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001-es BibID:	BIBFORM121536
035-os BibID:	(Scopus)85189771065 (WoS)001228001400001
Első szerző:	Koutecký, Vít
Cím:	First evidence of Pinaceae and Fagaceae in the fossil wood record of the Ceske stredohori Mts. (Czech Republic): A comprehensive study of fossiliferous sites in pyroclastic rocks surrounding the late Oligocene Mila stratovolcano / Vít Koutecký, Jakub Myslivecek, Vladislav Rapprich, Frantisek Laufek, Zsolt Benkő, Jakub Sakala
Dátum:	2024
ISSN:	0034-6667
Megjegyzések:	A comprehensive anatomical and mineralogical study of fossil wood fragments from fields in the vicinity of Becov and Brvany villages (NW Bohemia, Czech Republic) indicates that Taxodioxylon gypsaceum (Cupressaceae s.l.) predominates, but also identifies another coniferous wood: Pinuxylon parryoides (Pinaceae) and three angiosperms Quercoxylon bockhianum, Castanoxylon bavaricum and Lithocarpoxylon sp. (all Fagaceae). This paper therefore presents the first occurrence of Pinaceae and Fagaceae fossil wood in the volcanic rocks of the Ceske Stredohori Mts. as well as its youngest palaeobotanical record in general, late Oligocene in age (26.56 +/- 0.38 Ma). The samples were buried by alkaline pyroclastic deposits and were mineralized by carbonates. Two distinct depositional processes burying the fossil woods were identified. Closer to the vent, the woods occur in a near-vent pyroclastic fall deposits of the former pyroclastic cone, whereas more distant sites consist of pyroclastic flow deposits. Carbonate mineralization mostly consists of dolomite, but subordinate amounts of magnesite (likely the first time this is documented in fossil wood) as well as calcite and siderite are present. Only one sample collected in the same area, bearing clear signs of riverbed transport (Lithocarpoxylon sp.), was perfectly silicified, but its origin remains unclear.
Tárgyszavak:	Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Fossil wood Pyroclastic burial Wood mineralization Ceske Stredohori Volcanic Complex Bohemian Massif Oligocene
Megjelenés:	Review Of Palaeobotany And Palynology. - 325 (2024), p. 1-21. -
További szerzők:	Mysliveček, Jakub Rapprich, Vladislav Laufek, František Benkó Zsolt (1980-) (geológus) Sakala, Jakub
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM117027
035-os BibID:	(WoS)001146683000001 (Scopus)85169059359
Első szerző:	Mysliveček, Jakub
Cím:	Zeolitized fossil woods from alkaline volcaniclastic rocks : Unravelling an uncommon mineralization process / Jakub Mysliveček, Vít Koutecký, Vladislav Rapprich, Jakub Sakala, John M. Hora, František Laufek, Ondřej Pour, Zsolt Benkó, Tomáš Magna
Dátum:	2023
ISSN:	0009-2819
Megjegyzések:	Mineralization of fossil woods with unusual mineral phases remains an underconstrained process despite its relatively common occurrences. Aside from common mineralization agents such as silica or carbonates, there are also atypical mineralization associations, such as zeolite-group phases, but the zeolitization process has not yet been investigated in detail. We studied zeolitized woods collected from two localities in the Cenozoic alkaline České Středohoří Volcanic Complex (Ohre Rift, Czech Republic), where fossil woods of diverse paleobotanical classification were deposited in volcaniclastic rocks of the same origin (lahar) and stratigraphic formation (Upper Oligocene). The identical geological setting allowed the investigation of potential variables influencing this type of mineralization by combining paleobotanical classification, detailed mineralogy, mineral chemistry, geochemistry, Sr isotope analysis and K[sbnd]Ar chronology. The new results demonstrate the significant potential of fossil woods mineralized with zeolite-group minerals to be used to reconstruct the formation and deposition conditions of the lahars in which these woods are contained. The composition of zeolites is strongly dependent on thermal conditions and material exchange between wood and host rocks. Dominant mineral phases are phillipsite and chabazite in variable proportions. The phillipsite/chabazite ratio correlates well with the magnitude of the Eu anomaly, suggesting crystallization of phillipsite at a higher temperature under hot-lahar conditions of deposition. Chabazite lacking an Eu anomaly represents the later, colder mineralization stage. The 87Sr/86Sr ratios ranging 0.7042-0.7047 provide an additional line of evidence of fluid derivation from volcaniclastic deposits of the Upper Oligocene Decin Fm.
Tárgyszavak:	Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk mineralization zeolites fossil wood České Středohoří volcanic complex lahar
Megjelenés:	Chemie Der Erde-Geochemistry. - 18 : 4 (2023), p. 1-14. -
További szerzők:	Koutecký, Vít Rapprich, Vladislav Sakala, Jakub Hora, John M. Laufek, František Pour, Ondřej Benkó Zsolt (1980-) (geológus) Magna, Tomáš
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM117025
035-os BibID:	(WoS)001017543100001 (Scopus)85163621250
Első szerző:	Rapprich, Vladislav
Cím:	Interactions between distal epiclastic and bio-chemogenic sedimentation at the foothills of a mafic alkaline volcano: The case of the Oligocene Doupovské Hory Volcanic Complex (Czech Republic) / Vladislav Rapprich, Pavel Čáp, Yulia V. Erban Kochergina, Eva Kadlecová, Zsolt Benkó, Jakub Sakala, Zuzana Rodovská, Jan Matějů, Daniel A. Petrash
Dátum:	2023
ISSN:	2055-4877
Tárgyszavak:	Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Depositional Record. - 9 : 4 (2023), p. 871-894. -
További szerzők:	Čáp, Pavel Kochergina, Yulia V. Erban Kadlecová, Eva Benkó Zsolt (1980-) (geológus) Sakala, Jakub Rodovská, Zuzana Matějů, Jan Petrash, Daniel A.
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