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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
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2.

001-es BibID:BIBFORM127815
035-os BibID:(WoS)001354466700001 (Scopus)85208426943
Első szerző:Püspöki Zoltán (geológus)
Cím:A quasi-continuous long-term (5 Ma) Mid-European mountain permafrost record based on fluvial magnetic susceptibility and its contribution to the explanation of Plio-Pleistocene glaciations / Püspöki, Zoltán; Markos, Gábor; Fancsik, Tamás; Bereczki, László; Kiss, László Ferenc; Thamó-Bozsó, Edit; Krassay, Zita; Kovács, Péter; McIntosh, Richard W.; Vári, Zoltán; Stercel, Ferenc; Lantos, Zoltán; Maigut, Vera; Sári, Katalin; Rásonyi, Miklós; Gibbard, Philip L.
Dátum:2024
ISSN:0300-9483
Megjegyzések:The low field magnetic susceptibility (?LF) measured in the 1116-m-long Dévaványa core (Pannonian Basin) is a quasi-continuous record of the Plio?Pleistocene Mid-European mountain permafrost development. The continuity of fluvial conditions is confirmed by seismic data, and the detrital origin of magnetite is indicated by frequency-dependent susceptibility measurements, scanning electron microscope, and hysteresis investigations. The ?LF record is correlated to the ?18O curve (LR04) supported by palaeomagnetic data. The colour of samples documents precession and obliquity cycles in local facies variations, but the ?LF indicates the dominance of 100-ka eccentricity cycles in the linked mountainous permafrost events. Comparison with orbital solutions revealed that the long-term development of permafrost occurs as a result of amplitude modulation of the 100-ka eccentricity cycles. Increases in amplitude of the 100-ka cycles inhibits permafrost development due to shortened winters. Thus, if extremes are present, the permafrost regions are limited or disappear, but if the 100-ka eccentricity cycles are attenuated, permanent frost can extend into the temperate zone. This amplitude modulation may also be responsible for the early glaciations during the Pliocene, for the intensification of Northern Hemisphere glaciation, foreshadows cooling in the forthcoming 405-ka term, and allows the change from 41-ka cycles to 100-ka ones in the Mid-Pleistocene Transition to be explained. The 41-ka cycles are the result of obliquity-controlled changes close to the polar cycles, while 100-ka cycles occur when the amplitude attenuation of the 100-ka eccentricity cycles enables extended glaciations that suppress the regular 41-ka cycles. Higher mountains in the catchments enable higher resolution of permafrost records documenting even smaller glaciations. However, the similarities in the overall trends in ?LF records of catchment areas with 1500-m difference in their altitude is a potential counter-argument when considering the role of tectonic elevations in the expansions of mountainous permafrost.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
eccentricity
frequency dependence
glaciation
hysteresis
magnetic susceptibility
magnetite
mountain region
permafrost
Pleistocene
Pliocene
scanning electron microscopy
seismic data
Megjelenés:Boreas. - 54 : 1 (2024), p. 156-177. -
További szerzők:Markos Gábor Fancsik Tamás Bereczki László Kiss László Ferenc Thamó-Bozsó Edit Krassay Zita Kovács Péter McIntosh, Richard William (1978-) (geológus) Vári Zoltán Stercel Ferenc Lantos Zoltán Maigut Vera Sári Katalin Raspagliesi, Francesco Gibbard, Philip L.
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3.

001-es BibID:BIBFORM113616
035-os BibID:(Scopus)85159930400 (Wos)000994047500001
Első szerző:Püspöki Zoltán (geológus)
Cím:Obliquity-driven mountain permafrost-related fluvial magnetic susceptibility cycles in the Quaternary mid-latitude long-term (2.5 Ma) fluvial Maros Fan in the Pannonian Basin / Püspöki Zoltán, Gibbard, Philip L., Kiss László Ferenc, McIntosh, Richard W., Thamó-Bozsó Edit, Krassay Zita, Szappanos Bálint, Maigut, Vera, Kovács Péter, Karácsony Dominik, Stercel Ferenc, Visnovitz Ferenc, Demény Krisztina, Bereczki László, Szőcs Teodóra, Rotár-Szalkai Ágnes, Fancsik Tamás
Dátum:2023
ISSN:0300-9483
Megjegyzések:Magnetic susceptibility (MS) of the Quaternary long-term mid-latitude Maros fluvial fan (Pannonian Basin) was recorded to understand the stratigraphical features of source-proximal fluvial depositional settings. Three fully cored 500-m-deep boreholes were sampled at 0.5-m intervals; low-field and frequency dependent MS were measured, and complementary hysteresis and SEM-EDAX investigations were performed on selected samples. Logged susceptibility data were also used to log correlations established by a simultaneous comparison of wireline log and laboratory measurements. Time-series analyses of the susceptibility records reveal a similar to 41-ka and similar to 100-ka cyclicity. Towards the source-distal sections the intensity of the similar to 41-ka cycles decreases, while that of the similar to 100-ka cycles remains strong. Stratigraphical and spectral similarities were observed between the Maros fluvial fan and Chinese loess records; however, based on complementary magnetic data, the magnetic phase of the Maros Fan sections is related to the detrital magnetite that originates from the catchment during early postglacial permafrost degradations. The amplification of the similar to 41-ka cycles can be attributed to the very high susceptibility values in source-proximal settings and to the special stratigraphical feature of the distributive fluvial systems. This comprises the increased avulsion frequency on the fluvial fans in 'glacial recession periods', in concert with the 'early postglacial' occurrence of the permafrost-related magnetite originating from the catchment. As a local phenomenon, this is significant since it records the obliquity-driven variations in permafrost development in a catchment. However, fluvial and alluvial fans are widespread depositional landforms within the Eurasian mountain range and were possibly the same during the Quaternary deglaciations. Thus, obliquity-driven magnetic susceptibility variations in source-proximal fan deposits attached or adjacent to regions of loess deposition should also be considered when scanning for potential source material of aeolian deposits.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Boreas. - 52 : 3 (2023), p. 402-426. -
További szerzők:Gibbard, Philip L. Kiss László Ferenc McIntosh, Richard William (1978-) (geológus) Thamó-Bozsó Edit Krassay Zita Szappanos Bálint Maigut Vera Kovács Péter Karácsony Dominik Stercel Ferenc Visnovitz Ferenc Demény Krisztina Bereczki László Szőcs Teodóra Rotár-Szalkai, Ágnes Fancsik Tamás
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4.

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)
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5.

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
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6.

001-es BibID:BIBFORM081286
Első szerző:Püspöki Zoltán (geológus)
Cím:Magnetic susceptibility as a possible correlation tool in Quaternary alluvial stratigraphy / Zoltán Püspöki, István J. Kovács, Tamás Fancsik, Annamária Nádor, Edit Thamó?Bozsó, Ágnes Tóth?Makk, Beatrix Udvardi, Péter Kónya, Judit Füri, Zsolt Bendő, László Zilahi?Sebess, Ferenc Stercel, Ágnes Gulyás, Richard W. Mcintosh
Dátum:2016
ISSN:0300-9483
Megjegyzések:Correlation of the fluvial magnetic susceptibility (MS) record of borehole Devavanya?1 in the Körös Basin (eastern Hungary) with Chinese aeolian MS records (Jingbian, Lingtai) and the marine [delta]18O record from the Equatorial Pacific (V28?239) is established here based on cross?correlations and singular spectral analysis. A basin?scale well?to?well correlation based on magnetic susceptibility records was also performed involving unpublished cores. To refine the age model, a Monte Carlo simulation was conducted using the Chinese Jingbian section as a tuning target. Spectral analysis of the tuned record revealed c. 400, c. 100 and c. 41 ka cycles over the 2.5 million years of the Quaternary fluvial succession. To ensure a complementary palaeoclimate proxy, the full width at half maximum of smectites was measured as a facies?independent indicator of weathering intensity. This investigation was carried out on a subset of samples involved in MS measurements representing a c. 400 ka time interval across the top of the Olduvai subchron. A phase?shift between MS and weathering intensity recorded in the clay mineralogy indicates different response times of the considered proxies. The fluvial MS record is determined by the climatic control on delivery and preservation of magnetic minerals, mainly of magnetite. Under cold?and?dry climate these minerals were released owing to frost shattering in the adjacent hinterlands and were transported to alluvial plains in the early postglacial periods thanks to the increasing discharge of rivers. With further warming the weathering?sensitive magnetic minerals soon disappeared from the soils of the catchment area and thus from the fluvial load. As a result, in fluvial successions early postglacial warmings are expressed by the occurrences of MS maxima (magnetic episodes), while the palaeotemperature maximum and the subsequent cooling remain concealed within the tract of low MS values. The early postglacial magnetic episodes may serve as ideal stratigraphical markers in regional and global correlations.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Boreas. - 45 : 4 (2016), p. 861-875. -
További szerzők:Kovács István János Fancsik Tamás Nádor Annamária Thamó-Bozsó Edit Tóth-Makk Ágnes Udvardi Beatrix (Budapest) Kónya Péter (1978-) (geográfus, geológia) Füri Judit Bendő Zsolt Zilahi-Sebess László Stercel Ferenc Gulyás Ágnes McIntosh, Richard William (1978-) (geológus)
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