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Mikro-korozija stalagmita v jami Küpeli, južna Turčija

Avtorji

  • Muhsin Eren Department of Geological Engineering, Mersin University
  • Muhammetmyrat Palvanov Department of Geological Engineering, Mersin University
  • Selahattin Kadir Department of Geological Engineering, Eskişehir Osmangazi University
  • Selim Kapur Department of Soil Science and Plant Nutrition, Çukurova University

DOI:

https://doi.org/10.3986/ac.v51i2.10589

Ključne besede:

Cave, speleothem, stalagmite, micro karstification, dissolution, mineralogy, micro crystal fabric

Povzetek

V članku obravnavamo mikro-korozijske oblike v stalagmitu iz jame Küpeli v južni Turčiji. Korozijo kapnikov lahko povzroča prenikla voda, ki se  v tleh, epikrasu ali jamski atmosferi obogati  s CO2 in pronica v kapnik. V članku postavimo domnevo, da je voda iz nekdanje površine stalagmita prodrla v notranjost vzdolž vertikalnih in diagonalnih por zarezne oblike, ki so nastale s korozivnim širjenjem medkristalnih por. Te podolgovate pore so precej naključno nastajale ob cikličnih pogojih rasti stalagmita in segajo nekaj rastnih plasti globoko pod površino stalagmita, ki jo je kasneje prekrila nova plast sige. Voda je ob pronicanju vzdolž teh por dosegla relativno bolj prepustno rastno ploskev in korodirala vzdolž le-te.  Pri tem so nastale različne mikro-korozijske oblike, kot so korozijske jamice,  zaobljene in povečane kristalne meje, medkristalne pore in nanometrski kristalni skupki, ki so nastali ob porušitvi večjih kristalov ((≥ 4 μm). V korozijskih porah se je kasneje na nekaterih mestih iz prenasičene vode ponovno izločal kalcit, bodisi zgolj na robovih por bodisi kot polnilo por. V cikličnih pogojih rasti je izločanje praviloma sledilo raztapljanju, verjetno zaradi sezonske spremenljivosti dostopnega  CO2 in v vodi raztopljenega kalcita.

Prenosi

Podatki o prenosih še niso na voljo.

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Prenosi

Objavljeno

2023-02-16

Verzije

Kako citirati

Eren, M., Palvanov, M. ., Kadir, S., & Kapur, S. (2023). Mikro-korozija stalagmita v jami Küpeli, južna Turčija. Acta Carsologica, 51(2). https://doi.org/10.3986/ac.v51i2.10589

Številka

Letn. 51 Št. 2 (2022)

Rubrike

Original papers

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