Spreadsheet: cfcbb6a9-8dce-41e1-a0a5-aaab7549d47b
Sheet: Sheet1

Table S2. Averages of electron microprobe analyses of glass in 16–14 [NAME] hotspot  fallout tuffs and corelative tephra | Unnamed: 1 | Unnamed: 2 | Unnamed: 3 | Unnamed: 4 | Unnamed: 5 | Unnamed: 6 | Unnamed: 7 | Unnamed: 8 | Unnamed: 9 | Unnamed: 10 | Unnamed: 11 | Unnamed: 12 | Unnamed: 13 | Unnamed: 14 | Unnamed: 15
 | (italics) (values in wt. %).
 |  |  |  |  |  |  |  |  |  |  |  |  |  | Oxide | Element
Sample | n | [NAME] | TiO2 | Al2O3 | Fe2O3 | MnO | MgO | CaO | BaO | Na2O | K2O | F | Cl | Total | Total
Dinner Creek Tuff
bns01-17 | 23 | 76.0678128 | 0.1407731347826087 | 11.86786734782608 | 2.195335430434776 | 0.0639424695652174 | 0.02717514347826089 | 0.5434371130434781 | 0.1466498478260875 | 3.621045443478267 | 4.130940017391308 | 0.0482173913043478 | 0.0731739130434783 | 98.8895688014612 | 101.30552173913
mas96-02 | 21 | 74.01632000000001 | 0.1427417 | 11.79497880952381 | 2.139103523809524 | 0.0684336 | 0.02123690952380953 | 0.5232341714285714 | 0.156629 | 3.770910714285714 | 4.36007838095238 | 0.1647142857142857 | 0.06876190476190476 | 97.14228524117226 | 99.92861904761905
buf94-623 | 24 | 73.7685293333333 | 0.1237174166666667 | 11.31164920833333 | 2.184819883333334 | 0.06595879999999996 | 0.0250757375 | 0.4753782 | 0.1372364583333337 | 2.8367117125 | 5.456034933333336 | 0.175333333333333 | 0.0668333333333333 | 96.53838426586066 | 100.306958333333
crln04-1290 | 20 | 73.18738 | 0.1217713 | 11.33794475 | 2.17099945 | 0.06088008000000001 | 0.02602903 | 0.50280252 | 0.134147475 | 2.85822195 | 5.0002946 | nd | 0.0705 | 95.46097115500002 | nd
cr9-240 whole rk | 20 | 77.43904000000002 | 0.150129 | 10.99689 | 2.015877 | 0.03873599999999999 | 0 | 0.335808 | 0.15631 | 4.259364000000001 | 3.73426 | nd | nd | 99.1264140000001 | nd
average |  | 74.26001053333333 | 0.1322508878623189 | 11.57811002892081 | 2.172564571894409 | 0.06480373739130435 | 0.0248792051255176 | 0.5112130011180124 | 0.1436656952898553 | 3.271722455065995 | 4.736836982919256 | 0.1294216701173222 | 0.06981728778467909 | 97.00780236587354 | 100.513699706694
std. dev. |  | 1.254275905638232 | 0.01103521219082491 | 0.2942063346058725 | 0.02443219189657898 | 0.003196192619383422 | 0.002575420508448908 | 0.02908476742686426 | 0.01014698708479314 | 0.4937720399177947 | 0.604349177454475 | 0.0705251176265262 | 0.002692634805627124 | 1.434360567105892 | 0.7113520591570138
Virgin Valley
har94-15 | 20 | 71.89637280000001 | 0.220773035 | 11.1310445 | 2.6106322 | 0.05726472 | 0.017159265 | 0.65860344 | 0.04946095 | 1.39035885 | 6.739736999999999 | 0.2116 | 0.0315 | 94.91830943014776 | 99.48265
vvy93-08 | 14 | 70.31223228235294 | 0.2303940470588235 | 11.06035497058824 | 2.701460200000001 | 0.05043275294117647 | 0.02574621176470588 | 0.645195811764706 | 0.08938567647058825 | 1.547468488235294 | 5.941441494117647 | 0.1561176470588236 | 0.0363529411764706 | 92.72265194737086 | 98.64088235294115
85cs-bb1 | 23 | 73.28899200000001 | 0.2585555 | 10.9591 | 2.730727 | 0.06068639999999999 | 0.0116053 | 0.6380352 | 0.118349 | 2.736237 | 5.155688 | 0.2 | 0.04 | 96.10474570795706 | 100.24
average |  | 71.83253236078433 | 0.2365741940196079 | 11.05016649019608 | 2.6809398 | 0.05612795764705882 | 0.01817025892156863 | 0.6472781505882353 | 0.08573187549019608 | 1.891354779411765 | 5.945622164705881 | 0.1892392156862746 | 0.03595098039215686 | 94.58190236182524 | 99.45451078431371
std. dev. |  | 1.489406360067999 | 0.01963477343163718 | 0.08642384867378092 | 0.06262192394744838 | 0.005220487619660478 | 0.007124459833305672 | 0.01044103564817128 | 0.03458906697793192 | 0.7358942414546995 | 0.7920327752720709 | 0.02926463277161014 | 0.004264232563321868 | 1.715959451170699 | 0.7999301056206946
[NAME] ash
mas96-01 | 90 | 72.17751121777776 | 0.18315738 | 12.52589439444444 | 2.670473087777778 | 0.06602335999999999 | 0.00591317666666667 | 0.8726344 | 0.1519680555555555 | 2.906222166666667 | 4.155789693333332 | 0.1078619634222222 | 0.05433333333333332 | 95.82011563198547 | 100.4001020423111
har02-51 | 13 | 72.09104 | 0.183491 | 12.28175 | 2.544866 | 0.06455999999999999 | 0 | 0.8954880000000001 | 0.212135 | 1.88706 | 5.78208 | 0.05 | 0.06 | 96.01788861983032 | 102.1
har94-01 | 20 | 71.63442776000001 | 0.179404155 | 12.100452475 | 2.55701845 | 0.06565752 | 0.008538185000000002 | 0.76039524 | 0.205268525 | 2.965380000000001 | 5.225554799999999 | 0.22 | 0.06 | 95.87593678246188 | 99.37865000000001
cpb00-33 | 22 | 70.85030400000001 | 0.183491 | 12.111695 | 2.516272 | 0.06455999999999999 | 0 | 0.8255279999999999 | 0.167475 | 1.415295 | 5.107504 | 0.14 | 0.06 | 93.36964788298822 | 99.81
cpb09-09,10 | 65 | 72.92532800000001 | 0.16681 | 12.640755 | 2.644945 | 0.06455999999999999 | 0.016579 | 0.8814960000000001 | 0.167475 | 3.059733 | 3.601754 | 0.08 | 0.05 | 96.2544768323147 | 100.51
suc93-22 | 21 | 69.54427146666666 | 0.1729263666666667 | 11.81288407142857 | 2.597969142857143 | 0.06099382857142858 | 0.003000009523809524 | 0.8459829714285714 | 0.182468 | 1.118757 | 6.360288 | 0.07 | 0.04 | 92.77104800720515 | 98.58
buf94-614 | 19 | 72.53877456000001 | 0.1668984093 | 12.02069668 | 2.635537574 | 0.06591911712 | 0.008551265831 | 0.8403301368 | 0.1526668605 | 2.556750636 | 5.033264502 | 0.112895 | 0.0512105 | 96.12441360504712 | 100.09
vvy95-64 | 21 | 71.02144000000001 | 0.16681 | 12.036115 | 2.659242 | 0.06455999999999999 | 0 | 0.8675039999999999 | 0.145145 | 1.914018 | 6.035045999999999 | 0.16 | 0.05 | 95.0412376217884 | 100.2
average |  | 71.59788712555556 | 0.1753735388708333 | 12.19128032760912 | 2.603290406829365 | 0.06460422821142857 | 0.005322704627684524 | 0.8486698435285716 | 0.1730751801319445 | 2.227901975333333 | 5.162660124416666 | 0.1175946204277778 | 0.05319297916666666 | 95.15934562295266 | 100.1335940052889
std. dev. |  | 1.091288661293512 | 0.00786588718541448 | 0.2759713044251521 | 0.05803213715576089 | 0.001598888076416448 | 0.005833453160279427 | 0.04243186518401358 | 0.02494317903412316 | 0.7473099843385664 | 0.9299007463294588 | 0.05496950602687665 | 0.006955800871601843 | 1.349011148410588 | 1.012357827815024
Bully Creek Fm.
cpb00-28 | 22 | 71.87712 | 0.133448 | 11.771585 | 2.030174 | 0.03873599999999999 | 0.033158 | 1.021416 | 0.145145 | 5.270289000000001 | 1.68644 | 0.14 | 0.04 | 94.1195444658518 | 100.2
har94-21 | 21 | 72.74274728000002 | 0.14195531 | 11.787929175 | 2.043112785 | 0.02847096 | 0.04625541000000002 | 1.04953992 | 0.1415722 | 4.688872335 | 2.734381770000001 | 0.17535 | 0.04175000000000001 | 95.53869181182492 | 99.48929999999999
average |  | 72.30993364000001 | 0.137701655 | 11.7797570875 | 2.0366433925 | 0.03360348 | 0.03970670500000001 | 1.03547796 | 0.1433586 | 4.979580667500001 | 2.210410885 | 0.157675 | 0.04087500000000001 | 94.82911813883837 | 99.84465
Clarkia, ID
clk96-01 | 28 | 71.38586800000002 | 0.186886775 | 12.70891196428572 | 3.031474607142858 | 0.06917142857142856 | 0.004677646428571429 | 1.235043857142857 | 0.12688225 | 3.88002642857143 | 3.567336857142857 | 0.2697142857142857 | 0.04335714285714287 | 95.77110785623928 | 100.6
har02-48 | 19 | 71.07964875789476 | 0.1898122210526316 | 12.45767239473684 | 3.035629336842105 | 0.06666669473684211 | 0.005759021052631579 | 1.196168715789474 | 0.1226974736842105 | 2.547034405263159 | 5.030599799999999 | nd | 0.05089473684210527 | 96.3860112016606 | 95.5
average |  | 71.23275837894738 | 0.1883494980263158 | 12.58329217951128 | 3.033551971992482 | 0.06791906165413533 | 0.005218333740601504 | 1.215606286466165 | 0.1247898618421053 | 3.213530416917294 | 4.298968328571428 | 0.2697142857142857 | 0.04712593984962407 | 96.07855952894994 | 98.05
[NAME].
cpb00-29 | 20 | 70.82185264000003 | 0.252800555 | 11.762609875 | 2.383166929999999 | 0.04157664000000001 | 0.0862108 | 0.6550354800000001 | 0.049740075 | 1.54631088 | 6.4578606 | 0.15605 | 0.04195000000000002 | 94.18000036178576 | 100.1243
cpb00-30 | 20 | 71.32092800000001 | 0.233534 | 11.733795 | 2.316114 | 0.03873599999999999 | 0.066316 | 0.643632 | 0.04466000000000001 | 1.684875 | 6.179597999999999 | 0.17 | 0.04 | 94.39158988690443 | 100.16
har94-22b | 21 | 71.19970666666669 | 0.2629243333333333 | 11.6786395952381 | 2.488154566666667 | 0.04802034285714287 | 0.08447395238095239 | 0.699733257142857 | 0.03594066666666667 | 2.690472585714286 | 5.918773419047619 | 0.2707142857142857 | 0.04242857142857145 | 95.29643052251912 | 99.95928571428573
tco93-40 | 15 | 71.00903264 | 0.2628925599999999 | 11.5913267 | 2.323167186666667 | 0.04760224 | 0.07316865333333333 | 0.65165408 | 0.0721259 | 2.37985224 | 6.000192906666665 | 0.1824666666666667 | 0.03946666666666668 | 94.54722145964044 | 99.73
vvy95-83 | 21 | 72.04611680000002 | 0.233534 | 11.61781569047619 | 2.277852504761905 | 0.04371634285714286 | 0.07018443333333335 | 0.6258421714285713 | 0.03312283333333334 | 1.725312 | 6.468702 | 0.21 | 0.04 | 95.29475855783176 | 100.2800952380952
htc93-439 | 19 | 71.23536 | 0.250215 | 11.620425 | 2.387599 | 0.051648 | 0.066316 | 0.657624 | 0.96019 | 1.994892 | 6.842127999999999 | 0.22 | 0.05 | 96.23249146389367 | 100.9
buf94-617 | 19 | 72.30881056000001 | 0.2524102196 | 11.77664886 | 2.518831163 | 0.04376483664 | 0.08751971205 | 0.6901008312 | 0.03954765815 | 2.464311654 | 6.229492532 | 0.216211 | 0.0454211 | 96.57179240540341 | 100.5852144
average |  | 71.42025818666669 | 0.249758666847619 | 11.68303724581633 | 2.384983621585034 | 0.04500920033632653 | 0.07631279301394558 | 0.6605174028244898 | 0.1764753047357143 | 2.069432337102041 | 6.29953535110204 | 0.2036345646258503 | 0.04275233401360545 | 95.21632637971122 | 100.2484136217687
std. dev. |  | 0.5478924424469216 | 0.01217104218668153 | 0.07558173874106124 | 0.0900101118574002 | 0.004363101521946458 | 0.009464708541240896 | 0.02587641369575668 | 0.3458284041772004 | 0.4441277320185071 | 0.3167458325996746 | 0.03831852594312377 | 0.003793543444260958 | 0.920535278831149 | 0.3904211587227502
Bully Creek Tuff
har02-72 | 21 | 71.78877770345865 | 0.2472462637761069 | 12.61178095283447 | 2.939474666265664 | 0.127581870905836 | 0.07049025147869677 | 0.5395030984890798 | 0.05008180075187971 | 3.179571685886144 | 5.385859644172335 | 0.1520276166606993 | 0.05649958228905598 | 97.07214403149645 | 102.0331301825993
suc95-854 | 20 | 71.03748400000002 | 0.24787966 | 12.4801475 | 2.9852136 | 0.12640848 | 0.070875225 | 0.51567516 | 0.065036125 | 1.58580435 | 4.363663499999999 | 0.15965 | 0.0615 | 93.61824958006291 | 99.7382
average |  | 71.41313085172933 | 0.2475629618880535 | 12.54596422641723 | 2.962344133132832 | 0.126995175452918 | 0.07068273823934838 | 0.5275891292445399 | 0.05755896287593985 | 2.382688017943072 | 4.874761572086167 | 0.1558388083303497 | 0.05899979114452799 | 95.34519680577968 | 100.8856650912997
Obliterator Ash
for02-21 | 16 | 73.0414739764706 | 0.1791735647058823 | 11.48693738235294 | 1.8892224 | 0.03531811764705883 | 0.03793665294117647 | 0.559597694117647 | nd | 1.137865464705882 | 6.858496388235293 | nd | 0.06329411764705883 | 95.27504425540819 | 95.08805882352942
suc92-06a | 22 | 72.10562545454546 | 0.1713593636363636 | 11.29663340909091 | 1.900201272727273 | 0.03462763636363637 | 0.0324044090909091 | 0.5768519999999999 | 0.023345 | 1.790256272727273 | 5.32542709090909 | 0.05954545454545455 | 0.07 | 93.34542205327891 | 99.01
htc93-444 | 25 | 74.31580800000002 | 0.183491 | 11.658215 | 1.930095 | 0.0400272 | 0.0381317 | 0.5750712 | 0.002233 | 1.657917 | 6.830081999999999 | 0.257 | 0.072 | 97.43562607537532 | 101.406
sv93-269 | 20 | 71.49837464000001 | 0.160554625 | 11.255657025 | 1.881985595 | 0.03667008 | 0.03539616500000001 | 0.55282392 | 0.023837275 | 1.88706 | 6.26392 | 0.25 | 0.07 | 93.79523262708273 | 99.3
average |  | 72.74032051775401 | 0.1736446383355615 | 11.42436070411096 | 1.900376066931818 | 0.0366607585026738 | 0.03596723175802139 | 0.5660862035294117 | 0.01647175833333334 | 1.618274684358289 | 6.319481369786095 | 0.1888484848484848 | 0.06882352941176471 | 94.96283125278629 | 98.70101470588236
std. dev. |  | 1.227208430944297 | 0.01006794905316412 | 0.1856330301107289 | 0.02118064587955974 | 0.002399255811332819 | 0.002682248134594069 | 0.01175615376478318 | 0.01233358272462663 | 0.3337602653397609 | 0.7170497818270859 | 0.1120343930860509 | 0.003804932147952049 | 1.843139555489064 | 2.634682203718416
White Bird
cpb00-27 | 22 | 71.599024 | 0.283577 | 11.75269 | 1.830016 | 0.025824 | 0.116053 | 0.62964 | 0.04466000000000001 | 1.186152 | 7.010771999999999 | 0.11 | 0.05 | 94.58081825336734 | 100.38
htc93-447 | 20 | 71.02496968 | 0.27823908 | 11.56317315 | 1.899999815 | 0.0287292 | 0.10991877 | 0.65020824 | 0.09216707499999999 | 2.039844465 | 6.994871280000001 | 0.2036 | 0.04735000000000002 | 94.83666800178098 | 99.07
average |  | 71.31199684 | 0.28090804 | 11.657931575 | 1.8650079075 | 0.0272766 | 0.112985885 | 0.63992412 | 0.0684135375 | 1.6129982325 | 7.002821640000001 | 0.1568 | 0.04867500000000001 | 94.70874312757417 | 99.725
Note: n = number of shards analyzed; nd = not determined; oxide total corrected for O = F, Cl.
Element total includes direct determination of oxygen.