zircon standard analyses round 3
play

Zircon Standard Analyses (Round #3) George Gehrels & Matt - PowerPoint PPT Presentation

Dec 05, 2022 •17 likes •547 views

LA-ICP-MS U-Th-Pb Network Zircon Standard Analyses (Round #3) George Gehrels & Matt Horstwood Data from: Willy Amidon (Middlebury College) David Barbeau (Univ South Carolina) George Gehrels (Univ of Arizona) Chris Holm-Denoma

  1. LA-ICP-MS U-Th-Pb Network Zircon Standard Analyses (Round #3) George Gehrels & Matt Horstwood Data from: Willy Amidon (Middlebury College) David Barbeau (Univ South Carolina) George Gehrels (Univ of Arizona) Chris Holm-Denoma (USGS/Denver) Matt Horstwood (British Geological Survey) Ellen Kooijman (Swedish Museum of Natural History) Ming-Chang Liu (UCLA) Kate Souders (Texas Tech Univ) Jay Thompson (Univ of Tasmania) Renjie Zhou (Univ of Queensland) Thanks to Sam Bowring & Anne Bauer (MIT) for ID/CA-TIMS analyses

  2. Plesovice = 337 Ma Seiland (Sri Lanka) = 531 Ma FC-1 = 1099 Ma Sample were blind, grains were mixed 17 labs submitted data (Lab names not reported) ==> Most 206/238 & 206/207 ages reliable to ~2% Presented at AGU and 2009 Workshop, manuscript not submitted

  6. Round #2: Interlab Comparison (2011-2013)

  7. VC 1-2 = 213 Ma Plesovice = 337 Ma Seiland (Sri Lanka) = 531 Ma FC-Z5 = 1099 Ma 9980 = 1150 Ma QGNG = 1852 Ma Blind samples, abraded grains, uncertain # of populations, uncertain proportions 208 grains provided ==> analyze 100 grains at random 10 labs submitted data (8 LA-ICPMS, 2 SIMS) (Lab names not reported) Evaluate ages & proportions

  8. 213 Ma 337 Ma 1099 Ma 531 Ma 1150 Ma 1852 Ma

  9. 213 Ma 337 Ma 1099 Ma 531 Ma 1852 Ma 1150 Ma

  10. LA-ICP-MS U-Th-Pb Network Meeting in 2013  decided to do another comparison: more standards, expanded age range, more labs

  13. 10 different standards from 28 Ma to 3.5 Ga Hired UA undergraduate students to pick grains from each standard: • 10 different standards • 100 grains of each • 100 sets ==> 100,000 grains picked! Have distributed sets to 68 different labs (some up to four sets!!) Have so far received data from 11 labs…..

  17. Matt's Instructions: • 10 analyses of each standard (cycle thru 10 times, not in sets) • Use 91500 as primary (or provide 91500 results for re-calculation)* • Report weighted mean ratios and ages (no rejection)* Report systematic (external) uncertainties (2 s )* • Decisions about data analysis & display • Which of the above are important variables? • Focus on ages or ratios? • Compare results with ID-TIMS or CA-TIMS data? • Report Internal (measurement) or Internal + External (systematic) uncertainties? • Show all sessions from each lab or average of sessions if more than one?

  44. Look at correlations with Uconc & Radiation Dosage

  45. Look at correlations with Uconc & Radiation Dosage

  47. Conclusions: 1. Need more data to reach firm conclusions... 2. Doing better than 2% for 206/238? for 206/207?

  48. Conclusions: 3. Better match with ID-TIMS or CA-TIMS?

  49. Conclusions: 3. Better match with ID-TIMS or CA-TIMS? ==> Need more samples analyzed with ID-TIMS & CA-TIMS!

  50. Conclusions: 4. Calibration with 91500 or other primary standards?

  51. Conclusions: 5. Impact of instruments & protocols?

  52. Conclusions: 6. Correction for radiation dosage and/or thermal annealing should improve precision & accuracy...

  53. Next Steps: 1. Publish this data set as-is, with more lab responses, or not at all? 2. Should we find a TIMS lab willing to complete ID-TIMS & CA-TIMS analyses on current standards? 3. Continue distributing current standard sets, or are there better samples? 4. Should future comparisons be blind? 5. Should future studies focus on specific aspects, e.g., radiation damage?

Recommend

Standard Analyses and Code Sharing Project Update (PhUSE Computational Science Working Group)

Standard Analyses and Code Sharing Project Update (PhUSE Computational Science Working Group)

Standard Analyses and Code Sharing Project Update (PhUSE Computational Science Working Group) PhUSE Webinar 16 November 2016 Working Group Vision/Goals Leverage crowd-sourcing to improve the content and implementa6on of analyses for medical

487 views • 14 slides
ICARO 2009 Round Table Discussion Cost & Economic Analyses in Radiation Oncology Prof. Rajiv

ICARO 2009 Round Table Discussion Cost & Economic Analyses in Radiation Oncology Prof. Rajiv

ICARO 2009 Round Table Discussion Cost & Economic Analyses in Radiation Oncology Prof. Rajiv Sarin, MD, FRCR Director Advanced Centre for Treatment, Research & Education in Cancer (ACTREC) TATA MEMORIAL CENTRE MUMBAI INDIA

543 views • 14 slides
Development of a ceramic coloured glaze containing zircon and study of the effects on Solar

Development of a ceramic coloured glaze containing zircon and study of the effects on Solar

Development of a ceramic coloured glaze containing zircon and study of the effects on Solar Reflectance Index (SRI) M. C. Bignozzi 1,2 , E. Rambaldi 1 , B. Mazzanti 1 , K. Harlow 3 1 Centro Ceramico, Italy 2 DICAM, University of Bologna, Italy 3

297 views • 19 slides
Toy Example Toy Example Toy Example Toy Example Toy Example D 1 weak classifiers = vertical or

Toy Example Toy Example Toy Example Toy Example Toy Example D 1 weak classifiers = vertical or

Toy Example Toy Example Toy Example Toy Example Toy Example D 1 weak classifiers = vertical or horizontal half-planes Round 1 Round 1 Round 1 Round 1 Round 1 h 1 D 2 " 1 =0.30 ! =0.42 1 Round 2 Round 2 Round 2 Round 2 Round

188 views • 5 slides
Strongly Secure One-Round Group Authenticated Key Exchange in the Standard Model Yong Li, Zheng

Strongly Secure One-Round Group Authenticated Key Exchange in the Standard Model Yong Li, Zheng

Strongly Secure One-Round GAKE Strongly Secure One-Round Group Authenticated Key Exchange in the Standard Model Yong Li, Zheng Yang Ruhr-University Bochum CANS 2013 1 / 40 Introduction, Motivation and Contributions GAKE Security Model

515 views • 50 slides
Practical Round-Optimal Blind Signatures in the Standard Model from Weaker Assumptions G.

Practical Round-Optimal Blind Signatures in the Standard Model from Weaker Assumptions G.

Practical Round-Optimal Blind Signatures in the Standard Model from Weaker Assumptions G. Fuchsbauer , C. Hanser C. Kamath , and D. Slamanig Ecole Normale Sup erieure, Paris IAIK, Graz University of Technology,

391 views • 21 slides
Investment Analyses in the Care Type II Diabetics via Group Care vs. Standard Care Jade Sanders

Investment Analyses in the Care Type II Diabetics via Group Care vs. Standard Care Jade Sanders

Cost-Effectiveness and Social Return on Investment Analyses in the Care Type II Diabetics via Group Care vs. Standard Care Jade Sanders UCLA PRIME/CDU UCLA Medical Education Program Charles R. Drew University of Medicine and Science David

413 views • 10 slides
Most traditional stories are like a round, crocheted potholder. The storyteller goes round and

Most traditional stories are like a round, crocheted potholder. The storyteller goes round and

Alberta Jones Assistant Professor, School of Education, U of A Southeast Ph.D. Candidate-Indigenous Studies, U of A Fairbanks June, 2016 Most traditional stories are like a round, crocheted potholder. The storyteller goes round and round

575 views • 20 slides
1 2 3 The Industry Standard The Industry Standard Design and investigation of rectangular,

1 2 3 The Industry Standard The Industry Standard Design and investigation of rectangular,

1 2 3 The Industry Standard The Industry Standard Design and investigation of rectangular, Design and investigation of rectangular, round, or irregular concrete sections including slenderness effects 4 Options Options Codes:

940 views • 58 slides
1 2 3 The Industry Standard The Industry Standard Design and investigation of rectangular,

1 2 3 The Industry Standard The Industry Standard Design and investigation of rectangular,

1 2 3 The Industry Standard The Industry Standard Design and investigation of rectangular, Design and investigation of rectangular, round, or irregular concrete sections including slenderness effects 4 Options Options Codes:

612 views • 27 slides
th An rs 4 th Ame Ameri rican Le Legion Riders Annual Sum Summit Merry-Go-Round Round

th An rs 4 th Ame Ameri rican Le Legion Riders Annual Sum Summit Merry-Go-Round Round

th An rs 4 th Ame Ameri rican Le Legion Riders Annual Sum Summit Merry-Go-Round Round Robin Unity Ride District Patch Sonny Decker & Jeff Hawk Merry-Go-Round & The Round Robin These month-long events are intended for our

841 views • 22 slides
Colorado Mining Association Standard Framework Meeting ALUMINUM AND IRON CMA Position - Al

Colorado Mining Association Standard Framework Meeting ALUMINUM AND IRON CMA Position - Al

Colorado Mining Association Standard Framework Meeting ALUMINUM AND IRON CMA Position - Al Current standard based on EPA document well over 20 yrs old New science and analyses are available: hardness based standards State and Federal

528 views • 16 slides
Toy Example Toy Example Toy Example Toy Example Toy Example D 1 weak classifiers = vertical or

Toy Example Toy Example Toy Example Toy Example Toy Example D 1 weak classifiers = vertical or

Toy Example Toy Example Toy Example Toy Example Toy Example D 1 weak classifiers = vertical or horizontal half-planes Round 1 Round 1 Round 1 Round 1 Round 1 h 1 D 2

210 views • 7 slides
Feed Analyses Dr. Charles C. Stallings Professor of Dairy Science Virginia Tech Wet Chemistry

Feed Analyses Dr. Charles C. Stallings Professor of Dairy Science Virginia Tech Wet Chemistry

Feed Analyses Dr. Charles C. Stallings Professor of Dairy Science Virginia Tech Wet Chemistry Can be done on any sample since it is the standard to which the NIR is calibrated Should be used to determine macro and micro mineral

397 views • 23 slides
Baseline Analyses Using Baseline Analyses Using DBP (2006) & AMP (2008) DBP (2006) & AMP

Baseline Analyses Using Baseline Analyses Using DBP (2006) & AMP (2008) DBP (2006) & AMP

Baseline Analyses Using Baseline Analyses Using DBP (2006) & AMP (2008) DBP (2006) & AMP (2008) Program Data Program Data Steven Braithwait Christensen Associates Energy Consulting Conference Call May 26, 2009 Project Objectives

513 views • 16 slides
Lessons learned from the 2 0 1 0 round of PHC and planning for the 2 0 2 0 round to m eet the

Lessons learned from the 2 0 1 0 round of PHC and planning for the 2 0 2 0 round to m eet the

UN EGM on Strengthening the Demographic Evidence Base For The Post-2015 Development Agenda, New York, 5-6 October 2015 Lessons learned from the 2 0 1 0 round of PHC and planning for the 2 0 2 0 round to m eet the post-2 0 1 5 developm ent

420 views • 15 slides
Toll Schedule Analyses Board Meeting 11-17-16 Overview n Conducted Toll Schedule Analyses per

Toll Schedule Analyses Board Meeting 11-17-16 Overview n Conducted Toll Schedule Analyses per

Toll Schedule Analyses Board Meeting 11-17-16 Overview n Conducted Toll Schedule Analyses per Authority Direction n 2 Public Meetings Dates: w 10/25/16: Destin w 10/27/16: Niceville Presented the various toll discount options Received

431 views • 21 slides
INLA workshop quiz Murray Logan August 16, 2016 Table of contents 1 Round 1: What the @#?

INLA workshop quiz Murray Logan August 16, 2016 Table of contents 1 Round 1: What the @#?

-1- INLA workshop quiz Murray Logan August 16, 2016 Table of contents 1 Round 1: What the @#? would you know 1 2 Round 2 - Science and Nature 2 3 Round 3 - Box and Flix 3 4 Round 3 - Balderdash 4 1. Round 1: What the @#? would you

535 views • 5 slides
Analyses of Variance Block 2b Types of analyses 1 way ANOVA For more than 2 levels of a

Analyses of Variance Block 2b Types of analyses 1 way ANOVA For more than 2 levels of a

Analyses of Variance Block 2b Types of analyses 1 way ANOVA For more than 2 levels of a factor between subjects ANCOVA For continuous co-varying factor, between subjects ANOVA for factorial design Multiple factors

700 views • 35 slides
Reading Strand and Ideas Standard Statement 9 Range of Reading and Standard Statement 10 Level

Reading Strand and Ideas Standard Statement 9 Range of Reading and Standard Statement 10 Level

Standard Statement 1 Standard Statement 2 Key Ideas and Details Standard Statement 3 Reading: Literature Standard Statement 4 Standard Statement 5 Craft and Structure Standard Statement 6 Standard Statement 7 Integration of Knowledge

391 views • 16 slides
WP : physics@colliders Goal 2014-2016: Preparing for Run @13TeV and physics analyses Also :

WP : physics@colliders Goal 2014-2016: Preparing for Run @13TeV and physics analyses Also :

WP : physics@colliders Goal 2014-2016: Preparing for Run @13TeV and physics analyses Also : detectors, preparing upgrades or post-LHC jeudi 27 fvrier 2014 The Higgs Is the 125 GeV Higgs the SM Higgs? measurement of standard decay

296 views • 8 slides
A Meet-in-the-Middle Attack on 8-Round AES H useyin Demirci Ali Aydn Sel cuk presented

A Meet-in-the-Middle Attack on 8-Round AES H useyin Demirci Ali Aydn Sel cuk presented

A Meet-in-the-Middle Attack on 8-Round AES H useyin Demirci Ali Aydn Sel cuk presented by Orhun Kara 1 Outline The AES A 5-round distinguisher Attack on 7-round AES-192, AES-256 and 8-round AES-256 Some optimizations

504 views • 19 slides
Early SUSY analyses with ATLAS Giacomo Polesello INFN, Sezione di Pavia Early analyses at the

Early SUSY analyses with ATLAS Giacomo Polesello INFN, Sezione di Pavia Early analyses at the

. Early SUSY analyses with ATLAS Giacomo Polesello INFN, Sezione di Pavia Early analyses at the LHC The LHC will start producing high-energy collisions in the next months Large uncertainties on the data-taking parameters: Energy (ies)

634 views • 40 slides
Chosen-Key Distinguishers on 12-Round Feistel-SP and 11-Round Collision Attacks on Its Hashing

Chosen-Key Distinguishers on 12-Round Feistel-SP and 11-Round Collision Attacks on Its Hashing

Chosen-Key Distinguishers on 12-Round Feistel-SP and 11-Round Collision Attacks on Its Hashing Modes Xiaoyang Dong and Xiaoyun Wang Shandong University, Tsinghua University FSE 2017 Tokyo, Japan Outline 2 Secret-key and Open-key Models u

526 views • 24 slides

More recommend