Environmental factors for around 299 million years ago in the Voyage area
Haffield Breccia (also called Permian Breccia and may be equivalent to Clent Breccia in Birmingham area)
Breccia – angular fragments – in a red-brown mudstone matrix. Clasts (the fragments) are mainly Precambrian volcanic rocks.
Permian (possibly very end of Carboniferous)
Around 299 million years
Environment of rock formation
Desert, hot, occasional violent torrential rain, producing flash floods that spread rock debris over plain.
20′ N of Equator
Oxygen as percentage of atmosphere
26% (21% today)
Carbon Dioxide as parts per million of atmosphere composition
1000ppm (around 415ppm today and rising)
Maximum day time temperatures
Minimum night time temperature
-4’C (deserts go very cold at night due to clear atmosphere)
Violent flash floods. Extreme heat. No shade
Sun high in southern sky
Earthquake risk (scale 1 low risk to 9 high risk)
Midst of the vast super continent Panagea.
None in area
Little life about?
Possibly the odd reptile . end Permian Mass Extinction
Few conifers in areas where playas (temporary lakes) frequently form.
Extreme during short lived storms
Days in year