Discuss the major developments, tectonically and biologically of each geological eon and era. The Geological Eons and Eras: Major Developments

Geological Eons, Eras and Major Developments
These are the largest divisions in geological time. The geological society 2020 states that each eon or era represents a significant period in Earth’s tectonic, and biological history. The Hadean Eon was the start of Earth’s history. Heavy bombardment by meteorites and comets made the Earth’s surface molten and the tectonic plate formation was continuing. This eon also saw the appearance of some of the earliest forms and species of life. In the Archean Eon, first landmasses were formed by the continual activity of the plates. The Proterozoic Eon witnessed the creation of the first multicellular organisms. The first multicellular organisms, and first animal species appeared during this period. With the rise of many new species, invertebrates, plants and animals during the Paleozoic Era, there was great biological diversity. The formation of Pangaea the supercontinent and the subsequent splitting of the continents marked this period of great tectonic activities. Cont…
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