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Clumped Isotope Thermometry in burial diagenetic systems - part 2: new constraints on the kinetics of 13C-18O bond reordering from contact metamorphic aureoles of magmatic intrusions

English title Clumped Isotope Thermometry in burial diagenetic systems - part 2: new constraints on the kinetics of 13C-18O bond reordering from contact metamorphic aureoles of magmatic intrusions
Applicant Bernasconi Stefano
Number 160046
Funding scheme Project funding
Research institution Geologisches Institut ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Geochemistry
Start/End 01.04.2015 - 31.12.2017
Approved amount 250'773.00
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All Disciplines (3)

Discipline
Geochemistry
Geology
Other disciplines of Earth Sciences

Keywords (7)

Dolomite; Stable Isotopes; Sedimentary basins; Calcite; Contact Metamorphism; Burial Diagenesis; Clumped isotopes

Lay Summary (German)

Lead
Die Geochemie der „clumped isotopes“ in Karbonaten befasst sich mit der Bestimmung der Häufigkeit der CO2-Moleküle, die aus den Isotopen 13C und je einem 16O und 18O bestehen. Ihre Häufigkeit ist temperaturabhängig und ermöglicht damit die Bestimmung der Bildungstemperatur von Karbonatmineralien. Anders als bei der herkömmlichen Temperaturbestimmungsmethode mittels d18O, ist der Einfluss der Isotopenzusammensetzung des Umgebungsfluides auf die „clumped isotopes“ vernachlässigbar.
Lay summary

Ziel und Inhalt

Es gibt nur wenige Studien über die Temperaturabhängigkheit von „clumped isotopes“ in Dolomit bei Temperaturen unter 50°C, und noch keine für höhere Temperaturen.  Diese Studie wird experimentelle Daten generieren für eine solide Kalibration des “clumped isotopes“ Thermometers anhand Proben mit kontrollierten Ausfällungstemperaturen von 90°C bis 220°C.

Das zweite Ziel dieser Studie ist die Untersuchung des Verhaltens dieses Thermometers, bei  erhöhten Temperaturen in der Erdkruste. Dafür werden wir thermische kontaktmetamorphe Gesteine um den Granitische Intrusionen des Monte Capanne und Campiglia Marittima in Toskana und von Monte Monzoni in den Dolomiten untersuchen.

Durch die Änderung der „clumped isotopes“ Signatur in Kalzitischen und Dolomitischen Gesteinen mit zunehmende Temperatur, werden wir die Kinetik der Recrystallisierung sowie die Schliesstemperatur dieses Thermometers bestimmen.

Wissenschaftlicher Kontext

Die experimentelle Kalibration der „clumped isotopes“ Fraktionierung in Dolomiten, soll helfen noch offene Fragen zur Bildung von Dolomit zu beantworten. Mit den Feldstudien werden die Grenzen der Anwendbarkeit dieses Thermometers bei höheren Temperaturen bestimmt und wichtige Daten zur Rekonstruktion der thermischen Geschichte von kontaktmetamorphen Aureolen geliefert.

 

Direct link to Lay Summary Last update: 02.04.2015

Responsible applicant and co-applicants

Employees

Name Institute

Publications

Publication
Calibration of the oxygen and clumped isotope thermometers for (proto-)dolomite based on synthetic and natural carbonates
Müller Inigo A., Rodriguez-Blanco Juan D., Storck Julian-Christopher, do Nascimento Gabriela Santilli, Bontognali Tomaso R.R., Vasconcelos Crisogono, Benning Liane G., Bernasconi Stefano M. (2019), Calibration of the oxygen and clumped isotope thermometers for (proto-)dolomite based on synthetic and natural carbonates, in Chemical Geology, 525, 1-17.
Reducing Uncertainties in Carbonate Clumped Isotope Analysis Through Consistent Carbonate-Based Standardization
Bernasconi Stefano M., Müller Inigo A., Bergmann Kristin D., Breitenbach Sebastian F. M., Fernandez Alvaro, Hodell David A., Jaggi Madalina, Meckler Anna Nele, Millan Isabel, Ziegler Martin (2018), Reducing Uncertainties in Carbonate Clumped Isotope Analysis Through Consistent Carbonate-Based Standardization, in Geochemistry, Geophysics, Geosystems, 19(9), 2895-2914.
Coupled Mg/Ca and clumped isotope analyses of foraminifera provide consistent water temperatures
Breitenbach Sebastian F.M., Mleneck-Vautravers Maryline J., Grauel Anna-Lena, Lo Li, Bernasconi Stefano M., Müller Inigo A., Rolfe James, Gázquez Fernando, Greaves Mervyn, Hodell David A. (2018), Coupled Mg/Ca and clumped isotope analyses of foraminifera provide consistent water temperatures, in Geochimica et Cosmochimica Acta, 236, 283-296.
Oxygen isotope fractionation in the siderite-water system between 8.5 and 62 °C.
van Dijk joep, Fernandez Alvaro, Müller Inigo A., Lever Marc, Bernasconi Stefano M. (2018), Oxygen isotope fractionation in the siderite-water system between 8.5 and 62 °C., in Geochimica et Cosmochimica Acta, 220, 535-551.
Penultimate deglacial warming across the Mediterranean Sea revealed by clumped isotopes in foraminifera
Rodriguez-Sanz Laura, Bernasconi Stefano, Marino Gianluca, Heslop D., Müller Inigo a., Fernandez Alvaro, Grant K.M., Rohling Eelco J. (2017), Penultimate deglacial warming across the Mediterranean Sea revealed by clumped isotopes in foraminifera, in Scientific reports, 7(16572), 1-11.
Carbonate clumped isotope analyses with the long-integration dual-inlet (LIDI) workflow: scratching at the lower sample weight boundaries
Mueller Inigo A., Fernandez Alvaro, Radke Jens, van Dijk Joep, Bowen Devon, Schwieters Johannes, Bernasconi Stefano M. (2017), Carbonate clumped isotope analyses with the long-integration dual-inlet (LIDI) workflow: scratching at the lower sample weight boundaries, in RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 31(12), 1057-1066.
Clumped isotope fractionation during phosphoric acid digestion of carbonates at 70 degrees C
Muller Inigo A., Violay Marie E. S., Storck Julian-Christopher, Fernandez Alvaro, van Dijk Joep, Madonna Claudio, Bernasconi Stefano M. (2017), Clumped isotope fractionation during phosphoric acid digestion of carbonates at 70 degrees C, in CHEMICAL GEOLOGY, 449, 1-14.
A Reassessment of the Precision of Carbonate Clumped Isotope Measurements: Implications for Calibrations and Paleoclimate Reconstructions
Fernandez Alvaro, Müller Inigo A., Rodríguez-Sanz Laura, van Dijk Joep, Looser Nathan, Bernasconi Stefano M. (2017), A Reassessment of the Precision of Carbonate Clumped Isotope Measurements: Implications for Calibrations and Paleoclimate Reconstructions, in Geochemistry, Geophysics, Geosystems, 1-12.
Constraining temperatures of formation and composition of dolomitizing fluids in the upper devonian nisku formation (Alberta, Canada) with clumped isotopes
Millan M.I., Machel H.G., Bernasconi S.M. (2016), Constraining temperatures of formation and composition of dolomitizing fluids in the upper devonian nisku formation (Alberta, Canada) with clumped isotopes, in Journal of Sedimentary Research, 86(2), 107-112.
Siderite acid fractionation factors for sealed and open vessel digestions at 70 °C and 100 °C
Fernandez A., van Dijk J., Müller I.A., Bernasconi S.M. (2016), Siderite acid fractionation factors for sealed and open vessel digestions at 70 °C and 100 °C, in Chemical Geology, 444, 180-186.

Collaboration

Group / person Country
Types of collaboration
Dr. Magali Bonifacie, IPG Paris France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Prof. Liane Benning/University of Leeds Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Dr. Andrea Dini, CNR Pisa Italy (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
27th Goldschmidt Conference Poster A high-temperature digestion apparatus for high-resolution clumped isotope analyses of siderite, magnesite and carbonate-bearing hydroxyapatite 13.08.2017 Paris, France Bernasconi Stefano; Müller Inigo;
6th international clumped isotope workshop Poster Can analytical errors explain our calibration problem? 09.08.2017 Paris, France Bernasconi Stefano; Müller Inigo;
6th clumped isotope workshop Poster Carbonate clumped isotope analyses with the long-integration dual-inlet (LIDI) method implemented in a Kiel IV – 253Plus setup 09.08.2017 PAris, France Müller Inigo; Bernasconi Stefano;
6th clumped isotope workshop Talk given at a conference Recent analytical and data-processing improvements for the precise analysis of small carbonate samples 09.08.2017 Paris, France Bernasconi Stefano; Müller Inigo;
6th clumped isotope workshop Poster A reduced continental temperature gradient in North America during the Early Eocene 09.08.2017 Paris, France Bernasconi Stefano; Müller Inigo;
6th clumped isotope workshop Poster A statistical approach for paleoclimate reconstructions using clumped isotopes in foraminifera 09.08.2017 Paris, France Müller Inigo; Bernasconi Stefano;
Dolomieu Conference Poster Pervasive dolomitization at the Latemar carbonate platform: a reinvestigation with clumped isotopes 04.10.2016 Ortisei, Italy Brack Peter; Müller Inigo; Bernasconi Stefano;


Self-organised

Title Date Place
Isotopes 2107 09.07.2017 Monte Verità, Ascona, ticino, Switzerland

Associated projects

Number Title Start Funding scheme
134987 Multidisciplinary study Of Continental/ocean Climate dynamics using High-resolution records from the eastern mediterraneAn (MOCCHA): Part 2 01.04.2011 Project funding
169849 Improving the reconstruction of deep-time paleoclimate and diagenetic history of sedimentary basins with carbonate clumped isotopes. 01.01.2017 Project funding
154501 4th International Workshop on Clumped Isotopes 01.08.2014 Scientific Conferences
143485 Application of Clumped Isotope Thermometry to burial diagenetic and low temperature hydrothermal systems. 01.02.2013 Project funding
143485 Application of Clumped Isotope Thermometry to burial diagenetic and low temperature hydrothermal systems. 01.02.2013 Project funding
115934 Multidisciplinary study of continental/ocean climate dynamics using high-resolution records from the eastern mediterranean (MOCCHA) 01.04.2008 Project funding (special)

Abstract

This proposal is the continuation of project No. 200021_143485/1 that financed a post doctoral fellow for 2 years. The goals of the first project were 1) to provide a calibration of the carbonate clumped isotope thermometer with natural and synthetic carbonates and 2) to assess the potential and limitations of the method with two case studies: a) the Pozalagua hydrothermal dolomite system in Spain and b) the Nisku dolomites in central Alberta, Canada. In the first phase of the project we could develop 3 new temperature calibrations in the range of 3 to 95°C and demonstrate with the case studies that clumped isotope signatures in dolomites still record the original lower T signatures in spite of reaching burial diagenetic temperatures of up to 200°C. In addition we greatly improved the methodology for carbonate clumped isotope measurements leading to a reduction in sample size and improved precision. The goal of this continuation project is to extend the range of the temperature calibration to 200°C, where there are still no published studies. We will measure samples of calcite and dolomite that are already being synthesized in the laboratory at Leeds University at temperature between 60 and 200°C. This will cover a gap in temperature calibrations, and help resolve uncertainties in the application of burial isotope processes. In addition we will synthesize and analyse carbonates at T exceeding 1000°C to obtain a random isotope distribution, in order to precisely determine the phosphoric acid fractionation factor at 70°C. A second goal of the project is to further reduce the sample size necessary for a measurement to less than one milligram and increase the sample throughput. This will be accomplished by implementing a new measurement protocol we have developed in our laboratory to the Kiel-IV preparation system. Finally, we will conduct three case studies of progressive metamorphism in carbonates from contact-metamorphic aureoles. We will study aureole of the Monte Capanne pluton (Elba Island), the Campiglia Marittima intrusion (Tuscany) and the Monzoni intrusion (Dolomites) to determine the kinetics of 13C-18O bond-reordering in calcite and dolomite along the temperature gradient. This will allow evaluating the kinetics of clumped isotope reordering for calcite and dolomite and determine the closure temperature for the carbonate clumped isotope thermometer based on examples with well-constrained temperature histories. Finally these studies, will allow to explore the potential of clumped isotopes in carbonates to better constrain temperatures during contact metamorphism, deep burial diagenesis and low-grade metamorphism. These are important steps in understanding the history of sedimentary basins and heat transport in contact metamorphic aureoles.
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