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Dinosaur skull geometry does not follow functional optimization trends but facilitates adaptability. [PDF]

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On Some Problems of the Lead Isotope Method and Its Application in Geology

Isotopes in Environmental and Health Studies, 1985
Some new trends in the mathematical modelling of the lead isotope evolution in connection with the dynamic development of the earth's crust and with the exchange of materials between the crust and the mantle are discussed. The mathematical modelling of the derivatives with respect to time of U/Pb and Th/Pb ratios instead of μ and W give the possibility
exaly   +2 more sources

Geology and Reserves of Lead and Zinc Ores : A World Survey

Nature, 1949
AT the eighteenth session of the International Geological Congress, held in London last summer, after being postponed from 1940, the proceedings of Section F were devoted to a consideration of the geology, paragenesis and reserves of the ores of lead and zinc. Up to the time of the Second World War, it had been assumed generally that resources of these
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Geology and Geochemistry of Lead-Zinc Mineralization in Ameri, Southeastern Nigeria

British Journal of Earth Sciences Research
The Geology and geochemistry of Lead-Zinc Mineralization has been carried out in parts of Ameri, South eastern Nigeria. The study area was mapped and lithological units and structural features were identified and studied. A total of twenty-seven (27) samples from five (5) wells (AMR 014, AMR 036, AMR 038, AMR 048, and AMR 049) of the study area were ...
A.B. Segun, B. S. Jatau., I. Y. Tanko,
exaly   +2 more sources

Lead isotopes in geology

The International Journal of Applied Radiation and Isotopes, 1961
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Lead isotopes.—Minerals, rocks and inorganic materials, 3 (isotopes in geology)

Palaeogeography, Palaeoclimatology, Palaeoecology, 1972
N.A.I.M. Boelrijk, H.N.A. Priem
exaly   +2 more sources

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