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@MASTERSTHESIS{Virgo:230247,
      author       = {Virgo, Simon and Arndt, Max},
      title        = {{E}volution of a crack-seal calcite vein network in
                      limestone : a high resolution structural, microstructural
                      and geochemical study from the {J}ebel {A}khdar high
                      pressure cell, {O}man {M}ountains},
      address      = {Aachen},
      publisher    = {Publikationsserver der RWTH Aachen University},
      reportid     = {RWTH-CONV-144905},
      pages        = {129 S. : Ill., graph. Darst., Kt.},
      year         = {2010},
      note         = {Veröffentlicht auf dem Publikationsserver der RWTH Aachen
                      University; Aachen, Techn. Hochsch., Diplomarbeit, 2010},
      abstract     = {We present a workflow to acquire and create a 1.2 Gipapixel
                      high-resolution outcrop panorama of a polished limestone
                      pavement on the Western flank of Jabal Shams in the Oman
                      Mountains. The outcrop panorama serves as a basemap to
                      integrate structural, microstructural and geochemical
                      investigations in a Geographic Information System. The
                      outcrop provides insight to the evolution of a high-density
                      calcite vein network in Limestone. The network as it appears
                      in the outcrop has never been a network of interconnected
                      open fractures, but it evolved dynamically. Subvertical
                      dilatant veins with variable strike directions show mutual
                      age relationships, indicating a uniaxial horizontal
                      extension under close to lithostatic fluid pressure
                      conditions. The high vein density and lacking abutting of
                      veins suggest a quick restoration of bulk strength by
                      fracture healing. Large vein apertures are realized by both
                      vein stacking and a multitude of crack-seal cycles, as
                      indicated by hostrock inclusions. The episodic growth of
                      veins, which is accompanied by episodic fluid flow, is also
                      suggested by large isotope variations across single veins.
                      Existing veins act as anisotropies depending on orientation
                      and their sealing driven strength regeneration. They
                      significantly influence the formation of new fractures and
                      largely control the geometry of the vein network. Stable
                      isotope measurements imply alteration of the host rock by
                      external fluids prior to the formation of the vein network.
                      The majority of the veins show a rock-buffered isotopic
                      signature. Low d13C values in some veins suggest an influx
                      of oxidized light hydrocarbons. The fluid system was
                      unlocked by E-W striking normal faults, which is preserved
                      in fault related veins by increased d18O values.},
      keywords     = {Omangebirge (SWD) / Oman (SWD) / Spannung <Geologie> (SWD)
                      / Endogene Dynamik (SWD) / Ader <Geologie> (SWD) /
                      Oberkreide (SWD) / Kalkstein (SWD)},
      cin          = {530000 / 531220 / 541220},
      ddc          = {550},
      cid          = {$I:(DE-82)530000_20140620$ / $I:(DE-82)531220_20140620$ /
                      $I:(DE-82)541220_20140620$},
      typ          = {PUB:(DE-HGF)10},
      urn          = {urn:nbn:de:hbz:82-opus-33858},
      doi          = {10.18154/RWTH-CONV-144905},
      url          = {https://publications.rwth-aachen.de/record/230247},
}