Search Results - "Demény, Attila"

Cave bacteria-induced amorphous calcium carbonate formation by Enyedi, Nóra Tünde, Makk, Judit, Kótai, László, Berényi, Bernadett, Klébert, Szilvia, Sebestyén, Zoltán, Molnár, Zsombor, Borsodi, Andrea K., Leél-Őssy, Szabolcs, Demény, Attila, Németh, Péter

“…Amorphous calcium carbonate (ACC) is a precursor of crystalline calcium carbonates that plays a key role in biomineralization and polymorph evolution. Here, we…”
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Laevaptychi as reliable paleotemperature archives: high-resolution stable isotope compositions of Kimmeridgian (Jurassic) lamellar structured aspidoceratid lower mandibles from Zengővárkony (Mecsek Mountains, Hungary) by Bujtor, László, Demény, Attila, Németh, Péter, Bajnóczi, Bernadett

“…Fieldwork provided well-preserved Laevaptychus sp. ex gr. hoplisus – obliquus specimens from the lower Kimmeridgian of Zengővárkony (Mecsek Mountains, south…”
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Mercury anomalies and carbon isotope excursions in the western Tethyan Csővár section support the link between CAMP volcanism and the end-Triassic extinction by Kovács, Emma Blanka, Ruhl, Micha, Demény, Attila, Fórizs, István, Hegyi, István, Horváth-Kostka, Zsófia Rita, Móricz, Ferenc, Vallner, Zsolt, Pálfy, József

“…The end-Triassic extinction is one of the major Phanerozoic mass extinctions and it appears to have been linked to coeval rapid and severe environmental…”
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End-Triassic crisis and “unreefing” led to the demise of the Dachstein carbonate platform: A revised model and evidence from the Transdanubian Range, Hungary by Pálfy, József, Kovács, Zsófia, Demény, Attila, Vallner, Zsolt

“…The Dachstein platform was an extensive carbonate platform developed on the westernmost shelf of the Neotethys during the Late Triassic, now preserved in…”
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Mineralogical and geochemical changes in conglomerate reservoir rocks induced by CO2 influx at Mihályi-Répcelak natural analogue, NW-Hungary by Forray, Viktória, Király, Csilla, Demény, Attila, Cseresznyés, Dóra, Szabó, Csaba, Falus, György

“…A temporary solution to massive anthropogenic CO 2 emissions can be the capture of industrial CO 2 from flue gas and sequestering it in geological formations…”
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Tourmaline composition probes serpentinite-derived fluid mobility in subduction zones by Xiong, Jia-Wei, Chen, Yi-Xiang, Demény, Attila, Zheng, Yong-Fei, De Hoog, Jan C.M., Sun, Guo-Chao

“…Serpentinite dehydration in subduction zones plays a pivotal role in geochemical cycling on Earth. A number of geochemical studies on arc magmas have…”
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Combined use of conventional and clumped carbonate stable isotopes to identify hydrothermal isotopic alteration in cave walls by Temovski, Marjan, Rinyu, László, Futó, István, Molnár, Kata, Túri, Marianna, Demény, Attila, Otoničar, Bojan, Dublyansky, Yuri, Audra, Philippe, Polyak, Victor, Asmerom, Yemane, Palcsu, László

“…Alteration of conventional carbonate stable isotopes (δ 18 O, δ 13 C) in cave walls has been shown to be a useful tool to identify cave formation driven by…”
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The Esquinzo Ultra-Alkaline Rock Suite of Fuerteventura Basal Complex (Canary Islands): Evidence for Origin of Carbonatites by Fractional Crystallization by Ramón Casillas, Agustina Ahijado, Géza Nagy, Attila Demény, Carlos Fernández

“…The origin of the carbonatites that appear on Earth is one of the most controversial current topics in the petrogenesis of igneous rocks. Situated in the…”
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Formation of amorphous calcium carbonate in caves and its implications for speleothem research by Demény, Attila, Németh, Péter, Czuppon, György, Leél-Őssy, Szabolcs, Szabó, Máté, Judik, Katalin, Németh, Tibor, Stieber, József

“…Speleothem deposits are among the most valuable continental formations in paleoclimate research, as they can be dated using absolute dating methods, and they…”
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The impact of social status and biological sex on diet at 10th century CE Hungarian sites from stable carbon and nitrogen isotope analyses by Gugora, Ariana, Demény, Attila, Gábor Hatvani, István, Fóthi, Erzsébet

“…•This is the first comprehensive stable isotopic research on Hungarian populations performed from start to finish in Hungary.•At Karos-Eperjesszög, there were…”
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Bacterial and abiogenic carbonates formed in caves-no vital effect on clumped isotope compositions by Demény, Attila, Rinyu, László, Németh, Péter, Czuppon, György, Enyedi, Nóra, Makk, Judit, Leél-Őssy, Szabolcs, Kesjár, Dóra, Kovács, Ivett

“…Speleothems (dominated by cave-hosted carbonate deposits) are valuable archives of paleoclimate conditions. As such, they are potential targets of clumped…”
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Radiolarian response to environmental changes at the Sinemurian–Pliensbachian transition in the Northern Calcareous Alps, Austria by Cifer, Tim, Goričan, Špela, Demény, Attila, Gawlick, Hans‐Jürgen

“…Major environmental, climate and sealevel changes occurred in the Western Tethyan Realm during the late Sinemurian to early Pliensbachian time interval. Here,…”
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Speleothem Records from the Eastern Part of Europe and Turkey—Discussion on Stable Oxygen and Carbon Isotopes by Kern, Zoltán, Demény, Attila, Perşoiu, Aurel, Hatvani, István Gábor

“…The region comprising of East Central Europe, South East Europe and Turkey contributed to the SISAL (Speleothem Isotopes Synthesis and AnaLysis) global…”
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Dolomitization of shallow-water, mixed silicilastic-carbonate sequences: The Lower Triassic ramp succession of the Transdanubian Range, Hungary by Győri, Orsolya, Haas, János, Hips, Kinga, Lukoczki, Georgina, Budai, Tamás, Demény, Attila, Szőcs, Emese

“…The Lower Triassic succession of the Transdanubian Range in Hungary comprises limestones, dolomite, marl, sandstones and siltstones, deposited in tidal flat,…”
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Empirical equations for the temperature dependence of calcite-water oxygen isotope fractionation from 10 to 70°C by Demény, Attila, Kele, Sándor, Siklósy, Zoltán

“…Although the temperature dependence of calcite‐water oxygen isotope fractionation seems to have been well established by numerous empirical, experimental and…”
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Recrystallization-induced oxygen isotope changes in inclusion-hosted water of speleothems – Paleoclimatological implications by Demény, Attila, Czuppon, György, Kern, Zoltán, Leél-Őssy, Szabolcs, Németh, Alexandra, Szabó, Máté, Tóth, Mária, Wu, Chung-Che, Shen, Chuan-Chou, Molnár, Mihály, Németh, Tibor, Németh, Péter, Óvári, Mihály

“…The issue of diagenetic alteration of carbonate deposits in caves (speleothems) has gained increasing importance in recent years, as this process has serious…”
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Detection of diagenetic alteration in bones and teeth for migration and dietary studies — a combined FTIR and C-N–O-Sr isotope study on tenth century CE cemeteries in northern and northeastern Hungary by Gugora, Ariana, Demény, Attila, Fóthi, Erzsébet, Horváth, Anikó, Palcsu, László, Karlik, Máté

“…Stable isotope-based dietary information on the tenth century CE Hungarian population serves as a valuable comparative tool to other dietary stable isotope…”
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Cave monitoring in the Béke and Baradla caves (Northeastern Hungary): implications for the conditions for the formation cave carbonates by Czuppon, György, Demény, Attila, Leél-Őssy, Szabolcs, Óvari, Mihály, Molnár, Mihály, Stieber, József, Kiss, Klaudia, Kármán, Krisztina, Surányi, Gergely, Haszpra, László

“…In order to use speleothems in the reconstruction of past climate and environmental changes it is necessary to understand the environmental and hydrological…”
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Pliocene–Early Pleistocene climatic trends in the Italian Peninsula based on stable oxygen and carbon isotope compositions of rhinoceros and gomphothere tooth enamel by Szabó, Péter, Kocsis, László, Vennemann, Torsten, Pandolfi, Luca, Kovács, János, Martinetto, Edoardo, Demény, Attila

“…The Pliocene and Early Pleistocene (5.2–1 Ma) palaeoclimate for localities in Italy is evaluated using stable carbon and oxygen isotope compositions of tooth…”
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Processes and controlling factors of polygenetic dolomite formation in the Transdanubian Range, Hungary: a synopsis by Haas, János, Hips, Kinga, Budai, Tamás, Győri, Orsolya, Lukoczki, Georgina, Kele, Sándor, Demény, Attila, Poros, Zsófia

“…In the Transdanubian Range (Hungary), dolostone and dolomitic limestone appear in a number of sedimentary successions formed from the Late Permian to the Late…”
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