DC pole | Wartość | Język |
dc.contributor.author | Szopa, Krzysztof | - |
dc.contributor.author | Włodyka, Roman | - |
dc.contributor.author | Chew, David | - |
dc.date.accessioned | 2018-05-04T09:40:42Z | - |
dc.date.available | 2018-05-04T09:40:42Z | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | Geologica Carpathica, Vol. 65, no. 4 (2014), s. 273-284 | pl_PL |
dc.identifier.issn | 1335-0552 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/3318 | - |
dc.description.abstract | The main products of volcanic activity in the teschenite-picrite association (TPA) are shallow, sub-volcanic intrusions, which predominate over extrusive volcanic rocks. They comprise a wide range of intrusive rocks which fall into two main groups: Alkaline (teschenite, picrite, syenite, lamprophyre) and subalkaline (dolerite). Previous 40Ar/39Ar and 40K/40Ar dating of these rocks in the Polish Outer Western Carpathians, performed on kaersutite, sub-silicic diopside, phlogopite/biotite as well as on whole rock samples has yielded Early Cretaceous ages. Fluorapatite crystals were dated by the U-Pb LA-ICP-MS method to obtain the age of selected magmatic rocks (teschenite, lamprophyre) from the Cieszyn igneous province. Apatite-bearing samples from Boguszowice, Punców and Lipowa yield U-Pb ages of 103± 20 Ma, 119.6 ± 3.2 Ma and 126.5 ± 8.8 Ma, respectively. The weighted average age for all three samples is 117.8 ± 7.3 Ma (MSWD = 2.7). The considerably smaller dispersion in the apatite ages compared to the published amphibole and biotite ages is probably caused by the U-Pb system in apatite being less susceptible to the effects of hydrothermal alternation than the 40Ar/39Ar or 40K/40Ar system in amphibole and/or biotite. Available data suggest that volcanic activity in the Silesian Basin took place from 128 to 103 Ma with the the main magmatic phase constrained to 128-120 Ma. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa-Użycie niekomercyjne-Bez utworów zależnych 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/pl/ | * |
dc.subject | Apatite | pl_PL |
dc.subject | Cieszyn magmatic province | pl_PL |
dc.subject | Geochronology | pl_PL |
dc.subject | Outer western carpathians | pl_PL |
dc.subject | U-pb dating | pl_PL |
dc.subject | Silesia | pl_PL |
dc.subject | Hydrothermal activity | pl_PL |
dc.subject | Cretaceous | pl_PL |
dc.title | LA-ICP-MS U-Pb apatite dating of Lower Cretaceous rocks from teschenite-picrite association in the Silesian Unit (southern Poland) | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.2478/geoca-2014-0018 | - |
Pojawia się w kolekcji: | Artykuły (WNP)
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