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Origin and Diagenesis of Clay Minerals in the Monterey Formation, Santa Maria Basin Area, California

Published online by Cambridge University Press:  02 April 2024

John S. Compton
John S. Compton*
Affiliation:
Department of Marine Science, University of South Florida, St. Petersburg, Florida 33701
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Abstract

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The clay mineralogy of the Miocene Monterey Formation was determined for onshore and offshore sequences in the Santa Maria basin area, California. The <0.1-μm fraction of clayey, opal-CT porcelanites, siliceous mudstones, and dolostones from the Pt. Pedernales area consists of mixed-layered illite/smectite (I/S) that contains < 10% illite layers. The underlying Tranquillon Volcanics and Obispo Tuff, the presence of bentonite beds, zeolite minerals, and unaltered volcanic ash beds in the Monterey Formation, and the highly smectitic composition of the I/S suggest that a significant amount of the I/S formed from the alteration of vitreous volcanic ash. The alteration of volcanic glass to smectite coincides with the transformation of biogenic opal-A (mostly diatoms) to opal-CT. Alteration of volcanic glass to smectite may inhibit the opal-A to opal-CT transformation by removing pore-water Mg, promote dolomite precipitation by raising the pH, alter the Sr isotopic composition of the pore waters, and provide an additional source of silica to these predominantly biogenic siliceous rocks. The 0.1- to 2-μm fraction contains mica minerals (discrete illite, biotite, and muscovite) as well as I/S. Clayey, opal-A diatomites from the overlying Sisquoc Formation contain detrital kaolinite and random (R = 0) I/S, but the percent illite layers in the I/S is uncertain.

The <0.1-μn fraction of quartz rocks from the Lions Head area and the offshore B-2 well is far more variable, and contains random or ordered (R = 1) I/S, kaolinite, and chlorite. Corrensite was observed at the base of the Lions Head area. The percent illite layers in the I/S increases from 10% to 80% over a stratigraphic depth of 0.8 km that corresponds to a present-day temperature range of 80 to 115°C. Initial illitization of smectite coincides with the opal-CT to quartz transformation. Ordered (R = 1) I/S is associated with abundant diagenetic kaolinite and dolomite in several metabentonite beds. The dominance of sodic plagioclase over K-feldspar, and the absence of kaolinite and chlorite in rocks of equivalent age that have not undergone illitization suggest that limited availability of K results in the alteration of smectite to kaolinite, chlorite, and possibly late dolomite. Minor amounts of clinoptilolite were found in opal-A and opal-CT rocks. Minor to trace amounts of analcime and mordenite were tentatively identified, primarily in quartz rocks.

Keywords

BentoniteDiagenesisIllite/SmectiteIllitizationKaoliniteZeolite
Type
Research Article
Information
Clays and Clay Minerals , Volume 39 , Issue 5 , October 1991 , pp. 449 - 466
Copyright
Copyright © 1991, The Clay Minerals Society

References

Berner, R. A., 1982 Burial of organic carbon and pyrite sulfur in the modern ocean: Its geochemical and environmental significance Amer. J. Sci. 282 451 – 473.CrossRefGoogle Scholar
Bohor, B. F., Pollastro, R. M. and Phillips, R. E., 1978 Mineralogical evidence for the volcanic origin of kaolinitic partings (tonstein) in Upper Cretaceous and Tertiary coals of the Rocky Mountain Region 15th Ann. Mtg. Bloomington, Indiana Clay Minerals Society 47.Google Scholar
Boles, J. R. and Franks, S. G., 1979 Clay diagenesis in Wilcox sandstones of southwest Texas: Implications of smectite diagenesis on sandstone cementation J. Sed. Petrol. 49 55 – 70.Google Scholar
Bramlette, M. N. (1946) The Monterey Formation of California and the origin of its siliceous rocks: U.S. Geol. Surv. Prof. Paper 212, 57 pp.Google Scholar
Bremner, J. M. and Black, C. A., 1965 Inorganic forms of nitrogen Methods of Soil Analyses 1179 – 1237.CrossRefGoogle Scholar
Burst, J. F. Jr., 1969 Diagenesis of Gulf Coast clayey sediments and its possible relation to petroleum migration Amer. Assoc. Petrol. Geol. Bull. 53 73 – 93.Google Scholar
Burton, J. H., Krinsley, D. H. and Pye, K., 1987 Authi-genesis of kaolinite and chlorite in Texas Gulf coast sediments Clays & Clay Minerals 35 291 – 296.CrossRefGoogle Scholar
Compton, J. S., 1986 Early diagenesis and dolomitization of the Monterey Formation, California .Google Scholar
Compton, J. S., 1988 Sediment composition and precipitation of dolomite and pyrite in the Neogene Monterey and Sisquoc formations, Santa Maria basin area, California Sedimentology and Geochemistry of Dolostones 43 53 – 64.CrossRefGoogle Scholar
Compton, J. S., 1991 Porosity reduction and burial history of siliceous rocks from the Monterey and Sisquoc formations, Pt. Pedernales area, California Geol. Soc. Amer. Bull. 103 625 – 636.2.3.CO;2>CrossRefGoogle Scholar
Compton, J. S. and Siever, R., 1986 Diffusion and mass balance of Mg during early dolomite formation, Monterey Formation Geochim. Cosmochim. Acta 50 125 – 135.CrossRefGoogle Scholar
Compton, J. S., Williams, L. B. and Ferrell, R. E. Jr., 1991 Mineralization of organogenic ammonium in the Monterey Formation, California Geochim. Cosmochim. Acta .Google Scholar
Cook, H. E., 1979 Geologic Studies of the Point Conception Deep Stratigraphic Test Well OCS-CAL 78–164 No. 1, Outer Continental Shelf, Southern California, United States .CrossRefGoogle Scholar
Crain, W. E., Mero, W. E. and Patterson, D., 1985 Geology of the Point Arguello discovery Amer. Assoc. Petrol. Geol. Bull. 69 537 – 545.Google Scholar
de Dunoyer Segonzac, G., 1970 The transformation of clay minerals during diagenesis and low-grade metamorphism: A review Sedimentology 15 281 – 346.CrossRefGoogle Scholar
Dunham, J. B. and Blake, G. H. (1987) Guide to the Coastal Outcrops of the Monterey Formation of Western Santa Barbara County, California: Pacific Section SEPM 53, 36 pp.Google Scholar
Eberl, D. and Hower, J., 1976 Kinetics of illite formation Geol. Soc. Amer. Bull. 87 1326 – 1330.2.0.CO;2>CrossRefGoogle Scholar
Elderfield, H. and Gieskes, J. M., 1982 Sr isotopes in interstitial waters of marine sediments from Deep-Sea Drilling Project cores Nature 300 493 – 497.CrossRefGoogle Scholar
Friedman, I. and Murata, K. J., 1979 Origin of dolomite in Miocene Monterey shale and related formations in the Tremblor Range, California Geochim. Cosmochim. Acta 42 1357 – 1365.CrossRefGoogle Scholar
Garrels, R. M., 1984 Montmorillonite/illite stability diagrams Clays & Clay Minerals 32 161 – 166.CrossRefGoogle Scholar
Gorsline, D. S. and Emery, K. O., 1959 Turbidity-current deposits in San Pedro and Santa Monica Basins of southern California Geol. Soc. Amer. Bull. 70 279 – 290.CrossRefGoogle Scholar
Grivetti, M. C., 1982 Aspects of stratigraphy, diagenesis, and deformation in the Monterey Formation near Santa Maria-Lompoc, California .Google Scholar
Hall, C. A. Jr., 1981 San Luis Obispo transform fault and Middle Miocene rotation of the western transverse ranges, California J. Geophys. Res. 86 B2 1015 – 1031.CrossRefGoogle Scholar
Haq, B. Q., Hardenbol, J. and Vail, P. R., 1987 Chronology of fluctuating sea levels since the Triassic Science 235 1156 – 1167.CrossRefGoogle ScholarPubMed
Hay, R. L., 1963 Stratigraphy and zeolitic diagenesis of the John Day Formation of Oregon Univ. of Calif. Publ. in Geol. Sci. 42 199 – 262.Google Scholar
Hein, J. R., Scholl, D. W., Barron, J. A., Jones, M. G. and Miller, J., 1978 Diagenesis of late Cenozoic diatomaceous deposits and formation of the bottom simulating reflector in the southern Bering Sea Sedimentology 25 155 – 181.CrossRefGoogle Scholar
Hein, J. R., Vanek, E., Allen, M. A. and Cook, H. E., 1979 X-ray mineralogy and diagenesis Geologic Studies of the Point Conception Deep Stratigraphic Test Well OCS-CAL 78–164 No. 1, Outer Continental Shelf, Southern California, United States 79 – 96.Google 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. Aspects of Diagenesis 26 55 – 79.CrossRefGoogle Scholar
Hower, J., Eslinger, E. V., Hower, M. and Perry, E. A., 1976 The mechanism of burial metamorphism of argillaceous sediments: 1. Mineralogical and chemical evidence Geol. Soc. Amer. Bull. 87 725 – 737.2.0.CO;2>CrossRefGoogle 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
Ingle, J. C. Jr., Garrison, R. E. and Douglas, R. G., 1981 Origin of Neogene diatomites around the north Pacific Rim The Monterey Formation and Related Siliceous Rocks of California 159 – 180.Google Scholar
Isaacs, C. M., 1980 Diagenesis in the Monterey Formation examined laterally along the coast near Santa Barbara, California .CrossRefGoogle Scholar
Isaacs, C. M., 1982 Influence of rock composition on kinetics of silica phase changes in the Monterey Formation, Santa Barbara area, California Geology 10 304 – 308.2.0.CO;2>CrossRefGoogle Scholar
Isaacs, C. M., Keller, M. A., Gennai, V. A., Stewart, K. C., Taggart, J. E. Jr., Isaacs, C. M. and Garrison, R. E., 1983 Preliminary evaluation of Miocene lithostratigraphy in the Point Conception COST well OCS-CAL 78–164 No. 1, off southern California Petroleum Generation and Occurrence in the Miocene Monterey Formation, California 99 – 111.Google Scholar
Jadgozinski, H., 1949 Eindimensionale Fehlordnung in Kristallen und ihr Einfluss auf die Rontgeninterferenzen. I. Berechnung des Fehlordnungsgrades aus der Rontgeninten-sitaten Acta Crystallogr. 2 201 – 207.CrossRefGoogle Scholar
Johns, W. D. and Shimoyama, A., 1972 Clay minerals and petroleum-forming reactions during burial and diagenesis Amer. Assoc. Petrol. Geol. Bull. 56 2160 – 2167.Google Scholar
Kablanow, R. I. II Surdam, R. C., Isaacs, C. M. and Garrison, R. E., 1983 Diagenesis and hydrocarbon generation in the Monterey Formation, Huasna Basin, California Petroleum Generation and Occurrence in the Miocene Monterey Formation, California 53 – 68.CrossRefGoogle Scholar
Kastner, M., Keene, J. B. and Gieskes, J. M., 1977 Diagenesis of siliceous oozes—I. Chemical controls on the rate of opal-A to opal-CT transformation—an experimental study Geochim. Cosmochim. Acta 41 1041 – 1059.CrossRefGoogle Scholar
Kastner, M., Mertz, K., Hollander, D. and Garrison, R., 1984 The association of dolomitite-phosphorite-chert: Causes and possible diagenetic sequences Dolomites of the Monterey Formation and Other Organic-Rich Units 41 75 – 86.Google Scholar
Keller, W. D., Reynolds, R. C. Jr. and Inoue, A., 1986 Morphology of clay minerals in the smectite-to-illite conversion series by scanning electron microscopy Clays & Clay Minerals 34 187 – 197.CrossRefGoogle Scholar
Kennett, J. P., McBirney, A. R. and Thunell, R. C., 1977 Episodes of Cenozoic volcanism in the circum-Pacific region Jour. of Volcanology and Geothermal Res. 2 145 – 163.CrossRefGoogle Scholar
McHargue, T. R. and Price, R. C., 1982 Dolomite from clay in argillaceous or shale-hosted marine carbonates J. Sediment. Petrol. 52 873 – 886.Google Scholar
Mizutani, S., 1977 Progressive ordering of cristobalitic silica in early stage of diagenesis Contrib. to Mineral, and Petrol. 61 129 – 140.CrossRefGoogle Scholar
Moore, D. M. and Reynolds, R. C. Jr., 1989 X-Ray Diffraction and the Identification and Analysis of Clay Minerals New York Oxford University Press.Google Scholar
Murata, K. J. and Larson, R. R., 1975 Diagenesis of Miocene siliceous shale, Temblor Range, California Jour, of Research, U.S. Geol. Surv. 3 553 – 566.Google Scholar
Newman, A. C. D. Brown, G. and Newman, A. C. D., 1987 The chemical constitution of clays Chemistry of Clays and Clay Minerals 1 – 128.Google Scholar
Orr, W. L., 1984 Sulfur and sulfur isotope ratios in Monterey oils of the Santa Maria River basin and Santa Barbara Channel areas 62.Google Scholar
Perry, E. and Hower, J., 1970 Burial diagenesis in Gulf Coast pelitic sediments Clays & Clay Minerals 18 165 – 177.CrossRefGoogle Scholar
Pisciotto, K. A., 1978 Basinal sedimentary facies and dia-genetic aspects of the Monterey shale, California .Google Scholar
Pollastro, R. M., 1981 Authigenic kaolinite and associated pyrite in chalk of the Cretaceous Niobrara Formation, eastern Colorado J. Sed. Petrol. 51 553 – 562.Google Scholar
Pollastro, R. M., 1985 Mineralogical and morphological evidence for the formation of illite at the expense of illite/smectite Clays & Clay Minerals 33 265 – 274.CrossRefGoogle Scholar
Pollastro, R. M., 1990 Geothermometry from smectite and silica diagenesis in the diatomaceous Monterey and Sisquoc Formations, Santa Maria Basin, California Amer. Assoc. Petrol. Geol. 74 5 742.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 249 – 304.CrossRefGoogle Scholar
Reynolds, R. C. Jr. and Hower, J., 1970 The nature of interlayering in mixed-layer illite-montmorillonite Clays & Clay Minerals 18 25 – 36.CrossRefGoogle Scholar
Shimoyama, A. and Johns, W. D., 1971 Catalytic conversion of fatty acids to petroleum-like paraffins and their maturation Nature, Phys. Sci. 232 33 140 – 144.CrossRefGoogle Scholar
Solomon, D. H., 1968 Clay minerals as electron acceptors and electron donors in organic reactions Clays & Clay Minerals 16 31 – 39.CrossRefGoogle Scholar
Spotts, J. H. and Silverman, S. R., 1966 Organic dolomite from Point Fermin, California Amer. Mineral. 51 1144 – 1155.Google Scholar
Srodon, J., 1980 Precise identification of illite/smectite interstratifications by x-ray powder diffraction Clays & Clay Minerals 28 401 – 411.CrossRefGoogle Scholar
Surdam, R. C., Hall, C. A. Jr. and Surdam, R. C., 1984 Diagenesis of the Miocene Obispo Formation, Coast Range, California A Guidebook to the Stratigraphic, Tectonic, Thermal, and Diagenetic Histories of the Monterey Formation, Pismo and Hausna Basin, California 8 – 20.CrossRefGoogle Scholar
Dept. Geol. Sci. Bull. 1933 23 1.Google Scholar
Tissot, B. P. and Welt, D. H., 1984 Petroleum Formation and Occurrence New York Springer-Verlag.CrossRefGoogle Scholar
van Bennekom, A. J. and van der Gaast, S. J., 1976 Possible clay structures in frustules of living diatoms Geochim. Cosmochim. Acta 40 1149 – 1152.CrossRefGoogle Scholar
Weaver, C. E. and Beck, K. C. (1971) Clay water diagenesis during burial: How mud becomes gneiss: Geol. Soc. Amer. Spec. Publ. 134, 96 pp.Google Scholar
Williams, L. B., Ferrell, R. E. Jr. Chinn, E. W. and Sassen, R., 1989 Fixed-ammonium in clays associated with crude oils Appl. Geochem. 4 605 – 616.CrossRefGoogle Scholar
White, L. D., 1989 Chronostratigraphic and paleoceanographic aspects of selected chert intervals in the Miocene Monterey Formation, California .Google Scholar
Whitney, J. D., 1867 On the fresh water infusorial deposits of the Pacific coast and their connections with the volcanic rocks Calif. Acad. of Nat. Sci. Proc. 3 319 – 324.Google Scholar