Environmental factors for around 308 million years ago in the Voyage area
Rock Name
Trenchard Formation
Lithology (appearance)
Grey or pinkish grey quartzose (mainly quartz grains) sandstone. Quartzose conglomerate beds are common at the base of the formation, increasing in thickness and clast (pebbles) size towards the north. Points to a source to the north.
Period
Upper Carboniferous
How old
Around 308 million years
Environment of rock formation
Sea to S gone. Rapid erosion of uplifted land.
Climate
Equatorial rainforest
Latitude
On the Equator
Oxygen as percentage of atmosphere
35% (21% today)
Carbon Dioxide as parts per million of atmosphere composition
340ppm (around 415ppm today and rising)
Maximum day time temperatures
38’C
Minimum night time temperature
26’C
Sea temperature
Weather risk
Lightning triggering mega forest fires
Midday Sun
Sun overhead no shade, except in rainforest
UV index
10
Earthquake risk (scale 1 low risk to 9 high risk)
6
Tectonic
Elevated areas from Variscan Orogeny
Volcano risk
None in area
Top predator
Megarachne
Animal Life
Arthropods over 2m long. Giant dragonflies
Plant Life
Forests of Calamites, Lepidodendron, Sigillaria
Humidity
High
Rainfall
Heavy thunderstorms
Wind
SE?
Day length
22.7 hours
Days in year
389