My name is Justin Arjoon, I'm a long-time lurker of the ASIF. I'd like to ask for your help on an article I'm writing for mainstream consumption. The article is comparing the Holocene extinction with the Permian-Triassic extinction.
I'm aware that there were few-to-no methane clathrates that existed during that time, so I have two questions:
1) Were there any in the two ages preceding?
2) Was there any sort of permafrost analogue to today that could have caused a massive methane release if it melted? If not, what about the preceding ages?
I'm not writing an alarmist article, it is supposed to be as factual as possible without embellishing.
Thank you all for your help!