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Zhang J. Oxygen Isotope Fractionation between Carbonate Minerals and Carbonic Acid Systems and Constraints for Environmental Science and Geological Processes. Molecules 2024; 29:698. [PMID: 38338441 PMCID: PMC10856116 DOI: 10.3390/molecules29030698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/25/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024] Open
Abstract
The equilibrium oxygen isotope fractionation factor is widely used in geological thermometry. However, under most natural conditions, the oxygen isotope exchange is rare to reach equilibrium. Especially for the complex water-rock interaction process, the contribution of the H2CO3 solution, CO32- solution, Ca(HCO3)2 solution, and CaCO3 solution to the equilibrium oxygen isotope fractionation factor of this process is poorly understood. In view of this predicament, these key parameters are obtained by ab initio calculations. The results showed that the contributions of different carbonate minerals and different aqueous solutions to the equilibrium oxygen isotope fractionation factor were different. Among all nine carbonate minerals (dolomite, calcite, aragonite, magnesite, siderite, otavite, smithsonite, ankerite, and strontianite), the minerals with the highest and lowest reduced partition function ratios (RPFR) were siderite and strontianite, respectively. At the same time, the RPFR of nitratine, which has the same structure as carbonate, was studied. The RPFRs of the three most widely distributed carbonates in nature (dolomite, calcite, and aragonite) were dolomite > calcite > aragonite. Among the H2CO3 solution, CO32- solution, Ca(HCO3)2 solution, and CaCO3 solution, the H2CO3 solution had the strongest ability to enrich 18O. In addition, the equilibrium oxygen isotope fractionation factors between aqueous solutions and gas phase species (CO2(g), H2O(g), and O2(g), etc.) were calculated systematically. The results showed that the oxygen isotope fractionation factors between solutions and gas phases were often inconsistent with the temperature change direction and that the kinetic effects played a key role. These theoretical parameters obtained in this study will provide key equilibrium oxygen isotope constraints for water-rock interaction processes.
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Affiliation(s)
- Jixi Zhang
- School of Geography and Environmental Science, Guizhou Normal University/State Engineering Technology Institute for Karst Desertification, Guiyang 550001, China;
- School of Karst Science, Guizhou Normal University/State Engineering Technology Institute for Karst Desertification, Guiyang 550001, China
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2
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Koltai G, Kluge T, Krüger Y, Spötl C, Rinyu L, Audra P, Honiat C, Leél-Őssy S, Dublyansky Y. Geothermometry of calcite spar at 10-50 °C. Sci Rep 2024; 14:1553. [PMID: 38238412 PMCID: PMC10796908 DOI: 10.1038/s41598-024-51937-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 01/11/2024] [Indexed: 01/22/2024] Open
Abstract
Carbonate geothermometry is a fundamental tool for quantitative assessment of the geothermal and geochemical evolution of diagenetic and hydrothermal systems, but it remains difficult to obtain accurate and precise formation temperatures of low-temperature calcite samples (below ~ 40 to 60 °C). Here, we apply three geothermometry methods (∆47-thermometry, nucleation-assisted fluid inclusion microthermometry-hereafter NA-FIM-and oxygen isotope thermometry) to slow-growing subaqueous calcite spar samples to cross-validate these methods down to 10 °C. Temperatures derived by NA-FIM and Δ47-thermometry agree within the 95% confidence interval, except for one sample. Regression analyses suggest that the real uncertainty of ∆47-thermometry exceeds the 1 SE analytical uncertainty and is around ± 6.6 °C for calcite spar that formed at 10-50 °C. The application of δ18O thermometry was limited to a few samples that contained sufficient primary fluid inclusions. It yielded broadly consistent results for two samples with two other geothermometers, and showed higher temperature for the third spar. We also found that calcite with steep rhombohedral morphologies is characteristic of low temperatures (11-13 °C), whereas blunt rhombohedra prevail in the 10-29 °C domain, and the scalenohedral habit dominates > 30 °C. This suggests that the calcite crystal morphology can be used to qualitatively distinguish between low- and higher-temperature calcite.
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Affiliation(s)
- Gabriella Koltai
- Institute of Geology, University of Innsbruck, Innrain 52, 6020, Innsbruck, Austria.
| | - Tobias Kluge
- Institute of Environmental Physics, Heidelberg University, Im Neuenheimer Feld 229, 69120, Heidelberg, Germany
- Chair of Geochemistry and Economic Geology, Karlsruhe Institute of Technology, Adenauerring 20B, 76131, Karlsruhe, Germany
| | - Yves Krüger
- Department of Earth Science, University of Bergen, Allégaten 41, 5007, Bergen, Norway
| | - Christoph Spötl
- Institute of Geology, University of Innsbruck, Innrain 52, 6020, Innsbruck, Austria
| | - László Rinyu
- Isotope Climatology and Environmental Research Centre (ICER), HUN_REN Institute for Nuclear Research (Atomki), Bem tér 18/C, 4026, Debrecen, Hungary
| | - Philippe Audra
- Polytech'Lab-UPR 7498, University of Côte d'Azur, 930 Route des Colles, Sophia-Antipolis, 06903, Nice, France
| | - Charlotte Honiat
- Institute of Geology, University of Innsbruck, Innrain 52, 6020, Innsbruck, Austria
| | - Szabolcs Leél-Őssy
- Department of Physical and Applied Geology, Eötvös Loránd University, Egyetem tér 1-3, 1053, Budapest, Hungary
| | - Yuri Dublyansky
- Institute of Geology, University of Innsbruck, Innrain 52, 6020, Innsbruck, Austria
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Quraish SN, Cockell C, Wuchter C, Kring D, Grice K, Coolen MJL. Deep subsurface microbial life in impact-altered Late Paleozoic granitoid rocks from the Chicxulub impact crater. GEOBIOLOGY 2024; 22:e12583. [PMID: 38385599 DOI: 10.1111/gbi.12583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 11/30/2023] [Accepted: 12/06/2023] [Indexed: 02/23/2024]
Abstract
In 2016, IODP-ICDP Expedition 364 recovered an 829-meter-long core within the peak ring of the Chicxulub impact crater (Yucatán, Mexico), allowing us to investigate the post-impact recovery of the heat-sterilized deep continental microbial biosphere at the impact site. We recently reported increased cell biomass in the impact suevite, which was deposited within the first few hours of the Cenozoic, and that the overall microbial communities differed significantly between the suevite and the other main core lithologies (i.e., the granitic basement and the overlying Early Eocene marine sediments; Cockell et al., 2021). However, only seven rock intervals were previously analyzed from the geologically heterogenic and impact-deformed 587-m-long granitic core section below the suevite interval. Here, we used 16S rRNA gene profiling to study the microbial community composition in 45 intervals including (a) 31 impact-shocked granites, (b) 7 non-granitic rocks (i.e., consisting of suevite and impact melt rocks intercalated into the granites during crater formation and strongly serpentinized pre-impact sub-volcanic, ultramafic basanite/dolerite), and (c) 7 cross-cut mineral veins of anhydride and silica. Most recovered microbial taxa resemble those found in hydrothermal systems. Spearman correlation analysis confirmed that the borehole temperature, which gradually increased from 47 to 69°C with core depth, significantly shaped a subset of the vertically stratified modern microbial community composition in the granitic basement rocks. However, bacterial communities differed significantly between the impoverished shattered granites and nutrient-enriched non-granite rocks, even though both lithologies were at similar depths and temperatures. Furthermore, Spearman analysis revealed a strong correlation between the microbial communities and bioavailable chemical compounds and suggests the presence of chemolithoautotrophs, which most likely still play an active role in metal and sulfur cycling. These results indicate that post-impact microbial niche separation has also occurred in the granitic basement lithologies, as previously shown for the newly formed lithologies. Moreover, our data suggest that the impact-induced geochemical boundaries continue to shape the modern-day deep biosphere in the granitic basement underlying the Chicxulub crater.
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Affiliation(s)
- Sohaib Naseer Quraish
- The Institute for Geoscience Research, WA-Organic and Isotope Geochemistry Centre (WA-OIGC), School of Earth and Planetary Sciences, Curtin University, Bentley, Western Australia, Australia
| | - Charles Cockell
- UK Centre for Astrobiology, School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK
| | - Cornelia Wuchter
- The Institute for Geoscience Research, WA-Organic and Isotope Geochemistry Centre (WA-OIGC), School of Earth and Planetary Sciences, Curtin University, Bentley, Western Australia, Australia
| | - David Kring
- Lunar and Planetary Institute, Houston, Texas, USA
| | - Kliti Grice
- The Institute for Geoscience Research, WA-Organic and Isotope Geochemistry Centre (WA-OIGC), School of Earth and Planetary Sciences, Curtin University, Bentley, Western Australia, Australia
| | - Marco J L Coolen
- The Institute for Geoscience Research, WA-Organic and Isotope Geochemistry Centre (WA-OIGC), School of Earth and Planetary Sciences, Curtin University, Bentley, Western Australia, Australia
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Fórizs I, Kern Z, Csicsák J, Csurgó G, Földing G, Máthé Z, Ország J, Szreda G, Vendégh R. Monthly data of stable isotopic composition (δ 18O, δ 2H) and tritium activity in precipitation from 2004 to 2017 in the Mecsek Hills, Hungary. Data Brief 2020; 32:106206. [PMID: 32984454 PMCID: PMC7494684 DOI: 10.1016/j.dib.2020.106206] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 08/14/2020] [Accepted: 08/18/2020] [Indexed: 11/18/2022] Open
Abstract
The stable isotopic composition (δ18O, δ²H) and tritium activity of monthly aggregated precipitation samples were collected between April 2004 and December 2017 at six sites representing the first published precipitation isotope dataset from the Mecsek Hills (Hungary). The dataset includes 697 stable isotopic and 653 tritium activity concentration data of monthly precipitation samples collected across the Mecsek Hills. At the beginning of the monitoring period, the isotopic composition values suggest an insufficient protection against evaporation and this issue has occasionally reappeared later only in limited periods. These data are presented in brackets in the Supplementary Table and should be disregarded from further analysis until additional verification. This dataset provides isotope hydrological benchmark in comparison with other local and regional datasets of stable isotopes and tritium activities in surface water and groundwater not only in the Mecsek Hills but also in the surroundings. It can support water resource management, and paleoclimatological research. Isotope hydrological evaluation and further discussion on the seasonal trends in the precipitation isotopic characteristics are in progress and the tritium data were used in the derivation of a gridded database (1 × 1 km) of amount-weighted annual mean precipitation tritium activity for the Adriatic-Pannonian Region (AP3H_v1, [1]).
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Affiliation(s)
- István Fórizs
- Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences
- Corresponding author.
| | - Zoltán Kern
- Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences
- Corresponding author.
| | - József Csicsák
- MECSEKÉRC Zrt. Esztergár Lajos u. 19. H-7633 Pécs, Hungary
| | - Gergely Csurgó
- MECSEKÉRC Zrt. Esztergár Lajos u. 19. H-7633 Pécs, Hungary
| | - Gábor Földing
- MECSEKÉRC Zrt. Esztergár Lajos u. 19. H-7633 Pécs, Hungary
| | - Zoltán Máthé
- MECSEKÉRC Zrt. Esztergár Lajos u. 19. H-7633 Pécs, Hungary
| | - János Ország
- Public Limited Company for Radioactive Waste Management (PURAM), H-7031 Pf. 12. Paks, Hungary
| | - Géza Szreda
- MECSEKÉRC Zrt. Esztergár Lajos u. 19. H-7633 Pécs, Hungary
| | - Roland Vendégh
- MECSEKÉRC Zrt. Esztergár Lajos u. 19. H-7633 Pécs, Hungary
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Sinha A, Kathayat G, Weiss H, Li H, Cheng H, Reuter J, Schneider AW, Berkelhammer M, Adalı SF, Stott LD, Edwards RL. Role of climate in the rise and fall of the Neo-Assyrian Empire. SCIENCE ADVANCES 2019; 5:eaax6656. [PMID: 31763452 PMCID: PMC6853769 DOI: 10.1126/sciadv.aax6656] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 09/17/2019] [Indexed: 06/02/2023]
Abstract
Northern Iraq was the political and economic center of the Neo-Assyrian Empire (c. 912 to 609 BCE)-the largest and most powerful empire of its time. After more than two centuries of regional dominance, the Neo-Assyrian state plummeted from its zenith (c. 670 BCE) to complete political collapse (c. 615 to 609 BCE). Earlier explanations for the Assyrian collapse focused on the roles of internal politico-economic conflicts, territorial overextension, and military defeat. Here, we present a high-resolution and precisely dated speleothem record of climate change from the Kuna Ba cave in northern Iraq, which suggests that the empire's rise occurred during a two-centuries-long interval of anomalously wet climate in the context of the past 4000 years, while megadroughts during the early-mid seventh century BCE, as severe as recent droughts in the region but lasting for decades, triggered a decline in Assyria's agrarian productivity and thus contributed to its eventual political and economic collapse.
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Affiliation(s)
- Ashish Sinha
- Department of Earth Science, California State University, Dominguez Hills, Carson, CA, USA
| | - Gayatri Kathayat
- Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, China
| | - Harvey Weiss
- School of Forestry and Environmental Studies, Yale University, New Haven, CT, USA
- Department of Near Eastern Languages and Civilizations, Yale University, New Haven, CT, USA
| | - Hanying Li
- Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, China
| | - Hai Cheng
- Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, China
- Department of Earth Sciences, University of Minnesota, Minneapolis, MN, USA
| | | | - Adam W. Schneider
- Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USA
| | - Max Berkelhammer
- Department of Earth and Environmental Sciences, University of Illinois, Chicago, IL, USA
| | - Selim F. Adalı
- Department of History, Social Sciences University of Ankara, Ankara, Turkey
| | - Lowell D. Stott
- Department of Earth Sciences, University of Southern California, Los Angeles, CA, USA
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The Relationship between Atmospheric Carbon Dioxide Concentration and Global Temperature for the Last 425 Million Years. CLIMATE 2017. [DOI: 10.3390/cli5040076] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Demény A, Németh P, Czuppon G, Leél-Őssy S, Szabó M, Judik K, Németh T, Stieber J. Formation of amorphous calcium carbonate in caves and its implications for speleothem research. Sci Rep 2016; 6:39602. [PMID: 28004767 PMCID: PMC5177889 DOI: 10.1038/srep39602] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 11/24/2016] [Indexed: 11/13/2022] Open
Abstract
Speleothem deposits are among the most valuable continental formations in paleoclimate research, as they can be dated using absolute dating methods, and they also provide valuable climate proxies. However, alteration processes such as post-depositional mineralogical transformations can significantly influence the paleoclimatic application of their geochemical data. An innovative sampling and measurement protocol combined with scanning and transmission electron microscopy, X-ray diffraction and Fourier transform infrared spectroscopy is presented, demonstrating that carbonate precipitating from drip water in caves at ~10 °C contains amorphous calcium carbonate (ACC) that later transforms to nanocrystalline calcite. Stable oxygen isotope fractionations among calcite, ACC and water were also determined, proving that ACC is 18O-depleted (by >2.4 ± 0.8‰) relative to calcite. This, in turn, has serious consequences for speleothem-based fluid inclusion research as closed system transformation of ACC to calcite may induce a negative oxygen isotope shift in fluid inclusion water, resulting in deterioration of the original compositions. ACC formation increases the speleothems' sensitivity to alteration as its interaction with external solutions may result in the partial loss of original proxy signals. Mineralogical analysis of freshly precipitating carbonate at the studied speleothem site is suggested in order to determine the potential influence of ACC formation.
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Affiliation(s)
- Attila Demény
- Institute for Geological and Geochemical Research, RCAES, Hungarian Academy of Sciences, Budaörsi út 45, Budapest, H-1112, Hungary
| | - Péter Németh
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2., Budapest, H- 1117, Hungary
| | - György Czuppon
- Institute for Geological and Geochemical Research, RCAES, Hungarian Academy of Sciences, Budaörsi út 45, Budapest, H-1112, Hungary
| | - Szabolcs Leél-Őssy
- Department of Physical and Applied Geology, Eötvös Loránd University, Pázmány Péter sétány. 1/C, Budapest, H-1117, Hungary
| | - Máté Szabó
- Institute for Geological and Geochemical Research, RCAES, Hungarian Academy of Sciences, Budaörsi út 45, Budapest, H-1112, Hungary
| | - Katalin Judik
- Institute for Geological and Geochemical Research, RCAES, Hungarian Academy of Sciences, Budaörsi út 45, Budapest, H-1112, Hungary
| | - Tibor Németh
- Institute for Geological and Geochemical Research, RCAES, Hungarian Academy of Sciences, Budaörsi út 45, Budapest, H-1112, Hungary
| | - József Stieber
- Stieber Environmental Ltd., Nyerges u. 6., Budapest, H-1181, Hungary
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