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Geologic time scale - Wikipedia, the free encyclopedia (1761 words) |
 | The geologic time scale is used by geologists and other scientists to describe the timing and relationships between events that have occurred during the history of the Earth. |
| The table of geologic periods presented here is in accordance with the dates and nomenclature proposed by the International Commission on Stratigraphy, and uses the standard color codes of the United States Geologic Survey. |
| Because geologic units occurring at the same time but from different parts of the world can often look different and contain different fossils, there are many examples where the same period was historically given different names in different locales. |
| Geologic history (from Himalayas) -- Encyclopædia Britannica (891 words) |
| It is, in effect, that segment of Earth history that is represented by and recorded in rock strata. |
| History is a science—a branch of knowledge that uses specific methods and tools to achieve its goals. |
| Brief history of Uruguay from its settlement by Europeans in the 16th century to the restoration of democracy in the 1980s. |
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