale-type Fossil Sites. Geological Society of America Annual Meeting, Denver CO.

Huska, A., Powell, W. and Bankoff, H.A., 2013, Bronze Age Exploitation of Mt. Cer Placer Cassiterite Ores, West Serbia." Geological Society of America Annual Meeting, Denver CO.

Matt, P., and Powell, W., 2013, Magnetite Orebodies in the New Jersey and Hudson (New York) Highlands: Metamorphosed Banded Iron Formations." Geological Society of America Annual Meeting, Denver CO.

Adams, J., Powell, W., Miele, E., 2013, Teacher-researcher-scientist: Teacher experiences in a geoscience RET. International Teacher-Scientist Partnership Meeting, Boston MA

Powell, W., and Handle, K., 2012, Geochemical Proxies as an Effective Tool for Determining Depositional Environments for Burgess Shale-Type Fossil Localities. European Geological Union General Assembly, Vienna, Austria.

Difrancesco, N.J., and Powell, W., 2012, Geochemical Variability of Marbles Underlying the Sterling Hill Mine: Constraints on their Origins. NE Geological Society of America Annual Meeting, Hartford CT

Matt, P., and Powell, W., 2012, Geologic Setting of Magnetite Deposits in the NJ Highlands and NY Hudson Highlands. NE Geological Society of America Annual Meeting, Hartford CT

Huska, A., Powell, W., Bankoff, A.H., Mitrović, S., Boger, R., and Butatović, A., 2011, Tin-Bearing Stream Sediments Spatially Associated with Bronze Age Settlements in Western Serbia. Geological Society of America Annual Meeting, Minneapolis MN

Huska, A., Powell, W., Bankoff, A.H., and Boger, R., 2011, Tin Sources Associated With Bronze Age Archeological Sites in Western Serbia. NE Geological Society of America Annual Meeting, Pittsburgh PA

Powell, W., Boger, R., and Adams, J., 2010, City-as-Lab: Community-Based Geoscience Education in an Urban Setting. 6th Quadrennial Conference of the International Geoscience Educators Organization, Johannesburg, South Africa

Difrancesco, N.J., and Powell, W., 2010, A High Resolution Geologic Map of the Sterling Hill Mine. GSA Annual Meeting 2010, Denver CO

Handle, K., and Powell, W., 2010, Geochemical Evidence for Shifting Redox Conditions within Fossiliferous Strata of the Wheeler Formation, Utah. Geological Society of America Annual Meeting 2010, Denver CO

Powell, W., and Boger, R., 2010, Air Quality as the Focus of a Community-Based Freshman Research Experience in Geoscience. NE Geological Society of America Annual Meeting 2010, Baltimore MD

Cheng, Z., Powell, W., and Miele, E., 2010, Science and the City: A Water Course for Science Teachers in New York City. NE Geological Society of America Annual Meeting 2010, Baltimore MD

Matt, P., and Powell, W., 2010, Geochemistry of Paragneisses Associated with Magnetite Mines in the New Jersey and Hudson (NY) Highlands. NE Geological Society of America Annual Meeting 2010, Baltimore MD

Powell, W., Boger, R., Branco, B., and Yarrow, L.M., 2009, Place-Based Initiatives for Urban Students of Introductory Geoscience Courses in Brooklyn. Geological Society of America Annual Meeting 2009, Portland OR

Powell, W., and Papaneocleous, A., 2009, Comparison of Matrix, Fossil, and Vein Mineral Assemblages in the Burgess Shale, British Columbia, Canada. Geological Society of America Annual Meeting 2009, Portland OR

Miele, E., Powell, W. and Adams, J., 2009, Professional Development of Instructors through Professor-Teacher-Based Team Teaching in Earth-Science Teacher Preparation Courses. Geological Society of America Annual Meeting 2009, Portland OR

Powell, W., and Yarrow, L.M., 2009, Cross-Disciplinary Experiential Learning: Practical Examples from a Commuter Campus. 22nd International Conference on the First-Year Experience, Montreal QC

Powell, W., 2009, Using Authentic Air-Quality Data to Tie Geoscience Students to their Community and Curriculum. Unidata Users Workshop 2009, “Using Operational and Experimental Observations in Geoscience Education”, Boulder CO. Keynote Address

Miele, E., Powell, W., Kinzler, R., Parker, P., Welch, J., Bomba, M., and Levin, T., 2009, City-as-Lab: Community Scientific and Cultural Institutions Partnered with Higher Education for Science Teacher Preparation. AERA Annual Meeting 2009, San Diego CA

Morley, E., John, J., Powell, W., Volkert, R., and Cheng, Z., 2009, Characteristics of Orange Calcite Bodies in the Western New Jersey Highlands. NE Geological Society of America 2009, Portland ME

Boger, R., Cheng, Z., Powell, W., Bomba, M., and Tweeddale, R., 2009, Integrating Geospatial Tools in Undergraduate Foundational Geoscience Courses in Brooklyn College. NE Geological Society of America 2009, Portland ME

Boger, R., Powell, W., Tomkiewicz, M., Hainline. L., and Parsons, S., 2008, City-As-Lab: Integration of Environmental Science into Brooklyn High Schools. NE Geological Society of America 2008, Buffalo NY

Powell, W., Yarrow, L.M., Ellis, D., and Belton, E., 2008. Team Teaching in Learning Communities for a Non-Traditional Freshman Student Body, 27th Annual Conference on the First Year Experience, San Francisco CA

Powell, W., 2007, Silicification as a Common Mode of Preservation in North American Cambrian Lagerstätten. Geological Society of America Annual Meeting, Denver CO

Powell, W., Miele, E., Buskulic, A., Shakir, K., and Tweeddale, R., Teachers as Invaluable Contributors to the Design of Teacher-Training Programs. GSA 2007, Denver CO

Morley, E., and Powell, W., 2007, Elemental Analysis of Host-Rock Matrix Minerals Associated with Soft-Tissue Preservation in the Burgess Shale and Kinzers Formations. Geological Society of America Annual Meeting, Denver CO

Matt, P., and Powell, W., 2007, A Proposed Banded Iron Formation Protolith for Quartz-Pyroxene Gneiss at the Roomy Magnetite Mine, Wanaque, New Jersey. NE Geological Society of America Annual Meeting, Durham, NH

Powell, W., Miele, E., Brodbar, S, and MacDonald, M., 2006, Partnerships of Formal and Informal Education: Preparing Teachers to Teach Earth Science Now and in the Future. Geological Society of America Annual Meeting, Philadelphia PA

Miele, E., Powell, W., Kinzler, R., and MacDonald, M., 2006. Crossing Divides: Earth Science Teacher Education Partnerships. Geological Society of America Annual Meeting, Philadelphia PA

Matt, P., and Powell, W., 2007, Geological Setting of the Roomy Magnetite Mine, New Jersey Highlands. Geological Society of America Annual Meeting, Philadelphia PA

Papaneocleous, A., and Powell, W., 2006, Chemical Characteristics of Chlorite and Muscovite in Trilobite Fossils and Surrounding Matrix from the Burgess Shale, British Columbia, Canada. Geological Society of America Annual Meeting, Philadelphia PA

Singh, S., and Powell, W., 2006, Characteristics of Pyrite in the Middle Cambrian Burgess Shale Formation with Implications for Paleo-Redox Conditions during Deposition. Geological Society of America Annual Meeting, Philadelphia PA

Powell, W., 2006, Trace Elements as Proxies for Bottom-Water Paleo-Oxygenation in Cambrian Shale Basins. NE Geological Society of America Annual Meeting, Harrisburg PA

Powell, W., 2005, Mineralogical and Lithological Features Associated with Brine Seeps in the Burgess Shale: Implications for the Interpretation of the Kinzers Shale. Geological Society of America Annual Meeting, Salt Lake City UT

Powell, W., 2005, Using Art and Cultural Halls in Museums to Teach Geology in a Liberal Arts Context. Geological Society of America Annual Meeting, Salt Lake City UT

Miele, E., Powell, W., Sloan, H., and MacDonald, M., 2005, Partnership between natural history museum and university for earth science teacher preparation requires understanding multiple missions. Geological Society of America Annual Meeting, Salt Lake City UT

Johnston, P., Christopher J. Collom, Powell, W., and Motz, K. , 2004, Seafloor brine seeps in the Middle Cambrian Burgess Shale and related units (British Columbia, Canada); paleoecologic and sedimentologic implications. International Geological Congress, Florence, Italy

Papaneocleous, A., and Powell, W., 2004, Sheet-Silicate Replacement of Skeletal Fossils in the Walcott Quarry of the Burgess Shale, British Columbia, Canada. Geological Society of America Northeastern Section and Southeastern Section Joint Meeting, Washington, DC

Powell, W.G,and Leveson, D.J., 2003, One Problem at a Time: The Evolution of an Online Course, International Conference of Geoscience Education, Calgary, Alberta

Johnston, P., Collom, C. Motz, K., and Powell, W., 2003, Seep-related controls on the distribution of biota preserved in the Middle Cambrian Burgess Shale and younger units, British Columbia. Canadian Paleontological Conference, Edmonton, Alberta

Powell, W., and Leveson, D.J., 2002, Ease of sharing as a primary design principle for Brooklyn College Geowebs, Digital Library for Earth Science Education, Annual Meeting, Cornell University, Ithaca, New York

Powell, W.,  2000, Student Perspectives on Virtual Geology Labs. In: Abstracts with Programs - Geological Society of America, Vol. 32, Issue 7, p.267-268

Powell, W., The importance of the eureka moment in science education. Geological Society of America Annual Meeting, 1999, Denver, Colorado

Powell, W., 1998, The Burgess Shale High-School Research Project; An Ongoing Co-operative Geoscience Outreach Program. In: Program with Abstracts - Geological Association of Canada; Mineralogical Association of Canada: Joint Annual Meeting, 1998, v. 23, p.148-149

Powell, W., 1996, An Exsolution Origin for ‘Low-Temperature' Sulphides at the Hemlo Gold Deposit, Ontario, Canada. In: Abstracts with Programs - Geological Society of America, 1996, v. 28, Issue 7, p.92

Powell, W., 1996, The Burgess Shale High-School Research Program (BSHSRP); Student Involvement in Research, Yoho National Park, British Columbia, Canada. In: Abstracts with Programs - Geological Society of America, 1996, Vol. 28, p.83

Powell, W. and Ghent, E., 1995, Low-Grade Metamorphism of Early Jurassic Island-Arc Volcanic Rocks of the Rossland Group, Southeast British Columbia. In: Program with Abstracts - Geological Association of Canada; Mineralogical Association of Canada: Joint Annual Meeting, 1995, v. 20, p.85

Powell, W., Conditions and Relative Timing of Metamorphism during the Evolution of the Southern Abitibi Greenstone Belt. In: Program with Abstracts - Geological Association of Canada; Mineralogical Association of Canada: Joint Annual Meeting, 1994, v.. 19, p.90

Powell, W., 1993, Relative Timing of Metamorphism and Tectonism during the Evolution of the Southern Abitibi Greenstone Belt. In: DV - Direction Generale de l'Exploration Geologique et Minerale, 1993, p.49-50

Powell, W., 1991, P-T Conditions of Regional Metamorphism and Limits of Post-Metamorphic Throw on the Larder Lake-Cadillac Break (LLCB) in the Matachewan area, Abitibi Belt. In: Program with Abstracts - Geological Association of Canada; Mineralogical Association of Canada: Joint Annual Meeting, May 1991, v. 16, p.101