[Bull Snipe]

Thanks, no geologist either. Off the West coast of India is the Shiva impact (370x250 miles). No link, have to google it. Jury is still out on exactly what it is, may not be an impact site. But it dates from about the time of the Chicxulub crater and the Deccan Traps.
I would think that the Siberian Traps would have had bad impact on life. Almost a million cubic miles of basalt poured onto the surface of the planet is a little over a million years.

[rustbucket]

Off the West coast of India is the Shiva impact (370x250 miles). No link, have to google it.

Thanks. I hadn't heard of the Shiva impact. Here are two articles:

Shiva

Another Shiva article

The Bombay High (or Mumbai High as it was later renamed) in the offshore area near the Deccan Traps does contain oil reservoirs.