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