31. Plate Tectonics as seen on the contemporary Earth became dominant only during the latter part of geological times . 32. Thus, Arthur Holmes'report concluded that radioactive dating was the only reliable means of pinning down geological time scales. 33. Coarse grained rocks are formed very slowly, while fine grained rocks are formed quickly, on geological time scales. 34. The loch is a very recent creation of geological times , forming naturally in a massive storm in 1720. 35. This would mimic the way in which most of the world's native sulphur was deposited over geological time . 36. Owing to uplift in the Jurassic and Cretaceous, there are no mineral layers from these geological time periods. 37. The Valley of Peshawar is covered with consolidated deposits of silt, sands and gravel of recent geological times . 38. Evidence of multiple gains and losses of pyrenoids over relatively short geological time spans was found in hornworts. 39. Macroevolution includes changes occurring on geological time scales, in contrast to microevolution, which occurs on any time scale. 40. Hence, Futterer infers, in recent geological times no large sea has occupied the central part of the Gobi.
