Abstract
BLACK, hydrated ferromanganese oxide (FMO) concretions of microscopic to macroscopic size and complex mineralogy cover ocean floors all over the world at depths of up to 8 km (ref. 1). These amorphous–crystalline nodules have a total Cu, Ni and Co content of 40 p.p.m. to 4% and vary greatly in trace element content, apparently because of varying growth rates caused by the different Eh and pH in their environments. Black, amorphous, hydrated desert varnish (DV) coatings, 10–100 µm thick, are extensively found in limited areas of the world's arid lands2,3 in both the subtropics and in non-sterile areas of the Antarctic dry valleys4. Marine FMO nodules are formed principally by biological fixation processes; the mode and rate of formation of DV, on the other hand, are not understood, but concern anthropologists in their efforts to date petroglyphs and other artefacts of ancient man5.
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References
Heezen, B. C., and Hollister, D. C., The Face of the Deep (Oxford University, London, 1971).
Engel, C. G., and Sharp, R. P., Bull. geol. Soc. Am., 69, 487–518 (1958).
Lakin, H. W., Hunt, C. B., Davidson, D. F., and Oda, U., US Geol. Surv. Prof. Pap., 475 –B, B–28–B–31 (1963).
Rudolf, E. D., in Antarctic Ecology (edit. by Holdgate, M. W.), 2, 685 (Scientific Committee for Antarctic Research–Academic, New York, 1970).
Grant, C., Baird, J. W., and Pringle, J. K., in Rock Drawings of the Coso Range, Inyo County, California (Maturango Museum, China Lake, California, 1968).
Glasby, G. P., Naturwissenschaften, 62, 133–135 (1975).
Goldberg, E. D., in The Sea (edit. by Hill, M. N.), 2, 18, footnote (Interscience, New York, 1963).
Jenne, E. A., in Trace Inorganics in Water (edit. by Gould, R. F.), 337–387 (American Chemical Society, Washington, 1968).
Kittredge, J. S., in Experimental Marine Biology (edit. by Mariscal, R. N.), 225–267 (Academic, New York, 1974).
Ehrlich, H. L., in Ferromanganese Deposits on the Ocean Floor (edit. by Horn, D. R.), 63–70 (NSF-IDOE, Washington, 1972).
Greenslate, J., Science, 186, 529–531 (1974).
Bonatti, E., Kraemer, T., and Rydell, H., in Ferromanganese Deposits on the Ocean Floor (edit. by Horn, D. R.), 149–166 (NSF-IDOE, Washington, 1972).
Glasby, G. P., Mar. Chem., 1, 105–125 (1972–73).
Scheffer, F., Meyer, B., and Kalk, E., Z. Geomorph., 7, 112–119 (1963).
Burns, R. G., and Brown, B. A., in Ferromanganese Deposits on the Ocean Floor (edit. by Horn, D. R.), 51–61 (NSF-IDOE, Washington, 1972).
Hooke, R. Le-B, Yang, H.-Y., and Weiber, R. W., J. Geol., 77, 275–288 (1969).
Burns, R. G., and Burns, V. M., Nature, 255, 130–131 (1975).
Taylor, R. M., McKenzie, R. M., and Norrish, K., Aust. J. Soil Res., 2, 235–248 (1964).
Murray, J. W., Geochim. cosmochim. Acta, 39, 505–519 (1975).
Hem, J. D., US Geol. Surv. Prof. Pap., 475 –C, C-216 (1963).
Chaptal, L., La Nature, 60, pt. 2, 449–454 (1932).
Cameron, R. E., in Antarctic Terrestrial Biology (edit. by Llano, G. A.), 195–260 (American Geophysical Union–NSF-NRC, Washington, 1972).
Rizk, F., El-Arabaty, A., and El-Sarky, A., Transactions Paper T75082-3, Winter Meeting IEEE PES, New York, January 26–31 (1975).
Raab, W., in Ferromanganese Deposits on the Ocean Floor (edit. by Horn, D. R.), 31–49 (NSF-IDOE, Washington, 1972).
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BAUMAN, A. Desert varnish and marine ferromanganese oxide nodules: congeneric phenomena. Nature 259, 387–388 (1976). https://doi.org/10.1038/259387a0
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DOI: https://doi.org/10.1038/259387a0
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