Graphite/graphitic rocks as cause of the electric conductivity anomaly and their relationship to the tectonics - A review

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4 Citations (Scopus)

Abstract

From the very beginning of the magnetotelluric (MT) studies two notions have been coupled to each other: the graphite as one of the causes of strong conductivity anomalies and tectonics. The graphitic formations of very low resistivity (<10-1 ωm) are accumulated in the shear zones, thrust sheets, detachment horizon etc. and by this way they indicate the tectonics/paleotectonics which may not be indicated by other geophysical method so definitely. The author firstly surveys the manifestation of this phenomenon in case histories of the literature, then illustrates it by own very detailed study carried out on the Transdanubian crustaJ conductivity anomaly (TCA). The material of the conductor and their possible relation to the seismicity of the area will also be demonstrated by the TCA anomaly. In the closing chapters the origin of the graphite and its accumulation in the shear zones is discussed including the role of the (geothermal) water.

Original languageEnglish
Pages (from-to)391-411
Number of pages21
JournalActa Geodaetica et Geophysica Hungarica
Volume40
Issue number3-4 SPEC. ISS.
DOIs
Publication statusPublished - 2005

Fingerprint

Tectonics
graphite
tectonics
Graphite
conductivity
Rocks
Magnetotellurics
rocks
anomalies
anomaly
causes
rock
shear zone
shear
case histories
geophysical method
closing
detachment
thrust
horizon

Keywords

  • Carbon film
  • Fluid
  • Graphite
  • Magnetotellurics
  • Seismicity
  • Shear zone
  • Tectonics
  • Trust sheet

ASJC Scopus subject areas

  • Building and Construction
  • Geology

Cite this

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abstract = "From the very beginning of the magnetotelluric (MT) studies two notions have been coupled to each other: the graphite as one of the causes of strong conductivity anomalies and tectonics. The graphitic formations of very low resistivity (<10-1 ωm) are accumulated in the shear zones, thrust sheets, detachment horizon etc. and by this way they indicate the tectonics/paleotectonics which may not be indicated by other geophysical method so definitely. The author firstly surveys the manifestation of this phenomenon in case histories of the literature, then illustrates it by own very detailed study carried out on the Transdanubian crustaJ conductivity anomaly (TCA). The material of the conductor and their possible relation to the seismicity of the area will also be demonstrated by the TCA anomaly. In the closing chapters the origin of the graphite and its accumulation in the shear zones is discussed including the role of the (geothermal) water.",
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AU - Ádám, A.

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