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all geography including DSDP/ODP Sites and Legs
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Africa
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Southern Africa
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Kaapvaal Craton (1)
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South Africa (1)
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Cascade Range (1)
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Central America
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Guatemala
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Santiaguito (1)
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Mount Adams (1)
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North America
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Rio Grande Rift (1)
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Rocky Mountains
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South America
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United States
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California
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Colorado
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Washington
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elements, isotopes
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stable isotopes
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C-13/C-12 (2)
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Fe-56 (1)
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O-18/O-16 (3)
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metals
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actinides
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U-238/Th-230 (1)
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uranium
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U-238/Th-230 (1)
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alkali metals
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rubidium
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Rb-87/Sr-86 (1)
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alkaline earth metals
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strontium
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Rb-87/Sr-86 (1)
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Sr-87/Sr-86 (4)
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iron
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Fe-56 (1)
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lead
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Pb-206/Pb-204 (1)
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platinum group
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osmium
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Os-188/Os-187 (1)
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rare earths
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neodymium
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noble gases
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argon
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Ar-40 (1)
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oxygen
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Mesozoic
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igneous rocks
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minerals
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carbonates
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silicates
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framework silicates
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orthosilicates
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sheet silicates
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mica group
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biotite (1)
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Primary terms
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absolute age (3)
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Africa
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Southern Africa
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Kaapvaal Craton (1)
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South Africa (1)
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atmosphere (1)
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carbon
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C-13/C-12 (2)
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Cenozoic
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Quaternary
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Holocene (1)
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Tertiary
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Paleogene
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Eocene
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Green River Formation (2)
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Lake Gosiute (2)
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middle Eocene
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Laney Shale Member (2)
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Oligocene (1)
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Central America
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Guatemala
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Santiaguito (1)
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crust (3)
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data processing (1)
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igneous rocks
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volcanic rocks
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andesites (1)
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basalts (2)
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pyroclastics
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ash-flow tuff (2)
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intrusions (1)
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isotopes
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radioactive isotopes
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Pb-206/Pb-204 (1)
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Rb-87/Sr-86 (1)
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U-238/Th-230 (1)
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stable isotopes
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Ar-40 (1)
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C-13/C-12 (2)
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Fe-56 (1)
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Nd-144/Nd-143 (1)
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O-18/O-16 (3)
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Os-188/Os-187 (1)
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Pb-206/Pb-204 (1)
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Rb-87/Sr-86 (1)
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Sr-87/Sr-86 (4)
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lava (3)
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magmas (3)
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mantle (1)
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Mesozoic
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Cretaceous
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Upper Cretaceous (1)
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metals
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actinides
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thorium
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U-238/Th-230 (1)
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uranium
-
U-238/Th-230 (1)
-
-
-
alkali metals
-
rubidium
-
Rb-87/Sr-86 (1)
-
-
-
alkaline earth metals
-
strontium
-
Rb-87/Sr-86 (1)
-
Sr-87/Sr-86 (4)
-
-
-
iron
-
Fe-56 (1)
-
-
lead
-
Pb-206/Pb-204 (1)
-
-
platinum group
-
osmium
-
Os-188/Os-187 (1)
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-
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (1)
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-
-
-
noble gases
-
argon
-
Ar-40 (1)
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-
-
North America
-
Rio Grande Rift (1)
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Rocky Mountains
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U. S. Rocky Mountains
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San Juan Mountains (1)
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-
-
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oxygen
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O-18/O-16 (3)
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paleoclimatology (1)
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paleogeography (3)
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Phanerozoic (1)
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plate tectonics (1)
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Precambrian
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Archean
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Neoarchean (1)
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upper Precambrian
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Proterozoic (1)
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sea water (1)
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sedimentary rocks
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carbonate rocks
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limestone
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micrite (1)
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clastic rocks
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conglomerate (1)
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mudstone (1)
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sandstone (1)
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shale (1)
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sedimentary structures
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biogenic structures
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stromatolites (1)
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planar bedding structures
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laminations (1)
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South America
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Andes (1)
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tectonics (1)
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United States
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Albuquerque Basin (1)
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California
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Mendocino County California (1)
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Northern California (1)
-
Salinian Block (1)
-
-
Colorado
-
Conejos County Colorado (1)
-
Hinsdale County Colorado (1)
-
Mineral County Colorado (1)
-
San Juan volcanic field (1)
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San Miguel County Colorado (1)
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Idaho (1)
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New Mexico (1)
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U. S. Rocky Mountains
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San Juan Mountains (1)
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Washington
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Yakima County Washington (1)
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Western U.S. (2)
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Wyoming
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Sweetwater County Wyoming (1)
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volcanology (1)
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weathering (2)
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sedimentary rocks
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sedimentary rocks
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carbonate rocks
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limestone
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micrite (1)
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clastic rocks
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conglomerate (1)
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mudstone (1)
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sandstone (1)
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shale (1)
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sedimentary structures
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sedimentary structures
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biogenic structures
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stromatolites (1)
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planar bedding structures
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laminations (1)
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Clark M. Johnson
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Journal Article
Tectonic controls on fault zone flow pathways in the Rio Grande rift, New Mexico, USA Available to Purchase
Publisher: Geological Society of America
Published: 01 August 2015
Geology (2015) 43 (8): 723–726.
Journal Article
Iron formation carbonates: Paleoceanographic proxy or recorder of microbial diagenesis? Available to Purchase
Publisher: Geological Society of America
Published: 01 November 2013
Geology (2013) 41 (11): 1147–1150.
Journal Article
Volcanic biotite-sanidine 40 Ar/ 39 Ar age discordances reflect Ar partitioning and pre-eruption closure in biotite Available to Purchase
John M. Hora, Brad S. Singer, Brian R. Jicha, Brian L. Beard, Clark M. Johnson, Shan de Silva, Morgan Salisbury
Publisher: Geological Society of America
Published: 01 October 2010
Geology (2010) 38 (10): 923–926.
Journal Article
Crustal assimilation no match for slab fluids beneath Volcán de Santa María, Guatemala Available to Purchase
Publisher: Geological Society of America
Published: 01 September 2010
Geology (2010) 38 (9): 859–862.
Journal Article
Capture of high-altitude precipitation by a low-altitude Eocene lake, western U.S. Available to Purchase
Alan R. Carroll, Amalia C. Doebbert, Amanda L. Booth, C. Page Chamberlain, Meredith K. Rhodes-Carson, M. Elliot Smith, Clark M. Johnson, Brian L. Beard
Publisher: Geological Society of America
Published: 01 October 2008
Geology (2008) 36 (10): 791–794.
Journal Article
Iron isotope constraints on Fe cycling and mass balance in oxygenated Earth oceans Available to Purchase
Publisher: Geological Society of America
Published: 01 July 2003
Geology (2003) 31 (7): 629–632.
Journal Article
New osmium isotope evidence for intracrustal recycling of crustal domains with discrete ages Available to Purchase
Publisher: Geological Society of America
Published: 01 May 2003
Geology (2003) 31 (5): 427–430.
Journal Article
Strontium isotope record of paleohydrology and continental weathering, Eocene Green River Formation, Wyoming Available to Purchase
Publisher: Geological Society of America
Published: 01 February 2002
Geology (2002) 30 (2): 167–170.
Journal Article
Sedimentary record of the Late Cretaceous thrusting and collapse of the Salinia-Mojave magmatic arc Available to Purchase
Publisher: Geological Society of America
Published: 01 April 1998
Geology (1998) 26 (4): 327–330.
Journal Article
Nd- and Pb-isotope variations in the multicyclic central caldera cluster of the San Juan volcanic field, Colorado, and implications for crustal hybridization Available to Purchase
Publisher: Geological Society of America
Published: 01 October 1990
Geology (1990) 18 (10): 975–978.
Journal Article
Isotopic zonations in silicic magma chambers Available to Purchase
Publisher: Geological Society of America
Published: 01 December 1989
Geology (1989) 17 (12): 1136–1139.