Reconstruction of ancient volcanic complexes using magnetic
signature: A case study from Cambrian andesite lava flow,
Bohemian Massif

J 2022

Reconstruction of ancient volcanic complexes using magnetic signature: A case study from Cambrian andesite lava flow, Bohemian Massif

KOLÁŘOVÁ, Kristina; Jan ČERNÝ; Rostislav MELICHAR; Petr SCHNABL; Krzysztof GAIDZIK et. al.

Basic information

Original name

Reconstruction of ancient volcanic complexes using magnetic signature: A case study from Cambrian andesite lava flow, Bohemian Massif

Name in Czech

Rekonstrukce starého vulkanického komplexu za použití magnetického záznamu: Případová studie z kambrického lávového proudu, Český masiv,

Authors

KOLÁŘOVÁ, Kristina (203 Czech Republic, guarantor, belonging to the institution); Jan ČERNÝ (203 Czech Republic); Rostislav MELICHAR (203 Czech Republic, belonging to the institution); Petr SCHNABL (203 Czech Republic) and Krzysztof GAIDZIK (616 Poland)

Edition

Journal of Volcanology and Geothermal Research, Elsevier, 2022, 0377-0273

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10505 Geology

Country of publisher

Netherlands

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 2.900

RIV identification code

RIV/00216224:14310/22:00125910

Organization unit

Faculty of Science

DOI

https://doi.org/10.1016/j.jvolgeores.2022.107591

UT WoS

000810117800002

EID Scopus

2-s2.0-85131436655

Keywords in English

Andesite; Lava flow; Cambrian; Anisotropy of magnetic susceptibility; Bohemian Massif; Křivoklát-Rokycany Volcanic complex

Abstract

In the original language

Reconstruction of the Upper Cambrian Křivoklát-Rokycany Volcanic Complex was made using anisotropy of magnetic susceptibility (AMS). The correlation of AMS with visible structures at a few sites showed that the most important and reliable information was the direction of magnetic lineation K1 that determines the direction of a lava flow. The analysis of K1 directions together with radially propagating dikes helped to determine the feeding area along the NW rim of the volcanic complex. One andesite feeder and one rhyodacite feeder were recognized with certainty. In addition, K1 directions pointed to a suspicious area with the presence of another andesite feeder in a caldera-like structure. The evaluation of data strongly suggests that magnetic susceptibility in andesite lavas increases with the distance from the feeder and also with the distance towards the upper part of the andesitic lava flow. We suggest that this might be related to the degree of oxidation of the lava flow before solidification as a reaction with oxygen in the atmosphere. Oxygen can react with FeO in the andesite melt, which consequently results in the formation of magnetite.

Cite

KOLÁŘOVÁ, Kristina; Jan ČERNÝ; Rostislav MELICHAR; Petr SCHNABL and Krzysztof GAIDZIK. Reconstruction of ancient volcanic complexes using magnetic signature: A case study from Cambrian andesite lava flow, Bohemian Massif. Journal of Volcanology and Geothermal Research. Elsevier, 2022, vol. 428, August, p. 1-13. ISSN 0377-0273. Available from: https://doi.org/10.1016/j.jvolgeores.2022.107591.

@article{1857399,
   author = {Kolářová, Kristina and Černý, Jan and Melichar, Rostislav and Schnabl, Petr and Gaidzik, Krzysztof},
   article_number = {August},
   doi = {https://doi.org/10.1016/j.jvolgeores.2022.107591},
   keywords = {Andesite; Lava flow; Cambrian; Anisotropy of magnetic susceptibility; Bohemian Massif; Křivoklát-Rokycany Volcanic complex},
   language = {eng},
   issn = {0377-0273},
   journal = {Journal of Volcanology and Geothermal Research},
   title = {Reconstruction of ancient volcanic complexes using magnetic signature: A case study from Cambrian andesite lava flow, Bohemian Massif},
   url = {https://doi.org/10.1016/j.jvolgeores.2022.107591},
   volume = {428},
   year = {2022}
}

TY  - JOUR
ID  - 1857399
AU  - Kolářová, Kristina - Černý, Jan - Melichar, Rostislav - Schnabl, Petr - Gaidzik, Krzysztof
PY  - 2022
TI  - Reconstruction of ancient volcanic complexes using magnetic signature: A case study from Cambrian andesite lava flow, Bohemian Massif
JF  - Journal of Volcanology and Geothermal Research
VL  - 428
IS  - August
SP  - 1-13
EP  - 1-13
PB  - Elsevier
SN  - 03770273
KW  - Andesite
KW  - Lava flow
KW  - Cambrian
KW  - Anisotropy of magnetic susceptibility
KW  - Bohemian Massif
KW  - Křivoklát-Rokycany Volcanic complex
UR  - https://doi.org/10.1016/j.jvolgeores.2022.107591
N2  - Reconstruction of the Upper Cambrian Křivoklát-Rokycany Volcanic Complex was made using anisotropy of magnetic susceptibility (AMS). The correlation of AMS with visible structures at a few sites showed that the most important and reliable information was the direction of magnetic lineation K1 that determines the direction of a lava flow. The analysis of K1 directions together with radially propagating dikes helped to determine the feeding area along the NW rim of the volcanic complex. One andesite feeder and one rhyodacite feeder were recognized with certainty. In addition, K1 directions pointed to a suspicious area with the presence of another andesite feeder in a caldera-like structure. The evaluation of data strongly suggests that magnetic susceptibility in andesite lavas increases with the distance from the feeder and also with the distance towards the upper part of the andesitic lava flow. We suggest that this might be related to the degree of oxidation of the lava flow before solidification as a reaction with oxygen in the atmosphere. Oxygen can react with FeO in the andesite melt, which consequently results in the formation of magnetite.
ER  -

KOLÁŘOVÁ, Kristina; Jan ČERNÝ; Rostislav MELICHAR; Petr SCHNABL and Krzysztof GAIDZIK. Reconstruction of ancient volcanic complexes using magnetic signature: A case study from Cambrian andesite lava flow, Bohemian Massif. \textit{Journal of Volcanology and Geothermal Research}. Elsevier, 2022, vol.~428, August, p.~1-13. ISSN~0377-0273. Available from: https://doi.org/10.1016/j.jvolgeores.2022.107591.

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