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Volume 41, Number 2
February 2013
Issue Cover
ISSN: 0091-7613
EISSN: 1943-2682
In this Issue
Banded iron formation to iron ore: A record of the evolution of Earth environments?
K.A. Evans; T.C. McCuaig; D. Leach; T. Angerer; S.G. Hagemann
View articletitled, Banded iron formation to iron ore: A record of the evolution of Earth environments?
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Lipid taphonomy in the Proterozoic and the effect of microbial mats on biomarker preservation
Maria M. Pawlowska; Nicholas J. Butterfield; Jochen J. Brocks
View articletitled, Lipid taphonomy in the Proterozoic and the effect of microbial mats on biomarker preservation
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Precisely locating the Ordovician equator in Laurentia
Jisuo Jin; David A.T. Harper; L. Robin M. Cocks; Phil J.A. McCausland; Christian M.Ø. Rasmussen; Peter M. Sheehan
View articletitled, Precisely locating the Ordovician equator in Laurentia
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Deciphering high-pressure metamorphism in collisional context using microprobe mapping methods: Application to the Stak eclogitic massif (northwest Himalaya)
Pierre Lanari; Nicolas Riel; Stéphane Guillot; Olivier Vidal; Stéphane Schwartz; Arnaud Pêcher; Keiko H. Hattori
View articletitled, Deciphering high-pressure metamorphism in collisional context using microprobe mapping methods: Application to the Stak eclogitic massif (northwest Himalaya)
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Recovering the composition of melt and the fluid regime at the onset of crustal anatexis and S-type granite formation
Omar Bartoli; Bernardo Cesare; Stefano Poli; Robert J. Bodnar; Antonio Acosta-Vigil; Maria Luce Frezzotti; Sandro Meli
View articletitled, Recovering the composition of melt and the fluid regime at the onset of crustal anatexis and S-type granite formation
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Determining gypsum growth temperatures using monophase fluid inclusions—Application to the giant gypsum crystals of Naica, Mexico
Yves Krüger; Juan Manuel García-Ruiz; Àngels Canals; Dominik Marti; Martin Frenz; Alexander E.S. Van Driessche
View articletitled, Determining gypsum growth temperatures using monophase fluid inclusions—Application to the giant gypsum crystals of Naica, Mexico
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Biomarkers reveal the role of photic zone euxinia in exceptional fossil preservation: An organic geochemical perspective
Ines Melendez; Kliti Grice; Kate Trinajstic; Mojgan Ladjavardi; Paul Greenwood; Katharine Thompson
View articletitled, Biomarkers reveal the role of photic zone euxinia in exceptional fossil preservation: An organic geochemical perspective
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Lipid biomarkers record fundamental changes in the microbial community structure of tropical seas during the Late Ordovician Hirnantian glaciation
Megan Rohrssen; Gordon D. Love; Woodward Fischer; Seth Finnegan; David A. Fike
View articletitled, Lipid biomarkers record fundamental changes in the microbial community structure of tropical seas during the Late Ordovician Hirnantian glaciation
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Variable history of Quaternary ice-sheet advance across the Beaufort Sea margin, Arctic Ocean
C.L. Batchelor; J.A. Dowdeswell; J.T. Pietras
View articletitled, Variable history of Quaternary ice-sheet advance across the Beaufort Sea margin, Arctic Ocean
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Copper, lead, and silver isotopes solve a major economic conundrum of Tudor and early Stuart Europe
Anne-Marie Desaulty; Francis Albarede
View articletitled, Copper, lead, and silver isotopes solve a major economic conundrum of Tudor and early Stuart Europe
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Shear heating during distributed fracturing and pulverization of rocks
Yehuda Ben-Zion; Charles G. Sammis
View articletitled, Shear heating during distributed fracturing and pulverization of rocks
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Shear heating during distributed fracturing and pulverization of rocks
Yehuda Ben-Zion; Charles G. Sammis
View articletitled, Shear heating during distributed fracturing and pulverization of rocks
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Small-scale turbidity currents in a big submarine canyon
J.P. Xu; James P. Barry; Charles K. Paull
View articletitled, Small-scale turbidity currents in a big submarine canyon
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Inferring sites of subglacial erosion using the Pb isotopic composition of ice-rafted feldspar: Examples from the Weddell Sea, Antarctica
M.J. Flowerdew; S. Tyrrell; V.L. Peck
View articletitled, Inferring sites of subglacial erosion using the Pb isotopic composition of ice-rafted feldspar: Examples from the Weddell Sea, Antarctica
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Lacustrine stable isotope record of precipitation changes in Nicaragua during the Little Ice Age and Medieval Climate Anomaly
Nathan D. Stansell; Byron A. Steinman; Mark B. Abbott; Michael Rubinov; Manuel Roman-Lacayo
View articletitled, Lacustrine stable isotope record of precipitation changes in Nicaragua during the Little Ice Age and Medieval Climate Anomaly
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Provenance of North Atlantic ice-rafted debris during the last deglaciation—A new application of U-Pb rutile and zircon geochronology
David Small; Randall R. Parrish; William E.N. Austin; Peter A. Cawood; Vincent Rinterknecht
View articletitled, Provenance of North Atlantic ice-rafted debris during the last deglaciation—A new application of U-Pb rutile and zircon geochronology
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Accelerated subglacial erosion in response to stick-slip motion
L.K. Zoet; R.B. Alley; S. Anandakrishnan; K. Christianson
View articletitled, Accelerated subglacial erosion in response to stick-slip motion
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Direct dating of gold by radiogenic helium: Testing the method on gold from Diamantina, Minas Gerais, Brazil
Alexandre Raphael Cabral; Otto Eugster; Michael Brauns; Bernd Lehmann; Delia Rösel; Thomas Zack; Francisco Robério de Abreu; Ernst Pernicka; Matthias Barth
View articletitled, Direct dating of gold by radiogenic helium: Testing the method on gold from Diamantina, Minas Gerais, Brazil
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Water mass denitrification during the latest Permian extinction in the Sverdrup Basin, Arctic Canada
Jochen Knies; Stephen E. Grasby; Benoit Beauchamp; Carsten J. Schubert
View articletitled, Water mass denitrification during the latest Permian extinction in the Sverdrup Basin, Arctic Canada
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Marine diversity in the geological record and its relationship to surviving bedrock area, lithofacies diversity, and original marine shelf area
Andrew B. Smith; Roger B.J. Benson
View articletitled, Marine diversity in the geological record and its relationship to surviving bedrock area, lithofacies diversity, and original marine shelf area
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Recurrent Early Triassic ocean anoxia
S.E. Grasby; B. Beauchamp; A. Embry; H. Sanei
View articletitled, Recurrent Early Triassic ocean anoxia
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Rapid Pliocene uplift of Timor
N. Nguyen; B. Duffy; J. Shulmeister; M. Quigley
View articletitled, Rapid Pliocene uplift of Timor
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Influence of the Galápagos hotspot on the East Pacific Rise during Miocene superfast spreading
J. Geldmacher; T.W. Höfig; F. Hauff; K. Hoernle; D. Garbe-Schönberg; D.S. Wilson
View articletitled, Influence of the Galápagos hotspot on the East Pacific Rise during Miocene superfast spreading
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Eocene extension in Idaho generated massive sediment floods into the Franciscan trench and into the Tyee, Great Valley, and Green River basins
Trevor A. Dumitru; W.G. Ernst; James E. Wright; Joseph L. Wooden; Ray E. Wells; Lucia P. Farmer; Adam J.R. Kent; Stephan A. Graham
View articletitled, Eocene extension in Idaho generated massive sediment floods into the Franciscan trench and into the Tyee, Great Valley, and Green River basins
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Earliest chitinozoans discovered in the Cambrian Duyun fauna of China
Cen Shen; Richard J. Aldridge; Mark Williams; Thijs R.A. Vandenbroucke; Xi-guang Zhang
View articletitled, Earliest chitinozoans discovered in the Cambrian Duyun fauna of China
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Slope and climate variability control of erosion in the Andes of central Chile
S. Carretier; V. Regard; R. Vassallo; G. Aguilar; J. Martinod; R. Riquelme; E. Pepin; R. Charrier; G. Hérail; M. Farías; J-L Guyot; G. Vargas; C. Lagane
View articletitled, Slope and climate variability control of erosion in the Andes of central Chile
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Drainage capture and discharge variations driven by glaciation in the Southern Alps, New Zealand
Ann V. Rowan; Mitchell A. Plummer; Simon H. Brocklehurst; Merren A. Jones; David M. Schultz
View articletitled, Drainage capture and discharge variations driven by glaciation in the Southern Alps, New Zealand
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Seismic reflection imaging of ultradeep roots beneath the eastern Aleutian island arc
Andrew J. Calvert; Susan E. McGeary
View articletitled, Seismic reflection imaging of ultradeep roots beneath the eastern Aleutian island arc
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Explosive eruptions triggered by rockfalls at Kīlauea volcano, Hawai‘i
Tim R. Orr; Weston A. Thelen; Matthew R. Patrick; Donald A. Swanson; David C. Wilson
View articletitled, Explosive eruptions triggered by rockfalls at Kīlauea volcano, Hawai‘i
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Reappraisal of the relationship between the northern Nevada rift and Miocene extension in the northern Basin and Range Province
Joseph P. Colgan
View articletitled, Reappraisal of the relationship between the northern Nevada rift and Miocene extension in the northern Basin and Range Province
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A microbial driver of chemical weathering in glaciated systems
Scott N. Montross; Mark Skidmore; Martyn Tranter; Anna-Liisa Kivimäki; R. John Parkes
View articletitled, A microbial driver of chemical weathering in glaciated systems
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An extensive and dynamic ice sheet on the West Greenland shelf during the last glacial cycle
C. Ó Cofaigh; J.A. Dowdeswell; A.E. Jennings; K.A. Hogan; A. Kilfeather; J.F. Hiemstra; R. Noormets; J. Evans; D.J. McCarthy; J.T. Andrews; J.M. Lloyd; M. Moros
View articletitled, An extensive and dynamic ice sheet on the West Greenland shelf during the last glacial cycle
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Detrital zircon as a proxy for tracking the magmatic arc system: The California arc example
A.P. Barth; J.L. Wooden; C.E. Jacobson; R.C. Economos
View articletitled, Detrital zircon as a proxy for tracking the magmatic arc system: The California arc example
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A detection of Milankovitch frequencies in global volcanic activity
Steffen. Kutterolf; Marion Jegen; Jerry X. Mitrovica; Tom Kwasnitschka; Armin Freundt; Peter J. Huybers
View articletitled, A detection of Milankovitch frequencies in global volcanic activity
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Extreme persistence of cratonic lithosphere in the southwest Pacific: Paleoproterozoic Os isotopic signatures in Zealandia
Alex J. McCoy-West; Vickie C. Bennett; Igor S. Puchtel; Richard J. Walker
View articletitled, Extreme persistence of cratonic lithosphere in the southwest Pacific: Paleoproterozoic Os isotopic signatures in Zealandia
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Aseismic plate boundary in the Indo-Burmese wedge, northwest Sunda Arc
Vineet K. Gahalaut; Bhaskar Kundu; Sunil Singh Laishram; Joshi Catherine; Arun Kumar; M. Devchandra Singh; R.P. Tiwari; R.K. Chadha; S.K. Samanta; A. Ambikapathy; P. Mahesh; Amit Bansal; M. Narsaiah
View articletitled, Aseismic plate boundary in the Indo-Burmese wedge, northwest Sunda Arc
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Sequence stratigraphy and the resolution of the fossil record
Daniele Scarponi; Darrell Kaufman; Alessandro Amorosi; Michał Kowalewski
View articletitled, Sequence stratigraphy and the resolution of the fossil record
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Direct observations of degassing-induced crystallization in basalts
L. Jane. Applegarth; Hugh Tuffen; Mike R. James; Harry Pinkerton; Katharine V. Cashman
View articletitled, Direct observations of degassing-induced crystallization in basalts
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Very little water is necessary to make a dry solid silicate system wet
Ralf Milke; Gregor Neusser; Kornelia Kolzer; Bernd Wunder
View articletitled, Very little water is necessary to make a dry solid silicate system wet
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Jurassic accretionary complex and ophiolite from northeast Turkey: No evidence for the Cimmerian continental ribbon
Gültekin Topuz; Gönenç Göçmengil; Yann Rolland; Ö. Faruk Çelik; Thomas Zack; Axel K. Schmitt
View articletitled, Jurassic accretionary complex and ophiolite from northeast Turkey: No evidence for the Cimmerian continental ribbon
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Refining paleoaltimetry reconstructions of the Sierra Nevada, California, using air parcel trajectories
Alex R. Lechler; Joseph Galewsky
View articletitled, Refining paleoaltimetry reconstructions of the Sierra Nevada, California, using air parcel trajectories
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Anthropogenic lead as a tracer of rock varnish growth: Implications for rates of formation
Michael N. Spilde; Leslie A. Melim; Diana E. Northup; Penelope J. Boston
View articletitled, Anthropogenic lead as a tracer of rock varnish growth: Implications for rates of formation
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Small-mammal diversity in Spain during the late Pleistocene to early Holocene: Climate, landscape, and human impact
Juan Manuel López-García; Hugues-Alexandre Blain; Juan Ignacio Morales; Carlos Lorenzo; Sandra Bañuls-Cardona; Gloria Cuenca-Bescós
View articletitled, Small-mammal diversity in Spain during the late Pleistocene to early Holocene: Climate, landscape, and human impact
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Discovery of ultrahigh-temperature metamorphism in the Acadian orogen, Connecticut, USA
Jay J. Ague; James O. Eckert, Jr.; Xu Chu; Ethan F. Baxter; C. Page Chamberlain
View articletitled, Discovery of ultrahigh-temperature metamorphism in the Acadian orogen, Connecticut, USA
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Ecological effects of the Paleozoic-Modern faunal transition: Comparing predation on Paleozoic brachiopods and molluscs
Lindsey R. Leighton; Amelinda E. Webb; Jennifer A. Sawyer
View articletitled, Ecological effects of the Paleozoic-Modern faunal transition: Comparing predation on Paleozoic brachiopods and molluscs
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Diverse Sr isotope signatures preserved in mid-oceanic-ridge basalt plagioclase
Amy E. Lange; Roger L. Nielsen; Frank J. Tepley, III; Adam J.R. Kent
View articletitled, Diverse Sr isotope signatures preserved in mid-oceanic-ridge basalt plagioclase
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Thick evaporites and early rifting in the Guaymas Basin, Gulf of California
Nathaniel C. Miller; Daniel. Lizarralde
View articletitled, Thick evaporites and early rifting in the Guaymas Basin, Gulf of California
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Articles

Explosive subglacial rhyolitic eruptions in Iceland are fuelled by high magmatic H2O and closed-system degassing
Jacqueline Owen; Hugh Tuffen; David W. McGarvie
View articletitled, Explosive subglacial rhyolitic eruptions in Iceland are fuelled by high magmatic H<sub>2</sub>O and closed-system degassing
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RESEARCH FOCUS

Exceptional preservation of microbial lipids in Paleozoic to Mesoproterozoic sediments
Lorenz Schwark
View articletitled, Exceptional preservation of microbial lipids in Paleozoic to Mesoproterozoic sediments
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All Issues
  • Online ISSN 1943-2682
  • ISSN 0091-7613
  • Copyright © 2025 Geological Society of America
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