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Paleogeothermal and Paleohydrologic Conditions in Silicic Tuff from Yucca Mountain, Nevada

Published online by Cambridge University Press:  28 February 2024

David L. Bish  and
James L. Aronson
David L. Bish
Affiliation:
Earth and Environmental Sciences Division, Mail Stop D469, Los Alamos National Laboratory Los Alamos, New Mexico 87545
James L. Aronson
Affiliation:
Geology Department, Case Western Reserve University, Cleveland, Ohio 44106
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Abstract

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The clay mineralogy of tuffs from Yucca Mountain, Nevada, the potential site of the nation's first high-level radioactive waste repository, has been studied in order to understand the alteration history of the rocks and to predict potential future alterations. Bulk-rock samples and clay-mineral separates from three drill holes at Yucca Mountain (USW G-1, USW G-2, and USW GU-3/G-3) were studied using X-ray powder diffraction, and supporting temperature information was obtained using fluid inclusion data from calcite. Twelve K/Ar dates were obtained on illite/smectite (I/S) separated from the tuffs from the two northernmost drill holes, USW G-1 and G-2. The predominant clay minerals in the Yucca Mountain tuffs are interstratified I/S, with minor amounts of chlorite and interstratified chlorite/smectite. The I/S reactions observed as a function of depth are similar to those observed for pelitic rocks; I/S transforms from R = 0 interstratifications through R = 1 and R ≥ 3 interstratifications to illite in USW G-2 and to R ≥ 3 I/S in USW G-1. The R = 0 I/S clays in USW GU-3/G-3 have not significantly transformed. K/Ar dates for the I/S samples average 10.4 my. These data suggest that the rocks at depth in the northern portion of Yucca Mountain were altered 10.0-11 my ago, soon after creation of the Timber Mountain caldera to the north. Both I/S geothermometry and fluid inclusion data suggest that the rocks at depth in USW G-2 were subjected to postdepositional temperatures of at least 275°C, those in USW G-1 reached 200°C, and rocks from USW GU-3/G-3 probably did not exceed 100°C. These data suggest that no significant hydrothermal alteration has occurred since Timber Mountain time, ~ 10.7 my ago.

Estimates of the temperature of formation of illite/smectites yield probable stability limits for several minerals at Yucca Mountain. Clinoptilolite apparently became unstable at about 100°C, mordenite was not a major phase above 130°C, and analcime transformed to albite above 175°-200°C. It appears that cristobalite transformed to quartz at 90°-100°C in USW G-2 but must have reacted at considerably lower temperatures (and for longer times) in USW GU-3/G-3. The reactions with increasing depth appear coupled, and clinoptilolite and cristobalite disappear approximately simultaneously, supporting aqueous silica activity as a controlling variable in the clinoptilolite-to-analcime reaction. The reaction of clinoptilolite to analcime also coincides with the appearance of calcite, chlorite, and interstratified chlorite/smectite. Although the hydrothermal fluids may have been a source for some cations, breakdown of clinoptilolite (and mordenite) probably provided the source of some of the Ca for calcite, Mg for chlorite, K for the I/S found deeper in the section, and Na for analcime and albite.

Using the rocks in USW G-1, G-2, and GU/G-3 as natural analogs to repository-induced thermal alteration suggests that the bulk of the clinoptilolite- and mordenite-bearing rocks in Yucca Mountain will not react to less sorptive phases such as analcime over the required lifetime of the potential repository. The zeolites in zeolite interval I, directly underlying the proposed repository horizon, may transform at the predicted repository temperatures. However, the reaction of clinoptilolite to analcime in interval I may require the transformation of all of the abundant opal-CT and glass to quartz, an unlikely scenario considering the unsaturated nature of these rocks and the predicted temperatures of <100°C.

Keywords

Geothermal gradientsIllite/smectiteK/Ar datingX-ray powder diffractionYucca Mountain
Type
Research Article
Information
Clays and Clay Minerals , Volume 41 , Issue 2 , April 1993 , pp. 148 - 161
Copyright
Copyright © 1993, The Clay Minerals Society

References

Ahn, J. H. and Buseck, P. R., 1990 Layer-stacking sequences and structural disorder in mixed-layer illite/smectite: Image simulations and HRTEM imaging Amer. Mineral. 75 267 – 275.Google Scholar
Aronson, J. L. and Bish, D. L., 1987 Distribution, K/Ar dates, and origin of illite/smectite in tuffs from cores USW G-1 and G-2, Yucca Mountain, Nevada, a potential high-level radioactive waste repository Prog. Abstracts, 24th Annual Meeting, Clay Minerals Soc, Socorro, New Mexico 25.Google Scholar
Aronson, J. L. and Hower, J., 1976 Mechanism of burial metamorphism of argillaceous sediment: 2. Radiogenic argon evidence Geol. Soc. Amer. Bull. 87 738 – 744 10.1130/0016-7606(1976)87<738:MOBMOA>2.0.CO;2.2.0.CO;2>CrossRefGoogle Scholar
Aronson, J. L. and Lee, M., 1986 K/Ar systematics of bentonite and shale in a contact metamorphic zone, Cerrillos, New Mexico Clays & Clay Minerals 34 483 – 487 10.1346/CCMN.1986.0340415.CrossRefGoogle Scholar
Bish, D. L., 1984 Effects of exchangeable cation composition on the thermal expansion/contraction of clinoptilolite Clays & Clay Minerals 32 444 – 452 10.1346/CCMN.1984.0320602.CrossRefGoogle Scholar
Bish, D. L., Kallo, D. and Sherry, H. S., 1988 Effects of composition on the dehydration behavior of clinoptilolite and heulandite Occurrence, Properties and Utilization of Natural Zeolites 565 – 576.Google Scholar
Bish, D. L., (1988b) Smectite dehydration and stability: Applications to radioactive waste isolation at Yucca Mountain: Los Alamos Nat. Lab. Rept. LA–11023–MS, 31 pp.Google Scholar
Bish, D. L., and Semarge, R. E., (1982) Mineralogic variations in a silicic tuff sequence: Evidence for diagenetic and hydrothermal reactions: Prog. Abstracts, 19th Annual Meeting, Clay Minerals Soc, Hilo, Hawaii, 42.Google Scholar
Bish, D. L., and Chipera, S. J., (1989) Revised mineralogic summary of Yucca Mountain, Nevada: Los Alamos Nat. Lab. Rept. LA–11497–MS, 68 pp.Google Scholar
Bish, D. L., Caporuscio, F. A., Copp, J. F., Crowe, B. M., Purson, J. D., Smyth, J. R., and Warren, R. G., (1981) Preliminary stratigraphie and petrologic characterization of core samples from USW-G1, Yucca Mountain, Nevada: Los Alamos Nat. Lab. Rept. LA–8840–MS, 66 pp.Google Scholar
Bish, D. L., Ogard, A. E., Vaniman, D. T. and Benson, L., 1984 Mineralogy-petrology and groundwater geochemistry of Yucca Mountain tuffs Materials Research Society Symposium Proc. 26 283 – 291 10.1557/PROC-26-283.CrossRefGoogle Scholar
Blacic, J. D., Vaniman, D. T., Bish, D. L., Duffy, C. J., and Gooley, R. C., (1986) Effects of long-term exposure of tuffs to high-level nuclear waste repository conditions: Final report: Los Alamos Nat. Lab. Rept. LA–9330–MS, 33 pp.Google Scholar
Brindley, G. W. and Brown, G., 1980 Crystal Structures of Clay Minerals and their X-ray Identification London Mineralogical Society 10.1180/mono-5.CrossRefGoogle Scholar
Broxton, D. E., Bish, D. L. and Warren, R. G., 1986 Distribution and chemistry of diagenetic minerals at Yucca Mountain, Nye County, Nevada Clays & Clay Minerals 35 89 – 110 10.1346/CCMN.1987.0350202.CrossRefGoogle Scholar
Burst, J. F., 1959 Post-diagenetic clay mineral-environmental relationships in the Gulf Coast Eocene in clays and clay minerals Clays & Clay Minerals 6 327 – 341 10.1346/CCMN.1957.0060124.CrossRefGoogle Scholar
Buscheck, T. A. and Nitao, J. J., 1992 The impact of thermal loading on repository performance at Yucca Mountain High-Level Radioactive Waste Management , 1003 – 1017.Google Scholar
Byers, F. M. Jr., Carr, W. J., Orkild, P. P., Quinlivan, W. D., and Sargent, K. A., (1976) Volcanic suites and related cauldrons of Timber Mountain-Oasis Valley caldera complex, southern Nevada: U.S. Geol. Surv. Prof. Pap. 919, 70 pp.Google Scholar
Byers, F. M. Jr. Carr, W. J. and Orkild, P. P., 1989 Volcanic centers of southwestern Nevada: Evolution of understanding, 1960-1988 J. Geophys. Res. 94 5908 – 5924 10.1029/JB094iB05p05908.CrossRefGoogle Scholar
Bystrom-Brusewitz, A. M., 1975 Studies on the Li test to distinguish between beidellite and montmorillonite Proc. Int. Clay Conf., Mexico City, 1972, Applied Publishing Ltd., Willamette, Ill. 419 – 428.Google Scholar
Caporuscio, F., Vaniman, D., Bish, D., Broxton, D., Arney, B., Heiken, G., Byers, F., Gooley, R., and Semarge, E., (1982) Petrologic studies of drill cores USW-G2 and UE25b-1H, Yucca Mountain, Nevada: Los Alamos Nat. Lab. Kept. LA–9255–MS, 111 pp.Google Scholar
Christiansen, R. L., Lipman, P. W., Orkild, P. P. and Byers, F. M. Jr., 1965 Structure of the Timber Mountain caldera, southern Nevada, and its relation to basin-range structure U.S. Geol. Surv. Prof. Pap. 525B B43 – B48.Google Scholar
Christiansen, R. L., Lipman, P. W., Carr, W. J., Byers, F. M. Jr. Orkild, P. P. and Sargent, K. A., 1977 Timber Mountain-Oasis Valley caldera complex of southern Nevada Geol. Soc. Amer. Bull. 88 943 – 959 10.1130/0016-7606(1977)88<943:TMVCCO>2.0.CO;2.2.0.CO;2>CrossRefGoogle Scholar
Chung, F. H., 1974 Quantitative interpretation of X-ray diffraction patterns of mixtures. I. Matrix-flushing method for quantitative multicomponent analysis J. Appl. Crystallogr. 7 519 – 525 10.1107/S0021889874010375.CrossRefGoogle Scholar
Chung, F. H., 1974 Quantitative interpretation of X-ray diffraction patterns of mixtures. II. Adiabatic principle of X-ray diffraction analysis of mixtures J. Appl. Crystallogr. 7 526 – 531 10.1107/S0021889874010387.CrossRefGoogle Scholar
Duffy, C. J., (1983a) Hydrothermal stability studies: in Research and Development Related to the Nevada Nuclear Waste Storage Investigations July 1-September 30, 1982, Daniels, W. R., Erdal, B. R., and Vaniman, D. T., eds., Los Alamos Nat. Lab. Progress Rept. LA-9577-PR, 74 pp.Google Scholar
Duffy, C. J., Wolfsberg, K., Vaniman, D. T. and Ogard, A. E., 1983 Permeability, porosity, and hydrothermal reactions Research and Development Related to the Nevada Nuclear Waste Storage Investigations January 1-March 30, 1983 .Google Scholar
Duffy, C. J., Wolfsberg, K. and Vaniman, D. T., 1984 Hydrothermal geochemistry Research and Development Related to the Nevada Nuclear Waste Storage Investigations July 1-September 30, 1982 .CrossRefGoogle Scholar
Eberl, D. and Hower, J., 1976 Kinetics of illite formation Geol. Soc. Amer. Bull. 87 1326 – 1330 10.1130/0016-7606(1976)87<1326:KOIF>2.0.CO;2.2.0.CO;2>CrossRefGoogle Scholar
Elliott, W. C., 1988 Bentonite illitization in two contrasting cases: Denver basin and the southern Appalachian basin Cleveland, Ohio Case Western Reserve University.Google Scholar
Elliott, W. C. and Aronson, J. L., 1987 Alleghenian episode of K-bentonite illitization in the southern Appalachian basin Geology 15 735 – 739 10.1130/0091-7613(1987)15<735:AEOKII>2.0.CO;2.Google Scholar
Elliott, W. C., Aronson, J. L., Matisoff, G. and Gautier, D. L., 1991 Kinetics of the smectite to illite transformation in the Denver basin: Clay mineral, K-Ar data, and mathematical model results Amer. Assoc. Pet. Geol. Bull. 75 436 – 462.Google Scholar
Ernst, W. G. and Calvert, S. E., 1969 An experimental study of the recrystallization of porcelanite and its bearing on the origin of some bedded cherts Amer. J. of Sci. 267–A 114 – 133.Google Scholar
Eslinger, E. V. and Savin, S. M., 1973 Mineralogy and oxygen isotope geochemistry of the hydrothermally altered rocks of the Ohaki-Broadlands, New Zealand geothermal area Amer. J. of Sci. 273 240 – 267 10.2475/ajs.273.3.240.CrossRefGoogle Scholar
Forster, C. and Smith, L., 1990 Fluid flow in tectonic regimes Fluids in Tectonically Active Regimes of the Continental Crust 18 1 – 47.Google Scholar
Goldstein, R. H., 1986 Re-equilibration of fluid inclusions in low-temperature calcium-carbonate cement Geology 14 792 – 795 10.1130/0091-7613(1986)14<792:ROFIIL>2.0.CO;2.2.0.CO;2>CrossRefGoogle Scholar
Greene-Kelly, R., 1955 Dehydration of the montmorillonite minerals Mineral. Magazine 30 604 – 615 10.1180/minmag.1955.030.228.06.Google Scholar
Hay, R. L., Pexton, R. E., Teague, T. T. and Kyser, T. K., 1986 Spring-related carbonate rocks, Mg clays, and associated minerals in Pliocene deposits of the Amargosa Desert, Nevada and California Geol. Soc. of Amer. Bull. 97 1488 – 1503 10.1130/0016-7606(1986)97<1488:SCRMCA>2.0.CO;2.2.0.CO;2>CrossRefGoogle Scholar
Heiken, G. and Goff, E., 1983 Hot dry rock geothermal energy in the Jemez Volcanic Field, New Mexico J. Volc. and Geoth. Res. 15 223 – 246 10.1016/0377-0273(83)90101-4.CrossRefGoogle Scholar
Hoffman, J. and Hower, J., 1979 Clay mineral assemblages as low grade metamorphic geothermometers: Application to the thrust faulted Disturbed Belt of Montana, U.S.A. Soc. Econ. Paleont. & Mineral., Spec. Pub. 26 55 – 79.Google Scholar
Horton, D. G., 1985 Mixed-layer illite/smectite as a paleotemperature indicator in the Amethyst vein system, Creede district, Colorado, USA Contr. Mineral. Petrol. 91 171 – 179 10.1007/BF00377764.CrossRefGoogle Scholar
Howard, J. J., 1981 Lithium and potassium saturation of illite/smectite clays from interlaminated shales and sandstones Clays & Clay Minerals 29 136 – 142 10.1346/CCMN.1981.0290208.CrossRefGoogle Scholar
Hower, J. and Altaner, S. P., 1983 The petrologic significance of illite/smectite Prog. Abstracts, 20th Annual Meeting, Clay Minerals Soc, Buffalo, New York .Google Scholar
Hower, J., Eslinger, E. V., Hower, M. E. and Perry, E. A., 1976 Mechanism of burial metamorphism of argillaceous sediments: 1. Mineralogical and chemical evidence Geol. Soc. of Amer. Bull. 87 725 – 737 10.1130/0016-7606(1976)87<725:MOBMOA>2.0.CO;2.2.0.CO;2>CrossRefGoogle Scholar
Iijima, A., 1975 Effect of pore water to clinoptilolite-analcime-albite reaction series J. Fac. Sci., Univ. Tokyo, Sec. II 19 133 – 147.Google Scholar
Iijima, A., Sand, L. B. and Mumpton, F. A., 1978 Geological occurrences of zeolite in marine environments Natural Zeolites: Occurrence, Properties, Use New York Pergamon Press 175 – 198.Google Scholar
Iijima, A. and Rees, L. V. C., 1980 Geology of natural zeolites and zeolitic rocks Proc. 5th Int. Conf. Zeolites, Naples, 1980 103 – 118.Google Scholar
Inoue, A., 1985 Conversion of smectite to chlorite in acidic pyroclastic rocks in the Hokuroku Kuroko district, Northeast Japan Proc. Int. Clay Conf, Denver, Colorado 109.Google Scholar
Inoue, A., Minato, H. and Utada, M., 1978 Mineralogical properties and occurrence of illite/montmorillonite mixed layer minerals formed from Miocene volcanic glass in Waga-Omono district Clay Sci. 5 123 – 136.Google Scholar
Jackson, M. R., 1988 The Timber Mountain magmato-thermal event: An intense widespread culmination of magmatic and hydrothermal activity at the southwestern Nevada volcanic field .CrossRefGoogle Scholar
Kano, K., 1983 Ordering of opal-CT in diagenesis Geochem. J. 17 87 – 93 10.2343/geochemj.17.87.CrossRefGoogle Scholar
Kano, K. and Taguchi, K., 1982 Experimental study on the ordering of opal-CT Geochem. J. 16 33 – 41 10.2343/geochemj.16.33.CrossRefGoogle Scholar
Kerrisk, J. F., 1983 Reaction-path calculations of groundwater chemistry and mineral formation at Rainier Mesa, Nevada Los Alamos Nat. Lab. Rept. .CrossRefGoogle Scholar
Kistler, R. W., 1968 Potassium-argon ages of volcanic rocks in Nye and Esmeralda Counties, Nevada Geol. Soc. Amer. Mem. 110 252 – 262.Google Scholar
Knauss, K. G. and Beiriger, W. B., 1984 Report on static hydrothermal alteration studies of Topopah Spring Tuff wafers in J-13 water at 150°C Lawrence Livermore Nat. Lab. Kept. .CrossRefGoogle Scholar
Lee, M., Aronson, J. L. and Savin, S. M., 1989 Timing and conditions of Permian Rotliegende sandstone diagenesis, southern North Sea: K/Ar and oxygen isotope data Amer. Assoc. Petrol. Geol. Bull. 73 195 – 215.Google Scholar
Levy, S., 1991 Mineralogic alteration history and paleo-hydrology at Yucca Mountain, Nevada High-level Radioactive Waste Management 1 477 – 485.Google Scholar
Liou, J. G., 1971 Analcime equilibria Lithos 4 389 – 402 10.1016/0024-4937(71)90122-8.CrossRefGoogle Scholar
Maldonado, F., and Koether, S. L., (1983) Stratigraphy, structure, and some petrographic features of Tertiary volcanic rocks at the USW G-2 drill hole, Yucca Mountain, Nye County, Nevada: U.S. Geol. Surv. Open-File Report 83–732, 83 pp.Google Scholar
Marvin, R. F., Byers, F. M. Jr. Mehnert, H. H., Orkild, P. P. and Stern, T. W., 1970 Radiometric ages and stratigraphic sequence of volcanic and plutonic rocks, southern Nye and western Lincoln Counties, Nevada Geol. Soc. Amer. Bull. 81 2657 – 2676 10.1130/0016-7606(1970)81[2657:RAASSO]2.0.CO;2.CrossRefGoogle Scholar
McCubbin, D. G. and Patton, J. W., 1981 Burial diagenesis of illite/smectite: The kinetic model Ann. Meeting Amer. Assoc. Pet. Geol. 65 956.Google Scholar
Murata, K. J. and Larson, R. R., 1975 Diagenesis of Miocene siliceous shales, Temblor Range, California Jour. Res., U.S. Geol. Surv. 3 553 – 566.Google Scholar
Perry, E. A. and Hower, J., 1970 Burial diagenesis in Gulf Coast pelitic sediments Clays & Clay Minerals 18 165 – 177 10.1346/CCMN.1970.0180306.CrossRefGoogle Scholar
Perry, E. A. Jr. and Hower, J., 1972 Late-stage dehydration in deeply buried pelitic sediments Amer. Assoc. Pet. Geol. Bull. 56 2013 – 2021.Google Scholar
Reynolds, R. C. Jr., Brindley, G. W. and Brown, G., 1980 Interstratified clay minerals Crystal Structures of Clay Minerals and Their X-Ray Identification London Mineralogical Society 249 – 304.CrossRefGoogle Scholar
Robbins, G. A., 1972 Radiogenic argon diffusion in mus-covite under hydrothermal conditions .Google Scholar
Roberson, H. E. and Lahann, R. W., 1981 Smectite to illite conversion rates: Effects of solution chemistry Clays & Clay Minerals 29 129 – 135 10.1346/CCMN.1981.0290207.CrossRefGoogle Scholar
Roedder, E., 1984 Fluid Inclusions 10.1515/9781501508271.CrossRefGoogle Scholar
Sass, J., Lachenbruch, A., Grubb, F. and Moses, T., 1983 Status of thermal observations at Yucca Mountain, Nevada U.S. Geol. Survey Letter Rept .Google Scholar
Sawyer, D. A., Fleck, R. J., Lanphere, M. A., Warren, R. G. and Broxton, D. E., 1990 Episodic volcanism in the Southwest Nevada Volcanic Field: New 40Ar/39Ar geochronologic results Amer. Geophys. Union Trans. 71 1296.Google Scholar
Smyth, J. R., 1982 Zeolite stability constraints on radioactive waste isolation in zeolite-bearing volcanic rocks J. Geol. 90 195 – 201 10.1086/628664.CrossRefGoogle Scholar
Środoń, J., 1980 Precise identification of illite/smectite interstratifications by X-ray powder diffraction Clays & Clay Minerals 28 401 – 411 10.1346/CCMN.1980.0280601.CrossRefGoogle Scholar
Steiger, R. H. and Jager, E., 1977 Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology Earth Planet. Sci. Lett. 36 359 – 362 10.1016/0012-821X(77)90060-7.CrossRefGoogle Scholar
Steiner, A., 1968 Clay minerals in hydrothermally altered rocks at Wairakei, New Zealand Clays & Clay Minerals 16 193 – 213 10.1346/CCMN.1968.0160302.CrossRefGoogle Scholar
Swanberg, C. A. and Combs, J., 1986 Geothermal drilling in the Cascade Range: Preliminary results from a 1387-m core hole, Newberry Volcano, Oregon Amer. Geophys. Union Trans. 67 578 – 580 10.1029/EO067i029p00578.CrossRefGoogle Scholar
Vaniman, D., Bish, D., Broxton, D., Byers, F., Heiken, G., Carlos, B., Semarge, E., Caporuscio, F. and Gooley, R., 1984 Variations in authigenic mineralogy and sorptive zeolite abundance at Yucca Mountain, Nevada, based on studies of drill cores USW GU-3 and G-3 Los Alamos Nat. Lab. Rept. .Google Scholar
Veblen, D. R., Guthrie, G. D. Jr. and Livi, K. J. T., 1990 High-resolution transmission electron microscopy and electron diffraction of mixed-layer illite/smectite: Experimental results Amer. Mineral. 38 1 – 13.Google Scholar
WoldeGabriel, G. and Goff, F., 1989 Temporal relations of volcanism and hydrothermal systems in two areas of the Jemez volcanic field, New Mexico Geology 17 986 – 989 10.1130/0091-7613(1989)017<0986:TROVAH>2.3.CO;2.2.3.CO;2>CrossRefGoogle Scholar
Zen, E.-A., 1961 The zeolite facies: An interpretation Amer. J. Sci. 259 401 – 409 10.2475/ajs.259.6.401.CrossRefGoogle Scholar