Environmental factors for around 240 million years ago in the Voyage area
Rock Name
Helsby Formation (old name Bromsgrove Sandstone)
Lithology (appearance)
Fine- to medium-grained, cross-bedded and flat-bedded sandstones. Fluvatile (water) and aeolian (wind) origin.
Period
Triassic
How old
Around 240 million years
Environment of rock formation
Braided rivers crossing semi-arid land. Rivers often seasonal. Some dunes.
Climate
Semi-arid with seasonal rainfall giving flash floods
Latitude
20′ N of 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
40’C
Minimum night time temperature
15’C
Sea temperature
Weather risk
Flash floods. High temperatures.
Midday Sun
Sun high in northern sky
UV index
8
Earthquake risk (scale 1 low risk to 9 high risk)
7
Tectonic
Midst of supercontinent Panagea
Volcano risk
None in area
Top predator
Bromsgroveia
Animal Life
Triassic reptiles e.g. Bromsgroveia
Plant Life
Pine like trees growing close to main river channels
Humidity
Low
Rainfall
Seasonal
Wind
Strong hot dry E to NE winds
Day length
23.2 hours
Days in year
376