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

Articles

Stable oxygen and carbon isotopes of carbonates in lake sediments as a paleoflood proxy
Lucas Kämpf; Birgit Plessen; Stefan Lauterbach; Carla Nantke; Hanno Meyer; Bernhard Chapligin; Achim Brauer
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Inherited terrane properties explain enigmatic post-collisional Himalayan-Tibetan evolution
Sean Kelly; Christopher Beaumont; Jared P. Butler
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Uranium isotopic constraints on the nature of the prehistoric flood at the Lajia site, China
Le Li; Jun Chen; David William Hedding; Yuanhe Fu; Maolin Ye; Gaojun Li
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Recrystallization and chemical changes in apatite in response to hypervelocity impact
Gavin G. Kenny; Andreas Karlsson; Martin Schmieder; Martin J. Whitehouse; Alexander A. Nemchin; Jeremy J. Bellucci
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Fossil subduction recorded by quartz from the coesite stability field
M. Alvaro; M.L. Mazzucchelli; R.J. Angel; M. Murri; N. Campomenosi; M. Scambelluri; F. Nestola; A. Korsakov; A.A. Tomilenko; F. Marone; M. Morana
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Land plant evolution decreased, rather than increased, weathering rates
Michael P. D’Antonio; Daniel E. Ibarra; C. Kevin Boyce
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Calcium isotope evidence for environmental variability before and across the Cretaceous-Paleogene mass extinction
Benjamin J. Linzmeier; Andrew D. Jacobson; Bradley B. Sageman; Matthew T. Hurtgen; Meagan E. Ankney; Sierra V. Petersen; Thomas S. Tobin; Gabriella D. Kitch; Jiuyuan Wang
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Reef-flat and back-reef development in the Great Barrier Reef caused by rapid sea-level fall during the Last Glacial Maximum (30–17 ka)
Kazuhiko Fujita; Noriko Yagioka; Choko Nakada; Hironobu Kan; Yosuke Miyairi; Yusuke Yokoyama; Jody M. Webster
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A 1.25 Ga depositional age for the “Paleoproterozoic” Mapedi red beds, Kalahari manganese field, South Africa: New constraints on the timing of oxidative weathering and hematite mineraliz...
Birger Rasmussen; Janet R. Muhling; Jian-Wei Zi; Harilaos Tsikos; Woodward W. Fischer
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The preparatory phase of the Mw 6.1 2009 L’Aquila (Italy) normal faulting earthquake traced by foreshock time-lapse tomography
Paola Baccheschi; Pasquale De Gori; Fabio Villani; Fabio Trippetta; Claudio Chiarabba
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Focused fluid seepage related to variations in accretionary wedge structure, Hikurangi margin, New Zealand
Sally J. Watson; Joshu J. Mountjoy; Philip M. Barnes; Gareth J. Crutchley; Geoffroy Lamarche; Ben Higgs; Jess Hillman; Alan R. Orpin; Aaron Micallef; Helen Neil; John Mitchell; Arne Pallentin; Tim Kane; Susi Woelz; David Bowden; Ashley A. Rowden; Ingo A. Pecher
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Pedogenic siderites fossilizing Ediacaran soil microorganisms on the Baltica paleocontinent
Maciej J. Bojanowski; Magdalena Goryl; Barbara Kremer; Beata Marciniak-Maliszewska; Leszek Marynowski; Jan Środoń
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Revisiting groundwater carbon fluxes to the ocean with implications for the carbon cycle
Shuang Zhang; Noah J. Planavsky
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Biomediation of submarine sediment gravity flow dynamics
Melissa J. Craig; Jaco H. Baas; Kathryn J. Amos; Lorna J. Strachan; Andrew J. Manning; David M. Paterson; Julie A. Hope; Scott D. Nodder; Megan L. Baker
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Mechanism for enhanced eolian dust flux recorded in North Pacific Ocean sediments since 4.0 Ma: Aridity or humidity at dust source areas in the Asian interior?
Qiang Zhang; Qingsong Liu; Andrew P. Roberts; Juan C. Larrasoaña; Xuefa Shi; Chunsheng Jin
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Operation of the boreal peatland methane cycle across the past 16 k.y.
Yanhong Zheng; Zhengkun Fang; Tongyu Fan; Zhao Liu; Zhangzhang Wang; Qiyuan Li; Richard D. Pancost; B. David A. Naafs
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Evolution of the melt source during protracted crustal anatexis: An example from the Bhutan Himalaya
Thomas Hopkinson; Nigel Harris; Nick M.W. Roberts; Clare J. Warren; Sam Hammond; Christopher J. Spencer; Randall R. Parrish
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Phosphorus burial in ferruginous SiO2-rich Mesoproterozoic sediments
Brooke R. Johnson; Rosalie Tostevin; Philip Gopon; Jon Wells; Stuart A. Robinson; Nicholas J. Tosca
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Forum

Tubey or not tubey: Death beds of Ediacaran macrofossils or microbially induced sedimentary structures?: COMMENT
Mark A.S. McMenamin
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Tubey or not tubey: Death beds of Ediacaran macrofossils or microbially induced sedimentary structures?: REPLY
Lyle L. Nelson; Emily F. Smith
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  • Cover Image

    Cover Image

    issue cover

    COVER: An apatite grain from the Paasselkä impact structure, Finland, developed striking recrystallization textures in response to hypervelocity impact; shown to be associated with changes in the mineral’s chemical composition. The grain is ~0.1 mm long. See “Recrystallization and chemical changes in apatite in response to hypervelocity impact” by Kenny et al., p. 19–23.

    Photo by: Gavin Kenny

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  • Online ISSN 1943-2682
  • ISSN 0091-7613
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