@article{MTMT:34746792, title = {Marine Strontium Isotope Evolution at the Triassic‐Jurassic Transition Links Transient Changes in Continental Weathering to Volcanism of the Central Atlantic Magmatic Province}, url = {https://m2.mtmt.hu/api/publication/34746792}, author = {Heszler, Bernát and Katchinoff, Joachim and Palcsu, László and Horváth, Anikó and Vallner, Zsolt and Kovács, Emma Blanka and Planavsky, Noah and Pálfy, József}, doi = {10.1029/2024GC011464}, journal-iso = {GEOCHEM GEOPHY GEOSY}, journal = {GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS}, volume = {25}, unique-id = {34746792}, abstract = {The end‐Triassic extinction (ETE) is one of the most severe biotic crises in the Phanerozoic. This event was synchronous with volcanism of the Central Atlantic Magmatic Province (CAMP), the ultimate cause of the extinction and related environmental perturbations. However, the continental weathering response to CAMP‐induced warming remains poorly constrained. Strontium isotope stratigraphy is a powerful correlation tool that can also provide insights into the changes in weathering regime, but the scarcity of 87 Sr/ 86 Sr data across the Triassic‐Jurassic boundary (TJB) hindered the use of this method. Here we present new high‐resolution 87 Sr/ 86 Sr data from bulk carbonates at Csővár, a continuous marine section that spans 2.5 Myrs across the TJB. We document a continuing decrease in 87 Sr/ 86 Sr ratio from the late Rhaetian to the ETE, terminated by a 300 kyr interval of a flat trend and followed by a transient increase in the early Hettangian that levels off. We suggest that the first in the series of perturbations is linked to the influx of non‐radiogenic Sr from the weathering of freshly erupted CAMP basalts, leading to a delay in the radiogenic continental weathering response. The subsequent rise in 87 Sr/ 86 Sr after the TJB is explained by intensified continental crustal weathering from elevated CO 2 levels and reduced mantle‐derived Sr flux. Using Sr flux modeling, we also find support for such multiphase, prolonged continental weathering scenarios. Aggregating the new data set with published records employing an astrochronological age model results in a highly resolved Sr isotope reference curve for an 8.5 Myr interval around the TJB.}, year = {2024}, eissn = {1525-2027}, orcid-numbers = {Katchinoff, Joachim/0000-0003-1286-8344; Planavsky, Noah/0000-0001-5849-8508; Pálfy, József/0000-0001-9686-1849} } @{MTMT:34450455, title = {AZ ALSÓ JURA PISZNICEI MÉSZKŐ FORMÁCIÓ INTEGRÁLT SZTRATIGRÁFIÁJA A TATAI KÁLVÁRIA-DOMBON}, url = {https://m2.mtmt.hu/api/publication/34450455}, author = {Dénes, D and Vallner, Zsolt and Demény, Attila and Kovács, Zs and Pálfy, József}, booktitle = {26. Magyar Őslénytani Vándorgyűlés}, unique-id = {34450455}, year = {2023}, pages = {12-13}, orcid-numbers = {Demény, Attila/0000-0003-0522-9018; Pálfy, József/0000-0001-9686-1849} } @article{MTMT:34233670, title = {Initial results of coring at Prees, Cheshire Basin, UK (ICDP JET project): towards an integrated stratigraphy, timescale, and Earth system understanding for the Early Jurassic}, url = {https://m2.mtmt.hu/api/publication/34233670}, author = {Hesselbo, Stephen P. and Al-Suwaidi, Aisha and Baker, Sarah J. and Ballabio, Giorgia and Belcher, Claire M. and Bond, Andrew and Boomer, Ian and Bos, Remco and Bjerrum, Christian J. and Bogus, Kara and Boyle, Richard and Browning, James V. and Butcher, Alan R. and Condon, Daniel J. and Copestake, Philip and Daines, Stuart and Dalby, Christopher and Damaschke, Magret and Damborenea, Susana E. and Deconinck, Jean-Francois and Dickson, Alexander J. and Fendley, Isabel M. and Fox, Calum P. and Fraguas, Angela and Frieling, Joost and Gibson, Thomas A. and He, Tianchen and Hickey, Kat and Hinnov, Linda A. and Hollaar, Teuntje P. and Huang, Chunju and Hudson, Alexander J. L. and Jenkyns, Hugh C. and Idiz, Erdem and Jiang, Mengjie and Krijgsman, Wout and Korte, Christoph and Leng, Melanie J. and Lenton, Timothy M. and Leu, Katharina and Little, Crispin T. S. and MacNiocaill, Conall and Manceñido, Miguel O. and Mather, Tamsin A. and Mattioli, Emanuela and Miller, Kenneth G. and Newton, Robert J. and Page, Kevin N. and Pálfy, József and Pieńkowski, Gregory and Porter, Richard J. and Poulton, Simon W. and Riccardi, Alberto C. and Riding, James B. and Roper, Ailsa and Ruhl, Micha and Silva, Ricardo L. and Storm, Marisa S. and Suan, Guillaume and Szűcs, Dominika and Thibault, Nicolas and Uchman, Alfred and Stanley, James N. and Ullmann, Clemens V. and van de Schootbrugge, Bas and Vickers, Madeleine L. and Wadas, Sonja and Whiteside, Jessica H. and Wignall, Paul B. and Wonik, Thomas and Xu, Weimu and Zeeden, Christian and Zhao, Ke}, doi = {10.5194/sd-32-1-2023}, journal-iso = {SCI DRIL}, journal = {SCIENTIFIC DRILLING}, volume = {32}, unique-id = {34233670}, issn = {1816-8957}, abstract = {Abstract. Drilling for the International Continental Scientific Drilling Program (ICDP) Early Jurassic Earth System and Timescale project (JET) was undertaken between October 2020 and January 2021. The drill site is situated in a small-scale synformal basin of the latest Triassic to Early Jurassic age that formed above the major Permian–Triassic half-graben system of the Cheshire Basin. The borehole is located to recover an expanded and complete succession to complement the legacy core from the Llanbedr (Mochras Farm) borehole drilled through 1967–1969 on the edge of the Cardigan Bay Basin, North Wales. The overall aim of the project is to construct an astronomically calibrated integrated timescale for the Early Jurassic and to provide insights into the operation of the Early Jurassic Earth system. Core of Quaternary age cover and Early Jurassic mudstone was obtained from two shallow partially cored geotechnical holes (Prees 2A to 32.2 m below surface (m b.s.) and Prees 2B to 37.0 m b.s.) together with Early Jurassic and Late Triassic mudstone from the principal hole, Prees 2C, which was cored from 32.92 to 651.32 m (corrected core depth scale). Core recovery was 99.7 % for Prees 2C. The ages of the recovered stratigraphy range from the Late Triassic (probably Rhaetian) to the Early Jurassic, Early Pliensbachian (Ibex Ammonoid Chronozone). All ammonoid chronozones have been identified for the drilled Early Jurassic strata. The full lithological succession comprises the Branscombe Mudstone and Blue Anchor formations of the Mercia Mudstone Group, the Westbury and Lilstock formations of the Penarth Group, and the Redcar Mudstone Formation of the Lias Group. A distinct interval of siltstone is recognized within the Late Sinemurian of the Redcar Mudstone Formation, and the name “Prees Siltstone Member” is proposed. Depositional environments range from playa lake in the Late Triassic to distal offshore marine in the Early Jurassic. Initial datasets compiled from the core include radiography, natural gamma ray, density, magnetic susceptibility, and X-ray fluorescence (XRF). A full suite of downhole logs was also run. Intervals of organic carbon enrichment occur in the Rhaetian (Late Triassic) Westbury Formation and in the earliest Hettangian and earliest Pliensbachian strata of the Redcar Mudstone Formation, where up to 4 % total organic carbon (TOC) is recorded. Other parts of the succession are generally organic-lean, containing less than 1 % TOC. Carbon-isotope values from bulk organic matter have also been determined, initially at a resolution of ∼ 1 m, and these provide the basis for detailed correlation between the Prees 2 succession and adjacent boreholes and Global Stratotype Section and Point (GSSP) outcrops. Multiple complementary studies are currently underway and preliminary results promise an astronomically calibrated biostratigraphy, magnetostratigraphy, and chemostratigraphy for the combined Prees and Mochras successions as well as insights into the dynamics of background processes and major palaeo-environmental changes.}, year = {2023}, eissn = {1816-3459}, pages = {1-25}, orcid-numbers = {Hesselbo, Stephen P./0000-0001-6178-5401; Al-Suwaidi, Aisha/0000-0002-4677-6651; Boomer, Ian/0000-0003-1276-2179; Bos, Remco/0000-0002-3664-3265; Condon, Daniel J./0000-0002-9082-3283; Frieling, Joost/0000-0002-5374-1625; Leng, Melanie J./0000-0003-1115-5166; Leu, Katharina/0000-0002-1707-9099; Mather, Tamsin A./0000-0003-4259-7303; Miller, Kenneth G./0000-0002-7583-7425; Pálfy, József/0000-0001-9686-1849; Roper, Ailsa/0000-0003-1687-9956; Thibault, Nicolas/0000-0003-4147-5531; Ullmann, Clemens V./0000-0002-5865-7289; Vickers, Madeleine L./0000-0002-4964-0418; Wadas, Sonja/0000-0001-8519-1536; Xu, Weimu/0000-0002-3239-0272; Zeeden, Christian/0000-0002-8617-0443} } @article{MTMT:34057402, title = {Chronostratigraphic overview of the Toarcian (Early Jurassic) ammonite fauna from the Mecsek Mountains (Hungary)}, url = {https://m2.mtmt.hu/api/publication/34057402}, author = {Kovács, Z and Horváth-Kostka, Zsófia Rita and Müller, Tamás and Pálfy, József}, doi = {10.31577/GeolCarp.2023.14}, journal-iso = {GEOL CARPATH}, journal = {GEOLOGICA CARPATHICA}, volume = {74}, unique-id = {34057402}, issn = {1335-0552}, keywords = {Toarcian; Chronostratigraphy; Mecsek Mountains; PALEOBIOGEOGRAPHY; Early Jurassic; Ammonitina}, year = {2023}, eissn = {1336-8052}, pages = {211-232}, orcid-numbers = {Kovács, Z/0000-0001-7276-7321; Pálfy, József/0000-0001-9686-1849} } @article{MTMT:33821788, title = {Uranium isotope evidence for extensive seafloor anoxia after the end-Triassic mass extinction}, url = {https://m2.mtmt.hu/api/publication/33821788}, author = {Somlyay, Anna and Palcsu, László and Kiss, Gabriella Ilona and Clarkson, Matthew O. and Kovács, Emma Blanka and Vallner, Zsolt and Zajzon, Norbert and Pálfy, József}, doi = {10.1016/j.epsl.2023.118190}, journal-iso = {EARTH PLANET SC LETT}, journal = {EARTH AND PLANETARY SCIENCE LETTERS}, volume = {614}, unique-id = {33821788}, issn = {0012-821X}, year = {2023}, eissn = {1385-013X}, orcid-numbers = {Somlyay, Anna/0000-0002-7567-5251; Kovács, Emma Blanka/0000-0003-0854-4347; Zajzon, Norbert/0000-0003-4664-8091; Pálfy, József/0000-0001-9686-1849} } @article{MTMT:33712669, title = {Preservation of orbital forcing in intraplatform carbonates and an astronomical time frame for a multiproxy record of end-Triassic global change from a western Tethyan section (Csővár, Hungary)}, url = {https://m2.mtmt.hu/api/publication/33712669}, author = {Vallner, Zsolt and Kovács, E.B. and Haas, János and Móricz, Ferenc and Ruhl, M. and Zajzon, Norbert and Pálfy, József}, doi = {10.1016/j.palaeo.2023.111493}, journal-iso = {PALAEOGEOGR PALAEOCL}, journal = {PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY}, volume = {617}, unique-id = {33712669}, issn = {0031-0182}, year = {2023}, eissn = {1872-616X}, orcid-numbers = {Haas, János/0000-0003-0929-8889; Pálfy, József/0000-0001-9686-1849} } @{MTMT:33961967, title = {Cyclostratigraphy and astrochronology of the lacustrine to paralic Mecsek Coal Formation (Southwest Hungary)}, url = {https://m2.mtmt.hu/api/publication/33961967}, author = {Vallner, Zsolt and Pálfy, József}, booktitle = {11th International Congress on the Jurassic System}, unique-id = {33961967}, year = {2022}, pages = {128}, orcid-numbers = {Pálfy, József/0000-0001-9686-1849} } @{MTMT:33112016, title = {INTEGRATED STRATIGRAPHY OF THE HETTANGIAN-SINEMURIAN (LOWER JURASSIC) IN THE TATA GEOLOGICAL GARDEN (TRANSDANUBIAN RANGE, HUNGARY)}, url = {https://m2.mtmt.hu/api/publication/33112016}, author = {Dénes, D and Vallner, Zsolt and Demény, Attila and Kovács, Zs and Pálfy, József}, booktitle = {11th International Congress on the Jurassic System}, unique-id = {33112016}, year = {2022}, pages = {35}, orcid-numbers = {Demény, Attila/0000-0003-0522-9018; Pálfy, József/0000-0001-9686-1849} } @{MTMT:33110863, title = {Extensive anoxia after the End-Triassic Mass Extinction: uranium isotope evidence from the Triassic-Jurassic boundary section at Csővár}, url = {https://m2.mtmt.hu/api/publication/33110863}, author = {Somlyay, Anna and Palcsu, László and Kiss, Gabriella Ilona and Matthew, O. Clarkson and Kovács, Emma Blanka and Vallner, Zsolt and Zajzon, Norbert and Pálfy, József}, booktitle = {11th International Congress on the Jurassic System}, unique-id = {33110863}, year = {2022}, pages = {111}, orcid-numbers = {Pálfy, József/0000-0001-9686-1849} } @{MTMT:33110788, title = {Multiproxy cyclostratigraphy and astrochronology of a Triassic-Jurassic boundary section from Csővár, Hungary}, url = {https://m2.mtmt.hu/api/publication/33110788}, author = {Vallner, Zsolt and Kovács, EB and Demény, Attila and Móricz, Ferenc and Zajzon, Norbert and Pálfy, József}, booktitle = {11th International Congress on the Jurassic System}, unique-id = {33110788}, year = {2022}, pages = {127}, orcid-numbers = {Demény, Attila/0000-0003-0522-9018; Pálfy, József/0000-0001-9686-1849} }