Evidence for ascending upper mantle‐derived melt beneath the Cheb basin, central Europe

Bräuer, Karin; Kämpf, Horst; Niedermann, Samuel; Strauch, Gerhard

doi:10.1029/2004gl022205

Cited by 44 publications

(55 citation statements)

References 29 publications

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“…However, recent investigations of fluids of mantle origin (e.g., Bräuer et al, 2005;Geissler et al, 2005) showed a possible link between the upper mantle and the earthquake swarm activity. Tertiary to Quaternary volcanism and the present-day escape of fluids of mantle origin around the major upper crustal fault zones may suggest that these faults can be linked with the upper mantle.…”

Section: E-mail Address: Vbabuska@igcasczmentioning

confidence: 99%

Intraplate seismicity in the western Bohemian Massif (central Europe): A possible correlation with a paleoplate junction

Babuška¹,

Plomerová²,

Fischer³

2007

Journal of Geodynamics

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Please cite this article as: Babuška, V., Plomerová, J., Fischer, T., Intraplate seismicity in the western Bohemian Massif (central Europe): A possible correlation with a paleoplate junction, Journal of Geodynamics (2007Geodynamics ( ), doi:10.1016Geodynamics ( /j.jog.2007 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Section: E-mail Address: Vbabuska@igcasczmentioning

confidence: 99%

Intraplate seismicity in the western Bohemian Massif (central Europe): A possible correlation with a paleoplate junction

Babuška¹,

Plomerová²,

Fischer³

2007

Journal of Geodynamics

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“…anomalous upper mantle structure, thinned crust, abundant basaltic volcanism, moderate seismicity, mantlederived fluids approaching the surface, typical graben morphology and graben-related sedimentary basins (e.g. Wilson and Downes 2006;Ulrych et al 2000), the western part of the ER stands out because of several signatures highlighting its recent dynamics: earthquake swarms occurring in uncommonly short intervals of several years (Fischer and Horálek 2003), high proportions of mantlederived CO 2 and He, spatially and probably also genetically associated with Pleistocene volcanoes (Weinlich et al 1999;Bräuer et al 2005;Kämpf et al 2005), neotectonic crustal movements (Bankwitz et al 2003) and the post-rift uplift of the Krušné hory (Erzgebirge) Mts. representing the NW margin of the ER.…”

Section: Introductionmentioning

confidence: 98%

Bottom to top lithosphere structure and evolution of western Eger Rift (Central Europe)

Babuška

Fiala

Plomerová

2009

Int J Earth Sci (Geol Rundsch)

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We present model of the structure and development of the entire lithosphere beneath the western Eger Rift (ER). Its crustal architecture and paths of volcanic products are closely related to sutures/boundaries of uppermost mantle domains distinguished by different orientations of olivine fabric, derived from 3-D analysis of seismic anisotropy. Three different fabrics of the mantle lithosphere belong to the Saxothuringian (ST), Teplá-Barrandian (TB) and Moldanubian (MD) microplates assembled during the Variscan orogeny. Dipping fossil (pre-assembly) olivine orientations, consistent within each unit, do not support any voluminous mantle delamination. The variable rift structure and morphology depend on the character of the pre-rift suture between the northern ST unit and the TB/MD units in the southern rift flank. The proper rift with typical graben morphology has developed above the steep lithosphere-scale suture between the ST and TB units. This subduction-related boundary originated from the closure of the ST Ocean. Parts of the crust and mantle lithosphere were dragged there into asthenospheric depths and then rapidly uplifted. The suture is marked by abrupt change in the mantle fabric and sharp gradients in regional gravity field and in metamorphic grade. The secular TBside-down normal movement is reflected in deep sedimentary basins, which developed since the Carboniferous to Cenozoic and in topography. The graben morphology of the ER terminates above the ''triple junction'' of the ST, TB and MD mantle lithospheres. The junction is characterized by offsets of surface boundaries of the tectonic units from their mantle counterparts indicating a detachment of the rigid upper crust from the mantle lithosphere. The southwest continuation of the rift features in Bavaria is expressed in occurrences of Cenozoic sediments and volcanics above an inclined broad transition zone between the ST and MD lithospheres. Schematic scenario of evolution of the region consists mainly of a subduction of the ST lithosphere to depths around 140 km, exhumation of HP-HT rocks and the post-tectonic granitoid plutonism.

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“…Therefore, He and C isotopic geochemistry has been widely utilized in monitoring earthquakes and volcanoes (Sano et al 1998;Tedesco and Scarsi 1999;Bräuer et al 2005;Umeda et al 2007;Yang et al 2009). The C originating from the crust (Du et al 2006;Shen et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Hot Spring Gas Geochemistry in Western Sichuan Province, China After the Wenchuan Ms 8.0 Earthquake

Zhou¹,

Wang²,

Chen³

et al. 2015

Terr. Atmos. Ocean. Sci.

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The chemical components, He, Ne, and C isotropic ratios of gas samples collected thrice from 32 hot springs in western Sichuan Province, southwestern China in June and October 2008 and June 2009 were investigated in order to discuss the relationship between hot spring gas geochemistry and the Wenchuan Ms 8.0 earthquake. The data showed that the 3 He/ 4 He and C 13CO2 d values in spring gases in the Longmenshan fault (LMSF), Xianshuihe fault (XSHF), and Minjiang fault (MJF) zones increased obviously after the great earthquake. It was estimated that up to 62% of mantle helium contributed to the spring gas in the Kangding region based on the maximum 3 He/ 4 He (7.42 × 10 -6 ) in June 2008. Over time the mantle derived fluid contribution to the hot springs gradually decreased, but the crustal gas components: CO 2 and CH 4 derived from organic matter and radiogenic He increased. The gas geochemical data suggested that more mantle fluids migrated into the crust in western Sichuan Province after the Wenchuan Ms 8.0 earthquake.

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Evidence for ascending upper mantle‐derived melt beneath the Cheb basin, central Europe

Cited by 44 publications

References 29 publications

Intraplate seismicity in the western Bohemian Massif (central Europe): A possible correlation with a paleoplate junction

Intraplate seismicity in the western Bohemian Massif (central Europe): A possible correlation with a paleoplate junction

Bottom to top lithosphere structure and evolution of western Eger Rift (Central Europe)

Hot Spring Gas Geochemistry in Western Sichuan Province, China After the Wenchuan Ms 8.0 Earthquake

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