Abstract
It has been established from geological studies that change in the atmospheric content of carbon dioxide gas commenced about one hundred million years ago. The likely origin of this change is advanced as being the onset of the Brewer circulation caused by the rise in terrain induced by tectonic plate movement. It is demonstrated that tectonic plate movement can be affected by impacts from external bodies which penetrate the crust of the Earth. The consequences of the change in atmospheric concentration of carbon dioxide are proposed as first, extinctions and reductions in animal numbers, including primates, as a result of changes in body chemistry of these animals and second, a change in the rate of weathering of rocks giving rise to changes in the availability of chemicals such as calcium and potassium which are essential for plant and animal life. This latter change contributing to the extinctions and reductions in animal numbers. It is shown that the change in weathering can account for the rise to dominance of angiosperm plants. It is concluded that there were several simultaneous evolutionary environments on Earth which were a function of altitude which gave rise to a vertical variation in atmospheric content of carbon dioxide. This variation disappeared with rise of terrain and the onset of the Brewer circulation. Such changes are advanced and being much more important than any changes in temperature caused by greenhouse effects since the disappearance of atmospheric variations in carbon dioxide allowed animal migration. It is demonstrated that the conditions of extinction could be reintroduced by human activities.
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References
Newell, N.D. (1967) Revolutions in the History of Life, Special Paper 89, Geological Society of America.
Courtillot, V.E. (1990) A volcanic eruption, Scientific American, pp. 53–60.
Raup, D.M. (1991) Extinction, Bad Genes or Bad Luck, London: W.W. Norton Publishers.
Skelton, P. (1993) Evolution, A Biological and Paleontological Approach, Wokenham and Open University.
Stanely, S.M. (1989) Earth and Life Through Time, New York: W.H. Freeman Publishers.
Alvarez, W. (1992) Catastrophes, J. Bourriau ed., Cambridge: Cambridge University Press.
Yabushita, S. and Allen, A.J. (1997) Did an impact kill the dinosaurs? Astro. and Geophys. Roy, Astro Soc., 38, 15–19.
Clube, V. and Napier, W. (1990) Cosmic Winter, London: Basil Blackwell Publishers.
Swisher III, C.C., Grajales-Nishimura, J.M., Montanari, A., Margolis, S.V., Claeys, P., Alvarez, W., Renne, P., Cedillo-Pardo, E., Maurasse, F.J.-M.R., Curtis, G.H., Smit, J. and McWilliams, M.O. (1992) Coveal 40Ar/39Ar ages of the 65.0 million years from the Chicxulub crater melt rock and the Creataceous Boundary Tektites, Science, 257, pp. 954–958.
Rae, H.O.C. The Planets, Their Origin and Development, New Haven: Yale University Press, p. 245.
Safranov, V.S. Evolution of the Protoplanetary Cloud and the Formation of the Earth and Planets, Nikko, Moscow, 1969, Israel Pro. Sci Translations, 1972.
Cameron, A.G.W. (1982) Icarus, 49, 298–312.
Walker, J.C.G. (1982) The earliest atmosphere of the earth, Precam. Res. 17, pp. 147–171.
Hunten, D.M., Pepin, R.O. and Owen, T.C. (1988) Meteorites and the Early Solar System, Tuscon: University of Arizona Press.
Imbrie, J. and Imbrie, K.P. (1979) Ice Ages: Solving the Mystery. New Jersey: Enslow Publishers.
Ziegler, A.M., Scotese, C.R. and Barnett, S.F. (1982) Mesozoic and cenozoic paleographic maps, in Tidal Friction and the Earth's Rotation. P. Brosche, J. Sundermann (eds.) New York: Springer-Verlag.
Kaye, G.W.C. and Laby, T.H. (1959) Physical and Chemical constants, 12th Edition, London: Longmans Green Company.
Simkin, T. (1993) Terrestrial volcanism in space and time, Ann. Rev. Earth Planet Sci., 21, pp. 427–452.
Chatterjee, S. (1984) The drift of India: a conflict in plate tectonics, Memoirs of the French Geological Society, 147, pp. 43–48.
Frakes, L.A. (1979) Climates Through Geologic Time, Amsterdam: Elsevier Scientific Publishing Company.
Brewer, A.W. (1949) Evidence for a world circulation provided by the measurement of helium and water distribution in the stratosphere, Quart J. Roy. Meteor. Soc. 75, Part 326 pp. 351–363.
Budyko, M.I. and Ronov, A.B. (1979) Chemical evolution of atmosphere in the phanerozoic, Geochem. Int., pp. 1–9.
Berner, R.A., Lasaga, A.C., and Garrels, R.M. (1983) Carbonate-silicate geochemical cycle and its effect on the atmospheric carbon dioxide over the past 100 million years, Amer. J. Sci., 283, pp. 641–683.
Slack, A.V. (ed.) (1968) Phosphoric Acid Vol 1., Part II, New York: Dekker Inc.
Riley, J.P. and Chester, R. (1971) Introduction to Marine Chemistry, London: Academic Press.
Rubey, W.W. (1951) Geologic history of sea water, Geol. Soc. Amer. Bull., 62, pp. 1111–1148.
Lambert, R.J.W. (1972) The nuclear submarine environment, Proc. Roy. Soc. Medicine, 65,No. 9, pp. 795–800.
Conroy, G.C. (1990) Primate Evolution, New York: W.W. Norton Co.
Friis, E.M., Chalconer, W.G. and Crane, P.R. (eds) (1987) The origins of Angiosperms and their Biological Consequences, Cambridge: Cambridge University Press.
Swain, T. (1976) Angiosperm-reptile co-evolution, Linnean Society Symposia, Vol 3 pp. 107–22.
Bolin, B., Houghton, J. and Meira Filho, L.G. (1994) Radiative Forcing of Climate Change. IPCC Report of S.A.W Group. U.K. Meterological Office, Reading, England.
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Robertson, D.S. Palaeo-variations in the atmospheric concentration of carbon dioxide and the relationship to extinctions. Speculations in Science and Technology 21, 171–185 (1998). https://doi.org/10.1023/A:1005466408465
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DOI: https://doi.org/10.1023/A:1005466408465