Environmental factors for around 680 million years ago in the Voyage area
Rock Name
Malverns Complex
Lithology (appearance)
Diorite and other metamorphic rocks
Period
Precambrian
How old
Around 680 million years
Environment of rock formation
Volcanic island arc
Climate
Polar
Latitude
60′ S of Equator
Oxygen as percentage of atmosphere
?
Carbon Dioxide as parts per million of atmosphere composition
?
Maximum day time temperatures
-10’C
Minimum night time temperature
-80’C
Sea temperature
Frozen
Weather risk
Extreme cold, blizzards, very cold winds
Midday Sun
Six months darkness, then very low angle sun in northern sky
UV index
1
Earthquake risk (scale 1 low risk to 9 high risk)
10
Tectonic
Above subduction zone. with associated volcanic island arc
Volcano risk
Explosive volcanoes, ejecting molten rock and ash.
Top predator
None
Animal Life
Primitive multi-cellular life in the oceans
Plant Life
Humidity
Very low
Rainfall
Snowfall – drifting snow
Wind
Strong polar winds
Day length
20 hours
Days in year
420