Publication detail

Chemistry and Sr–Nd isotope signature of amphiboles of the magnesio-hastingsite-pargasite-kaersutite series in Cenozoic volcanic rocks: Insight into lithospheric mantle beneath the Bohemian Massif

ULRYCH, J. KRMÍČEK, L. TESCHNER, C. SKÁLA, R. ADAMOVIČ, J. ĎURIŠOVÁ, J. KŘÍŽOVÁ, Š. KUBOUŠKOVÁ S. RADOŇ, M.

Original Title

Chemistry and Sr–Nd isotope signature of amphiboles of the magnesio-hastingsite-pargasite-kaersutite series in Cenozoic volcanic rocks: Insight into lithospheric mantle beneath the Bohemian Massif

Type

journal article in Web of Science

Language

English

Original Abstract

Amphibole phenocrysts and xenocrysts from Cenozoic volcanic rocks of the Bohemian Massif (BM) belong to the magnesio-hastingsite-pargasite-kaersutite series. Their host rocks are mostly basaltic lavas, dykes and breccia pipe fills, less commonly also felsic rocks from rift zones along lithospheric block boundaries of the BM. The calculated p–T conditions suggest that almost all amphiboles crystallized in a relatively narrow temperature range (1020–1100 °C) at depths of 20–45 km (0.7–1.2 GPa) during the magma ascent. The initial 143Nd/144Nd and 87Sr/86Sr ratios of amphiboles (0.51266–0.51281 and 0.70328–0.70407, respectively) are similar to those of their whole rocks (0.51266–0.51288 and 0.70341–0.70462, respectively). This testifies to locally elevated proportions of recycled Variscan crustal material during melting of mantle peridotites rich in clinopyroxene–amphibole veins. These veins were formed by metasomatic fluids enriched in High Field Strength Elements and are isotopically similar to EM-1 mantle type.

Keywords

Bohemian Massif; Cenozoic volcanic rocks; Ti-amphibole; Sr–Nd isotopes; mantle metasomatism

Authors

ULRYCH, J.; KRMÍČEK, L.; TESCHNER, C.; SKÁLA, R.; ADAMOVIČ, J.; ĎURIŠOVÁ, J.; KŘÍŽOVÁ, Š.; KUBOUŠKOVÁ S.; RADOŇ, M.

Released

19. 7. 2018

Publisher

Elsevier

Location

Amsterdam

ISBN

0024-4937

Periodical

LITHOS

Year of study

312–313

Number

2018

State

Kingdom of Norway

Pages from

308

Pages to

321

Pages count

14

URL

https://www.sciencedirect.com/science/article/pii/S0024493718301749

BibTex

@article{BUT149609,
  author="Jaromír {Ulrych} and Lukáš {Krmíček} and Claudia {Teschner} and Skála {Roman} and Jiří {Adamovič} and Jana {Ďurišová} and Šárka {Křížová} and Simona {Kuboušková} and Miroslav {Radoň}",
  title="Chemistry and Sr–Nd isotope signature of amphiboles of the magnesio-hastingsite-pargasite-kaersutite series in Cenozoic volcanic rocks: Insight into lithospheric mantle beneath the Bohemian Massif",
  journal="LITHOS",
  year="2018",
  volume="312–313",
  number="2018",
  pages="308--321",
  doi="10.1016/j.lithos.2018.05.017",
  issn="0024-4937",
  url="https://www.sciencedirect.com/science/article/pii/S0024493718301749"
}