It is estimated that protoplanet Earth had a differntiated core,mantel, and crust within 30 million years of Proplyd formation. Matter on ProtoEarth would have been exposed to infrared radiation from the Protosun as well as high energy gamma, cosmic, UV, and xrays from Extrasolar system Sources. The infrared radiation would have provided some stable zones of hydrocarbon and water phase transitions.

Numerous supernovas would have occured in our nearby Star Cluster and therefore modern cellular based life forms would have had a difficult physiochemical environment for existence. However, other forms of life utilized these high energy opportunities to convert energy into the work required for organization of carbon, nitrogen, hydrogen, sulfur, and metal ion molecules into ProtoCells. The amount of energy required for this conversion can be theoretically estimated using Information Theory. The estimation can then be used to provide timeline for the energy to entropy conversion steps during ProtoCell Development. The exact nature of those steps can be further elucidated.

Theia and ProtoEarth Collided 4.5 Billion Years Ago. ref 1, 2 .Earth had an iron core at the time of collision but the core of Theia is not yet known. However, Theia is believed to have formed further away from the Sun and therefore would have contained more volatile gases such as water, carbon dioxide, and nitrogen. Evidence for the Great Impact Hypothesis comes from simulations, earth & moon gravity maps, and zinc isotope analysis.

Zircons suggest Earth's Crust and Hydrosphere formed after an impact 4.4 Billion years ago. Evidence of a prior crust and hydrosphere is currenty not available but is modeled by some simulations.

 

Gravity Maps of the moon. Scars from prior impacts more readily visible.

 

Late Heavy Bombardment 3.85 -3.95 Billion years ago with temperatue spike on Earth.

Vaalbara Supercontinent is believed to have formed 2.7 Ba along with or including a possible UR continent. Evidence exists for a biogenic land based sulfur oxidation process existing at that time. This suggest the presence of some minimal oxygen possibly from symbiotic cyanobacteria.

Breakup of Columbia/Nuna Supercontinent 1.30 -1.20 Ba

Models of Temperature, CO2, and Sea Level History

Ref 1.

Atmospheric Oxygen Levels

Eukaryot Cell. 2011 July; 10(7): 856–868.
doi: 10.1128/EC.00326-10
Do Red and Green Make Brown?: Perspectives on Plastid Acquisitions within Chromalveolates Richard G. Dorrell* and Alison G. Smith

ATMOSPHERIC OXYGEN, GIANT PALEOZOIC INSECTS AND THE EVOLUTION OF
AERIAL LOCOMOTOR PERFORMANCE

Microaerobic steroid biosynthesis and the molecular fossil record of Archean life
Jacob R. Waldbauer Dianne K. Newman, and Roger E. Summons

Linking Trace Metal Availability and Nitrogenase Evolution: Influence of the Late-Archean Marine Nickel Famine on the Emergence of Molybdenum-Based Nitrogen Fixation

Sulfur isotopes of organic matter preserved in 3.45-billion-year-old stromatolites reveal microbial metabolism

Contributions to late Archaean sulphur cycling by life on land 2.7ba