William Ridley
Willian (Ian) Ridley is a Research Geologist with the Geology, Geophysics, and Geochemistry Science Center.
Professional Experience
Previous USGS Assignments
Staff Scientist, Central Colorado Project Staff Scientist, Integrated Studies of National Parks (Big Bend)
Section Chief, Branch of Exploration Geochemistry and Branch of GeochemistryConsultant Geochemist, Evergreen, CO
Geochemist, Geoexplorers International, Denver, CO
Exploration Manager, Beard Oil Company, Evergreen , CO
Research Specialist, Exxon Production Research Company, Houston, TX
Adjunct Professor, Columbia University, NY, NY
Anglo-American Visiting Professor of Geochemistry, University of Witswatersrand, Johanessburg, SA
Associate Professor, Columbia University, NY, NY
Adjunct Professor, Rutgers University, New Brunswick, NJ
Staff Scientist, Lunar and Planetary Institute, Houston, TX
National Research Council Associate, NASA-MSC, Houston, TX
Research Geologist, British Geological Survey, London, UK
Education and Certifications
Ph.D. (Geochemistry, Volcanology), Royal College of Science,Univ. of London 1968
Associate (Geochemistry), Royal School of Mines, Univ. of London 1968
B.Sc. (Geology/Chemistry), Royal College of Science, Univ. of London 1964
Affiliations and Memberships*
Adjunct Professor, Colorado School of Mines
Honors and Awards
Judd Research Prize, Imperial College, London University
NASA Distinguished Service Award
USGS Star Award
Ten NASA Research Grants
Seven NSF Research Grants
Four Miscellaneous Awards (EPRI, DOE, ONR)
Three USGS Venture Capital Awards
Abstracts and Presentations
141 abstract and extended abstracts
125 peer-reviewed papers
Science and Products
Filter Total Items: 38
Studies by the U.S. Geological Survey in Alaska, 2005 Studies by the U.S. Geological Survey in Alaska, 2005
Summary The collection of papers that follows continues the series of U.S. Geological Survey (USGS) investigative reports in Alaska under the broad umbrella of the geologic sciences. This series represents new and sometimes-preliminary findings that are of interest to Earth scientists in academia, government, and industry; to land and resource managers; and to the general public. The...
Authors
David W. Houseknecht, Kenneth J. Bird, Michelle L. Coombs, Christina A. Neal, Rick L. Wessels, Robert G. McGimsey, John F. Slack, W.C. Pat Shanks, Susan M. Karl, Pamela A. Gemery, Peter E. Bittenbender, W. Ian Ridley, W. Matthew Burns, Daniel O. Hayba, Elisabeth L. Rowan, Robert A. Ayuso, Peter J. Haeussler, Gregory A. Wandless, Anna Colvin
Incorporation of seawater into mid-ocean ridge lava flows during emplacement Incorporation of seawater into mid-ocean ridge lava flows during emplacement
Evidence for the interaction between seawater and lava during emplacement on the deep seafloor can be observed in solidified flows at a variety of scales including rapid quenching of their outer crusts and the formation of lava pillars through the body of the flow. Recently, an additional interaction, incorporation of heated seawater (vapor) into the body of a flow, has been proposed...
Authors
S.A. Soule, D.J. Fornari, M.R. Perfit, W.I. Ridley, M.H. Reed, J.R. Cann
A review of isotopic composition as an indicator of the natural and anthropogenic behavior of mercury A review of isotopic composition as an indicator of the natural and anthropogenic behavior of mercury
There are seven stable isotopes of Hg that can be fractionated as a result of inorganic and organic interactions. Important inorganic reactions involve speciation changes resulting from variations in environmental redox conditions, and phase changes resulting from variations in temperature and/or atmospheric pressure. Important organic reactions include methylation and demethylation...
Authors
W.I. Ridley, S.J. Stetson
Channelized lava flows at the East Pacific Rise crest 9°-10°N: the importance of off-axis lava transport in developing the architecture of young oceanic crust Channelized lava flows at the East Pacific Rise crest 9°-10°N: the importance of off-axis lava transport in developing the architecture of young oceanic crust
Submarine lava flows are the building blocks of young oceanic crust. Lava erupted at the ridge axis is transported across the ridge crest in a manner dictated by the rheology of the lava, the characteristics of the eruption, and the topography it encounters. The resulting lava flows can vary dramatically in form and consequently in their impact on the physical characteristics of the...
Authors
S.A. Soule, D.J. Fornari, M.R. Perfit, M.A. Tivey, W.I. Ridley, Hans Schouten
Magmatic effects of the Cobb hot spot on the Juan de Fuca Ridge Magmatic effects of the Cobb hot spot on the Juan de Fuca Ridge
The interaction of the Juan de Fuca Ridge with the Cobb hot spot has had a considerable influence on the magmatism of the Axial Segment of the ridge, the second-order segment that overlies the hot spot. In addition to the construction of the large volcanic edifice of Axial Seamount, the Axial Segment has shallow bathymetry and a prevalence of constructional volcanic features along its...
Authors
John Chadwick, M. Perfit, I. Ridley, I. Jonasson, G. Kamenov, W. Chadwick, R. Embley, Roux P. le, M. Smith
Science and Products
Filter Total Items: 38
Studies by the U.S. Geological Survey in Alaska, 2005 Studies by the U.S. Geological Survey in Alaska, 2005
Summary The collection of papers that follows continues the series of U.S. Geological Survey (USGS) investigative reports in Alaska under the broad umbrella of the geologic sciences. This series represents new and sometimes-preliminary findings that are of interest to Earth scientists in academia, government, and industry; to land and resource managers; and to the general public. The...
Authors
David W. Houseknecht, Kenneth J. Bird, Michelle L. Coombs, Christina A. Neal, Rick L. Wessels, Robert G. McGimsey, John F. Slack, W.C. Pat Shanks, Susan M. Karl, Pamela A. Gemery, Peter E. Bittenbender, W. Ian Ridley, W. Matthew Burns, Daniel O. Hayba, Elisabeth L. Rowan, Robert A. Ayuso, Peter J. Haeussler, Gregory A. Wandless, Anna Colvin
Incorporation of seawater into mid-ocean ridge lava flows during emplacement Incorporation of seawater into mid-ocean ridge lava flows during emplacement
Evidence for the interaction between seawater and lava during emplacement on the deep seafloor can be observed in solidified flows at a variety of scales including rapid quenching of their outer crusts and the formation of lava pillars through the body of the flow. Recently, an additional interaction, incorporation of heated seawater (vapor) into the body of a flow, has been proposed...
Authors
S.A. Soule, D.J. Fornari, M.R. Perfit, W.I. Ridley, M.H. Reed, J.R. Cann
A review of isotopic composition as an indicator of the natural and anthropogenic behavior of mercury A review of isotopic composition as an indicator of the natural and anthropogenic behavior of mercury
There are seven stable isotopes of Hg that can be fractionated as a result of inorganic and organic interactions. Important inorganic reactions involve speciation changes resulting from variations in environmental redox conditions, and phase changes resulting from variations in temperature and/or atmospheric pressure. Important organic reactions include methylation and demethylation...
Authors
W.I. Ridley, S.J. Stetson
Channelized lava flows at the East Pacific Rise crest 9°-10°N: the importance of off-axis lava transport in developing the architecture of young oceanic crust Channelized lava flows at the East Pacific Rise crest 9°-10°N: the importance of off-axis lava transport in developing the architecture of young oceanic crust
Submarine lava flows are the building blocks of young oceanic crust. Lava erupted at the ridge axis is transported across the ridge crest in a manner dictated by the rheology of the lava, the characteristics of the eruption, and the topography it encounters. The resulting lava flows can vary dramatically in form and consequently in their impact on the physical characteristics of the...
Authors
S.A. Soule, D.J. Fornari, M.R. Perfit, M.A. Tivey, W.I. Ridley, Hans Schouten
Magmatic effects of the Cobb hot spot on the Juan de Fuca Ridge Magmatic effects of the Cobb hot spot on the Juan de Fuca Ridge
The interaction of the Juan de Fuca Ridge with the Cobb hot spot has had a considerable influence on the magmatism of the Axial Segment of the ridge, the second-order segment that overlies the hot spot. In addition to the construction of the large volcanic edifice of Axial Seamount, the Axial Segment has shallow bathymetry and a prevalence of constructional volcanic features along its...
Authors
John Chadwick, M. Perfit, I. Ridley, I. Jonasson, G. Kamenov, W. Chadwick, R. Embley, Roux P. le, M. Smith
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government