Geochemistry, Geophysics, Geosystems

Cover image for Vol. 15 Issue 3

Early View (Online Version of Record published before inclusion in an issue)

Impact Factor: 2.939

ISI Journal Citation Reports © Ranking: 2012: 16/76 (Geochemistry & Geophysics)

Online ISSN: 1525-2027

VIEW

  1. 1 - 18
  1. Research Articles

    1. Physics of crustal fracturing and chert dike formation triggered by asteroid impact, ∼3.26 Ga, Barberton greenstone belt, South Africa

      Norman H. Sleep and Donald R. Lowe

      Article first published online: 14 APR 2014 | DOI: 10.1002/2014GC005229

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      Key Points

      • Archean asteroid impact produced extreme seismic waves
      • Waves damaged shallow subsurface at teleseismic distance
      • Net movement of material by gravity occurred during shaking
    2. Evidence for a broadly distributed Samoan-plume signature in the northern Lau and North Fiji Basins

      Allison A. Price, Matthew G. Jackson, Janne Blichert-Toft, Paul S. Hall, John M. Sinton, Mark D. Kurz and Jerzy Blusztajn

      Article first published online: 11 APR 2014 | DOI: 10.1002/2013GC005061

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      Key Points

      • Mantle can undergo melting at a step change in lithospheric thickness
      • Samoan mantle may have been advected around the paleo-Tonga slab near present-day SPR
      • New data support the hypothesis that Wallis Island has a Samoan pedigree
    3. Detection of overpressure zones and a statistical model for pore pressure estimation from well logs in the Krishna-Godavari Basin, India

      Dip Kumar Singha and Rima Chatterjee

      Article first published online: 11 APR 2014 | DOI: 10.1002/2013GC005162

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      Key Points

      • Regression model has been developed to estimate pore pressure
      • Model predicted values have been implemented in other wells
      • Overpressure zone is detected
    4. Re-Os age and depositional environment for black shales from the Cambrian-Ordovician boundary, Green Point, western Newfoundland

      Gyana Ranjan Tripathy, Judith L. Hannah, Holly J. Stein and Gang Yang

      Article first published online: 11 APR 2014 | DOI: 10.1002/2013GC005217

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      Key Points

      • Re-Os age for the Cambrian-Ordovician GSSP is 484 ± 16 Ma
      • Geochemistry of Green Point shales shows their anoxic depositional condition
      • Important role of paleogeography in regulating seawater chemistry
    5. Deep-sea redox across the Paleocene-Eocene thermal maximum

      Cecily Pälike, Margaret L. Delaney and James C. Zachos

      Article first published online: 11 APR 2014 | DOI: 10.1002/2013GC005074

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      Key Points

      • We measure concentrations of Mn and U in marine PETM sediments
      • North Atlantic bottom waters were suboxic relative to the Pacific during the PETM
      • The source of methane release during the PETM was likely in the North Atlantic
  2. Technical Briefs

    1. Community infrastructure and repository for marine magnetic identifications

      Maria Seton, Joanne M. Whittaker, Paul Wessel, R. Dietmar Müller, Charles DeMets, Sergey Merkouriev, Steve Cande, Carmen Gaina, Graeme Eagles, Roi Granot, Joann Stock, Nicky Wright and Simon E. Williams

      Article first published online: 11 APR 2014 | DOI: 10.1002/2013GC005176

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      Key Points

      • New open-source, online repository for checked magnetic anomaly identifications
      • Sample data set of >96,000 individually picked magnetic anomaly identifications
      • Infrastructure to facilitate research in plate tectonic reconstructions
  3. Research Articles

    1. Seismic mountain building: Landslides associated with the 2008 Wenchuan earthquake in the context of a generalized model for earthquake volume balance

      Gen Li, A. Joshua West, Alexander L. Densmore, Zhangdong Jin, Robert N. Parker and Robert G. Hilton

      Article first published online: 11 APR 2014 | DOI: 10.1002/2013GC005067

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      Key Points

      • Report a new data set of landslides triggered by the 2008 Wenchuan earthquake
      • Develop a quantitative model to estimate earthquake volume balance
      • Evaluate how earthquakes of varying magnitude contribute to coseismic mountain building
    2. Piecewise delamination of Moroccan lithosphere from beneath the Atlas Mountains

      M. J. Bezada, E. D. Humphreys, J.M. Davila, R. Carbonell, M. Harnafi, I. Palomeras and A. Levander

      Article first published online: 9 APR 2014 | DOI: 10.1002/2013GC005059

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      Key Points

      • We image lithospheric cavities beneath the Middle Atlas and central HighAtlas
      • We image the delaminated lithosphere of the Middle Atlas at ∼400 km depth
      • We propose piecewise delamination of Atlas lithosphere
    3. Background and delayed-triggered swarms in the central Southern Alps, South Island, New Zealand

      C. M. Boese, K. M. Jacobs, E. G. C. Smith, T. A. Stern and J. Townend

      Article first published online: 2 APR 2014 | DOI: 10.1002/2013GC005171

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      Key Points

      • Remote triggering of earthquake swarms has been observed twice within two years
      • Delayed-triggered swarms may be clock-advanced background swarms
      • We infer fluid-diffusion as the preferred cause for the delay in triggering
    4. You have full text access to this OnlineOpen article
      Natural surface rebound of the Bangkok plain and aquifer characterization by persistent scatterer interferometry

      Kazuya Ishitsuka, Yo Fukushima, Takeshi Tsuji, Yasuhiro Yamada, Toshifumi Matsuoka and Pham Huy Giao

      Article first published online: 2 APR 2014 | DOI: 10.1002/2013GC005154

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      Key Points

      • We detected surface in Bangkok has been uplifting due to groundwater recovery
      • We mapped the unrecognized aquifer connectivity controlling recovery pattern
      • Our method is useful to characterize elastic response and aquifer structure
    5. Magnetic properties of variably serpentinized peridotites and their implication for the evolution of oceanic core complexes

      Marco Maffione, Antony Morris, Oliver Plümper and Douwe J. J. van Hinsbergen

      Article first published online: 2 APR 2014 | DOI: 10.1002/2013GC004993

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      Key Points

      • Magnetic properties of variably serpentinized peridotite are investigated
      • Abyssal peridotites are unlikely to contribute to marine magnetic anomalies
      • A new conceptual model for serpentinization at OCCs is proposed
  4. Technical Briefs

    1. Determination of B/Ca of natural carbonates by HR-ICP-MS

      Sambuddha Misra, Mervyn Greaves, Robert Owen, Joanna Kerr, Aurora C. Elmore and Henry Elderfield

      Article first published online: 2 APR 2014 | DOI: 10.1002/2013GC005049

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      Key Points

      • B/Ca and Me/Ca determination from <5 µg CaCO3
      • External precision <4.0% (2σ) on B/Ca
      • Analysis of Me/Ca from single foraminifera shell
  5. Research Articles

    1. Model evaluation of the coherence of a common source water oxygen isotopic signal recorded by tree-ring cellulose and speleothem calcite

      S. R. Managave

      Article first published online: 2 APR 2014 | DOI: 10.1002/2013GC004983

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      Key Points

      • Oxygen isotopic composition variation of rain affects correlation between oxygen isotopic composition records of two proxies
      • Relative humidity affects the correlation between oxygen isotopic composition records of two proxies
      • Intra-annual oxygen isotopic composition of tree-rings might give a better coherence with oxygen isotopic composition of speleothem
    2. Geochemistry of the Cambrian Sirius Passet Lagerstätte, Northern Greenland

      Ange Le Boudec, Jon Ineson, Minik Rosing, Lasse Døssing, François Martineau, Christophe Lécuyer and Francis Albarède

      Article first published online: 2 APR 2014 | DOI: 10.1002/2013GC005068

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      Key Points

      • Geochemistry of one of the most important Lagerstätte
      • Cambrian explosion triggered by wind-blown fertilization of the ocean
      • Continent assembly and high tectonic plateaus are part of biogeochemical cycles
    3. Constraints on a shallow offshore gas environment determined by a multidisciplinary geophysical approach: The Malin Sea, NW Ireland

      Xavier Garcia, Xavier Monteys, Rob L. Evans and Michal Szpak

      Article first published online: 2 APR 2014 | DOI: 10.1002/2013GC005108

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      Key Points

      • Use of a multidisciplinary approach
      • EM methods help distinguishing between gas and microbial activity (no gas)
      • We identify an area affected by gas release
    4. Empirical evidence for the fractionation of carbon isotopes between diamond and iron carbide from the Earth's mantle

      S. Mikhail, C. Guillermier, I. A. Franchi, A. D. Beard, K. Crispin, A. B. Verchovsky, A. P. Jones and H. J. Milledge

      Article first published online: 2 APR 2014 | DOI: 10.1002/2013GC005138

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      Key Points

      • In the mantle, C isotope fractionation may be larger in the hotter deep mantle
      • Carbide precipitation can produce isotopically distinct mantle carbon reservoirs
      • Core formation likely fractionated the C isotope value of the BSE
    5. Bayesian noise-reduction in Arabia/Somalia and Nubia/Arabia finite rotations since ∼20 Ma: Implications for Nubia/Somalia relative motion

      Giampiero Iaffaldano, Rhys Hawkins and Malcolm Sambridge

      Article first published online: 2 APR 2014 | DOI: 10.1002/2013GC005089

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      Key Points

      • Bayesian inference to reduce finite-rotation noise
      • Reconstruction of Nubia/Somalia motion since ∼20 Ma
      • Nubia/Somalia relative motion changed at ∼11 Ma
  6. Corrections

    1. You have free access to this content
      Correction to “Extreme crustal thinning in the Bay of Biscay and the Western Pyrenees: From observations to modeling”

      Suzon Jammes, Patricia Persaud, Luc Lavier and Gianreto Manatschal

      Article first published online: 1 MAR 2014 | DOI: 10.1002/2013GC00505

      This article corrects:

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