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Volume 126, Number 7-8

7/8 2014

ISSN 0016-7606

EISSN 1943-2674

Pyroclastic edifices record vigorous lava fountains during the emplacement of a flood basalt flow field, Roza Member, Columbia River Basalt Province, USA

Richard J. Brown; S. Blake; T. Thordarson; S. Self

Abstract

View articletitled, Pyroclastic edifices record vigorous lava fountains during the emplacement of a flood basalt flow field, Roza Member, Columbia River Basalt Province, USA

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GSA Bulletin July 01, 2014, Vol.126, 875-891. doi:https://doi.org/10.1130/B30857.1

Switch from thrusting to normal shearing in the Zanskar shear zone, NW Himalaya: Implications for channel flow

Melanie Finch; Pavlína Hasalová; Roberto F. Weinberg; C. Mark Fanning

Abstract

View articletitled, Switch from thrusting to normal shearing in the Zanskar shear zone, NW Himalaya: Implications for channel flow

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GSA Bulletin July 01, 2014, Vol.126, 892-924. doi:https://doi.org/10.1130/B30817.1

Knickpoint formation, rapid propagation, and landscape response following coastal cliff retreat at the last interglacial sea-level highstand: Kaua‘i, Hawai‘i

Benjamin H. Mackey; Joel S. Scheingross; Michael P. Lamb; Kenneth A. Farley

Abstract

View articletitled, Knickpoint formation, rapid propagation, and landscape response following coastal cliff retreat at the last interglacial sea-level highstand: Kaua‘i, Hawai‘i

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GSA Bulletin July 01, 2014, Vol.126, 925-942. doi:https://doi.org/10.1130/B30930.1

Analogue modeling of positive inversion tectonics along differently oriented pre-thrusting normal faults: An application to the Central-Northern Apennines of Italy

Alessandra Di Domenica; Lorenzo Bonini; Fernando Calamita; Giovanni Toscani; Carla Galuppo; Silvio Seno

Abstract

View articletitled, Analogue modeling of positive inversion tectonics along differently oriented pre-thrusting normal faults: An application to the Central-Northern Apennines of Italy

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GSA Bulletin July 01, 2014, Vol.126, 943-955. doi:https://doi.org/10.1130/B31001.1

Integrating ⁴⁰Ar/³⁹Ar, U-Pb, and astronomical clocks in the Cretaceous Niobrara Formation, Western Interior Basin, USA

Bradley B. Sageman; Brad S. Singer; Stephen R. Meyers; Sarah E. Siewert; Ireneusz Walaszczyk; Daniel J. Condon; Brian R. Jicha; John D. Obradovich; David A. Sawyer

Abstract

View articletitled, Integrating 40Ar/39Ar, U-Pb, and astronomical clocks in the Cretaceous Niobrara Formation, Western Interior Basin, USA

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GSA Bulletin July 01, 2014, Vol.126, 956-973. doi:https://doi.org/10.1130/B30929.1

Testing the astronomical time scale for oceanic anoxic event 2, and its extension into Cenomanian strata of the Western Interior Basin (USA)

Chao Ma; Stephen R. Meyers; Brad B. Sageman; Brad S. Singer; Brian R. Jicha

Abstract

View articletitled, Testing the astronomical time scale for oceanic anoxic event 2, and its extension into Cenomanian strata of the Western Interior Basin (USA)

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GSA Bulletin July 01, 2014, Vol.126, 974-989. doi:https://doi.org/10.1130/B30922.1

Early to Middle Ordovician back-arc basin in the southern Appalachian Blue Ridge: Characteristics, extent, and tectonic significance

James Tull; Christopher S. Holm-Denoma; Clinton I. Barineau

Abstract

View articletitled, Early to Middle Ordovician back-arc basin in the southern Appalachian Blue Ridge: Characteristics, extent, and tectonic significance

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GSA Bulletin July 01, 2014, Vol.126, 990-1015. doi:https://doi.org/10.1130/B30967.1

Landscape modification in response to repeated onset of hyperarid paleoclimate states since 14 Ma, Atacama Desert, Chile

Teresa E. Jordan; Naomi E. Kirk-Lawlor; Nicolás P. Blanco; Jason A. Rech; Nicolás J. Cosentino

Abstract

View articletitled, Landscape modification in response to repeated onset of hyperarid paleoclimate states since 14 Ma, Atacama Desert, Chile

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GSA Bulletin July 01, 2014, Vol.126, 1016-1046. doi:https://doi.org/10.1130/B30978.1

Mid-Miocene rhyolite volcanism in northeastern Nevada: The Jarbidge Rhyolite and its relationship to the Cenozoic evolution of the northern Great Basin (USA)

Matthew E. Brueseke; Jeffrey S. Callicoat; Willis Hames; Peter B. Larson

Abstract

View articletitled, Mid-Miocene rhyolite volcanism in northeastern Nevada: The Jarbidge Rhyolite and its relationship to the Cenozoic evolution of the northern Great Basin (USA)

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GSA Bulletin July 01, 2014, Vol.126, 1047-1067. doi:https://doi.org/10.1130/B30736.1

Magnetic polarity stratigraphy and palynostratigraphy of the Mississippian-Pennsylvanian boundary interval in eastern North America and the age of the beginning of the Kiaman

N.D. Opdyke; P.S. Giles; J. Utting

Abstract

View articletitled, Magnetic polarity stratigraphy and palynostratigraphy of the Mississippian-Pennsylvanian boundary interval in eastern North America and the age of the beginning of the Kiaman

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GSA Bulletin July 01, 2014, Vol.126, 1068-1083. doi:https://doi.org/10.1130/B30953.1

Heat-flow data in the Four Corners area suggest Neogene crustal warming resulting from partial lithosphere replacement in the Colorado Plateau interior, southwest USA

Marshall Reiter

Abstract

View articletitled, Heat-flow data in the Four Corners area suggest Neogene crustal warming resulting from partial lithosphere replacement in the Colorado Plateau interior, southwest USA

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GSA Bulletin July 01, 2014, Vol.126, 1084-1092. doi:https://doi.org/10.1130/B30951.1

Catastrophic rock avalanches in a glaciated valley of the High Atlas, Morocco: ¹⁰Be exposure ages reveal a 4.5 ka seismic event

Philip D. Hughes; David Fink; William J. Fletcher; George Hannah

Abstract

View articletitled, Catastrophic rock avalanches in a glaciated valley of the High Atlas, Morocco: 10Be exposure ages reveal a 4.5 ka seismic event

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GSA Bulletin July 01, 2014, Vol.126, 1093-1104. doi:https://doi.org/10.1130/B30894.1

Multiproxy approach reveals evidence of highly variable paleoprecipitation in the Upper Jurassic Morrison Formation (western United States)

Timothy S. Myers; Neil J. Tabor; Nicholas A. Rosenau

Abstract

View articletitled, Multiproxy approach reveals evidence of highly variable paleoprecipitation in the Upper Jurassic Morrison Formation (western United States)

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GSA Bulletin July 01, 2014, Vol.126, 1105-1116. doi:https://doi.org/10.1130/B30941.1

Detrital zircon geochronology of the Grenville/Llano foreland and basal Sauk Sequence in west Texas, USA

Christopher J. Spencer; Anthony R. Prave; Peter A. Cawood; Nick M.W. Roberts

Abstract

View articletitled, Detrital zircon geochronology of the Grenville/Llano foreland and basal Sauk Sequence in west Texas, USA

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GSA Bulletin July 01, 2014, Vol.126, 1117-1128. doi:https://doi.org/10.1130/B30884.1

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Late orogenic high-temperature overprint in (ultra)high-pressure ([U]HP) metamorphic rocks of the North Qinling Orogen, Central China: Insights into the geodynamics of the exhumation of (U)HP metamorphic rocks

New paleomagnetic and geochronologic results from late Paleozoic rocks in the Turfan-Hami block (NW China) and implications for the geodynamic evolution of the western Altaids

Resolving complex stratigraphic architecture across the Burlington shelf and identifying the Devonian-Carboniferous (Hangenberg) and Kinderhookian-Osagean (Tournaisian) boundary biogeochemical events in the type area of the Mississippian subsystem

Tracing the crustal evolution of the Precambrian Southern Granulite terrane in East Gondwana: New insights from zircon U-Pb/Hf geochronology

Influence of multistage hydrothermal fluids on dolomite reservoirs: A case study from the Lower Ordovician Yeli-Liangjiashan Formation in the Chengdao-Zhuanghai area, Jiyang subbasin, Bohai Bay Basin, China

Pyroclastic edifices record vigorous lava fountains during the emplacement of a flood basalt flow field, Roza Member, Columbia River Basalt Province, USA

Switch from thrusting to normal shearing in the Zanskar shear zone, NW Himalaya: Implications for channel flow

Knickpoint formation, rapid propagation, and landscape response following coastal cliff retreat at the last interglacial sea-level highstand: Kaua‘i, Hawai‘i

Analogue modeling of positive inversion tectonics along differently oriented pre-thrusting normal faults: An application to the Central-Northern Apennines of Italy

Integrating ⁴⁰Ar/³⁹Ar, U-Pb, and astronomical clocks in the Cretaceous Niobrara Formation, Western Interior Basin, USA

Testing the astronomical time scale for oceanic anoxic event 2, and its extension into Cenomanian strata of the Western Interior Basin (USA)

Early to Middle Ordovician back-arc basin in the southern Appalachian Blue Ridge: Characteristics, extent, and tectonic significance

Landscape modification in response to repeated onset of hyperarid paleoclimate states since 14 Ma, Atacama Desert, Chile

Mid-Miocene rhyolite volcanism in northeastern Nevada: The Jarbidge Rhyolite and its relationship to the Cenozoic evolution of the northern Great Basin (USA)

Magnetic polarity stratigraphy and palynostratigraphy of the Mississippian-Pennsylvanian boundary interval in eastern North America and the age of the beginning of the Kiaman

Heat-flow data in the Four Corners area suggest Neogene crustal warming resulting from partial lithosphere replacement in the Colorado Plateau interior, southwest USA

Catastrophic rock avalanches in a glaciated valley of the High Atlas, Morocco: ¹⁰Be exposure ages reveal a 4.5 ka seismic event

Multiproxy approach reveals evidence of highly variable paleoprecipitation in the Upper Jurassic Morrison Formation (western United States)

Detrital zircon geochronology of the Grenville/Llano foreland and basal Sauk Sequence in west Texas, USA

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