Environmental factors for around 410 million years ago in the Voyage area
Sandstone And Argillaceous (clay) Rocks, Interbedded. Sandstone beds more dominant that in Freshwater W. Form. – rejuvenation of rivers
Around 410 million years
Environment of rock formation
Sediments of the Senni Formation were deposited by rivers draining southwards.
Tropical. Semi-arid. Wet season.
21′ S of Equator
Oxygen as percentage of atmosphere
17% (21% today)
Carbon Dioxide as parts per million of atmosphere composition
3000ppm (around 415ppm today and rising)
Maximum day time temperatures
Minimum night time temperature
Heat. Flash flooding in wet season.
High in northern sky
Earthquake risk (scale 1 low risk to 9 high risk)
Uplift of areas to NW gives faster rivers.
None in area
Scorpions, Eurypterids, Trilobites, jawless fish
Low growing vascular plants – shallow roots
Days in year