10 Comments
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Steve Sorrell's avatar

Gaps are ok! But please don't stop! I'm up to episode 1076. I'm glad it doesn't take me 2-6 hours for each. It can take from 15 minutes to an hour or more though!

Richard I Gibson's avatar

No expectation of stopping! And thanks for what you do!

Ingrid Crickmore's avatar

Re the Deccan traps (btw "12 miles" is missing a decimal point!) and the timing of the Chicxulub (sp?) impact, I read (I think in When Life Nearly Died by Benton) that while the Deccan eruptions started before the meteor impact and so hadn't been thought to have been triggered by the impact, a more recent study showed that the output of lava had been relatively minor before the impact event, but right after it, the output of lava increased hugely maybe even by an order of magnitude, so it's highly possible after all that the impact triggered most of the Deccan outpouring. UC Berkeley study reported in Smithsonian here: https://www.smithsonianmag.com/science-nature/meteorite-killed-dinosaurs-also-triggered-underwater-volcanoes-180968106/

Richard I Gibson's avatar

Thanks for catching the typo. Yes, I think the jury is still out on the relationships among the Deccan volcanics, the impact, and the extinction. You see reputable studies on all sides of the question!

Linda Mussehl's avatar

Congrats on publishing such a body of work. Thanks.

Hollis Marriott's avatar

I first encountered "trap" in Gilbert's account of the Henry Mts.—Instead of reaching the surface, "In this chamber it congealed, forming a massive body of trap." Was trap in more general use then?

Richard I Gibson's avatar

Interesting, that sounds like he was using it almost as a rock type rather than in relation to the geomorphic form like stairs. I wonder if it had become sort of a generic term for basaltic rocks? I think "trap rock" is a kind of generic term in the crushed stone business for more or less any basalt - certainly no outcrop/geomorphology implied, so maybe it was indeed (and to some extent still is) used more generally.

Mike Reinke's avatar

But how is okenite a zeolite?? The O doesn't double the Si in number like all the other chemical formulas of zeolites.

Richard I Gibson's avatar

Ack, of course you're right. I just had my head full of its association with zeolite. Thanks for pointing that out! Post edited to reflect this.

Mike Reinke's avatar

Play as you want. Write as you want. The columns are sturdy, but dont be their slave.