Flow behaviour in the intra-caldera setting: an AMS study ofthe large (>1290 km3) Permian Ora ignimbrite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F15%3A00000002" target="_blank" >RIV/00025798:_____/15:00000002 - isvavai.cz</a>

Výsledek na webu

<a href="http://sp.lyellcollection.org/content/early/2014/01/29/SP396.3" target="_blank" >http://sp.lyellcollection.org/content/early/2014/01/29/SP396.3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1144/SP396.3" target="_blank" >10.1144/SP396.3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Flow behaviour in the intra-caldera setting: an AMS study ofthe large (>1290 km3) Permian Ora ignimbrite

Popis výsledku v původním jazyce

Anisotropy of magnetic susceptibility (AMS) data reveals heterogeneous pyroclastic flow processes and variable flow directions within the intra-caldera setting of the Permian, rhyolitic, welded, Ora ignimbrite. Magnetic fabric is primary, orientated during the pyroclastic flow emplacement and is controlled by paramagnetic and ferromagnetic mineral phases. The ignimbrite has typically weak mean magnetic susceptibilities (1.32 - 21.8 x 10-4 SI) but with a large spread and low anisotropy degrees (1.003 - 1.023), which vary in different parts of the caldera. The intra-caldera magnetic fabric provides significant information on the dynamics of the intra-caldera setting, relating to changing vertical and lateral flow emplacement processes. AMS shape ellipsoids range from oblate to prolate, interpreted to reflect the heterogeneous nature of the flow resulting from the influence of underlying topography, constraints of the caldera walls, primary welding and post emplacement mineral growth. We

Název v anglickém jazyce

Flow behaviour in the intra-caldera setting: an AMS study ofthe large (>1290 km3) Permian Ora ignimbrite

Popis výsledku anglicky

Anisotropy of magnetic susceptibility (AMS) data reveals heterogeneous pyroclastic flow processes and variable flow directions within the intra-caldera setting of the Permian, rhyolitic, welded, Ora ignimbrite. Magnetic fabric is primary, orientated during the pyroclastic flow emplacement and is controlled by paramagnetic and ferromagnetic mineral phases. The ignimbrite has typically weak mean magnetic susceptibilities (1.32 - 21.8 x 10-4 SI) but with a large spread and low anisotropy degrees (1.003 - 1.023), which vary in different parts of the caldera. The intra-caldera magnetic fabric provides significant information on the dynamics of the intra-caldera setting, relating to changing vertical and lateral flow emplacement processes. AMS shape ellipsoids range from oblate to prolate, interpreted to reflect the heterogeneous nature of the flow resulting from the influence of underlying topography, constraints of the caldera walls, primary welding and post emplacement mineral growth. We

Druh

C - Kapitola v odborné knize

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

<a href="/cs/project/LK11202" target="_blank" >LK11202: Role paleozoických akrečních a kolizních orogénů na tvorbu a růst kontinentální kůry</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

The Use of Palaeomagnetism and Rock Magnetism to Understand Volcanic Processes

ISBN

978-1-86239-629-6

Počet stran výsledku

27

Strana od-do

177-204

Počet stran knihy

281

Název nakladatele

Geological Society, London, Special Publications

Místo vydání

London

Kód UT WoS kapitoly

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