Braza Mary meb261@pitt.edu University of Pittsburgh https://ror.org/01an3r305 McQuarrie Nadine nmcq@pitt.edu 0000-0001-6529-778X University of Pittsburgh https://ror.org/01an3r305 Robinson Delores M dmr@ua.edu 0000-0002-7618-7209 University of Alabama https://ror.org/03xrrjk67 Webb Laura E laura.webb@uvm.edu 0000-0002-0597-5793 University of Vermont https://ror.org/0155zta11 2023 (U-Th)/He ages from zircons collected in the far western Nepal Himalaya: raw data dataset https://doi.org/10.1594/PANGAEA.960123 2023-08-24T14:00:33 https://doi.org/10.1594/PANGAEA.960122 This dataset contains the results of 11 individual (U-Th)/He analyses using zircons extracted from bedrock samples collected from medium-high grade metamorphic rocks along the Api transect in the far western Nepal Himalaya. Bedrock samples were collected for thermochronologic cooling ages to better constrain the exhumation history of the Nepal Himalaya. Analytical methods followed the general procedures outlined in Reiners (2005) and Reiners et al. (2004). The Full ZHe Data Raw contains results for each zircon grain measurement (typically three per sample). Reiners Peter W 2005 Zircon (U-Th)/He Thermochronometry journal article Reviews in Mineralogy & Geochemistry 58(1) https://doi.org/10.2138/rmg.2005.58.6 151-179 Reiners Peter W Spell Terry L Nicolescu Stefan Zanetti Kathleen A 2004 Zircon (U-Th)/He thermochronometry: He diffusion and comparisons with 40Ar/39Ar dating journal article Geochimica et Cosmochimica Acta 68(8) https://doi.org/10.1016/j.gca.2003.10.021 1857-1887 80.56953 80.94828 29.09619 29.90214 80.74124545454545 29.53574727272727 2017-05-04T03:39:38 2017-05-18T03:46:37 1459.0 3132.0 FWN17-110B 29.09619 80.56953 Nepal 1461.0 Rock sample ROCK Map unit: Sangram Fm., lithology: quartzite FWN17-111 29.17928 80.60631 Nepal 2045.0 Rock sample ROCK Map unit: Greater Himalaya, lithology: quartzite FWN17-112 29.23639 80.626 Nepal 1926.0 Rock sample ROCK Map unit: Greater Himalaya, lithology: augen gneiss FWN17-115 29.36419 80.62442 Nepal 1884.0 2017-05-04T03:39:38 Rock sample ROCK Map unit: Greater Himalaya, lithology: augen gneiss FWN17-119 29.47036 80.65711 Nepal 2261.0 2017-05-04T06:38:58 Rock sample ROCK Map unit: Syangia Fm., lithology: quartzite FWN17-131B 29.64753 80.69694 Nepal 2078.0 2017-05-05T09:03:34 Rock sample ROCK Map unit: Ranimata Fm., lithology: augen gneiss FWN17-141 29.79328 80.83011 Nepal 1459.0 2017-05-07T02:48:01 Rock sample ROCK Map unit: Kushma Fm., lithology: quartzite FWN17-145 29.81917 80.86244 Nepal 2041.0 2017-05-07T08:26:37 Rock sample ROCK Map unit: Ranimata Fm., lithology: quartzite FWN17-155 29.90214 80.94828 Nepal 3132.0 2017-05-09T07:59:37 Rock sample ROCK Map unit: Greater Himalaya, lithology: augen gneiss FWN17-158 29.86694 80.91156 Nepal 2404.0 2017-05-10T03:45:54 Rock sample ROCK Map unit: Ranimata Fm., lithology: biotite schist FWN17-197 29.51775 80.821 Nepal 1927.0 2017-05-18T03:46:37 Rock sample ROCK Map unit: Kushma Fm., lithology: quartzite 693 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Event label Event Braza Mary meb261@pitt.edu Event Latitude of event Latitude Braza Mary meb261@pitt.edu Latitude Longitude of event Longitude Braza Mary meb261@pitt.edu Longitude Elevation of event Elevation m Braza Mary meb261@pitt.edu Elevation [m] Sample code/label Sample label Braza Mary meb261@pitt.edu Sample label Location Location location Braza Mary meb261@pitt.edu Map unit Location (Map unit) Main Lithology Main lith Braza Mary meb261@pitt.edu Main lith Uranium U ng uranium Mass M http://dbpedia.org/resource/Mass Braza Mary meb261@pitt.edu U [ng] Thorium Th ng thorium http://purl.obolibrary.org/obo/CHEBI_33385 Mass M http://dbpedia.org/resource/Mass Braza Mary meb261@pitt.edu Th [ng] Uranium/Thorium ratio U/Th uranium thorium http://purl.obolibrary.org/obo/CHEBI_33385 ratio Braza Mary meb261@pitt.edu U/Th Age, mineral Age mineral Ma age http://purl.obolibrary.org/obo/PATO_0000011 mineral http://purl.obolibrary.org/obo/CHEBI_46662 Braza Mary meb261@pitt.edu raw age Age mineral [Ma] (raw age) Age, mineral, standard deviation Age mineral std dev ± age http://purl.obolibrary.org/obo/PATO_0000011 mineral http://purl.obolibrary.org/obo/CHEBI_46662 standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Braza Mary meb261@pitt.edu 1s Age mineral std dev [±] (1s) alpha-ejection correction Ft https://doi.org/10.1016/j.gca.2003.10.021 Braza Mary meb261@pitt.edu Ft 238U Ft (Ft 238U) alpha-ejection correction Ft https://doi.org/10.1016/j.gca.2003.10.021 Braza Mary meb261@pitt.edu Ft 235U Ft (Ft 235U) alpha-ejection correction Ft https://doi.org/10.1016/j.gca.2003.10.021 Braza Mary meb261@pitt.edu Ft 232Th Ft (Ft 232Th) alpha-ejection correction Ft https://doi.org/10.1016/j.gca.2003.10.021 Braza Mary meb261@pitt.edu Ft 147Sm Ft (Ft 147Sm) Size Size µm size http://purl.obolibrary.org/obo/PATO_0000117 Length L http://dbpedia.org/resource/Length Braza Mary meb261@pitt.edu Rs: width of the rims around the crystals Size [µm] (Rs: width of the rims around ...) Age, mineral Age mineral Ma age http://purl.obolibrary.org/obo/PATO_0000011 mineral http://purl.obolibrary.org/obo/CHEBI_46662 Braza Mary meb261@pitt.edu corrected age Age mineral [Ma] (corrected age) Age, mineral, standard deviation Age mineral std dev ± age http://purl.obolibrary.org/obo/PATO_0000011 mineral http://purl.obolibrary.org/obo/CHEBI_46662 standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Braza Mary meb261@pitt.edu 1s Age mineral std dev [±] (1s) Mass Mass g https://en.wikipedia.org/wiki/Mass Mass M http://dbpedia.org/resource/Mass Braza Mary meb261@pitt.edu Mass [g] Uranium U mg/kg uranium Braza Mary meb261@pitt.edu ppm U (Zr) U [mg/kg] (ppm U (Zr)) Thorium Th mg/kg thorium http://purl.obolibrary.org/obo/CHEBI_33385 Braza Mary meb261@pitt.edu ppm Th (Zr) Th [mg/kg] (ppm Th (Zr)) Helium-4 4He nmol/kg helium-4 4He https://en.wikipedia.org/wiki/Isotopes_of_helium Molar Concentration Braza Mary meb261@pitt.edu 4He [nmol/kg] Uranium U mg/kg uranium Braza Mary meb261@pitt.edu ppm eU (Zr) U [mg/kg] (ppm eU (Zr)) Ratio Ratio ratio Braza Mary meb261@pitt.edu eU (morph)/eU (Zr) Ratio (eU (morph)/eU (Zr)) CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels ProcLevel3 PANGAEA data processing level 3 https://wiki.pangaea.de/wiki/Processing_levels#PANGAEA_data_processing_level_3 citable cooling age Himalaya Nepal thermochronology ZHe zircon (U-Th)/He thermochronology author75788 author75789 author75917 author75918 author75919 author75920 author92319 author92320 curlevel30 event3027585 event3027586 event3027587 event3027588 event3027589 event3027590 event3027591 event3027592 event3027593 event3027594 event3027595 geocode1599 geocode1600 geocode1601 geocode8128 inst21184 inst21185 inst505 journal13933 journal6009 license21 method11547 param102659 param1546 param160837 param171878 param171880 param1720 param184293 param29333 param50534 param517660 param53356 param53778 param701 param790 param8202 pi92319 proclevel40 ref104450 ref104452 term1073135 term1073193 term1073204 term1073322 term2663532 term2663825 term30984 term37764 term40550 term41005 term43863 term43892 term44030 term47641 term52456 term53816 term53818 term53819 term72023