Announce your papers here

06 Sep 2014

This is a placeholder forum topic where you can reply and annouce new papers on clumped isotopes. This conversation will remain a sticky, so it will always be on top of the page. I suggest you provide a link to the paper in your message.

stefanob
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Joined: Sep 18 2011
Hi Agit,  in the Müller et

Hi Agit, 

in the Müller et al. paper I posted yesterday we have recalculated all data with the parameter proposed i the Daeron paper. Inigo recalculated all the data including the heated and equilibrated  gas data we originally used to determine our "accepted values" for the  ETH standards and found differences of  -0.003 ‰ for ETH-1, -0.008 ‰ for ETH-2, -0.011 ‰ for ETH-3, -0.014 ‰ for ETH-4,  we recalculated other data and never found differences of more than 15 ppm if I remember correctly.

We have not recalculated the Kele et al. 2015 calibration yet,  but I dont think it will make a significant difference onthe slope. The Kelston calibration is very close to the Kele et al.

cheers

Stefano

hagit
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Joined: Dec 21 2011
Thanks Stefano I would not

Thanks Stefano

I would not expect to get large changes in samples that has d13C close to normal carbonate. But it can be larger for very light samples , such as the Zaarur data and the light ETH samples.

hagit

golack
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Joined: May 16 2016
HI Hagit-- A quick review of

HI Hagit--

A quick review of our model. It is a matrix of data points with varying 13C and 18O. IF the matrix collapses down onto a line, then that is a robust result.  I want  to be able to pick any three data points that vary in 13C and 18O, plot them up, and see the effect.  That happens in (d13C-d18O) space when I model 2010 vs 1995 parameter sets.  IF it's plotted in d47 space, I get a diamond shape--and any three points could end up giving me a line with any slope.  Looking at 2010 vs SSH, I'll get  a really thick line, more like a polka dot parallelogram, when I plot D47 in d47 or (d13C-d18O) space.  Each shows an overall trend, but drawing a line thru three data points varying in 13C and 18O will give a range of results.  In the case of 2010 vs SSH, the matrix collapses to a line if plotted against either 13C or 18O--which does not happen for 2010 vs 1995.

  The 2010 and 1995 sets vary in lambda and K, but end up with similar absolute 17O/16O vsmow ratio.  Varying K, or  lambda and K while holding 17O/16O constant,  gives the same behavior as seen comparing 2010 vs 1995 data sets.  Just varying lambda gives really thick lines in all plots (D47 vs d47, 13C, 18O, 13C-18O). IF you could get a good fit for D47 vs  d47, then the matrix collapses to a line in (d13C-d18O) space; and if you could get a good fit for D47 vs 13C, then the matrix collapses to a line in 18O space. The matrix is just a series of parallel lines (or curves if there is a baseline issue). Shifting both the 17O/16O value for the reference  and the d17O value for a given 18O value plays with the 13C and expected d47  determination in strange ways ;)

take care,

gerry

p.s..  ETH1-4 do not vary much in  (d13C-d18O) space and in our model would not be expected to vary much relative to each other when changing parameter sets, especially after D47 vs d47 correction..  

p.p.s. The current parameter set, 2010, may not be the best one at all times--perhaps affected by tuning or me prepping samples...

Bonifacie
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Joined: Sep 12 2012
Hello all   Our paper on

Hello all

 

Our paper on dolomite (and other carbonates) calibration is in press and available online:

http://www.sciencedirect.com/science/article/pii/S0016703716306706  

 

The citation is: Bonifacie M., Calmels D., Eiler J. M, Horita, J., Chaduteau C., Vasconcelos, C., Agrinier, P., Katz A., Passey, B.H., Ferry J.M., Bourrand J.J. (2016  in press).  Experimental calibration of the dolomite clumped isotope thermometer from 25 to 350°C, and implications for a universal calibration for all (Ca, Mg, Fe)CO3 carbonates. Geochimica et Cosmochimica Acta,

DOI : 10.1016/j.gca.2016.11.028

 

Magali

 

MagaliBonifacie

Institut de Physique du Globe de Paris – Sorbonne Paris Cité

 

stefanob
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Joined: Sep 18 2011
New paper on LIDI-KIEL    

New paper on LIDI-KIEL

     HI everybody,

our new paper on LIDI-KIel performance for clumped isotopes is now online on Rapid Communications in Mass Spectrometry

http://onlinelibrary.wiley.com/doi/10.1002/rcm.7878/epdf

All data (samples and standards) are provided in the supplementary information as an "Easotope Database", after you download and save it to your computer,  start Easotope. In the Easotope login window you have to choose "configure new database" , locate the database and select it. after clicking "open" Easotope will ask you for a username and password  both are  admin. with that you can have alook at all data of the measurement period we used for this work.

best regards
Stefano 

stefanob
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Joined: Sep 18 2011
New paper on LIDI-KIEL    

New paper on LIDI-KIEL

     HI everybody,

our new paper on LIDI-KIel performance for clumped isotopes is now online on Rapid Communications in Mass Spectrometry

http://onlinelibrary.wiley.com/doi/10.1002/rcm.7878/epdf

All data (samples and standards) are provided in the supplementary information as an "Easotope Database", after you download and save it to your computer,  start Easotope. In the Easotope login window you have to choose "configure new database" , locate the database and select it. after clicking "open" Easotope will ask you for a username and password  both are  admin. with that you can have alook at all data of the measurement period we used for this work.

best regards
Stefano 

Xavier Mangenot
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Joined: Sep 3 2014
Hi all, Just wanted to let
Hi all,
Just wanted to let you know that we have two new companion articles that might be of interest for you if you are working on carbonate diagenesis and sedimentary basin analysis. 
Mangenot, X., Bonifacie, M. Gasparrini, M., Goetz, A., Chaduteau, C., Ader, M., Rouchon, V. (2017). Coupling D47 and fluid inclusion thermometries on carbonate cements to precisely reconstruct the temperature, salinity and d18O of circulating paleowater in sedimentary basins. Manuscript in press for publication in Chemical Geology.
http://www.sciencedirect.com/science/article/pii/S0009254117305661
Mangenot, X.,  Gasparrini, M., Rouchon, V., Bonifacie, M. (2017)  Basin scale thermal and fluid-flow histories revealed by carbonate clumped isotopes (D47) - Middle Jurassic of the Paris Basin. Manuscript in press for publication in Sedimentology. 
http://onlinelibrary.wiley.com/doi/10.1111/sed.12427/full

Cheers

Xavier Mangenot

 

stefanob
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Joined: Sep 18 2011
Hi everybody,  new papers

Hi everybody, 

new papers online.

Fernadez et al.  A Reassessment of the Precision of Carbonate Clumped Isotope Measurements: Implications for Calibrations and Paleoclimate Reconstructions  http://onlinelibrary.wiley.com/doi/10.1002/2017GC007106/full

and Rodriguez-Sanz et 

Penultimate deglacial warming across the Mediterranean Sea revealed by clumped isotopes in foraminifera

       https://www.nature.com/articles/s41598-017-16528-6

cheers
Stefano 

Kate Huntington's picture
Kate Huntington
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Joined: Sep 21 2011
Huntington, K.W., and

Huntington, K.W., and Klepeis, K.A., with 66 community contributors, 2018, Challenges and opportunities for research in tectonics: Understanding deformation and the processes that link Earth systems, from geologic time to human time. A community vision document submitted to the U.S. National Science Foundation. University of Washington, 84 pp., https://doi.org/10.6069/H52R3PQ5

Hello all,

The tectonics community vision document prepared for the U.S. National Science Foundation is now available (final professionally formated version with citation and doi). It is obviously much broader than clumped isotopes, but several of the themes are near and dear to the hearts of clumped isotopists.... 

Both lower and high-resolution versions are available for download at the doi link above. All figures are available for community use in presentations and teaching with attribution (see Figure Credits in back matter). 

The document is based on over a year and a half of community discussion and data gathering. This included contributions of ~90 scientists at a 3-day workshop (EAR-1542001 to B. Tikoff, L. Goodwin, Y. Kuiper) and idea papers contributed by participants as well as 43 scientists who did not attend the workshop. Extensive community input was gathered before, during, and after that workshop, at town hall meetings at the national GSA and AGU meetings, through online surveys, and through focus group discussions. The draft document was circulated for community comment in September 2017. Feedback and discussion continued through the Future of Tectonics Initiative at the GSA annual meeting in October 2017, which involved 13 sessions and nearly 270 abstracts related to the vision document themes. The result is a community document that incorporates the opinions of hundreds of scientists and includes direct contributions from nearly 70 people.

Because of the US NSF focus the project primarily involved US scientists, but we hope it will be part of ongoing broader conversations with the international scientific community. This effort has been well received by the US NSF, and opportunities exist to advance portions of the vision right now. Spread the word - this is a great time to champion a cause!

All the best,

Kate

Kate Huntington, nee Ruhl
Associate Professor, Dept. of Earth and Space Sciences
University of Washington, Seattle, WA
kate1@uw.edu; http://faculty.washington.edu/kate1

devans
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Joined: Apr 24 2016
Dear all, Our paper on

Dear all,

Our paper on coupled clumped isotopes-Mg/Ca in foraminifera is now online, with application to Eocene SST and seawater chemistry reconstruction:

Eocene greenhouse climate revealed by coupled clumped isotope-Mg/Ca thermometry

http://www.pnas.org/content/early/2018/01/12/1714744115.abstract

Best regards

David

Mathieu Daëron's picture
Mathieu Daëron
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Joined: Sep 17 2014
Dear all, Our recent

Dear all,

Our recent calibration paper on foraminifera is now online, and here is an open-access link to it (expires on September 28, 2018 ):

https://authors.elsevier.com/c/1XXCl3p4ZCYYo

This is Marion Peral's first article as a first author. She single-handedly picked, cleaned and analyzed about 1,700 mg of forams for this work. Congratulations, Marion!

Cheers,

-Mathieu

stefanob
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Joined: Sep 18 2011
Dear all,  our paper Reducing

Dear all, 

our paper

Reducing Uncertainties in Carbonate Clumped Isotope Analysis Through Consistent CarbonateBased Standardization

 

is now online (open access)

https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2017GC007385

cheers

Stefano

 

Mathieu Daëron's picture
Mathieu Daëron
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Joined: Sep 17 2014
Dear all, May I interest you

Dear all,

May I interest you in two recent publications from our group?

Seafloor weathering and the oxygen isotope ratio in seawater: Insight from whole-rock δ18O and carbonate δ18O and Δ47 from the Troodos ophiolite. Coogan, Daëron, and Gillis (2019), Earth and Planetary Science Letters (https://doi.org/10.1016/j.epsl.2018.12.014)

Most Earth-surface calcites precipitate out of isotopic equilibrium. Daëron, Drysdale, Peral, Huyghe, Blamart, Coplen, Lartaud, and Zanchetta (2019), Nature Communications (https://doi.org/10.1038/s41467-019-08336-5)

For those of you attending, see you all in Long Beach,

- Mathieu

clairev's picture
clairev
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Joined: Oct 7 2015
Dear all,  Our paper on early

Dear all, 

Our paper on early dolomite recrystallization evidenced by clumped isotope thermometry and X-Ray diffraction is now available online:

https://www.sciencedirect.com/science/article/pii/S0016703719300894?dgcid=author

I would love to have your feedback,

Thanks

Claire

clairev's picture
clairev
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Joined: Oct 7 2015
Dear all,  Our paper on early

Dear all, 

Our paper on early dolomite recrystallization evidenced by clumped isotope thermometry and X-Ray diffraction is now available online:

https://www.sciencedirect.com/science/article/pii/S0016703719300894?dgcid=author

I would love to have your feedback,

Thanks

Claire

jfiebig
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Joined: May 27 2019
Hi Folks, for those of you

Hi Folks,

for those of you who are interested: carbonate D48 paper is available online now, will take a few more days until the printed version appears. In this paper we anchor ETH standards to the CDES.

https://doi.org/10.1016/j.chemgeo.2019.05.019

Jens

Philip Staudigel
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Joined: Oct 17 2018
Hi All, Peter's and my new

Hi All,

Peter's and my new paper on clumped isotopes during burial diagenesis of Bahamian sediments is out. We find that periplatform sediments can continue to recrystallize in a closed system even after aragonite has neomorphosed to calcite. 

https://www.sciencedirect.com/science/article/pii/S0016703719302595

- Philip