This README_Epidote.txt file was generated by Alfons Berger ----------------------------------- General information ----------------------------------- Title: “Epidote U–Pb geochronology and isotope geochemistry to trace the hydration of the continental crust in orogens”-Dataset Contributor information: Name: Veronica Peverelli Role/Function: Data collector and principal investigator Institution: University of Bern Address: Bern Martin Wille Role/Function: Data collector Institution: University of Bern Address: Bern Thomas Pettke Role/Function: Data collector Institution: University of Bern Address: Bern Francesca Piccoli Role/Function: Data collector Institution: University of Bern Address: Bern Pierre Lanari Role/Function: Data collector Institution: University of Bern Address: Bern Andreas Mulch Role/Function: Data collector Institution: University of Fankfurt Address: Frankfurt Alfons Berger Role/Function: Project leader Institution: University of Bern Adress: Bern 3. Date of data collection Oktober 2018-August 2022 4. Geographic position of samples 4.1 Aar massif, Central Alps, Switzerland 4.2 Albula region, Eastern Alps, Switzerland 5. Keywords epidote dating; fluid flow in continental crust, Sr-isotopes, Pb-isotopes, H-isotopes 6. Information about funding sources that supported the collection of the data: Funding agency name: Swiss National Science Foundation Grant number: 1200021 178785 ------------------- SHARING/ACCESS INFORMATION ------------------- 1. Licenses/restrictions placed on the data: CC0 2. Links to publications that cite or use the data: Peverelli, V., 2022. Epidote U–Pb geochronology and isotope geochemistry to trace the hydration of the continental crust in orogens. Dissertation Uni Bern 3. Links to other publicly accessible locations of the data: 4. Links/relationships to additional data sets: 5. Was data derived from another source? no. 6. Recommended citation for this dataset: Peverelli, V., 2022. Epidote U–Pb geochronology and isotope geochemistry to trace the hydration of the continental crust in orogens. Dissertation Uni Bern --------------------- DATA & FILE OVERVIEW --------------------- Folder-Name: EMPA_analysis File_Names: PhD Peverelli_EMPA Part1 –Part9 All EMPA data measured by EPMA in epidote 10 parts sorted after time of measurement Folder-Name: H-isotopes_bulk File_Names: PhD Peverelli_H isotopes data Part1-2 All H isotope data measured in epidote at Goethe Universität Frankfurt with Adreas Mulch. Folder-Name: Trace elements_Geolas File_Names: PhD Peverelli_LA_ICP-MS TTE Data_Geolas_laser_System Part1-2 (Part1-2 sorted after sample) Trace element data measured in epidote by LA-ICP-MS on a Geolas Pro 193 nm ArF excimer laser (Coherent, USA) coupled with an ELAN DRCe quadrupole ICP-MS (QMS; Perkin Elmer, USA). GSD-1G from the USGS was employed as the external standard, whereas quality control was monitored by measuring SRM612 from NIST measured as an unknown. A true-time linear drift correction was applied by bracketing standardization. Data were reduced offline using SILLS (Guillong et al., 2008), with the sum of measured total oxides (98.3% for epidote and 100% for SRM-NIST 612) used for internal standardization (compare Halter et al., 2002). Limits of detection were rigorously calculated for each element in each analysis by employing the formulation detailed in Pettke et al. (2012). Folder-Name: Trace elements_Res_Laser_System File_Names: PhD Peverelli_LA_ICP-MS TTE Data_Geolas_laser_System Part1-22 (Part1-22 sorted after sample) Trace element data measured in epidote by LA-ICP-MS on a RESOlutionSE 193 nm excimer laser system (Applied Spectra, USA) equipped with an S-155 large-volume constant-geometry chamber (Laurin Technic, Australia) coupled with an Agilent 7900 ICP-QMS. GSD-1G from the USGS was employed as the external standard, whereas quality control was monitored by measuring SRM612 from NIST measured as an unknown. A true-time linear drift correction was applied by bracketing standardization. Data were reduced offline using SILLS (Guillong et al., 2008), with the sum of measured total oxides (98.3% for epidote and 100% for SRM-NIST 612) used for internal standardization (compare Halter et al., 2002). Limits of detection were rigorously calculated for each element in each analysis by employing the formulation detailed in Pettke et al. (2012). Folder-Name: U-Pb_isotopedata_LA-ICP-MS File_Names: PhD-Peverelli_La_ICP_MS-U-Pb_ Part1-11 (Part1-11 sorted after measuring day) All U-Pb isotope data measured by LA-ICP-MS in the studied epidote samples from 2019 until 2022. Data reduction is carried out in Iolite using Tara allanite (Smye et al., 2014) as primary reference material. Allanite samples CAP, CAPb, AVC and SWN208 are used as secondary reference materials for quality control. Folder-Name: Sr-isotope data-ICPMS File_Names: PhD-Peverelli_Neptune_ICP-MS_Sr isotope data_25Feb22_ Part1-2 (Part1-2 sorted after sample) Sr isotope data measured in epidote and rocks by Neptune ICP-MS. SRM987 (Weis et al., 2006) is used as internal standard and for quality control. For Sr isotope measurements, the IUPAC 87Rb/85Rb and 88Sr/86Sr values of 0.385617 and 8.735209 were used to correct for the interference of 87Rb and within-run mass bias, respectively. Folder-Name: Sr-isotopedata-TIMS File_Names: PhD-Peverelli_TIMS- Part1-27 (sorted after measuring day and sample : Part1-27) Sr isotope data measured in epidote by TIMS. SRM987 (Weis et al., 2006) is used as internal standard and for quality control, while GSP-2 and AGV-2 standards (Weis et al., 2006) for quality control. For Sr isotope measurements, the IUPAC 87Rb/85Rb and 88Sr/86Sr values of 0.385617 and 8.735209 were used to correct for the interference of 87Rb and within-run mass bias, respectively. Folder-Name: Pb-isotopedata_ICPMS File_Names: PhD-Peverelli_Pb_Isotopedata_Neptune ICP-MS Part1-22 (sorted after measuring day and sample : Part1-22) 207Pb/206Pb ratios measured in epidote microseparates by Neptune ICP-MS, and 238U/206Pb ratios measured at the Geography Department of University of Bern. For Pb isotope measurements, Tl was added to samples and standards to correct for instrumental mass fractionation with repeated measurements of NIST SRM 981 to quantify the external reproducibility of the measurements. Folder-Name: O_isotope File_Names: PhD-Peverelli_O_isotopedata_UniL Part1-2 O isotope data measured in epidote and quartz grains by Benita Putlitz at University of Lausanne. -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data have been described in dissertation "Epidote U–Pb geochronology and isotope geochemistry to trace the hydration of the continental crust in orogens”. Dissertation Uni Bern 2. Methods for processing the data: See above 3. Instrument- or software-specific information needed to interpret the data: - 4. Standards and calibration information: See above 5. Environmental/experimental conditions: - 6. Describe any quality-assurance procedures performed on the data: See above 7. People involved with sample collection, processing, analysis and/or submission: See above