Wayne Premo
Wayne Premo is a Scientist Emeritus with the Geosciences and Environmental Change Science Center
Hired by the US Geological Survey in 1984, he worked first as the laboratory manager for Dr Mitsunobu Tatsumoto under the Upper Mantle Research Project within the USGS. At that time, he oversaw the work of many post-doc visitors to Tatsumoto's laboratories including Patrick E Smith (Toronto, Canada), Yoichi Nakamura (Utsunomiya, Japan), Jun-wen Wang (Guanghou, China), Asish Basu (U Rochester NY), Keiji Misawa (Kobe, NIPR, Tokyo, Japan), Marc Brouxel (Metz, France), C. Mark Fanning (ANU, Canberra, Australia), Holly Stein (Colorado State U), Noriko Kita (U Wisconsin) among others. Subsequently he did his first research on a variety of lunar samples, investigating the various Pb isotopic components of Moon rocks and later meteorites. He was promoted to research grade in 1993, continuing to work on lunar samples for the next 4 years, but adding terrestrial research to the palette. Among the many projects he was involved in over the next 20 years, a few standout: U-Pb zircon geochronology and Pb-Sr-Nd isotopic work on the Peninsular Ranges batholith, southern California; Age and origin of the Greens Creek Mine, Admiralty Island, Alaska; Pb-Sr studies of the MVT ore deposits of the Cevennes Region, southern France, U-Pb zircon geochronology and Pb-Sr-Nd isotopic work of the Proterozoic Colorado Province; and Age and origin of the Mountain Pass REE deposit, southern California.
Education and Certifications
1984 - University of Kansas, Lawrence - Master's Degree - Geology
1977 - University of Colorado, Boulder - undergraduate degree
Science and Products
Filter Total Items: 67
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 significant V
Authors
C. D. Taylor, W. R. Premo, A. L. Meier, J.E. Taggart
New SHRIMP-RG U-Pb zircon ages and Sm-Nd analyses of Proterozoic metamorphic rocks of the San Gabriel basement terrane: Keys for Laurentian crustal reconstruction
No abstract available.
Authors
Wayne R. Premo, Jonathan A. Nourse, Pedro Castineiras, Karl S. Kellogg
Tectonic setting and metallogenesis of volcanogenic massive sulfide deposits in the Bonnifield Mining District, Northern Alaska Range: Chapter B in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Ca
This paper summarizes the results of field and laboratory investigations, including whole-rock geochemistry and
radiogenic isotopes, of outcrop and drill core samples from
volcanogenic massive sulfide (VMS) deposits and associated
metaigneous rocks in the Wood River area of the Bonnifield
mining district, northern Alaska Range (see fig. 1 of Editors’
Preface and Overview). U-Pb zircon igneous
Authors
Cynthia Dusel-Bacon, John N. Aleinikoff, Wayne R. Premo, Suzanne Paradis, Ilana Lohr-Schmidt
New insights into the history and origin of the southern Maya block, SE Mexico: U-Pb-SHRIMP zircon geochronology from metamorphic rocks of the Chiapas massif
The histories of the pre-Mesozoic landmasses in southern México and their connections with Laurentia, Gondwana, and among themselves are crucial for the understanding of the Late Paleozoic assembly of Pangea. The Permian igneous and metamorphic rocks from the Chiapas massif as part of the southern Maya block, México, were dated by U–Pb zircon geochronology employing the SHRIMP (sensitive high reso
Authors
Bodo Weber, Alexander Iriondo, Wayne R. Premo, Lutz Hecht, Peter Schaaf
Precipitation of lead-zinc ores in the Mississippi Valley-type deposit at Treves, Cevennes region of southern France
The Trèves zinc–lead deposit is one of several Mississippi Valley-type (MVT) deposits in the Cévennes region of southern France. Fluid inclusion studies show that the ore was deposited at temperatures between approximately 80 and 150°C from a brine that derived its salinity mainly from the evaporation of seawater past halite saturation. Lead isotope studies suggest that the metals were extracted f
Authors
D. Leach, J.-C. Macquar, V. Lagneau, J. Leventhal, P. Emsbo, W. Premo
Sm-Nd isotopic systematics of lherzolitic shergottite Yamato-793605
We have undertaken Sm-Nd isotopic studies on Yamato-793605 lherzolitic shergottite. The Sm-Nd internal isochron obtained for acid leachates and residues of whole-rock and separated mineral fractions yields an age of 185 ??16 Ma with an initial ??Nd value of +9.7??0.2. The obtained Sm-Nd age is, within analytical errors, identical to the Rb-Sr age of this meteorite as well as to the previous Rb-Sr
Authors
Keiji Misawa, K. Yamada, N. Nakamura, N. Morikawa, K. Yamashita, W. R. Premo
Contrasting Proterozoic basement complexes near the truncated margin of Laurentia, northwestern Sonora–Arizona international border region
We utilize new geological mapping, conventional isotope dilution–thermal ionization mass spectrometry (ID-TIMS) and sensitive high-resolution ion microprobe (SHRIMP) U-Pb zircon analyses, and whole-rock radiogenic isotope characteristics to distinguish two contrasting Proterozoic basement complexes in the international border region southeast of Yuma, Arizona. Strategically located near the trunca
Authors
Jonathan A. Nourse, Wayne R. Premo, Alexander Iriondo, Eric R. Stahl
Isotopic dating of Meso- and Neoproterozoic mafic magmatism in the southern Tobacco Root Mountains, Southwestern Montana
New isotopic dating of mafic dikes in the southern Tobacco Root Mountains of southwestern Montana provides evidence for two distinct episodes of subparallel Proterozoic mafic magmatism separated by about 700 m.y. Previously published geochemical data from dikes in the southern Tobacco Root Mountains had identified three geochemical groups (termed groups A, B, and C) with apparent Rb–Sr ages of 145
Authors
Stephen S. Harlan, Wayne R. Premo, D. Unruh, J. W. Geissman
Sm-Nd dating of fluorite from the worldclass Montroc fluorite deposit, southern Massif Central, France
A three-point Sm-Nd isotope isochron on fluorite from the very large Montroc fluorite vein deposit (southern Massif Central, France) defines an age of 111??13 Ma. Initial ??Nd of -8.6 and initial 87Sr/86Sr of ???0.71245 suggest an upper crustal source of the hydrothermal system, in agreement with earlier work on fluid inclusions which indicated a basinal brine origin. The mid-Cretaceous age of ???
Authors
M. Munoz, W. R. Premo, P. Courjault-Rade
Northward laramide thrusting in the quitovac region, northwestern sonora, mexico: Implications for the juxtaposition of paleoproterozoic basement blocks and the mojave-sonora megashear hypothesis
Restoration of 12%–30% Basin and Range extension allows direct interpretation of ductile fabrics associated with a stack of Laramide thrust faults in the Quitovac region in northwestern Sonora. The inferred direction of displacement of these thrusts varies gradually from N63°W to N23°E and is interpreted to represent a clockwise rotation of the direction of Laramide thrusting through time. The thr
Authors
Alexander Iriondo, Luis M. Martínez-Torres, Michael J. Kunk, William W. Atkinson, Wayne R. Premo, William C. McIntosh
Reply to discussion on “Tectonic controls of Mississippi Valley-type lead–zinc mineralization in orogenic forelands”
Bradley and Leach (2003) focused on the tectonics of a subset of Mississippi Valley-type (MVT) lead–zinc deposits. Age assignments followed those given in a review of MVT deposits worldwide (Leach et al. 2001)—a paper that provoked a discussion by Kesler and Carrigan (2002) and reply by Leach et al. (2002), similar to the present exchange. While the new discussion by Kesler et al. (2004) does addr
Authors
Dwight C. Bradley, David L. Leach, David Symons, Poul Emsbo, Wayne R. Premo, George N. Breit, D. F. Sangster
Isotopic, geochemical, and temporal characterization of Proterozoic basement rocks in the Quitovac region, northwestern Sonora, Mexico: Implications for the reconstruction of the southwestern margin of Laurentia
A detailed geochemical characterization of 19 representative Proterozoic basement rocks in the Quitovac region in northwestern Sonora, Mexico, has identified two distinct Paleoproterozoic basement blocks that coincide spatially with the previously proposed Caborca and "North America" blocks. New U-Pb zircon geochronology revises their age ranges, the Caborca (1.78-1.69 Ga) and "North America" (1.7
Authors
A. Iriondo, W. R. Premo, Luis M. Martínez-Torres, J. R. Budahn, William W. Atkinson, D. F. Siems, B. Guaras-Gonzalez
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Filter Total Items: 67
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 significant VAuthorsC. D. Taylor, W. R. Premo, A. L. Meier, J.E. TaggartNew SHRIMP-RG U-Pb zircon ages and Sm-Nd analyses of Proterozoic metamorphic rocks of the San Gabriel basement terrane: Keys for Laurentian crustal reconstruction
No abstract available.AuthorsWayne R. Premo, Jonathan A. Nourse, Pedro Castineiras, Karl S. KelloggTectonic setting and metallogenesis of volcanogenic massive sulfide deposits in the Bonnifield Mining District, Northern Alaska Range: Chapter B in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Ca
This paper summarizes the results of field and laboratory investigations, including whole-rock geochemistry and radiogenic isotopes, of outcrop and drill core samples from volcanogenic massive sulfide (VMS) deposits and associated metaigneous rocks in the Wood River area of the Bonnifield mining district, northern Alaska Range (see fig. 1 of Editors’ Preface and Overview). U-Pb zircon igneousAuthorsCynthia Dusel-Bacon, John N. Aleinikoff, Wayne R. Premo, Suzanne Paradis, Ilana Lohr-SchmidtNew insights into the history and origin of the southern Maya block, SE Mexico: U-Pb-SHRIMP zircon geochronology from metamorphic rocks of the Chiapas massif
The histories of the pre-Mesozoic landmasses in southern México and their connections with Laurentia, Gondwana, and among themselves are crucial for the understanding of the Late Paleozoic assembly of Pangea. The Permian igneous and metamorphic rocks from the Chiapas massif as part of the southern Maya block, México, were dated by U–Pb zircon geochronology employing the SHRIMP (sensitive high resoAuthorsBodo Weber, Alexander Iriondo, Wayne R. Premo, Lutz Hecht, Peter SchaafPrecipitation of lead-zinc ores in the Mississippi Valley-type deposit at Treves, Cevennes region of southern France
The Trèves zinc–lead deposit is one of several Mississippi Valley-type (MVT) deposits in the Cévennes region of southern France. Fluid inclusion studies show that the ore was deposited at temperatures between approximately 80 and 150°C from a brine that derived its salinity mainly from the evaporation of seawater past halite saturation. Lead isotope studies suggest that the metals were extracted fAuthorsD. Leach, J.-C. Macquar, V. Lagneau, J. Leventhal, P. Emsbo, W. PremoSm-Nd isotopic systematics of lherzolitic shergottite Yamato-793605
We have undertaken Sm-Nd isotopic studies on Yamato-793605 lherzolitic shergottite. The Sm-Nd internal isochron obtained for acid leachates and residues of whole-rock and separated mineral fractions yields an age of 185 ??16 Ma with an initial ??Nd value of +9.7??0.2. The obtained Sm-Nd age is, within analytical errors, identical to the Rb-Sr age of this meteorite as well as to the previous Rb-SrAuthorsKeiji Misawa, K. Yamada, N. Nakamura, N. Morikawa, K. Yamashita, W. R. PremoContrasting Proterozoic basement complexes near the truncated margin of Laurentia, northwestern Sonora–Arizona international border region
We utilize new geological mapping, conventional isotope dilution–thermal ionization mass spectrometry (ID-TIMS) and sensitive high-resolution ion microprobe (SHRIMP) U-Pb zircon analyses, and whole-rock radiogenic isotope characteristics to distinguish two contrasting Proterozoic basement complexes in the international border region southeast of Yuma, Arizona. Strategically located near the truncaAuthorsJonathan A. Nourse, Wayne R. Premo, Alexander Iriondo, Eric R. StahlIsotopic dating of Meso- and Neoproterozoic mafic magmatism in the southern Tobacco Root Mountains, Southwestern Montana
New isotopic dating of mafic dikes in the southern Tobacco Root Mountains of southwestern Montana provides evidence for two distinct episodes of subparallel Proterozoic mafic magmatism separated by about 700 m.y. Previously published geochemical data from dikes in the southern Tobacco Root Mountains had identified three geochemical groups (termed groups A, B, and C) with apparent Rb–Sr ages of 145AuthorsStephen S. Harlan, Wayne R. Premo, D. Unruh, J. W. GeissmanSm-Nd dating of fluorite from the worldclass Montroc fluorite deposit, southern Massif Central, France
A three-point Sm-Nd isotope isochron on fluorite from the very large Montroc fluorite vein deposit (southern Massif Central, France) defines an age of 111??13 Ma. Initial ??Nd of -8.6 and initial 87Sr/86Sr of ???0.71245 suggest an upper crustal source of the hydrothermal system, in agreement with earlier work on fluid inclusions which indicated a basinal brine origin. The mid-Cretaceous age of ???AuthorsM. Munoz, W. R. Premo, P. Courjault-RadeNorthward laramide thrusting in the quitovac region, northwestern sonora, mexico: Implications for the juxtaposition of paleoproterozoic basement blocks and the mojave-sonora megashear hypothesis
Restoration of 12%–30% Basin and Range extension allows direct interpretation of ductile fabrics associated with a stack of Laramide thrust faults in the Quitovac region in northwestern Sonora. The inferred direction of displacement of these thrusts varies gradually from N63°W to N23°E and is interpreted to represent a clockwise rotation of the direction of Laramide thrusting through time. The thrAuthorsAlexander Iriondo, Luis M. Martínez-Torres, Michael J. Kunk, William W. Atkinson, Wayne R. Premo, William C. McIntoshReply to discussion on “Tectonic controls of Mississippi Valley-type lead–zinc mineralization in orogenic forelands”
Bradley and Leach (2003) focused on the tectonics of a subset of Mississippi Valley-type (MVT) lead–zinc deposits. Age assignments followed those given in a review of MVT deposits worldwide (Leach et al. 2001)—a paper that provoked a discussion by Kesler and Carrigan (2002) and reply by Leach et al. (2002), similar to the present exchange. While the new discussion by Kesler et al. (2004) does addrAuthorsDwight C. Bradley, David L. Leach, David Symons, Poul Emsbo, Wayne R. Premo, George N. Breit, D. F. SangsterIsotopic, geochemical, and temporal characterization of Proterozoic basement rocks in the Quitovac region, northwestern Sonora, Mexico: Implications for the reconstruction of the southwestern margin of Laurentia
A detailed geochemical characterization of 19 representative Proterozoic basement rocks in the Quitovac region in northwestern Sonora, Mexico, has identified two distinct Paleoproterozoic basement blocks that coincide spatially with the previously proposed Caborca and "North America" blocks. New U-Pb zircon geochronology revises their age ranges, the Caborca (1.78-1.69 Ga) and "North America" (1.7AuthorsA. Iriondo, W. R. Premo, Luis M. Martínez-Torres, J. R. Budahn, William W. Atkinson, D. F. Siems, B. Guaras-Gonzalez