/* DATA DESCRIPTION: Citation: Braza, Mary; McQuarrie, Nadine; Robinson, Delores M; Webb, Laura E (2023): (U-Th)/He ages from zircons collected in the far western Nepal Himalaya: raw data [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.960123, In: Braza, M et al. (2023): (U-Th)/He ages from zircons collected in the far western Nepal Himalaya [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.960122 Abstract: 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). Keyword(s): cooling age; Himalaya; Nepal; thermochronology; ZHe; zircon (U-Th)/He thermochronology References: Reiners, Peter W (2005): Zircon (U-Th)/He Thermochronometry. Reviews in Mineralogy & Geochemistry, 58(1), 151-179, https://doi.org/10.2138/rmg.2005.58.6 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. Geochimica et Cosmochimica Acta, 68(8), 1857-1887, https://doi.org/10.1016/j.gca.2003.10.021 Coverage: MEDIAN LATITUDE: 29.535747 * MEDIAN LONGITUDE: 80.741245 * SOUTH-BOUND LATITUDE: 29.096190 * WEST-BOUND LONGITUDE: 80.569530 * NORTH-BOUND LATITUDE: 29.902140 * EAST-BOUND LONGITUDE: 80.948280 DATE/TIME START: 2017-05-04T03:39:38 * DATE/TIME END: 2017-05-18T03:46:37 MINIMUM ELEVATION: 1459.0 m * MAXIMUM ELEVATION: 3132.0 m Event(s): FWN17-110B * LATITUDE: 29.096190 * LONGITUDE: 80.569530 * ELEVATION: 1461.0 m * LOCATION: Nepal * METHOD/DEVICE: Rock sample (ROCK) * COMMENT: Map unit: Sangram Fm., lithology: quartzite FWN17-111 * LATITUDE: 29.179280 * LONGITUDE: 80.606310 * ELEVATION: 2045.0 m * LOCATION: Nepal * METHOD/DEVICE: Rock sample (ROCK) * COMMENT: Map unit: Greater Himalaya, lithology: quartzite FWN17-112 * LATITUDE: 29.236390 * LONGITUDE: 80.626000 * ELEVATION: 1926.0 m * LOCATION: Nepal * METHOD/DEVICE: Rock sample (ROCK) * COMMENT: Map unit: Greater Himalaya, lithology: augen gneiss FWN17-115 * LATITUDE: 29.364190 * LONGITUDE: 80.624420 * DATE/TIME: 2017-05-04T03:39:38 * ELEVATION: 1884.0 m * LOCATION: Nepal * METHOD/DEVICE: Rock sample (ROCK) * COMMENT: Map unit: Greater Himalaya, lithology: augen gneiss FWN17-119 * LATITUDE: 29.470360 * LONGITUDE: 80.657110 * DATE/TIME: 2017-05-04T06:38:58 * ELEVATION: 2261.0 m * LOCATION: Nepal * METHOD/DEVICE: Rock sample (ROCK) * COMMENT: Map unit: Syangia Fm., lithology: quartzite FWN17-131B * LATITUDE: 29.647530 * LONGITUDE: 80.696940 * DATE/TIME: 2017-05-05T09:03:34 * ELEVATION: 2078.0 m * LOCATION: Nepal * METHOD/DEVICE: Rock sample (ROCK) * COMMENT: Map unit: Ranimata Fm., lithology: augen gneiss FWN17-141 * LATITUDE: 29.793280 * LONGITUDE: 80.830110 * DATE/TIME: 2017-05-07T02:48:01 * ELEVATION: 1459.0 m * LOCATION: Nepal * METHOD/DEVICE: Rock sample (ROCK) * COMMENT: Map unit: Kushma Fm., lithology: quartzite FWN17-145 * LATITUDE: 29.819170 * LONGITUDE: 80.862440 * DATE/TIME: 2017-05-07T08:26:37 * ELEVATION: 2041.0 m * LOCATION: Nepal * METHOD/DEVICE: Rock sample (ROCK) * COMMENT: Map unit: Ranimata Fm., lithology: quartzite FWN17-155 * LATITUDE: 29.902140 * LONGITUDE: 80.948280 * DATE/TIME: 2017-05-09T07:59:37 * ELEVATION: 3132.0 m * LOCATION: Nepal * METHOD/DEVICE: Rock sample (ROCK) * COMMENT: Map unit: Greater Himalaya, lithology: augen gneiss FWN17-158 * LATITUDE: 29.866940 * LONGITUDE: 80.911560 * DATE/TIME: 2017-05-10T03:45:54 * ELEVATION: 2404.0 m * LOCATION: Nepal * METHOD/DEVICE: Rock sample (ROCK) * COMMENT: Map unit: Ranimata Fm., lithology: biotite schist FWN17-197 * LATITUDE: 29.517750 * LONGITUDE: 80.821000 * DATE/TIME: 2017-05-18T03:46:37 * ELEVATION: 1927.0 m * LOCATION: Nepal * METHOD/DEVICE: Rock sample (ROCK) * COMMENT: Map unit: Kushma Fm., lithology: quartzite Parameter(s): Event label (Event) * PI: Braza, Mary (meb261@pitt.edu) Latitude of event (Latitude) * PI: Braza, Mary (meb261@pitt.edu) Longitude of event (Longitude) * PI: Braza, Mary (meb261@pitt.edu) Elevation of event [m] (Elevation) * PI: Braza, Mary (meb261@pitt.edu) Sample code/label (Sample label) * PI: Braza, Mary (meb261@pitt.edu) Location (Location) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: Map unit Main Lithology (Main lith) * PI: Braza, Mary (meb261@pitt.edu) Uranium [ng] (U) * PI: Braza, Mary (meb261@pitt.edu) Thorium [ng] (Th) * PI: Braza, Mary (meb261@pitt.edu) Uranium/Thorium ratio (U/Th) * PI: Braza, Mary (meb261@pitt.edu) Age, mineral [Ma] (Age mineral) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: raw age Age, mineral, standard deviation [±] (Age mineral std dev) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: 1s alpha-ejection correction (Ft) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: Ft 238U alpha-ejection correction (Ft) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: Ft 235U alpha-ejection correction (Ft) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: Ft 232Th alpha-ejection correction (Ft) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: Ft 147Sm Size [µm] (Size) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: Rs: width of the rims around the crystals Age, mineral [Ma] (Age mineral) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: corrected age Age, mineral, standard deviation [±] (Age mineral std dev) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: 1s Mass [g] (Mass) * PI: Braza, Mary (meb261@pitt.edu) Uranium [mg/kg] (U) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: ppm U (Zr) Thorium [mg/kg] (Th) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: ppm Th (Zr) Helium-4 [nmol/kg] (4He) * PI: Braza, Mary (meb261@pitt.edu) Uranium [mg/kg] (U) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: ppm eU (Zr) Ratio (Ratio) * PI: Braza, Mary (meb261@pitt.edu) * COMMENT: eU (morph)/eU (Zr) License: Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/) Status: Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) * Processing Level: PANGAEA data processing level 3 (URI: https://wiki.pangaea.de/wiki/Processing_levels#PANGAEA_data_processing_level_3) Size: 693 data points */ Event Latitude Longitude Elevation [m] Sample label Location (Map unit) Main lith U [ng] Th [ng] U/Th Age mineral [Ma] (raw age) Age mineral std dev [±] (1s) Ft (Ft 238U) Ft (Ft 235U) Ft (Ft 232Th) Ft (Ft 147Sm) Size [µm] (Rs: width of the rims around ...) Age mineral [Ma] (corrected age) Age mineral std dev [±] (1s) Mass [g] U [mg/kg] (ppm U (Zr)) Th [mg/kg] (ppm Th (Zr)) 4He [nmol/kg] U [mg/kg] (ppm eU (Zr)) Ratio (eU (morph)/eU (Zr)) FWN17-110B 29.0962 80.5695 1461 19B902_FWN17_110B_Zr1 Sangram quartzite 0.458847482 0.291496177 0.651716778 7.975493937 0.102788313 0.747 0.710 0.710 0.919 47.34 10.77 0.14 3.05E-06 150.23 95.44 7430 172.65 0.78 FWN17-110B 29.0962 80.5695 1461 19B903_FWN17_110B_Zr2 Sangram quartzite 3.362634624 0.865939659 0.264181463 52.833678360 0.707481948 0.692 0.650 0.650 0.901 38.26 76.60 1.03 1.97E-06 1703.21 438.61 516617 1806.28 0.73 FWN17-110B 29.0962 80.5695 1461 19B904_FWN17_110B_Zr3 Sangram quartzite 1.385629486 0.130966140 0.096963058 2.659584239 0.036658608 0.688 0.645 0.645 0.899 37.67 3.88 0.05 1.25E-06 1111.13 105.02 16273 1135.81 0.70 FWN17-111 29.1793 80.6063 2045 19B896_FWN17_111_Zr1 Greater Himalaya quartzite 4.359280135 1.213518808 0.285578906 10.448115880 0.139247291 0.766 0.732 0.732 0.926 51.51 13.70 0.18 4.18E-06 1042.44 290.19 62581 1110.63 0.75 FWN17-111 29.1793 80.6063 2045 19B897_FWN17_111_Zr2 Greater Himalaya quartzite 6.597611529 2.068064462 0.321567184 12.400183210 0.160601535 0.794 0.763 0.763 0.935 59.03 15.68 0.20 6.80E-06 970.63 304.25 69710 1042.13 0.91 FWN17-111 29.1793 80.6063 2045 19B898_FWN17_111_Zr3 Greater Himalaya quartzite 3.493288654 0.445028125 0.130691510 11.587355100 0.159435717 0.772 0.739 0.739 0.928 52.98 15.05 0.21 4.88E-06 715.22 91.12 46022 736.63 0.85 FWN17-112 29.2364 80.6260 1926 19B905_FWN17_112_Zr1 Greater Himalaya augen gneiss 9.310504059 0.590317239 0.065043914 10.097799540 0.142919493 0.799 0.769 0.769 0.937 60.66 12.66 0.18 6.00E-06 1552.70 98.45 85773 1575.84 0.77 FWN17-112 29.2364 80.6260 1926 19B906_FWN17_112_Zr2 Greater Himalaya augen gneiss 1.268598583 0.186699018 0.150977491 10.460112120 0.143485975 0.682 0.638 0.638 0.897 36.88 15.40 0.21 2.06E-06 614.86 90.49 35875 636.13 0.83 FWN17-112 29.2364 80.6260 1926 19B907_FWN17_112_Zr3 Greater Himalaya augen gneiss 1.201705151 0.172051623 0.146877490 11.804849390 0.166186957 0.711 0.670 0.670 0.907 40.98 16.67 0.24 2.01E-06 599.25 85.80 39428 619.42 0.82 FWN17-115 29.3642 80.6244 1884 19B899_FWN17_115_Zr1 Greater Himalaya augen gneiss 1.761565496 0.318037439 0.185214014 8.889397271 0.119164555 0.732 0.694 0.694 0.914 44.45 12.20 0.16 3.07E-06 573.16 103.48 28634 597.48 0.83 FWN17-115 29.3642 80.6244 1884 19B900_FWN17_115_Zr2 Greater Himalaya augen gneiss 6.520681707 1.710603896 0.269123020 9.452038613 0.125007951 0.786 0.755 0.755 0.932 56.76 12.07 0.16 5.72E-06 1140.04 299.07 61689 1210.32 0.87 FWN17-115 29.3642 80.6244 1884 19B901_FWN17_115_Zr3 Greater Himalaya augen gneiss 1.764026070 0.395487912 0.229997231 8.954862881 0.119875711 0.746 0.710 0.710 0.919 47.31 12.04 0.16 3.63E-06 486.25 109.01 24714 511.87 0.73 FWN17-119 29.4704 80.6571 2261 19B915_FWN17_119_Zr1 Syangia quartzite 0.388987008 0.173998618 0.458886303 5.641569989 0.073613190 0.659 0.613 0.613 0.889 34.16 8.63 0.11 1.02E-06 379.77 169.88 12768 419.69 0.73 FWN17-119 29.4704 80.6571 2261 19B916_FWN17_119_Zr2 Syangia quartzite 2.208574072 0.889434511 0.413139195 7.531378449 0.096397792 0.761 0.727 0.727 0.924 50.43 9.95 0.13 3.28E-06 674.08 271.47 29971 737.88 0.79 FWN17-119 29.4704 80.6571 2261 19B917_FWN17_119_Zr3 Syangia quartzite 1.465636541 1.015802825 0.711012971 6.836528556 0.085590252 0.739 0.702 0.702 0.917 45.93 9.32 0.12 2.13E-06 688.84 477.42 29549 801.03 0.71 FWN17-131B 29.6475 80.6969 2078 19B911_FWN17_131B_Zr1 Ranimata augen gneiss 2.314665835 0.503869540 0.223318239 5.835916999 0.078735103 0.791 0.760 0.760 0.934 58.22 7.40 0.10 6.38E-06 362.56 78.92 11988 381.11 0.77 FWN17-131B 29.6475 80.6969 2078 19B912_FWN17_131B_Zr2 Ranimata augen gneiss 1.526522089 0.982434321 0.660229347 9.668588892 0.119675372 0.804 0.776 0.776 0.938 62.49 12.09 0.15 7.54E-06 202.59 130.38 12169 233.23 0.70 FWN17-131B 29.6475 80.6969 2078 19B913_FWN17_131B_Zr3 Ranimata augen gneiss 1.541293618 0.433514782 0.288544581 5.301874884 0.071178925 0.784 0.752 0.752 0.932 56.20 6.79 0.09 4.55E-06 338.69 95.26 10320 361.07 0.74 FWN17-141 29.7933 80.8301 1459 19B918_FWN17_141_Zr1 Kushma quartzite 5.910857768 14.376071060 2.495077808 1.356087927 0.014346984 0.833 0.808 0.808 0.948 73.85 1.65 0.02 1.45E-05 406.93 989.72 4689 639.52 0.74 FWN17-141 29.7933 80.8301 1459 19B919_FWN17_141_Zr2 Kushma quartzite 4.937622077 11.643251860 2.419083378 1.196145040 0.012881407 0.803 0.774 0.774 0.938 61.99 1.51 0.02 9.00E-06 548.60 1293.64 5513 852.61 0.88 FWN17-141 29.7933 80.8301 1459 19B920_FWN17_141_Zr3 Kushma quartzite 1.884504202 1.655873914 0.901414513 1.267001439 0.015355793 0.768 0.734 0.734 0.926 52.04 1.66 0.02 3.57E-06 527.64 463.62 4351 636.59 0.79 FWN17-145 29.8192 80.8624 2041 19B921_FWN17_145_Zr1 Ranimata quartzite 1.758166791 0.557960508 0.325565052 1.490642689 0.019868647 0.762 0.728 0.728 0.925 50.73 1.96 0.03 3.43E-06 512.12 162.52 4421 550.31 0.79 FWN17-145 29.8192 80.8624 2041 19B922_FWN17_145_Zr2 Ranimata quartzite 1.558244685 0.883479257 0.581641110 1.785900179 0.022965507 0.750 0.714 0.714 0.920 47.95 2.40 0.03 2.67E-06 582.68 330.36 6359 660.32 0.70 FWN17-145 29.8192 80.8624 2041 19B923_FWN17_145_Zr3 Ranimata quartzite 1.225469803 0.863948287 0.723235151 4.878220988 0.060169326 0.759 0.724 0.724 0.923 49.97 6.48 0.08 3.47E-06 353.57 249.26 10847 412.14 0.79 FWN17-155 29.9021 80.9483 3132 19B930_FWN17_155_Zr1 Greater Himalaya augen gneiss 2.476134656 0.273500616 0.113312662 1.375623482 0.018901382 0.819 0.792 0.792 0.943 67.85 1.68 0.02 1.11E-05 223.78 24.72 1701 229.59 0.77 FWN17-155 29.9021 80.9483 3132 19B931_FWN17_155_Zr2 Greater Himalaya augen gneiss 0.461499119 0.038683001 0.085989154 2.397667047 0.033097003 0.719 0.680 0.680 0.910 42.29 3.34 0.05 2.35E-06 196.02 16.43 2582 199.88 0.77 FWN17-155 29.9021 80.9483 3132 19B932_FWN17_155_Zr3 Greater Himalaya augen gneiss 1.858808697 0.488553177 0.269632065 1.497233362 0.019650450 0.746 0.709 0.709 0.919 47.14 2.02 0.03 3.34E-06 556.27 146.20 4765 590.62 0.77 FWN17-158 29.8669 80.9116 2404 19B924_FWN17_158_Zr1 Ranimata biotite schist 1.507933335 0.826885485 0.562545452 2.530763048 0.032207811 0.813 0.785 0.785 0.941 65.42 3.13 0.04 7.40E-06 203.70 111.70 3138 229.95 0.75 FWN17-158 29.8669 80.9116 2404 19B925_FWN17_158_Zr2 Ranimata biotite schist 0.998226636 0.210713069 0.216549263 1.532094732 0.021091637 0.724 0.685 0.685 0.912 43.08 2.13 0.03 2.55E-06 391.94 82.73 3396 411.38 0.74 FWN17-158 29.8669 80.9116 2404 19B926_FWN17_158_Zr3 Ranimata biotite schist 1.273076948 0.348317376 0.280682203 1.777530129 0.024346951 0.775 0.742 0.742 0.929 53.71 2.30 0.03 3.92E-06 324.39 88.75 3307 345.24 0.73 FWN17-197 29.5177 80.8210 1927 19B927_FWN17_197_Zr1 Kushma quartzite 1.753913861 0.944885602 0.552669328 6.912723946 0.088317305 0.769 0.736 0.736 0.927 52.41 9.04 0.12 4.65E-06 377.57 203.41 15861 425.37 0.72 FWN17-197 29.5177 80.8210 1927 19B928_FWN17_197_Zr2 Kushma quartzite 3.985390222 1.037940882 0.267175210 7.308609182 0.096091022 0.790 0.760 0.760 0.934 58.04 9.28 0.12 5.39E-06 739.55 192.61 30924 784.82 0.75 FWN17-197 29.5177 80.8210 1927 19B929_FWN17_197_Zr3 Kushma quartzite 1.463485308 0.574806732 0.402928392 7.296590313 0.093849438 0.763 0.728 0.728 0.925 50.78 9.62 0.12 2.50E-06 585.49 229.96 25165 639.53 0.67