Environmental factors for around 410 million years ago in the Voyage area
Silicate-conglomerate, Calcite-cemented (calcrete).
Around 410 million years
Environment of rock formation
Semi-arid conditions, seasonal rainfall.
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
3500ppm (around 415ppm today and rising)
Maximum day time temperatures
Minimum night time temperature
Heat. Dust storms. Extensive floods in wet season.
High in northern sky
Earthquake risk (scale 1 low risk to 9 high risk)
Crust of area coming under compressional forces.
None in area
Scopions. Jawless fish in rivers.
Low growing vascular plants – shallow roots
100-500mm per year in wet season
Days in year