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Lucarelli JK, Carroll HM, Ulrich RN, Elliott BM, Coplen TB, Eagle RA, Tripati A. Equilibrated Gas and Carbonate Standard-Derived Dual (Δ47 and Δ48) Clumped Isotope Values. GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS : G(3) 2023; 24:e2022GC010458. [PMID: 37829604 PMCID: PMC10569407 DOI: 10.1029/2022gc010458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 08/22/2022] [Indexed: 10/14/2023]
Abstract
Carbonate clumped isotope geochemistry has primarily focused on mass spectrometric determination of m/z 47 CO2 for geothermometry, but theoretical calculations and recent experiments indicate paired analysis of the m/z 47 (13C18O16O) and m/z 48 (12C18O18O) isotopologues (referred to as Δ 47 and Δ 48 ) can be used to study non-equilibrium isotope fractionations and refine temperature estimates. We utilize 5,448 Δ 47 and 3,400 Δ 48 replicate measurements of carbonate samples and standards, and 183 Δ 47 and 195 Δ 48 replicate measurements of gas standards from 2015 to 2021 from a multi-year and multi-instrument data set to constrain Δ 47 and Δ 48 values for 27 samples and standards, including Devils Hole cave calcite, and study equilibrium Δ 47 -Δ 48 , Δ 47 -temperature, and Δ 48 -temperature relationships. We compare results to previously published findings and calculate equilibrium regressions based on data from multiple laboratories. We report acid digestion fractionation factors, Δ * 63 - 47 and Δ * 64 - 48 , and account for their dependence on the initial clumped isotope values of the mineral.
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Affiliation(s)
- Jamie K Lucarelli
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic Sciences, Center for Diverse Leadership in Science, Institute of the Environment and Sustainability, UCLA, Los Angeles, CA, USA
| | - Hannah M Carroll
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic Sciences, Center for Diverse Leadership in Science, Institute of the Environment and Sustainability, UCLA, Los Angeles, CA, USA
| | - Robert N Ulrich
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic Sciences, Center for Diverse Leadership in Science, Institute of the Environment and Sustainability, UCLA, Los Angeles, CA, USA
| | - Ben M Elliott
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic Sciences, Center for Diverse Leadership in Science, Institute of the Environment and Sustainability, UCLA, Los Angeles, CA, USA
| | | | - Robert A Eagle
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic Sciences, Center for Diverse Leadership in Science, Institute of the Environment and Sustainability, UCLA, Los Angeles, CA, USA
| | - Aradhna Tripati
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic Sciences, Center for Diverse Leadership in Science, Institute of the Environment and Sustainability, UCLA, Los Angeles, CA, USA
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Xiong Z, Liu X, Ding L, Farnsworth A, Spicer RA, Xu Q, Valdes P, He S, Zeng D, Wang C, Li Z, Guo X, Su T, Zhao C, Wang H, Yue Y. The rise and demise of the Paleogene Central Tibetan Valley. SCIENCE ADVANCES 2022; 8:eabj0944. [PMID: 35138908 PMCID: PMC8827648 DOI: 10.1126/sciadv.abj0944] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 12/17/2021] [Indexed: 06/14/2023]
Abstract
Reconstructing the Paleogene topography and climate of central Tibet informs understanding of collisional tectonic mechanisms and their links to climate and biodiversity. Radiometric dates of volcanic/sedimentary rocks and paleotemperatures based on clumped isotopes within ancient soil carbonate nodules from the Lunpola Basin, part of an east-west trending band of basins in central Tibet and now at 4.7 km, suggest that the basin rose from <2.0 km at 50 to 38 million years (Ma) to >4.0 km by 29 Ma. The height change is quantified using the rates at which wet-bulb temperatures (Tw) decline at land surfaces as those surface rise. In this case, Tw fell from ~8°C at ~38 Ma to ~1°C at 29 Ma, suggesting at least ~2.0 km of surface uplift in ~10 Ma under warm Eocene to Oligocene conditions. These results confirm that a Paleogene Central Tibetan Valley transformed to a plateau before the Neogene.
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Affiliation(s)
- Zhongyu Xiong
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Xiaohui Liu
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Lin Ding
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Alex Farnsworth
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
- School of Geographical Sciences, University of Bristol, Bristol BS8 1SS, UK
| | - Robert A. Spicer
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, China
- School of Environment, Earth and Ecosystem Sciences, The Open University, Milton Keynes MK7 6AA, UK
| | - Qiang Xu
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Paul Valdes
- School of Geographical Sciences, University of Bristol, Bristol BS8 1SS, UK
| | - Songlin He
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Deng Zeng
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Wang
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhenyu Li
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Xudong Guo
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tao Su
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, China
| | - Chenyuan Zhao
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Houqi Wang
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Yahui Yue
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
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Liu X, Deng W, Guo Y, Wei G. Improved Apparatus for Phosphoric Acid Digestion of Carbonates to Determine the Carbon, Oxygen and Clumped Isotope Compositions. ANAL LETT 2021. [DOI: 10.1080/00032719.2021.1904252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Xi Liu
- State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
| | - Wenfeng Deng
- State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
| | - Yangrui Guo
- State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
| | - Gangjian Wei
- State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
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Upadhyay D, Lucarelli J, Arnold A, Flores R, Bricker H, Ulrich RN, Jesmok G, Santi L, Defliese W, Eagle RA, Carroll HM, Bateman JB, Petryshyn V, Loyd SJ, Tang J, Priyadarshi A, Elliott B, Tripati A. Carbonate clumped isotope analysis (Δ 47 ) of 21 carbonate standards determined via gas-source isotope-ratio mass spectrometry on four instrumental configurations using carbonate-based standardization and multiyear data sets. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2021; 35:e9143. [PMID: 34131977 PMCID: PMC9284978 DOI: 10.1002/rcm.9143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 06/01/2021] [Accepted: 06/10/2021] [Indexed: 06/12/2023]
Abstract
RATIONALE Clumped isotope geochemistry examines the pairing or clumping of heavy isotopes in molecules and provides information about the thermodynamic and kinetic controls on their formation. The first clumped isotope measurements of carbonate minerals were first published 15 years ago, and since then, interlaboratory offsets have been observed, and laboratory and community practices for measurement, data analysis, and instrumentation have evolved. Here we briefly review historical and recent developments for measurements, share Tripati Lab practices for four different instrument configurations, test a recently published proposal for carbonate-based standardization on multiple instruments using multi-year data sets, and report values for 21 different carbonate standards that allow for recalculations of previously published data sets. METHODS We examine data from 4628 standard measurements on Thermo MAT 253 and Nu Perspective IS mass spectrometers, using a common acid bath (90°C) and small-sample (70°C) individual reaction vessels. Each configuration was investigated by treating some standards as anchors (working standards) and the remainder as unknowns (consistency standards). RESULTS We show that different acid digestion systems and mass spectrometer models yield indistinguishable results when instrument drift is well characterized. For linearity correction, mixed gas-and-carbonate standardization or carbonate-only standardization yields similar results. No difference is observed in the use of three or eight working standards for the construction of transfer functions. CONCLUSIONS We show that all configurations yield similar results if instrument drift is robustly characterized and validate a recent proposal for carbonate-based standardization using large multiyear data sets. Δ47 values are reported for 21 carbonate standards on both the absolute reference frame (ARF; also refered to as the Carbon Dioxide Equilibrated Scale or CDES) and the new InterCarb-Carbon Dioxide Equilibrium Scale (I-CDES) reference frame, facilitating intercomparison of data from a diversity of labs and instrument configurations and restandardization of a broad range of sample sets between 2006, when the first carbonate measurements were published, and the present.
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Affiliation(s)
- Deepshikha Upadhyay
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
| | - Jamie Lucarelli
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
| | - Alexandrea Arnold
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
| | - Randy Flores
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
| | - Hayley Bricker
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
| | - Robert N. Ulrich
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
| | - Gregory Jesmok
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
- Department of Geological SciencesCalifornia State UniversityNorthridgeCalifornia
| | - Lauren Santi
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
- GSI Environmental IncIrvineCalifornia
| | - William Defliese
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
- School of Earth and Environmental SciencesThe University of QueenslandSt LuciaQueenslandAustralia
| | - Robert A. Eagle
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
| | - Hannah M. Carroll
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
| | - Jesse Bloom Bateman
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
- Biological Sciences DepartmentState University of New YorkCortlandNew York
| | - Victoria Petryshyn
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
- Environmental Studies ProgramDepartment of Environmental Studies, University of Southern CaliforniaLos AngelesCalifornia
| | - Sean J. Loyd
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
- Geological Sciences DepartmentCalifornia State University FullertonFullertonCalifornia
| | - Jianwu Tang
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
| | - Antra Priyadarshi
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
| | - Ben Elliott
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
| | - Aradhna Tripati
- Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic SciencesInstitute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of CaliforniaLos AngelesCalifornia
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Massive formation of early diagenetic dolomite in the Ediacaran ocean: Constraints on the "dolomite problem". Proc Natl Acad Sci U S A 2020; 117:14005-14014. [PMID: 32513736 DOI: 10.1073/pnas.1916673117] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Paleozoic and Precambrian sedimentary successions frequently contain massive dolomicrite [CaMg(CO3)2] units despite kinetic inhibitions to nucleation and precipitation of dolomite at Earth surface temperatures (<60 °C). This paradoxical observation is known as the "dolomite problem." Accordingly, the genesis of these dolostones is usually attributed to burial-hydrothermal dolomitization of primary limestones (CaCO3) at temperatures of >100 °C, thus raising doubt about the validity of these deposits as archives of Earth surface environments. We present a high-resolution, >63-My-long clumped-isotope temperature (TΔ47) record of shallow-marine dolomicrites from two drillcores of the Ediacaran (635 to 541 Ma) Doushantuo Formation in South China. Our T∆47 record indicates that a majority (87%) of these dolostones formed at temperatures of <100 °C. When considering the regional thermal history, modeling of the influence of solid-state reordering on our TΔ47 record further suggests that most of the studied dolostones formed at temperatures of <60 °C, providing direct evidence of a low-temperature origin of these dolostones. Furthermore, calculated δ18O values of diagenetic fluids, rare earth element plus yttrium compositions, and petrographic observations of these dolostones are consistent with an early diagenetic origin in a rock-buffered environment. We thus propose that a precursor precipitate from seawater was subsequently dolomitized during early diagenesis in a near-surface setting to produce the large volume of dolostones in the Doushantuo Formation. Our findings suggest that the preponderance of dolomite in Paleozoic and Precambrian deposits likely reflects oceanic conditions specific to those eras and that dolostones can be faithful recorders of environmental conditions in the early oceans.
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