Environmental factors for around 400 million years ago in the Voyage area
Rock Name
Brownstones
Lithology (appearance)
Red sandstones, with thinner beds of mudstone and siltstone. Calcrete beds. Conglomeratic in places.
Period
Devonian
How old
Around 400 million years
Environment of rock formation
Deposited in channels and flood plains of rivers.
Climate
Arid, hot
Latitude
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
32’C
Minimum night time temperature
15’C
Sea temperature
24’C
Weather risk
Rapid floods -seasonal storms over Caledonide Mts.
Midday Sun
High in northern sky
UV index
8
Earthquake risk (scale 1 low risk to 9 high risk)
3
Tectonic
Iapetus Ocean closed. Mts. eroding away to NW.
Volcano risk
None in area
Top predator
Scorpions
Animal Life
Fish in rivers. Scorpions
Plant Life
Primitive plants with no roots
Humidity
Low
Rainfall
Low
Wind
SE
Day length
21.4 hours
Days in year
410