Opening of the central Atlantic and asymmetric mantle upwelling phenomena: Implications for long-lived magmatism in western North Africa and Europe

Oyarzún, Roberto; Doblas, Miguel; López-Ruiz, José; Cebrá, José María

doi:10.1130/0091-7613(1997)025<0727:ootcaa>2.3.co;2

Cited by 117 publications

(71 citation statements)

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“…The Central Atlantic magmatic province produced voluminous tholeiitic volcanism at c. 200 Ma (Nomade et al, 2007), which has been widely linked to the arrival of a mantle plume (Oyarzun et al, 1997), whilst the Karoo -Ferrar provinces had major basaltic volcanism at c. 182 Ma (Riley and Knight 2001). The Chon Aike province was almost entirely silicic and was characterized by two main peaks of volcanism at c. 183 Ma and c. 170 Ma (Pankhurst et al, 2000;Hunter et al, 2006).…”

Section: Coincidence Of Plume Events and Accretionmentioning

confidence: 99%

New Rb-Sr mineral ages temporally link plume events with accretion at the margin of Gondwana

Flowerdew¹,

Daly²,

Riley³

2007

Open-File Report

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Five of six Rb-Sr muscovite mineral isochron ages from the Scotia Metamorphic Complex of the South Orkney Islands, West Antarctica, average 190 ± 4 Ma. The muscovite ages are interpreted to date foliation-formation and thus also accretion and subduction at the Gondwana margin. Coincident picrite and ferropicrite magmatism, indicative of melts from deep-seated depleted mantle, permits a causative link between accretion and the arrival of the Karoo -Ferrar -Chon Aike mantle plume in the Early Jurassic. Three biotite Rb-Sr mineral isochron ages are consistently younger and average 176 ± 5 Ma. The biotite ages may record post-metamorphic cooling or more likely retrogressive metamorphic effects during uplift.

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Section: Coincidence Of Plume Events and Accretionmentioning

confidence: 99%

New Rb-Sr mineral ages temporally link plume events with accretion at the margin of Gondwana

Flowerdew¹,

Daly²,

Riley³

2007

Open-File Report

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“…It is remarkable that the enriched, HIMU-like mantle component was detected also in earlier, pre-Neogene volcanic rocks of this region (Veneto region, Macera et al 2003;Dinarides, Cvetković et al 2004;CarpathianPannonian region, Harangi 1994;Harangi et al 2003) that may imply its long-lasting (at least from the Early Cretaceous) presence beneath Europe. Oyarzun et al (1997) and suggested that this enriched mantle component could be derived from the Mesozoic Central Atlantic plume deflected either due to the suction of the European thin-spots or due to the north-eastward motion of the African plate. In any case, portions of the deflected plume material could have polluted the shallow upper mantle beneath Europe since the Early Cretaceous.…”

Section: Geodynamic Implicationsmentioning

confidence: 99%

Tertiary-Quaternary subduction processes and related magmatism in the Alpine-Mediterranean region

Harangi

Downes

Seghedi³

2006

Memoirs

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“…The al ka line vol ca nism in rifted ar eas of Central Eu rope may be re lated to "hot man tle fin gers" sup plied from an asthenospheric res er voir ex ist ing un der Eu rope at least since the Early Cre ta ceous (Harangi et al, 2003), though these au thors did not ex clude a stretch ing model. The man tle fin gers are be lieved to rep re sent pe riph eral branches of hot man tle plumes re spon si ble for open ing of the North-At lan tic Ba sin (e.g., Oyarzun et al, 1997;Wil son, 1997). How ever, re cently Spišiak et al (2011) pro posed an extensional model to ex plain vol ca nic ac tiv ity in the Cen tral West ern and Outer West ern Carpathians.…”

Section: Regional Comparison and Considerationsmentioning

confidence: 99%

Early Cretaceous intra-plate volcanism in the Pieniny Klippen Belt – a case study of the Velykyi Kamenets’/Vilkhivchyk (Ukraine) and Biała Woda (Poland) sections

Oszczypko

Salata

Krobicki

2012

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(2012) -Early Cre ta ceous intra-plate vol ca nism in the Pieniny Klippen Belt -a case study of the Velykyi Kamenets'/Vilkhivchyk (Ukraine) and Biała Woda (Po land) sec tions. Geol. Quart., 56 (4): 629-648, doi: 10.7306/gq.1045The geo log i cal po si tion and geo chem is try of the ba saltic sill and tuffs oc cur ring within the Berriasian-?Albian pe lagic lime stones of the Czorsztyn Suc ces sion are de scribed. The vol ca nic rock suc ces sion of the Velykyi (= Veliky) Kamenets'/Vilkhivchyk (= Vulkhovchik, Vulhovchik, Olkhivchyk) sites is re lated to intra-plate sub ma rine vol ca nism, which took place at the south east ern ter mi na tion of the Pieniny Klippen Belt. This vol ca nism was prob a bly as so ci ated with the Early Cre ta ceous open ing of the Magura/Fore-Magura basinal sys tem, bounded by the Silesian/Marmarosh and Czorsztyn palaeoridges to the north and south re spec tively. The al ka line vol ca nic rocks from the Velykyi Kamenets'/Vilkhivchyk sites are geochemically similar to the ba saltic block from Biała Woda (Małe Pieniny Mts., Poland), which is an olistolith a few metres across within the Jarmuta con glom er ates (Maastrichtian/Paleocene). This ba saltic block was eroded from the fron tal part of the Czorsztyn Nappe and was de pos ited in the up per most part of the Grajcarek Suc ces sion at the southeast ern mar gin of the Magura Ba sin.Nestor Oszczypko and Dorota Salata, In sti tute of Geo log i cal Sci ences, Jagiellonian Uni ver sity,

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Opening of the central Atlantic and asymmetric mantle upwelling phenomena: Implications for long-lived magmatism in western North Africa and Europe

Cited by 117 publications

References 0 publications

New Rb-Sr mineral ages temporally link plume events with accretion at the margin of Gondwana

New Rb-Sr mineral ages temporally link plume events with accretion at the margin of Gondwana

Tertiary-Quaternary subduction processes and related magmatism in the Alpine-Mediterranean region

Early Cretaceous intra-plate volcanism in the Pieniny Klippen Belt – a case study of the Velykyi Kamenets’/Vilkhivchyk (Ukraine) and Biała Woda (Poland) sections

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