Information om | Engelska ordet MESOARCHEAN

Exempel på hur man kan använda MESOARCHEAN i en mening

• Its Earth equivalent consists of most of the Mesoarchean and Neoarchean eras (Archean eon), Paleoproterozoic and Mesoproterozoic eras (Proterozoic eon).
• The Mesoarchean era is thought to be the birthplace of modern-style plate subduction, based on geologic evidence from the Pilbara Craton in western Australia.
• Similarly, the Proterozoic eonothem is divided youngest to oldest into the Neoproterozoic, Mesoproterozoic and Paleoproterozoic erathems, and the Archean eon and eonothem are divided similarly into the Neoarchean, Mesoarchean, Paleoarchean and the Eoarchean, for which a lower (oldest) limit is undefined.
• The level of preservation of the giant domal stromatolites and associated carbonate platform makes these cliffs a very rare, if not unique, locality to study Mesoarchean paleoenvironments and chemostratigraphy.
• The oldest rocks in Uganda are the Mesoarchean gneisses and granulites of the Uleppi Group (or ‘Complex’) together with the associated Goli charnockitic gneiss, both reckoned to have been formed around 3,080 million years ago, in the extreme northwest of the country between Nebbi and Koboko.
• The southern part is thought be of Paleoarchean to Mesoarchean in age, with some Neoarchean additions.

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