Dr. L. Lynn Chyi

Dr. L. Lynn Chyi

Title: Professor
Department: Geosciences
Office: CRH 218
Phone: 330 972 7635
Fax: 330 972 7611
Email: lchyi@uakron.edu
Curriculum Vitae: Download in PDF format

Research Accomplishments

Dr. Chyi's research focuses on the theory and application of geochemistry. His major research areas include Platinum Group Elements (PGE) geochemistry, trace element stratigraphy, maturation of sediments, coal geology, emanation and migration of radon, and evolution of groundwater under human influence, tire leachate, and highway aggregate.

His research in PGE geochemistry emphasizes the origin of PGE and the concentration processes. Trace elements are used as tools in fingerprinting sedimentary formations. The most recent effort is characterizing coal beds with Al-Sc-La geochemical coherent triad. Vitrinite reflectance is used in evaluating the maturation of hydrocarbons and basin analysis. The role of migration of heated groundwater in modifying the maturation pattern is being studied at the present time. His research in coal geology emphasizes the characteristics of low-sulfur coal both in the depositional environment and subsequent evolution. Radon emanation is being studied under field conditions for earthquake prediction. Under human impact, both physical and chemical properties of groundwater will change. These changes plus changes in flow pattern are being modeled with the computer. This modeling study is also expected to benefit the study in the maturation of sediments. His interest also include tire leachate and highway aggregates.



Chyi, L.L., Pandit, H.L. and Liang, R.Y., 2006, Engineering implications of petroleum contents and carbonate aggregate mineralogy, Proceedings 40th Forum on the Geology of Industrial Minerals (in print).

Chyi, L.L., Yang, T. F., Fu, C.C., Walia, V., Chen, C.H., Liu, T.K., Song, S.R., Lee, M., Lin, C.W., and Lin, C.C., 2006, Seismo-geochemical variations in SW Taiwan: multi-parameter automatic gas monitoring results, Pure and Applied Geophysics, v. 163, no. 4, p. 693-709.

Chyi, L.L., Quick, T. J., Yang, T. F., and Chen, C. C., 2006, Soil radon time series and earthquake monitoring, Proceedings of International Brainstorming Session on Geochemical Precursors for Earthquakes (in print).

Chyi, L.L., 2006, Advanced research on shredded tire leachate: Report of Investigation submitted to Stark-Tuscarawas-Wayne Joint Solid Waste Management District, 146 p.

Chyi, L.L., Yang, T.F., Chou, C.Y., Chen, C.H., and Jiang, J.H., 2003, Exhalation of radon and its carrier gases in SW Taiwan: Radiation Measurements, v. 36, p. 425-429.

Chyi, L.L., Quick, T.J., Yang, T.F., and Chen, C.H., 2003, Soil gas radon spectra and earthquake Prediction: Proceedings of the 7th International Conference on Gas Geochemistry, p. 31-32.

Chyi, L.L., and Muskett, R.R., 2001, Emplacement and tectonics of Cu-Ni sulfide: In Hagni, R.D. (ed), Studies on ore deposits, mineral economics, and applied mineralogy: with emphasis on Mississippi Valley-type base metal and carbonatite-related ore deposits: University of Missouri-Rolla, Rolla, MO, p. 206-216.

Chyi, L.L., Chou, C.Y., Yang, F.T., and Chen, C.H., 2001, Continuous radon measurement in faults and earthquake precursor pattern recognition: Western Pacific Earth Sciences, v. 1, p. 227-246.

Chyi, L.L., 2001, Method for precious metal recovery from slag: U.S. Patent Office No. 6,264,039.

Chyi, L.L., 1997, Consulting and Engineering Services for a pilot Waste Tire Management Project: Report of Investigation to Ohio department of Natural Resources Division of Reclamation-Abandoned Mine Lands Program, Project ODNR St-PS-05-F, 122 p.

Chyi, L.L., 1997, Transformation from a Low-Sulfur Coal, the Harlem Coal of the Central Appalachian Basin: Inter. Jour. of Coal Geology, v.33, p. 317-331.

Chyi, L.L., Medlin, J.S., and Coleman, L.S., 1996, Preface: Intern. Jour. of Coal Geology, Sp. Issue on Coalification and Coal Petrology, v. 30, p. 275.

Chyi, L.L. and Medlin, J.S., 1996, Characterizing coal beds with geochemical coherent Triad: Intern. Jour. of Coal Geology, Sp. Issue on Coalification and Coal Petrology, v. 30, p. 349-359.

Chyi, L.L., Zhan, M.G., and Rhao, J.G., 1996, Late Triassic - Cretaceous basin and range structure and its control on mineralization of Cu, Pb, Zn, Au, Ag ore deposits in Southern China: Acta Geoscientia Sinica, Sp. Issue dedicated to the 30th International Geological Congess, p. 54-59.

Chyi, L.L. and Quick, T.J., 1995, Gas Removal Apparatus: Patent, U.S. Patent and Trademark Office, Patent No. 5,438,324.

Chyi, L.L. and Runyon, C.V., 1992, Assessment of clean coal technology: in H. Wang, and S.L. Chang (eds) Energy, environment, and information management, Argonne National Lab., p. 1/27-2/33.

Chyi, L.L. and Carter, C.H., 1992, Mineral industries: in R.B. Kent (ed), Region in transition: an economic and social atlas of North East Ohio, University of Akron Press, p. 158-165.

Chyi, L.L. and Chou, C.L., 1990, (eds) Recent advances in coal geochemistry: GSA Special Paper 248, v-vi.

Published Abstracts and other works

Chyi, L.L, Quick, T.J. and Ross, J., 2006, Thermal evolution of a shredded tire monofill: Geological Society of America Abstracts with Programs, v. 38, no. 4, p. 61.

Chyi, L.L., Muskett, R.R., 2004, Tectonic emplacement of PGE bearing Cu-Ni sulfide deposits: GSA 2004 Abstracts with Programs, v. 36, no. 3, p.19.

Eschete, D.W., and Chyi, L.L., 2003, Migration and natural attenuation of sulfate drainage in an area adjacent to abandoned coal mines in northeastern Ohio: Geological Society of America Abstracts with Programs, v. 35, no. 2, p. 16.

Eschete, D.W., and Chyi, L.L., 2003, Source identification and natural attenuation of arsenic contaminated groundwater in northeastern Ohio: Geological Society of America Abstracts with Programs, v. 35, no. 6, p. 565.

Chyi, L.L., Quick, T.J., Yang, T.F., and Chen, C.H., 2003, Soil gas radon spectra and earthquake Prediction: Programs and Abstracts, 7th International Conference on Gas Geochemistry, p. 29.

Chyi, L.L., Quick, J.J., Tang, F.T. and Chen, C.H., 2002, Nature of soil gas radon release and earthquake prediction: Geological Society of America Abstracts with Program v. 34, no. 6, p. 262.

Chyi, L.L., 2000, Shredded tire leachate from monofill sites, p. 129.


Ph.D., 1972, McMaster University


  • Physical Geology (3370:101)
  • Medical Geology (3370:129)
  • Engineering Geology (3370:301)
  • Field Studies: China (3370:495/695)
  • Coal Geology (3370:536)
  • Economic Geology (3370:437/537)
  • Nuclear Geology (3370:639)