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Volume 48, Number 3
1 March 2020
Geology Cover Image for Volume 48, Issue 3
ISSN: 0091-7613
EISSN: 1943-2682
In this Issue

Articles

Triple oxygen isotope variations in magnetite from iron-oxide deposits, central Iran, record magmatic fluid interaction with evaporite and carbonate host rocks
Stefan T.M. Peters; Narges Alibabaie; Andreas Pack; Seann J. McKibbin; Davood Raeisi; Niloofar Nayebi; Farhad Torab; Trevor Ireland; Bernd Lehmann
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Oceanic slab-top melting during subduction: Implications for trace-element recycling and adakite petrogenesis
David Hernández-Uribe; Juan David Hernández-Montenegro; Kim A. Cone; Richard M. Palin
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Persistence of melt-bearing Archean lower crust for >200 m.y.—An example from the Lewisian Complex, northwest Scotland
Richard J.M. Taylor; Tim E. Johnson; Chris Clark; Richard J. Harrison
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Recent density decline in wild-collected subarctic crustose coralline algae reveals climate change signature
P.T.W. Chan; J. Halfar; W.H. Adey; P.A. Lebednik; R. Steneck; C.J.D. Norley; D.W. Holdsworth
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Magma accumulation beneath Santorini volcano, Greece, from P-wave tomography
B.G. McVey; E.E.E. Hooft; B.A. Heath; D.R. Toomey; M. Paulatto; J.V. Morgan; P. Nomikou; C.B. Papazachos
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Redistribution of germanium during dynamic recrystallization of sphalerite
Alexandre Cugerone; Bénédicte Cenki-Tok; Emilien Oliot; Manuel Muñoz; Fabrice Barou; Vincent Motto-Ros; Elisabeth Le Goff
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A Middle Devonian basin-scale precious metal enrichment event across northern Yukon (Canada)
M.G. Gadd; J.M. Peter; D. Hnatyshin; R. Creaser; S. Gouwy; T. Fraser
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Atmospheric dust stimulated marine primary productivity during Earth’s penultimate icehouse
Mehrdad Sardar Abadi; Jeremy D. Owens; Xiaolei Liu; Theodore R. Them, II; Xingqian Cui; Nicholas G. Heavens; Gerilyn S. Soreghan
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Results from the first geologic traverse on the topographic rim of a complex impact crater, Endeavour Crater, Mars
L.S. Crumpler; R.E. Arvidson; D.W. Mittlefehldt; J.A. Grant; W.H. Farrand
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Extensional tectonics rooted in orogenic collapse: Long-lived disintegration of the Semail Ophiolite, Oman
Alvar Braathen; Per Terje Osmundsen
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Diachronous Tibetan Plateau landscape evolution derived from lava field geomorphology
Robert Law; Mark B. Allen
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Linking postglacial landscapes to glacier dynamics using swath radar at Thwaites Glacier, Antarctica
N. Holschuh; K. Christianson; J. Paden; R.B. Alley; S. Anandakrishnan
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Late Paleogene emergence of a North American loess plateau
Majie Fan; Ran Feng; John W. Geissman; Christopher J. Poulsen
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Fading magnetic anomalies, thermal structure and earthquakes in the Japan Trench
Hanjin Choe; Jerome Dyment
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Pulverized quartz clasts in gouge of the Alhama de Murcia fault (Spain): Evidence for coseismic clast pulverization in a matrix deformed by frictional sliding
Emilio Rodríguez-Escudero; José J. Martínez-Díaz; Jorge L. Giner-Robles; Meaza Tsige; Jaime Cuevas-Rodríguez
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Ecological disturbance in tropical peatlands prior to marine Permian-Triassic mass extinction
Daoliang Chu; Stephen E. Grasby; Haijun Song; Jacopo Dal Corso; Yao Wang; Tamsin A. Mather; Yuyang Wu; Huyue Song; Wenchao Shu; Jinnan Tong; Paul B. Wignall
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Environmental predictors of deep-sea polymetallic nodule occurrence in the global ocean
Adriana Dutkiewicz; Alexander Judge; R. Dietmar Müller
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Magnetite magnetofossils record biogeochemical remanent magnetization in hydrogenetic ferromanganese crusts
Wei Yuan; Huaiyang Zhou; Zhenyu Yang; James R. Hein; Qunhui Yang
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  • Cover Image

    Cover Image

    issue cover

    COVER: Fossilized vascular land plant exposed on a bedding plane within a riverbank exposure of hyper-enriched black shale at the Peel River locality, Yukon, Canada (field of view is 14 cm wide). The Middle Devonian age of this locality suggests that the woody fossils belong to the extinct class Cladoxylopsid. The primary carbonaceous materials were replaced by pyrite and millerite permineralizations within a sediment-starved and microbially active depositional environment. See Gadd et al., “A Middle Devonian basin-scale precious metal enrichment event across northern Yukon (Canada)”, p. 242–246.

    Photo by: Jan M. Peter

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  • Online ISSN 1943-2682
  • ISSN 0091-7613
  • Copyright © 2025 Geological Society of America
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