Environmental factors for around 400 million years ago in the Voyage area
Red sandstones, with thinner beds of mudstone and siltstone. Calcrete beds. Conglomeratic in places.
Around 400 million years
Environment of rock formation
Deposited in channels and flood plains of rivers.
21′ S of Equator
Oxygen as percentage of atmosphere
17% (21% today)
Carbon Dioxide as parts per million of atmosphere composition
3500ppm (around 415ppm today and rising)
Maximum day time temperatures
Minimum night time temperature
Rapid floods -seasonal storms over Caledonide Mts.
High in northern sky
Earthquake risk (scale 1 low risk to 9 high risk)
Iapetus Ocean closed. Mts. eroding away to NW.
None in area
Fish in rivers. Scorpions
Primitive plants with no roots
Days in year