Mike O'Keeffe

Odom, W.E., Ruleman, C.A., Sterne, E.J., O'Keeffe, M.K., and Morgan, M.L., 2024, Cosmogenic Al-26/Be-10 Isochron Burial Data for the Nussbaum Gravel at Baculite Mesa, CO: U.S. Geological Survey data release, https://doi.org/10.5066/P1B2MCHG.

Morgan, M.L. and O’Keeffe, M.K., 2023, Data Tables of Detrital Zircon U-Pb Geochronologic Analyses and Trace Element Concentrations of Select Cretaceous, Paleogene, and Neogene Rocks, Denver Basin and Northeastern Colorado (Data): Colorado Geological Survey ON-004-04D – V20231110, https://doi.org/10.58783/cgs.on00404d.icwa5545.

Morgan, M.L., O’Keeffe, M.K., Mahatma, A.A., Keller, S.M., 2023, Detrital Zircon Age Estimates of Select Upper Cretaceous and Neogene Sedimentary Rocks, Denver Basin and Northeastern Colorado: Geological Society of America Abstracts with Programs, vol. 55, no. 5, https://gsa.confex.com/gsa/2023RM/meetingapp.cgi/Paper/387863.

O'Keeffe, M.K., 2023, Colorado mineral and energy activities 2021-2022: Colorado Geological Survey Information Series 85, 33 p.

Morgan, M.L., O'Keeffe, M.K., and Marr, A., 2023, Geologic map of the Brighton Quadrangle, Adams County, Colorado: Colorado Geological Survey Open-File Report 22-02, 1:24,000 scale.

O'Keeffe, M.K., Morgan, M.L., Keller, S.M., and Lindsey, K.O., 2022, Reconnaissance map of sand, gravel, and quarry aggregate resources, Elbert County, Colorado: Colorado Geological Survey ON-007-09D/M, GIS data download and online map, 10 p.

O'Keeffe, M.K., 2022, Colorado mineral and energy activities 2020-2021: Colorado Geological Survey Information Series 84, 34 p.

O'Keeffe, M.K., Peretyatko, A.I., and Mahatma, A., 2021, Alkaline complexes of the Wet Mountains area, Colorado - A geological summary, bibliography, and data compilation of critical mineral laboratory results: Colorado Geological Survey Open-File Report OFR-20-11, 48 p.

O'Keeffe, M.K., Dechesne, M., Morgan, M.L., Keller, S.M., Pfaff, K., Mahatma, A., and Peretyatko, A.I., 2021, Beach placer mineral deposits along localized paleoshorelines of the Western Interior Seaway, Upper Cretaceous Fox Hills Sandstone, Eastern Denver Basin, Colorado: Colorado Geological Survey Resource Series 48, 45 p.

O'Keeffe, M.K. and Berry, K.A., 2021, Colorado mineral and energy activities 2019-2020: Colorado Geological Survey Information Series 83, 32 p.

O'Keeffe, M.K., Che Zabri, M.Z., Mahatma, A., and Fitzgerald, F.S., 2021, Digital map version of the radioactive mineral occurrences of Colorado and bibliography: by Nelson-Moore, J.L., Bishop-Collins, D., and Hornbaker, A.L., 1978, Radioactive mineral occurrences of Colorado and bibliography, Colorado Geological Survey Bulletin 40, 1054 p., 12 plates: Colorado Geological Survey ON-B-40M (online map).

Che Zabri, M.Z., O'Keeffe, M.K., and Mahatma, A., 2021, Digital data (partial) version of the radioactive mineral occurrences of Colorado and bibliography: by Nelson-Moore, J.L., Bishop-Collins, D., and Hornbaker, A.L., 1978, Radioactive mineral occurrences of Colorado and bibliography, Colorado Geological Survey Bulletin 40, 1054 p., 12 plates: Colorado Geological Survey Online Series ON-B-40D (data download).

Broes, L.D., Mahatma, A., Che Zabri, M.Z., O’Keeffe, M.K., and Hopkins, J.C., 2020, Select geological logs associated with coal resources, Denver and Cheyenne Basins, Colorado: Colorado Geological Survey Online Series ON-OF-78-08.

O'Keeffe, M.K. and Berry, K.A., 2019, Colorado mineral and energy industry activities 2018-2019: Colorado Geological Survey Information Series IS-82, 30 p.

O'Keeffe, M.K., 2019, Colorado aggregate resources, Colorado Geological Survey Online Series ON-007-05 (storymap).

O’Keeffe, M.K., Dechesne, M., Morgan, M.L., Pfaff, K., and Keller, S.M., 2019, Critical minerals in beach placer deposits of the Fox Hills Sandstone, Elbert County, Colorado: Geological Society of America Abstracts with Programs, Geological Society of America Annual Meeting, Tucson, AZ, Vol. 51, No. 5, https://gsa.confex.com/gsa/2019AM/webprogram/Paper337497.html.

O'Keeffe, M.K., Barkmann, P., and Fitzgerald, F.S., 2019, Colorado abandoned mine land inventory and information hub - report on the development and data sources: Colorado Geological Survey Open-File Report OF-19-12, 44 p.

O'Keeffe, M.K., Morgan, M.L., Fitzgerald, F.S., 2019, Aggregate resources of Colorado: Colorado Geological Survey Online Series ON-007-01 (online map).

O'Keeffe, M.K., Peretyatko, A.I., and Berry, K.A., 2018, Colorado mineral and energy industry activities 2017-2018: Colorado Geological Survey Information Series 81, 30 p.

O’Keeffe, M.K., Morgan, M.L., Keller, S.M., and Horkley, K.L., 2018, Reconnaissance of potential sand sources in Colorado for hydraulic fracturing: Colorado Geological Survey Resource Series RS-47, 33 p., online map is located here

O’Keeffe, M.K., and Berry, .K.A., 2017, Colorado mineral and energy industry activities 2016-2017: Colorado Geological Survey Information Series IS-80, 31 p.

Feeney, S., O’Keeffe, M.K., Barkmann, P.E., and Fitzgerald, F.S., 2017, The Colorado abandoned mine land information hub: Colorado Watershed Assembly – Sustaining Colorado Watersheds Conference poster, Avon, CO.

Cappa, J.A., O’Keeffe, M.K., Guilinger, J.R., and Berry, K.A., 2016, Colorado mineral and energy industry activities 2015-2016: Colorado Geological Survey Information Series IS-79, 41 p.

Research Interests

• Mineral deposits and critical minerals
• Aggregate resources
• Mineral and energy activities in Colorado
• Abandoned mines, waste piles, and tailings
• Environmental impacts of mining and industry

Experience

Geologist, Colorado Geological Survey, Golden, CO, 2015-present

Independent Consulting Geologist, CO, 2013-2015

Senior Geologist/Project Manager, Consultant, Greenwood Village, CO, 2000-2013

Geologist, Consultant, Northglenn, CO, 1998-2000

Exploration/Mine Geologist, Tyrone, NM and Ajo, AZ, 1995-1998

Education

M.S. Geology, New Mexico Institute of Mining and Technology, 1994

B.S. Geology, Eastern Illinois University, 1992