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Statements

Subject Item
n2:RIV%2F67985530%3A_____%2F12%3A00381740%21RIV13-AV0-67985530
rdf:type
n5:Vysledek skos:Concept
dcterms:description
We present a palaeomagnetic study on 38 lava flows and 20 dykes encompassing the past 1.3 Myr on S. Jorge Island (Azores Archipelago—North Atlantic Ocean). The sections sampled in the southeastern and central/western parts of the island record reversed and normal polarities, respectively. They indicate a mean palaeomagnetic pole with a latitude shallower than that expected from Geocentric Axial Dipole assumption, suggesting an effect of non-dipolar components of the Earth magnetic field. Virtual Geomagnetic Poles of eight flows and two dykes closely follow the contemporaneous records of the Cobb Mountain Subchron (ODP/DSDP programs) and constrain the age transition from reversed to normal polarity. Volcano flank instabilities, probably related to dyke emplacement along an NNW–SSE direction, led to southwestward tilting of the lava pile towards the sea. We present a palaeomagnetic study on 38 lava flows and 20 dykes encompassing the past 1.3 Myr on S. Jorge Island (Azores Archipelago—North Atlantic Ocean). The sections sampled in the southeastern and central/western parts of the island record reversed and normal polarities, respectively. They indicate a mean palaeomagnetic pole with a latitude shallower than that expected from Geocentric Axial Dipole assumption, suggesting an effect of non-dipolar components of the Earth magnetic field. Virtual Geomagnetic Poles of eight flows and two dykes closely follow the contemporaneous records of the Cobb Mountain Subchron (ODP/DSDP programs) and constrain the age transition from reversed to normal polarity. Volcano flank instabilities, probably related to dyke emplacement along an NNW–SSE direction, led to southwestward tilting of the lava pile towards the sea.
dcterms:title
Palaeomagnetic study of a subaerial volcanic ridge (Sao Jorge Island, Azores) for the past 1.3 Myr: evidence for the CobbMountain Subchron, volcano flank instability and tectonomagmatic implications Palaeomagnetic study of a subaerial volcanic ridge (Sao Jorge Island, Azores) for the past 1.3 Myr: evidence for the CobbMountain Subchron, volcano flank instability and tectonomagmatic implications
skos:prefLabel
Palaeomagnetic study of a subaerial volcanic ridge (Sao Jorge Island, Azores) for the past 1.3 Myr: evidence for the CobbMountain Subchron, volcano flank instability and tectonomagmatic implications Palaeomagnetic study of a subaerial volcanic ridge (Sao Jorge Island, Azores) for the past 1.3 Myr: evidence for the CobbMountain Subchron, volcano flank instability and tectonomagmatic implications
skos:notation
RIV/67985530:_____/12:00381740!RIV13-AV0-67985530
n5:predkladatel
n16:ico%3A67985530
n3:aktivita
n13:Z
n3:aktivity
Z(AV0Z30120515)
n3:cisloPeriodika
3
n3:dodaniDat
n8:2013
n3:domaciTvurceVysledku
n19:3393100
n3:druhVysledku
n6:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
157615
n3:idVysledku
RIV/67985530:_____/12:00381740
n3:jazykVysledku
n18:eng
n3:klicovaSlova
palaeomagnetic secular variation; magnetostratigraphy; rock and mineral magnetism; Atlantic Ocean
n3:klicoveSlovo
n7:rock%20and%20mineral%20magnetism n7:palaeomagnetic%20secular%20variation n7:Atlantic%20Ocean n7:magnetostratigraphy
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[564184D0D513]
n3:nazevZdroje
Geophysical Journal International
n3:obor
n12:DB
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
7
n3:rokUplatneniVysledku
n8:2012
n3:svazekPeriodika
188
n3:tvurceVysledku
Henry, B. Marques, F. O. Silva, P. F. Hildenbrand, A. Kratinová, Zuzana Mériaux, C. A. Madureira, P.
n3:wos
000300567400014
n3:zamer
n14:AV0Z30120515
s:issn
0956-540X
s:numberOfPages
20
n9:doi
10.1111/j.1365-246X.2011.05320.x