Chapter 12 The Archean Atmosphere: Its Composition and Fate

摘要: Publisher Summary The composition of Earth's early atmosphere must be inferred both through its interactions with the oceans and sediments, by other independently-deduced constraints on environment. Fortunately between atmosphere, ocean, sediments can rapid pervasive, thus clues about atmospheric were indeed recorded. Furthermore, responded to those processes that altered crust during Archean Early Proterozoic. These changes in turn climate probably influenced evolution biosphere. This chapter discusses evidence for both, 3.8 3.0 Ga as well how changed 2.0 Ga. earliest was derived from multiple sources. Nonradiogenic rare gases might have been inherited solar nebula, could retained gravitationally since time planetary accretion, are extremely depleted relative their cosmic abundances.