Environmental factors for around 432 million years ago in the future Voyage area
Rock Name
Coalbrookdale Formation
Lithology (appearance)
Olive grey to dark blue-grey silty mudstones with some calcareous siltstones, nodular calcareous beds and bentonites.
Period
Silurian – Wenlock
How old
Around 432 million years
Environment of rock formation
Shallow warm sea on continental shelf. Ash from distant volcanoes.
Climate
Warm tropical / sub-tropical
Latitude
30′ S of Equator
Oxygen as percentage of atmosphere
17% (21% today)
Carbon Dioxide as parts per million of atmosphere composition
3300ppm (around 415ppm today and rising)
Maximum day time temperatures
24’C
Minimum night time temperature
15’C
Sea temperature
24’C
Weather risk
Occasional storms churning up sea floor
Midday Sun
High in northern sky
UV index
8
Earthquake risk (scale 1 low risk to 9 high risk)
7
Tectonic
Continental plate collision to west
Volcano risk
Ash falls and earthquakes – perhaps tsunami
Top predator
Sharks
Animal Life
Rich marine life – bryozoans, corals, crinoids, trilobites
Plant Life
Primitive plants on some land areas – no flowers or grasses
Humidity
Rainfall
Wind
SE?
Day length
21.1 hours
Days in year
414