I want to know the answer to the following question:
What temperatures did the organic deposits need to form bitumen over the eons?
All the background I'm provided with is that "They were covered by mud, buried deeply over the eons, and gently cooked into oil by geothermal heat at a temperature of 50 to 150 °C (120 to 300 °F).". Is that enough to answer the question?
Answer: yes