Date File Created Name of Creator 7/1/2009 Will Frazier (Updated 2/2/2011 by Josh Rosera: Changed dating technique to Reg-Cor.) GeoRef Data 2009-036188 DN GeoRef TI "Growth of complex sheeted zones during recycling of older magmaticunits into younger; Sawmill Canyon area, Tuolumne Batholith, SierraNevada, California" AU "Paterson, Scott R; Zak, Jiri; Janousek, Vojtech" AF "University of Southern California, Department of Earth Sciences, LosAngeles, CA, United States (USA)" AF "Charles University, Czech Republic (CZE); Czech Geological Survey,Czech Republic (CZE)" SO "Journal of Volcanology and Geothermal Research, vol. 177, no. 2,pp.457-484, 25 Oct 2008" IS 0377-0273 CD JVGRDQ PB "Elsevier, Amsterdam, Netherlands (NLD)" DE atomic emission spectra; batholiths; California; Cathedral Peak;Cretaceous; crystal fractionation; deformation; fabric; foliation;granodiorites; Half Dome; ICP mass spectra; igneous rocks; intrusions;layered materials; magma chambers; magma chamgers; magmas; majorelements; mass spectra; Mesozoic; plutonic rocks; plutons; recycling;Sawmill Canyon; Sierra Nevada; spectra; stoping; trace elements;Tuolumne Intrusive Suite; United States; Upper Cretaceous AB "In Sawmill Canyon, located near the eastern margin of the Tuolumnebatholith, central Sierra Nevada, California, a series ofpetrologically and structurally complex, magmatic sheeted zonesintrude older granodioritic units (Kuna Crest and equigranular HalfDome) and in one case truncate these units along a sharp contact.These sheeted zones (a) consist of numerous batches of (now frozen)magma, (b) display clear outward growth directions, (c) were activelydeforming during and after emplacement resulting in magmatic folds,faults and multiple magmatic mineral fabrics, and (d) are the locationof numerous, but localized magma flow structures (schlieren-boundedtubes, troughs, megacryst-rich pipes) and instabilities (load casts,flame structures, slumps, diapirs, ridge and pillar structures).Geochemical data indicate that the sheeted zones largely consist ofmagmas derived from the Half Dome granodiorite with some lateCathedral Peak granodiorite pulses, and with fractionation and flowsorting forming widespread layering in the above structures. Weinterpret these sheeted zones to record the pulsing of magma duringpropagation and expansion of opening-mode (Mode I), submagmaticfractures at the margins of large blocks of older, fairly solidifiedmagmatic pulses that were subsequently removed from the presentcrustal level. Elsewhere in the Tuolumne batholith we see similarfeatures suggesting that a ""recycling"" process, i.e., the breaking offof older parts of the magma chamber and incorporation into youngerintrusive units, occurred in this batholith. This recycling removed asignificant portion of older units and resulted in the formation ofsheeted zones and local instabilities in this batholith. Finally thisrecycling is one process responsible for transfer of zircon crystalsbetween units and for obscuring whole-rock geochemical signatures." LA English FE "References: 128; illus. incl. 5 tables, geol. sketch maps" PY 2008 PT Serial; Analytic CP Netherlands (NLD) LL "Latitude:N375500,N375500 Longitude:W1191500,W1191500" CL "05A, Igneous and metamorphic petrology" CY "GeoRef, Copyright 2008, American Geological Institute. Referenceincludes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam,Netherlands" UD 200909 DO 10.1016/j.jvolgeores.2008.06.024 AN 2009-036188 JV 177 JI 2 JP 457-484 Sample Data Item LatDD LongDD Loc_prec Max_age Min_age SiO2 TiO2 Al2O3 FeOT MnO MgO CaO Na2O K2O P2O5 LOI SiO2 TiO2 Al2O3 FeOT MnO MgO CaO Na2O K2O P2O5 Rb Cs Ba Sr Zr Hf Nb Ta Ga Th U Pb Zn Cu Ni Sc V La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Y Rb Cs Ba Sr Zr Hf Nb Ta Th U Pb Zn Cu Cr Ni Sc V La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Y Rock_Type Rock_Class Sample_Comment Sample_Description Collected_by Material State Units DD DD Ma Ma wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm Method 1 1 2 2 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Sample Name SM-3 37.95620733 -119.2941254 0.0001 95 85 62.64 0.66 17.09 4.34 0.08 2.25 5.21 3.88 2.7 0.21 0.3 109 7.6 998 681 151 4.8 7 0.5 20.3 13.5 4.7 2.1 51 25.5 4.4 9 99 20.2 44.1 5.2 21.2 3.7 1.1 2.9 0.5 2.5 0.5 1.3 0.2 1.1 13 Plutonic Granodiorite Other descriptions: Kuna Crest Typical equigranular hornblende-biotite quartz monzodiorite of the Kuna Crest intrusion Paterson and others Whole Rock California Z-340 37.95739121 -119.2953345 0.0001 95 85 62.89 0.77 16.02 5.21 0.1 2.32 4.9 3.85 2.76 0.21 107 7.4 788 567 156 4.79 100 0.92 25 9.6 12.9 86 17 11 6 9.8 114 29.9 61 7.5 28.9 5.9 1.3 4.9 0.7 4.1 0.8 2 0.3 1.7 20.3 Plutonic Granodiorite Other descriptions: Kuna Crest """Autolith"" blocks are enclosed in Cathedral Peak granodiorite at the western end of the layered zone. The sample looks like foliated Kuna Crest." Paterson and others Whole Rock California T-353 37.95950594 -119.2941029 0.0001 95 85 64.06 0.72 16.63 4.11 0.07 1.48 4.03 4.3 3.27 0.24 106 7.3 1152 785 156 4.47 9.5 0.76 17.6 6.7 15.2 73 3 4 4 5.4 78 36.1 70.3 8.1 29.4 5.1 1.3 3.6 0.5 2.4 0.4 1.1 0.2 1 11.5 Plutonic Monzodiorite "Other descriptions: quartz monzodiorite, monzogabbro, porphyritic Half Dome" "Layered units with complex schlieren and troughs. Located in area where all three units (Kuna Crest, Half Dome, Cathedral Peak) occur. The schlieren also vary some with K-feldspar megacrysts, some without. Sample interpreted in field to be porphyritic Half Dome" Paterson and others Whole Rock California SM-4 37.95620733 -119.2941254 0.0001 95 85 64.42 0.57 16.98 3.39 0.07 1.7 4.53 3.88 3.15 0.16 0.6 100 4.3 1022 642 101 3.1 8.4 0.9 18.4 12.8 4.4 1.6 51 9.3 2.9 6 68 25 53.3 6.1 23.2 3.9 1 2.9 0.5 2.2 0.4 1.2 0.2 1.2 12.1 Plutonic Granodiorite "Other descriptions: quartz monzodiorite, monzogabbro, Half Dome" Equigranular Half Dome granodiorite Paterson and others Whole Rock California TS-310A 37.95841432 -119.2955484 0.0001 95 85 64.5 0.87 15.54 4.97 0.08 1.86 3.67 3.86 2.97 0.27 114 6.4 636 701 196 5.42 9.8 0.75 16.9 3.9 12.6 103 3 4 6 4.3 96 35.2 69.6 8.1 29.2 4.9 1.2 3.5 0.5 2.3 0.4 1.1 0.2 0.9 11.2 Plutonic Monzodiorite Other descriptions: Half Dome At contact where Kuna Crest is truncated by the layered zone. Material in the layered zone looks like Half Dome intruded by pulses of Cathedral Peak Paterson and others Whole Rock California T-395 37.96930098 -119.2964225 0.0001 95 85 67.66 0.48 15.13 3.27 0.07 1.31 3.2 3.74 3.53 0.15 153 8.1 810 471 107 3.55 7.8 0.68 28.4 8.7 17.8 58 3 4 4 5.1 60 27.1 47.5 5.3 18.4 3.3 0.8 2.6 0.4 2 0.4 0.9 0.1 0.9 10.2 Plutonic Granodiorite Other descriptions: equigranular Half Dome with enclaves Half Dome with enclaves in sea of Cathedral Peak dikes. Sample looks like equigranular Half Dome with subhedral hornblende. Paterson and others Whole Rock California SM-2 37.95848181 -119.2953229 0.0001 95 85 67.83 0.47 16.29 2.23 0.05 0.88 3.68 4.56 2.49 0.18 1 92 3.6 433 742 137 4.5 7.4 0.6 20.4 10.4 3.5 1.8 52 2.5 1.8 3 45 25.2 50.3 5.6 21.3 3.4 0.8 2.1 0.3 1.4 0.2 0.7 0.1 0.7 7.6 Plutonic Granodiorite Other descriptions: Cathedral Peak Hybrid Cathedral Peak granodiorite with large K-feldspar phenocrysts (up to 5 cm across) and large (up to 1 cm) euhedral hornblende crystals. Paterson and others Whole Rock California T-424 37.95710852 -119.2978066 0.0001 95 85 68.58 0.44 15.35 2.64 0.06 0.91 3.44 4.29 2.51 0.17 95 5.8 281 647 113 3.39 6.6 0.49 19.4 3.6 15.6 59 2 3 3 3.8 48 26.5 47.1 5.2 18.3 3.1 0.8 2.2 0.3 1.4 0.3 0.6 0.1 0.6 7.1 Plutonic Granodiorite Other descriptions: Cathedral Peak transition From the transitional CP unit where we find lots of K-feldspar megacrysts but also larger euhedral hornblendes. Sample looks like transitional CP. Paterson and others Whole Rock California SM-1 37.9576819 -119.3067016 0.0001 95 85 68.8 0.39 15.85 2.28 0.05 0.8 2.93 4.22 3.73 0.16 0.4 125 4 714 729 125 3.9 7.5 0.5 20.2 10.8 2.5 2.7 58 4.8 2.4 3 38 26.8 49.5 5.4 19.9 2.8 0.7 1.8 0.3 1.2 0.2 0.6 0.1 0.6 6.3 Plutonic Granodiorite Other descriptions: Cathedral Peak Typical weakly porphyritic Cathedral Peak granodiorite. Paterson and others Whole Rock California TS-429 37.95795993 -119.2925183 0.0001 95 85 56.77 1.71 14.16 10.43 0.19 3.14 5.06 3.37 3.28 0.56 160 18.4 684 546 457 12.62 24.7 2.01 28 8.5 12.5 174 8 9 6 15.2 223 86.3 185.6 22.3 81.2 14.1 3.1 9.8 1.3 6.6 1.1 2.9 0.4 2.5 31.3 Plutonic Granodiorite Other descriptions: schlieren From the layered zone with schlieren containing K-feldspar megacrysts Paterson and others Whole Rock California TS-310B 37.95841432 -119.2955484 0.0001 95 85 57.1 1.43 15.71 8.22 0.15 3.06 4.69 3.91 3.08 0.47 165 11.8 369 595 318 8.8 18.3 1.38 22.5 9.3 12.9 171 4 5 7 11.1 165 64.5 131.3 15.4 55.9 9.6 2.2 6.7 0.9 4.5 0.8 2.1 0.3 1.8 21.9 Plutonic Monzodiorite "Other descriptions: quartz monzodiorite, monzogabbro, and schlieren" Same as TS-310A. The sample is in layered zone with schlieren. Interpreted in the field to be hybrid Half Dome and now in part a cumulate Paterson and others Whole Rock California SM-5 37.95832116 -119.2920174 0.0001 95 85 62.43 1.25 14.94 5.82 0.13 2.31 4.17 3.64 3.29 0.35 0.9 120 5.2 445 591 267 7.7 20.3 1.6 22.3 26.5 5.9 1.5 100 5.8 3.1 9 125 59.5 135 16 63.1 9.9 2.3 6.5 0.9 4 0.7 2 0.3 1.8 23.1 Plutonic Granodiorite Other descriptions: schlieren (mafic) Mafic (melagranodiorite) portion from the layered sequence at the margin of the layered zone. Paterson and others Whole Rock California TS-430 37.95841677 -119.2917359 0.0001 95 85 70.36 0.37 14.65 2.55 0.04 0.8 2.52 3.74 3.18 0.13 83 2.1 348 508 100 3.21 6.8 0.54 21.9 5.3 15.5 39 2 3 3 4.3 42 26.6 46.1 5.2 18.1 3.1 0.8 2.2 0.3 1.5 0.3 0.7 0.1 0.7 7.6 Plutonic Granodiorite Other descriptions: schlieren "Layered unit near metavlcanic margin. The sample includes leucocratic layers and biotite-rich schlieren, neither with K-feldspar megacrysts." Paterson and others Whole Rock California Method Data 1 TABLE 2009-036188 2 REG_COR 2004-047843 3 ICPAE 563 4 ICPMS 299 5 ICPMS 563 Reference Data 2 Georef# 2004-047843 TI "Rethinking the emplacement and evolution of zoned plutons; geochronologic evidence for incremental assembly of the Tuolumne Intrusive Suite, California" AU "Coleman, Drew S; Gray, Walt; Glazner, Allen" AF "University of North Carolina, Department of Geological Sciences, Chapel Hill, NC, United States (USA)" PB "Geological Society of America (GSA), Boulder, CO, United States (USA)" DE absolute age; California; Cretaceous; dates; emplacement; igneous rocks; intrusions; magma chambers; magmas; Mesozoic; nesosilicates; orthosilicates; plutonic rocks; plutons; Sierra Nevada; silicates; Tuolumne County California; Tuolumne Suite; U/Pb; United States; Upper Cretaceous; zircon; zircon group; zoning LA English FE References: 33; illus. incl. geol. sketch map PY 2004 PT Serial; Analytic CP United States (USA) LL "Latitude:N373500,N381500 Longitude:W1190499,W1194500" CL 05A Igneous and metamorphic petrology; 03 Geochronology CY "GeoRef, Copyright 2007, American Geological Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States" UD 200413 AN 2004-047843