Magma flow paths and strain patterns in magma chambers growing by floor subsidence: a model based on magnetic fabric study of shallow-level plutons in the Štiavnica volcano-plutonic complex, Western Carpathians

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10283108" target="_blank" >RIV/00216208:11310/14:10283108 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985831:_____/14:00434872

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00445-014-0873-z" target="_blank" >http://dx.doi.org/10.1007/s00445-014-0873-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00445-014-0873-z" target="_blank" >10.1007/s00445-014-0873-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Magma flow paths and strain patterns in magma chambers growing by floor subsidence: a model based on magnetic fabric study of shallow-level plutons in the Štiavnica volcano-plutonic complex, Western Carpathians

Popis výsledku v původním jazyce

The Miocene Štiavnica volcano-plutonic complex, Western Carpathians, exposes two nearly coeval intra-caldera plutons, their roof (basement of a stratovolcano), and associated volcanic rocks. The complex thus provides insights into mechanisms of magma chamber growth beneath large volcanoes. As inferred from the anisotropy of magnetic susceptibility (AMS), these plutons were emplaced through significantly different processes: the diorite as a discordant stock with steep fabric and the granodiorite as a tabular, bell-jar pluton. In detail, we interpret that the latter was assembled in two stages. First, an upper "layer" intruded as a thin sill along a major subhorizontal basement/cover detachment. The subhorizontal magnetic fabric and strongly oblate AMSellipsoid in this layer record intrusive strain where the magma flow paths were subparallel to the pluton roof. Second, in the lower "layer" of the pluton, magnetic foliations dip moderately to the similar to NW and similar to WNW to vert

Název v anglickém jazyce

Magma flow paths and strain patterns in magma chambers growing by floor subsidence: a model based on magnetic fabric study of shallow-level plutons in the Štiavnica volcano-plutonic complex, Western Carpathians

Popis výsledku anglicky

The Miocene Štiavnica volcano-plutonic complex, Western Carpathians, exposes two nearly coeval intra-caldera plutons, their roof (basement of a stratovolcano), and associated volcanic rocks. The complex thus provides insights into mechanisms of magma chamber growth beneath large volcanoes. As inferred from the anisotropy of magnetic susceptibility (AMS), these plutons were emplaced through significantly different processes: the diorite as a discordant stock with steep fabric and the granodiorite as a tabular, bell-jar pluton. In detail, we interpret that the latter was assembled in two stages. First, an upper "layer" intruded as a thin sill along a major subhorizontal basement/cover detachment. The subhorizontal magnetic fabric and strongly oblate AMSellipsoid in this layer record intrusive strain where the magma flow paths were subparallel to the pluton roof. Second, in the lower "layer" of the pluton, magnetic foliations dip moderately to the similar to NW and similar to WNW to vert

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP210%2F12%2F1385" target="_blank" >GAP210/12/1385: Kaldery jako indikátory termálního a mechanického vývoje subvulkanických magmatických krbů</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Bulletin of Volcanology

ISSN

0258-8900

e-ISSN

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Svazek periodika

76

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

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Kód UT WoS článku

000343088400004

EID výsledku v databázi Scopus

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