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Cause and implications of rock varnish microchemical laminations

Nature volume 310, pages 767–770 (1984)Cite this article

Abstract

Rock varnish is a dark coating composed mostly of clays and manganese and iron oxides1 that accretes on rock surfaces in all terrestrial environments2. Perry and Adams3 first observed micron-scale manganese-rich and manganese-poor (relatively iron-rich) layers in varnish and proposed that these may be related to unspecified environmental changes. Electron microprobe analyses reported here suggest that Mn:Fe ratios vary systematically with depth in varnishes on K/Ar-dated volcanic rocks from the Coso and Cima volcanic fields, eastern California, and on talus flatirons in the Negev Desert, Israel. These microchemical laminations probably reflect past fluctuations in the level of aeolian alkalinity, and possibly climatic change. This new indicator of terrestrial environmental change may be of importance to research on geomorphology, archaeology, palaeoclimatology, and Quaternary studies in arid environments.

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References

  1. Potter, R. & Rossman, G. R. Chem. Geol. 25, 79–94 (1979).

    Article  ADS  CAS  Google Scholar 

  2. Dorn, R. I. & Oberlander, T. M. Prog. Phys. Geogr. 6, 317–367 (1982).

    Article  Google Scholar 

  3. Perry, R. & Adams, J. Nature 276, 489–491 (1978).

    Article  ADS  CAS  Google Scholar 

  4. Dorn, R. I. & Oberlander, T. M. Science 213, 1245–1247 (1981).

    Article  ADS  CAS  Google Scholar 

  5. Schweisfurth, R., Jung, W. & Jacobs, M. in Geology and Geochemistry of Manganese, Volume 3. (eds Varentsov, I. M. & Grassley, Gy.) 279–283 (E. Schweizerbart'sche, Stuttgart, 1980).

    Google Scholar 

  6. Bromfield, S. M. & David, D. J. Soil Biol. Biochem. 8, 37–43 (1976).

    Article  CAS  Google Scholar 

  7. Elvidge, C. D. & Iverson, R. M. in Environmental Effects of Off Road Vehicles (eds Webb, R. J. & Wilshire, H. G.) 225–243 (Springer, New York, 1983).

    Book  Google Scholar 

  8. Whalley, W. B. in Chemical Sedimentation and Geomorphology (eds. Goudie, A. & Pye, K.) 197–226 (Academic, London, 1983).

    Google Scholar 

  9. Mallard, G. E. U.S. geol. Surv. Circ. 848-E, E13–E21 (1981).

    Google Scholar 

  10. Dorn, R. I. Quat. Res. 20, 49–73 (1983).

    Article  CAS  Google Scholar 

  11. Dohrenwend, J. C., McFadden, L. D., Turrin, B. D., & Wells, S. G. Geology 12, 163–167 (1984).

    Article  ADS  CAS  Google Scholar 

  12. Gerson, R. Israel J. Earth Sci. 31, 123–132 (1982).

    Google Scholar 

  13. Smith, G. I., Barczak, V. J., Moulton, G. F. & Liddicoat, J. C. U.S. geol. Surv. Prof. Pap. No. 1256 (1983).

  14. Ore, H. T. & Warren, C. N. Bull. geol. Soc. Am. 82, 2553–2562 (1971).

    Article  Google Scholar 

  15. Begin, Z. B., Ehrlich, A. & Nathan, Y. Israel geol. Surv. Bull. No. 63 (1974).

  16. Spaulding, W. G., Leopold, E. B. & Van Devender, T. R. in Late Quaternary Environment of the United States. Vol. 1, The Late Pleistocene (ed. Porter, S. C.) 259–293 (University of Minnesota Press, Minneapolis, 1983).

    Google Scholar 

  17. Wells, P. V. Ecol. Monogr. 53, 341–382 (1983).

    Article  Google Scholar 

  18. Mehringer, P. J. in Models and Great Basin Prehistory (ed. Fowler, D.) 113–167 (Desert Research Institute, Reno and Las Vegas, 1977).

    Google Scholar 

  19. McFadden, L. D., Dohrenwend, J. C. & Wells, S. G. in Surficial Geology of the Eastern Mojave Desert Region (ed. Dohrenwend, J. C.) (Geological Society of America Annual Meeting Guidebook, Reno, in the press.)

  20. Duffield, W. A. & Bacon, C. R. U.S. geol. Surv. Misc. Invest. Map. I–1200 (1981).

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  1. Department of Geography, University of California, Los Angeles, California, 90024, USA

    Ronald I. Dorn

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Dorn, R. Cause and implications of rock varnish microchemical laminations. Nature 310, 767–770 (1984). https://doi.org/10.1038/310767a0

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