. Additional notes on the Grinnell ice-cap. Ice -- Nunavut Baffin Island. Age of Solar System 97 rocks or ores which are somewhat older than 2,000 million years, although present indications are that the distribution in the number of samples of high age decreases rapidly around 2,000 million years and may terminate near that figure. It is generally agreed that an initially gaseous or molten earth would have solidified in less than million years. But the span of time between the formation of an initially molten earth and the 300 - METEORITIC POTASSIUM. GRAMS OF KCI Fig. 34.
. Additional notes on the Grinnell ice-cap. Ice -- Nunavut Baffin Island. Age of Solar System 97 rocks or ores which are somewhat older than 2,000 million years, although present indications are that the distribution in the number of samples of high age decreases rapidly around 2,000 million years and may terminate near that figure. It is generally agreed that an initially gaseous or molten earth would have solidified in less than million years. But the span of time between the formation of an initially molten earth and the 300 - METEORITIC POTASSIUM. GRAMS OF KCI Fig. 34. Beta-ray radioactivity per gram of potassium chloride separated from the Pultusk meteorite, plotted in the same manner as figure 33. creation of the atoms which it contains is entirely unknown. Present astronomical evidence favors the so-called short time scale of 109 to 1010 years. Thus, the stability of galactic clusters, the stability of wide binaires, the red-shift in extra-galactic objects, and other phenomena are compatible with a universe having essentially the same age as the The isotopic abundance ratios have been determined with the mass spectrograph for all known elements. A general rule, appar- ently related to the fundamental laws of nuclear forces, is that iso- topes of even atomic weight are always more abundant than isotopes 1 Louderback, Evans, Gutenberg, Kuiper, Tolman, and Epstein, "Symposium on the Geologic and the Cosmic Age ; Science, 82, p. 51, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Roy, Sharat Kumar, 1897-1962. Chicago : Field Museum of Natural History
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