Találati lista | Tudóstér

001-es BibID:	BIBFORM132796
035-os BibID:	(Scopus)85103151848 (WoS)000634443000001
Első szerző:	Püspöki Zoltán (geológus)
Cím:	Fluvial magnetic susceptibility as a proxy for long-term variations of mountain permafrost development in the Alp-Carpathian region / Zoltán Püspöki, Philip Leonard Gibbard, Annamária Nádor, Edit Thamó-Bozsó, Pál Sümegi, Tímea Fogarassy-Pummer, Richard William Mcintosh, Miklós Lantos, Ágnes Tóth-Makk, Ferenc Stercel, Zita Krassay, Péter Kovács, Teodóra Szőcs, Tamás Fancsik
Dátum:	2021
ISSN:	0300-9483
Megjegyzések:	Low field magnetic susceptibility (MS) records of 13 reference boreholes representing the whole Quaternary fluvial succession of the Great Hungarian Plain were correlated to develop regional stratigraphy. Data from 12 of the boreholes were published between 2016 and 2020, the Tiszainoka borehole is newly reported in this paper. Eleven magnetic susceptibility cycles, capped by the most emergent master MS peaks (MP) and bordered by susceptibility termination surfaces, have been correlated. Supported by the already evaluated palaeomagnetic reversals and instability events, MPs have been correlated to the cold stages of the Marine Isotope Stage (MIS) records. MPs represent MIS 104, 100, 98, 82, 60, 52, 34( 36) and 26 of increased heavy oxygen isotope value, constituting the significant Early Pleistocene glaciations, and MIS 18, 16, 12, 8, 6 and 2 mostly representing the substantial Middle and Upper Pleistocene European glaciation events. The interpretation of early postglacial fluvialMSmaxima,which emphasizes the escape ofweathering-sensitivemagnetic minerals fromthe catchment area triggered by the thawing of mountain permafrost, is confirmed by the correlation of MPs to the changes of the global ice volume. As a result, fluvial MS records can be considered as a proxy for mountain permafrost development in the catchment areas. Regional correlations confirmed that the K?or?os and J aszs ag Basins and the Mak o Trough are sites of almost continuous fluvial records of the past 2600 ka. Thus, the Pannonian Quaternary fluvial succession is sufficiently complete to provide a satisfactory record of mountain permafrost development of the Alp-Carpathian region, the latter being a globally relevant European representative of mid-latitude mountain regions. The similarity of the Pannonian fluvial MS succession as a permafrost proxy to the marine ice-rafted detritus (IRD) and Chinese loess/palaeosol MS records promises the possibility of comparative investigations of globally relevant proxy records and mid-latitude mountain permafrost development.
Tárgyszavak:	Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Boreas. - 50 : 3 (2021), p. 806-825. -
További szerzők:	Gibbard, Philip L. Nádor Annamária Thamó-Bozsó Edit Sümegi Pál (1960-) (geológus, régész) Fogarassy-Pummer Tímea (1991-) (geológus) McIntosh, Richard William (1978-) (geológus) Lantos Miklós Tóth-Makk Ágnes Stercel Ferenc Krassay Zita Kovács Péter Szőcs Teodóra Fancsik Tamás
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM103286
035-os BibID:	(WOS)000487879800001 (Scopus)85073958239
Első szerző:	Püspöki Zoltán (geológus)
Cím:	High-resolution stratigraphy of a Quaternary fluvial deposit based on magnetic susceptibility variations (Jászság Basin, Hungary) / Zoltán Püspöki, Tímea Fogarassy-Pummer, Edit Thamó-Bozsó, Bernadett Berényi, Ágnes Cserkész-Nagy, Bálint Szappanos, Emő Márton, Zoltán Lantos, Annamária Nádor, Tamás Fancsik, Ferenc Stercel, Ágnes Tóth-Makk, Richard W. McIntosh, Teodóra Szőcs, Enikő Faragó
Dátum:	2019
ISSN:	0300-9483
Megjegyzések:	Quaternary fluvial succession of the Jaszsag Basin (Hungary) was investigated, challenging the stratigraphical potential of 'early postglacial fluvial magnetic susceptibility episodes' recognized earlier in the Koros Basin. Low field magnetic susceptibility (MS) was measured in four boreholes from the basin centre and margins, representing channel and flood-plain environments. Statistical distributions of MS data contain significant sets of outliers, regardless of facies conditions. The downhole distribution of these outliers produces magnetic susceptibility cycles. Supported by magnetic susceptibility cycles, high-resolution facies correlations were performed reflecting a steady palaeohydrographical situation in the area, with a trunk river to the southeast and tributaries to the northwest. SEM-EDX data revealed that ferromagnetic grains are responsible for the outlying MS values. The heterogeneous association of magnetite indicates a catchment area with volcanic and metamorphic rocks, while the group of small (<5 mu m) magnetite octahedrons originated from nearby rhyolitic tuff formations. Magnetic grains were transported along channel belts, while small (<2 mu m) magnetic particles were floated onto flood-plains attached to clays. Climatic control is indicated by peaks at similar to 100 ka frequency in spectra of MS records and was also detected in palaeosol development and in flood frequency using the spectra of measured colour (similar to 100 ka) and logged resistivity (similar to 100 ka, similar to 41 ka), respectively. The climate-dependent MS signal traceable far into the basin in both channel and flood-plain environments can be summoned when the Quaternary fluvial succession of the Pannonian Basin is investigated, assuming some sources of magnetite in the catchment areas. According to the concept of 'fluvial magnetic susceptibility episodes', the early postglacial escape and spreading of the magnetite fraction control the MS signal that can support mapping of the unconformable Quaternary base and building of high-resolution models of aquifers.
Tárgyszavak:	Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Boreas. - 49 : 1 (2019), p. 181-199. -
További szerzők:	Fogarassy-Pummer Tímea (1991-) (geológus) Thamó-Bozsó Edit Berényi Bernadett Cserkész-Nagy Ágnes Szappanos Bálint Márton Emő Lantos Zoltán Nádor Annamária Fancsik Tamás Stercel Ferenc Tóth-Makk Ágnes McIntosh, Richard William (1978-) (geológus) Szőcs Teodóra Faragó Enikő (1991-) (geológus)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM088325
035-os BibID:	(WoS)000575497700001 (Scopus)85092106990
Első szerző:	Püspöki Zoltán (geológus)
Cím:	High-resolution stratigraphy of Quaternary fluvial deposits in the Makó Trough and the Danube-Tisza Interfluve, Hungary, based on magnetic susceptibility data / Zoltán Püspöki, Tímea Fogarassy-Pummer, Edit Thamó-Bozsó, György Falus, Ágnes Cserkész-Nagy, Bálint Szappanos, Emő Márton, Zoltán Lantos, Szilárd Szabó, Ferenc Stercel, Ágnes Tóth-Makk, Richard W. Mcintosh, Teodóra Szőcs, Péter Pálóczy, Tamás Fancsik
Dátum:	2021
ISSN:	0300-9483
Megjegyzések:	High-resolution stratigraphical architecture of a Quaternary fluvial succession in the Mako Trough and the Danube-Tisza Interfluve (Pannonian Basin, Hungary) was investigated based on low field magnetic susceptibility (MS) measurements of seven fully cored boreholes, interpreted on the basis of the early postglacial magnetic susceptibility episodes previously described in the Koros and Jaszsag Basins. To confirm the reliability of the Devavanya and VesztoMSrecords (Koros Basin), the published magnetostratigraphical data were re-investigated revealing the consequent arrangement of theMSpeaks correlated with the Jingbian section and the short-lived polarity reversals correlated with the Geomagnetic Instability Time Scale. The Quaternary climatic regime in the Koros Basin begins in the late Pliocene at 2.7 Ma. The correlation between the Koros Basin (Devavanya) and Mako Trough (Mindszent) was confirmed by the multi-proxy spectral investigation of the Mindszent section, revealing similar to 100- and similar to 41-ka cycles in theMS, colour, logged spontaneous potential and resistivity records. Based onMSrecords of the seven boreholes, the base of the Quaternary can be identified irrespective of the facies, age and climatic phase of the lowermost Quaternary strata. By performingMSand log correlation of 131 boreholes, extended unconformities were detected in the Quaternary profiles in the Danube-Tisza Interfluve (similar to 1070 +/- 10, similar to 1920 +/- 10 and similar to 2300 +/- 10 ka) interpreted as sequence boundaries. Sedimentological and mineralogical data reveal a significant change at similar to 725-606 ka likely as a response to the 'mid-Pleistocene transition', leading to the multiple branching of the Danube.SEMdata revealed that ilmenite is also responsible for the development of the early postglacial magnetic susceptibility episodes. This increases the stratigraphical potential of fluvial successions with catchment area that contain metamorphic rocks. A gradual retreat of permafrost zone determines long-term temporal trends of the climatically controlled fluvial magnetic susceptibility episodes, causing upward decreasing trends in the time series.
Tárgyszavak:	Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Boreas. - 50 : 1 (2021), p. 205-223. -
További szerzők:	Fogarassy-Pummer Tímea (1991-) (geológus) Thamó-Bozsó Edit Falus György (Budapest) Cserkész-Nagy Ágnes Szappanos Bálint Márton Emő Lantos Zoltán Szabó Szilárd (1974-) (geográfus) Stercel Ferenc Tóth-Makk Ágnes McIntosh, Richard William (1978-) (geológus) Szőcs Teodóra Pálóczy Péter Fancsik Tamás
Pályázati támogatás:	NKFIH-OTKA K-131353 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: