Cliff D Taylor
Cliff Taylor is a Scientist Emeritus (Research Geologist) with the Geology, Geophysics, and Geochemistry Science Center.
Science and Products
Filter Total Items: 56
Mauritania – A greenfields exploration opportunity in northwestern Africa Mauritania – A greenfields exploration opportunity in northwestern Africa
No abstract available.
Authors
Cliff D. Taylor, E. D. Anderson, D. C. Bradley, G. Beaudoin, Michael A. Cosca, Robert G. Eppinger, Gregory L. Fernette, Carol A. Finn, Michael J. Friedel, Stuart A. Giles, Richard J. Goldfarb, John D. Horton, Gregory K. Lee, Erin E. Marsh, Jeffrey L. Mauk, Holly A. Motts, M. Y. Ould El Joud, S. Ould Soueidatt, A. Ould Taleb Mohamed, Barnaby W. Rockwell
Permissive tracts for incompatible element deposits hosted in pegmatities, alkaline rocks, and carbonatities in Mauritania (phase V, deliverable 86), Chapter Q1 in Second projet de renforcement institutionnel du secteur minier de la République Islamiq Permissive tracts for incompatible element deposits hosted in pegmatities, alkaline rocks, and carbonatities in Mauritania (phase V, deliverable 86), Chapter Q1 in Second projet de renforcement institutionnel du secteur minier de la République Islamiq
In 1996, at the request of the Government of the Islamic Republic of Mauritania, a team of U.S. Geological Survey (USGS) scientists produced a strategic plan for the acquisition, improvement and modernization of multidisciplinary sets of data to support the growth of the Mauritanian minerals sector and to highlight the geological and mineral exploration potential of the country. In 1999...
Authors
Cliff D. Taylor, John D. Horton
Permissive tracts for nickel, copper, platinum group elements (PGE), and chromium deposits of Mauritania (phase V, deliverable 66): Chapter G1 in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie ( Permissive tracts for nickel, copper, platinum group elements (PGE), and chromium deposits of Mauritania (phase V, deliverable 66): Chapter G1 in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (
In 1996, at the request of the Government of the Islamic Republic of Mauritania, a team of U.S. Geological Survey (USGS) scientists produced a strategic plan for the acquisition, improvement and modernization of multidisciplinary sets of data to support the growth of the Mauritanian minerals sector and to highlight the geological and mineral exploration potential of the country. In 1999...
Authors
Cliff D. Taylor, John D. Horton
Permissive tracts for volcanogenic massive sulfide deposits in Mauritania (phase V, deliverable 76): Chapter L1 in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II) Permissive tracts for volcanogenic massive sulfide deposits in Mauritania (phase V, deliverable 76): Chapter L1 in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II)
In 1996, at the request of the Government of the Islamic Republic of Mauritania, a team of U.S. Geological Survey (USGS) scientists produced a strategic plan for the acquisition, improvement and modernization of multidisciplinary sets of data to support the growth of the Mauritanian minerals sector and to highlight the geological and mineral exploration potential of the country. In 1999...
Authors
Cliff D. Taylor, John D. Horton
Permissive tracts for algoma-, superior-, and oolitic-type iron deposits in Mauritania (phase V, deliverable 82): Chapter O1 in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II) Permissive tracts for algoma-, superior-, and oolitic-type iron deposits in Mauritania (phase V, deliverable 82): Chapter O1 in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II)
In 1996, at the request of the Government of the Islamic Republic of Mauritania, a team of U.S. Geological Survey (USGS) scientists produced a strategic plan for the acquisition, improvement and modernization of multidisciplinary sets of data to support the growth of the Mauritanian minerals sector and to highlight the geological and mineral exploration potential of the country. In 1999...
Authors
Cliff D. Taylor, John D. Horton
Geology, geochemistry, and genesis of the Greens Creek massive sulfide deposit, Admiralty Island, southeastern Alaska Geology, geochemistry, and genesis of the Greens Creek massive sulfide deposit, Admiralty Island, southeastern Alaska
In 1996, a memorandum of understanding was signed by representatives of the U.S. Geological Survey and Kennecott Greens Creek Mining Company to initiate a cooperative applied research project focused on the Greens Creek massive sulfide deposit in southeastern Alaska. The goals of the project were consistent with the mandate of the U.S. Geological Survey Mineral Resources Program to...
Authors
Cliff D. Taylor, Craig A. Johnson
Gold deposit styles and placer gold characterisation in northern and east-central Madagascar Gold deposit styles and placer gold characterisation in northern and east-central Madagascar
Microchemical characterisation of bedrock and placer gold grains from six gold districts within the Archaean domains and intervening Neoproterozoic Anaboriana-Manampotsy belt of northern and east-central Madagascar show few opaque inclusions (e.g pyrrhotite, Bi tellurides) but wide range of Ag contents (40wt%). Some districts exhibit multiple source populations of grains. The...
Authors
Peter E. J Pitfield, Michael T. Styles, Cliff D. Taylor, Roger M. Key, Wilfried Bauer, A Vonimanitra Ralison
Geology and Nonfuel Mineral Deposits of Africa and the Middle East Geology and Nonfuel Mineral Deposits of Africa and the Middle East
A nation's endowment of nonfuel mineral resources, relative to the world's endowment, is a fundamental consideration in decisions related to a nation's economic and environmental well being and security. Knowledge of the worldwide abundance, distribution, and general geologic setting of mineral commodities provides a framework within which a nation can make decisions about economic...
Authors
Cliff D. Taylor, Klaus J. Schulz, Jeff L. Doebrich, Greta Orris, Paul Denning, Michael J. Kirschbaum
Rates of zinc and trace metal release from dissolving sphalerite at pH 2.0-4.0 Rates of zinc and trace metal release from dissolving sphalerite at pH 2.0-4.0
High-Fe and low-Fe sphalerite samples were reacted under controlled pH conditions to determine nonoxidative rates of release of Zn and trace metals from the solid-phase. The release (solubilization) of trace metals from dissolving sphalerite to the aqueous phase can be characterized by a kinetic distribution coefficient, (Dtr), which is defined as [(Rtr/X(tr)Sph)/(RZn/X(Zn) Sph)], where...
Authors
M.R. Stanton, P. A. Gemery-Hill, Wayne C. Shanks, C. D. Taylor
The metallogeny of Late Triassic rifting of the Alexander terrane in southeastern Alaska and northwestern British Columbia The metallogeny of Late Triassic rifting of the Alexander terrane in southeastern Alaska and northwestern British Columbia
A belt of unusual volcanogenic massive sulfide (VMS) occurrences is located along the eastern margin of the Alexander terrane throughout southeastern Alaska and northwestern British Columbia and exhibits a range of characteristics consistent with a variety of syngenetic to epigenetic deposit types. Deposits within this belt include Greens Creek and Windy Craggy, the economically most...
Authors
C. D. Taylor, W. R. Premo, A. L. Meier, J.E. Taggart
Descriptions of mineral occurrences and interpretation of mineralized rock geochemical data in the Stikine geophysical survey area, Southeastern Alaska Descriptions of mineral occurrences and interpretation of mineralized rock geochemical data in the Stikine geophysical survey area, Southeastern Alaska
Detailed descriptions of some of the more significant mineral occurrences in the Stikine Airborne Geophysical Survey Project Area are presented based upon site-specific examinations by the U.S. Geological Survey in May of 1998. Reconnaissance geochemical data on unmineralized igneous and sedimentary host rocks, and mineralized rocks are also presented and are accompanied by a brief...
Authors
Cliff D. Taylor
Petrogenesis of late-stage granites and Y-REE-Zr-Nb-enriched vein dikes of the Bokan Mountain stock, Prince of Wales Island, southeastern Alaska Petrogenesis of late-stage granites and Y-REE-Zr-Nb-enriched vein dikes of the Bokan Mountain stock, Prince of Wales Island, southeastern Alaska
No abstract available.
Authors
J.A. Philpotts, C. D. Taylor, Mitsumoto Tatsumoto, H. E. Belkin
Science and Products
Filter Total Items: 56
Mauritania – A greenfields exploration opportunity in northwestern Africa Mauritania – A greenfields exploration opportunity in northwestern Africa
No abstract available.
Authors
Cliff D. Taylor, E. D. Anderson, D. C. Bradley, G. Beaudoin, Michael A. Cosca, Robert G. Eppinger, Gregory L. Fernette, Carol A. Finn, Michael J. Friedel, Stuart A. Giles, Richard J. Goldfarb, John D. Horton, Gregory K. Lee, Erin E. Marsh, Jeffrey L. Mauk, Holly A. Motts, M. Y. Ould El Joud, S. Ould Soueidatt, A. Ould Taleb Mohamed, Barnaby W. Rockwell
Permissive tracts for incompatible element deposits hosted in pegmatities, alkaline rocks, and carbonatities in Mauritania (phase V, deliverable 86), Chapter Q1 in Second projet de renforcement institutionnel du secteur minier de la République Islamiq Permissive tracts for incompatible element deposits hosted in pegmatities, alkaline rocks, and carbonatities in Mauritania (phase V, deliverable 86), Chapter Q1 in Second projet de renforcement institutionnel du secteur minier de la République Islamiq
In 1996, at the request of the Government of the Islamic Republic of Mauritania, a team of U.S. Geological Survey (USGS) scientists produced a strategic plan for the acquisition, improvement and modernization of multidisciplinary sets of data to support the growth of the Mauritanian minerals sector and to highlight the geological and mineral exploration potential of the country. In 1999...
Authors
Cliff D. Taylor, John D. Horton
Permissive tracts for nickel, copper, platinum group elements (PGE), and chromium deposits of Mauritania (phase V, deliverable 66): Chapter G1 in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie ( Permissive tracts for nickel, copper, platinum group elements (PGE), and chromium deposits of Mauritania (phase V, deliverable 66): Chapter G1 in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (
In 1996, at the request of the Government of the Islamic Republic of Mauritania, a team of U.S. Geological Survey (USGS) scientists produced a strategic plan for the acquisition, improvement and modernization of multidisciplinary sets of data to support the growth of the Mauritanian minerals sector and to highlight the geological and mineral exploration potential of the country. In 1999...
Authors
Cliff D. Taylor, John D. Horton
Permissive tracts for volcanogenic massive sulfide deposits in Mauritania (phase V, deliverable 76): Chapter L1 in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II) Permissive tracts for volcanogenic massive sulfide deposits in Mauritania (phase V, deliverable 76): Chapter L1 in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II)
In 1996, at the request of the Government of the Islamic Republic of Mauritania, a team of U.S. Geological Survey (USGS) scientists produced a strategic plan for the acquisition, improvement and modernization of multidisciplinary sets of data to support the growth of the Mauritanian minerals sector and to highlight the geological and mineral exploration potential of the country. In 1999...
Authors
Cliff D. Taylor, John D. Horton
Permissive tracts for algoma-, superior-, and oolitic-type iron deposits in Mauritania (phase V, deliverable 82): Chapter O1 in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II) Permissive tracts for algoma-, superior-, and oolitic-type iron deposits in Mauritania (phase V, deliverable 82): Chapter O1 in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II)
In 1996, at the request of the Government of the Islamic Republic of Mauritania, a team of U.S. Geological Survey (USGS) scientists produced a strategic plan for the acquisition, improvement and modernization of multidisciplinary sets of data to support the growth of the Mauritanian minerals sector and to highlight the geological and mineral exploration potential of the country. In 1999...
Authors
Cliff D. Taylor, John D. Horton
Geology, geochemistry, and genesis of the Greens Creek massive sulfide deposit, Admiralty Island, southeastern Alaska Geology, geochemistry, and genesis of the Greens Creek massive sulfide deposit, Admiralty Island, southeastern Alaska
In 1996, a memorandum of understanding was signed by representatives of the U.S. Geological Survey and Kennecott Greens Creek Mining Company to initiate a cooperative applied research project focused on the Greens Creek massive sulfide deposit in southeastern Alaska. The goals of the project were consistent with the mandate of the U.S. Geological Survey Mineral Resources Program to...
Authors
Cliff D. Taylor, Craig A. Johnson
Gold deposit styles and placer gold characterisation in northern and east-central Madagascar Gold deposit styles and placer gold characterisation in northern and east-central Madagascar
Microchemical characterisation of bedrock and placer gold grains from six gold districts within the Archaean domains and intervening Neoproterozoic Anaboriana-Manampotsy belt of northern and east-central Madagascar show few opaque inclusions (e.g pyrrhotite, Bi tellurides) but wide range of Ag contents (40wt%). Some districts exhibit multiple source populations of grains. The...
Authors
Peter E. J Pitfield, Michael T. Styles, Cliff D. Taylor, Roger M. Key, Wilfried Bauer, A Vonimanitra Ralison
Geology and Nonfuel Mineral Deposits of Africa and the Middle East Geology and Nonfuel Mineral Deposits of Africa and the Middle East
A nation's endowment of nonfuel mineral resources, relative to the world's endowment, is a fundamental consideration in decisions related to a nation's economic and environmental well being and security. Knowledge of the worldwide abundance, distribution, and general geologic setting of mineral commodities provides a framework within which a nation can make decisions about economic...
Authors
Cliff D. Taylor, Klaus J. Schulz, Jeff L. Doebrich, Greta Orris, Paul Denning, Michael J. Kirschbaum
Rates of zinc and trace metal release from dissolving sphalerite at pH 2.0-4.0 Rates of zinc and trace metal release from dissolving sphalerite at pH 2.0-4.0
High-Fe and low-Fe sphalerite samples were reacted under controlled pH conditions to determine nonoxidative rates of release of Zn and trace metals from the solid-phase. The release (solubilization) of trace metals from dissolving sphalerite to the aqueous phase can be characterized by a kinetic distribution coefficient, (Dtr), which is defined as [(Rtr/X(tr)Sph)/(RZn/X(Zn) Sph)], where...
Authors
M.R. Stanton, P. A. Gemery-Hill, Wayne C. Shanks, C. D. Taylor
The metallogeny of Late Triassic rifting of the Alexander terrane in southeastern Alaska and northwestern British Columbia The metallogeny of Late Triassic rifting of the Alexander terrane in southeastern Alaska and northwestern British Columbia
A belt of unusual volcanogenic massive sulfide (VMS) occurrences is located along the eastern margin of the Alexander terrane throughout southeastern Alaska and northwestern British Columbia and exhibits a range of characteristics consistent with a variety of syngenetic to epigenetic deposit types. Deposits within this belt include Greens Creek and Windy Craggy, the economically most...
Authors
C. D. Taylor, W. R. Premo, A. L. Meier, J.E. Taggart
Descriptions of mineral occurrences and interpretation of mineralized rock geochemical data in the Stikine geophysical survey area, Southeastern Alaska Descriptions of mineral occurrences and interpretation of mineralized rock geochemical data in the Stikine geophysical survey area, Southeastern Alaska
Detailed descriptions of some of the more significant mineral occurrences in the Stikine Airborne Geophysical Survey Project Area are presented based upon site-specific examinations by the U.S. Geological Survey in May of 1998. Reconnaissance geochemical data on unmineralized igneous and sedimentary host rocks, and mineralized rocks are also presented and are accompanied by a brief...
Authors
Cliff D. Taylor
Petrogenesis of late-stage granites and Y-REE-Zr-Nb-enriched vein dikes of the Bokan Mountain stock, Prince of Wales Island, southeastern Alaska Petrogenesis of late-stage granites and Y-REE-Zr-Nb-enriched vein dikes of the Bokan Mountain stock, Prince of Wales Island, southeastern Alaska
No abstract available.
Authors
J.A. Philpotts, C. D. Taylor, Mitsumoto Tatsumoto, H. E. Belkin