Environmental factors for around 340 million years ago in the Voyage area

Rock Name
Llanelly Formation (former name Whitehead Limestone)

Lithology (appearance)
Limestones formed around the shore (peritidal) with lagoons where stromatolites develop from calcite muds bound in algal mats.

Period
Carboniferous

How old
Around 340 million years

Environment  of rock formation
Coastal barrier islands cutting off salty (hypersaline) lagoons. Occasional storms.

Climate
Equatorial

Latitude
14′ S of Equator

Oxygen as percentage of atmosphere
27% (21% today)

Carbon Dioxide as parts per million of atmosphere composition
450ppm (around 415ppm today and rising)

Maximum day time temperatures
45’C

Minimum night time temperature
29’C

Sea temperature
34’C

Weather risk
Heat. Tornadoes. Storm surges

Midday Sun
Sun overhead

UV index
11

Earthquake risk (scale 1 low risk to 9 high risk)
5

Tectonic
Variscan Mtn ranges rising to south. (S. Europe)

Volcano risk
None in area

Top predator
Sharks beyond barrier islands

Animal Life
Sharks, ammonites, crinoids. Stromatolite growth

Plant Life
On land Carboniferous forests establishing

Humidity

Rainfall

Wind

Day length
22 hours

Days in year
398