| 1 | Two fundamentally different orogenic systems have existed on Earth throughout the Phanerozoic. | |
| 2 | The history of Earth is divided into four eons - starting with the earliest, these are the Hadean, Archean, Proterozoic, and Phanerozoic. | |
| 3 | The Altai orogeny, as one of notable crustal accretion areas, is famous for its abundant mineral deposits. | |
| 4 | This Formation provides important paleobiological information from which to assess status of Mesoproterozoic life, and to evaluate paleoenvironmental conditions and pre_Phanerozoic biostratigraphy. | |
| 5 | Recent studies show, however, that rapakivi granites can be formed in age from Archaean to Phanerozoic and can even occur in orogen. |
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