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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Flow behaviour in the intra-caldera setting: an AMS study ofthe large (>1290 km3) Permian Ora ignimbrite
Original language description
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
Czech name
—
Czech description
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Project
<a href="/en/project/LK11202" target="_blank" >LK11202: The role of Paleozoic accretionary and collisanal orogens on the formation and growth of continental crust</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Book/collection name
The Use of Palaeomagnetism and Rock Magnetism to Understand Volcanic Processes
ISBN
978-1-86239-629-6
Number of pages of the result
27
Pages from-to
177-204
Number of pages of the book
281
Publisher name
Geological Society, London, Special Publications
Place of publication
London
UT code for WoS chapter
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