Neoproterozoic Volhynia-Brest magmatic province in the western East European craton: Within-plate magmatism in an ancient suture zone

Носова, А. А.; Kuzmenkova, Oksana; Veretennikov, N. V.; Petrova, L. G.; Levsky, L. K.

doi:10.1134/s086959110802001x

Cited by 31 publications

(15 citation statements)

References 40 publications

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“…Bryan and Ernst, 2008). LIP magmatism, particularly that pertaining to the breakup of Rodinia, has also been associated with one or several mantle plumes (Burke and Dewey, 1973;Puffer, 2002;Nosova et al, 2008;Li et al, 2008Li et al, , 2013. Late Neoproterozoic rift-related igneous rocks in different tectonic levels at the western margin of Baltica overlap in age (Fig.…”

Section: Age Of the Kicmentioning

confidence: 96%

Root zone of a continental rift: the Neoproterozoic Kebnekaise Intrusive Complex, northern Swedish Caledonides

Kirsch

Svenningsen²

2015

GFF

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Mafic magmatic rocks formed between ca. 615 and 560 Ma along the Neoproterozoic margins of Baltica and Laurentia are classically attributed to continental rifting heralding the opening of the Iapetus Ocean. We report new data for the Kebnekaise Intrusive Complex (KIC) exposed in the Seve Nappes in northern Sweden. The KIC consists of sheeted dolerite dykes and gabbroic bodies with mutually intrusive relations. Major and trace element data exhibit a transitional-to normal-mid-ocean-ridge basalt-type geochemical signature. Differentiation processes and late-stage liquid immiscibility of a tholeiitic melt are considered to account for the compositional range exhibited by the KIC igneous rocks. U/Pb SIMS geochronological data from zircon rims yield an emplacement age of 578^9 Ma. The KIC is thus younger and more depleted than coeval mafic rocks found in the Seve Nappe, and is interpreted to represent a highlevel magma plumbing system in a late-stage continental rift. The composition and volume of rift-related igneous rocks in the Seve Nappes are inconsistent with a mantle plume origin, but are thought to record progressive lithospheric thinning and increasing involvement of an asthenospheric mantle component.

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Section: Age Of the Kicmentioning

confidence: 96%

Root zone of a continental rift: the Neoproterozoic Kebnekaise Intrusive Complex, northern Swedish Caledonides

Kirsch

Svenningsen²

2015

GFF

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“…Several recent studies of the magmatism associated with the break-up of Rodinia have ascribed the magmatism to a plume (Nosova et al 2008) or superplume (Puffer 2002;Li et al 2003Li et al , 2008. Li et al (2003) suggested that the c. 870 Ma and c. 845 Ma igneous activity in the Scottish Highlands and Scandinavian Caledonides might have been the first indications of a superplume marking the initial breakup of Rodinia, although widespread plume activity did not happen until c. 825 Ma.…”

Section: Discussionmentioning

confidence: 99%

Geochemical evolution of Dalradian metavolcanic rocks: implications for the break-up of the Rodinia supercontinent

Fettes

Macdonald

Fitton

et al. 2011

JGS

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“…These early studies (conf. Białowolska et al, 2002 for references) were carried out on rocks from the Volyn outcrops, later also on the core materials from Belarus, Poland and Ukraine (Ushakova, 1962;Juskowiak and Ryka, 1967;Маkhnach and Veretennikov, 1970;Juskowiakowa, 1971;Compston et al, 1995;Białowolska et al, 2002;Bakun-Czubarow et al, 2002;Emetz et al, 2004;Kuzmenkova, 2007;Nosova et al, 2008;Kuzmenkova, 2011;and many others).…”

Section: Study Areamentioning

confidence: 99%

“…Geochemical studies identified the trap rocks as within plate continental basalts and documented vertical zonation of the trap: picrobasalts and subalkaline olivine basalts in the lower basalt flows are covered locally (Figure 1) by felsic rocks (andesite, dacite, rhyodacite, trachyandesite), and tholeiites dominate the upper flows, all accompanied by more or less abundant tuffs (Bakun-Czubarow et al, 2002;Kuzmenkova et al, 2008;Nosova et al, 2008).…”

Section: Study Areamentioning

confidence: 99%

Hydrothermal alteration of the Ediacaran Volyn-Brest volcanics on the western margin of the East European Craton

Środoń

Kuzmenkova²,

Staněk

et al. 2019

Precambrian Research

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The Ediacaran continental flood basalts and associated tuffs were studied to identify and quantify alteration processes by means of XRD and chemistry, supplemented by Mössbauer and FTIR spectroscopies, petrography, oxygen and iron isotopes, K-Ar dating, and organic geochemistry. Two superimposed alteration processes were identified: the Ediacaran hydrothermal alteration, induced by meteoric waters, heated and put in motion by the cooling basalt, and the Caledonian and/or Variscan potassic alteration. The degree of basalt alteration was quantified using as an index the sum of primary minerals in the bulk rock. The sequence of minerals dissolved and crystallized during the hydrothermal alteration was established. The alteration resulted in the loss of Ca (dissolution of plagioclases), compensated by the gain of water and Mg (crystallization of clays), and proceeded from the edges of the basalt flows in an oxidizing environment, evidenced by the increasing amount of hematite and Fe 3+ /Fe 2+ ratio of the bulk rock. Cyanobacteria were active in the hydrothermal system, most probably responsible for the measured negative  56 Fe values and more reducing conditions at the stage of intense alteration. Chlorophaeite (palagonite), following quartz as the earliest petrographically identifiable basalt alteration product was found to vary systematically from fully isotropic to birefringent. The chlorophaeite was identified as a mixture of Femontmorillonite and Fe-saponite, identical with griffithite and oxysmectites, probably preceded by a finer-grained ferrosaponite at the isotropic stage. REE content of chlorophaeite indicates basaltic volcanic glass (sideromelane) as the major source of material. REE in clays are contained mostly in the dioctahedral smectite, while in the bulk rock mostly in phosphates. The smectite characteristics and Mg enrichment are indicative of the hydrothermal basalt alteration process, which perhaps was dominant also on Mars. Both mineral and chemical composition of tuffs vary continuously from basaltic to felsic, the latter close to the measured rhyodacite composition, dominated by quartz and feldspars. The basaltic tuffs resemble the most altered basalts but contain also abundant albite and chlorite, indicative of higher alteration temperatures, up to 220 o C. Tuff composition indicates stronger component of felsic volcanism in the trap formation than evidenced by the preserved bodies of effusive rocks.

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Neoproterozoic Volhynia-Brest magmatic province in the western East European craton: Within-plate magmatism in an ancient suture zone

Cited by 31 publications

References 40 publications

Root zone of a continental rift: the Neoproterozoic Kebnekaise Intrusive Complex, northern Swedish Caledonides

Root zone of a continental rift: the Neoproterozoic Kebnekaise Intrusive Complex, northern Swedish Caledonides

Geochemical evolution of Dalradian metavolcanic rocks: implications for the break-up of the Rodinia supercontinent

Hydrothermal alteration of the Ediacaran Volyn-Brest volcanics on the western margin of the East European Craton

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