Deep Impact — or the Day the Dinosaurs Died
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This paragraph jumped out at me:
“The fossil deposit also teems with tektites, tiny glass beads that are the telltale fallout of planetary-scale impacts. Fifty percent of the fossilized fish were found with tektites in their gills, as if the fish had inhaled the material. Also recovered were tektites trapped in amber. Their chemical composition was unchanged in 66 million years, and it closely matched the unique chemical signature of other tektites associated with the Chicxulub event.”
“The top layer of the fossil bed was found to be rich in iridium”
Wow. Just wow!
And the scientific paper on which it was based:
I was wondering if the two Dino- diggers dressed up for the occasion or really worked dressed like Indiana Jones. They wear very impractical boots for instance.
So I got the Alvarez book too (it came today!) when I saw it recommended by Steve Brusette in the Notes section for the chapter “Dinosaurs Die Out” in his recent book The Rise and Fall of the Dinosaurs. Haven’t yet started it, but glad you are enjoying it. He described it as “a readable, entertaining, scrupulous first-person view” of how the riddle of the K-Pg extinction was solved.
As far as the fossil photos, yes, they were terrific. Robert DePalma and his group did us (and the video) a big favor by making their paper open access. This meant I had full rights to reuse their materials including photos, etc. Many of those fossil pictures I took from the supplemental section of the paper.
Anyway, I’m very glad you liked it!
Yes, we are so lucky in that not only does the planet preserve this info, but that there are people who dedicate their lives to studying and searching for it.
I don't remember hearing about Alvarez ( and his equally brilliant dad) by name until reading A Short History of Nearly Everything. I do remember hearing of the impact theory during the 80s, but the names never registered. Now I think I need to get my hands on this book by Alvarez as well: A Most Improbable Journey A BIG HISTORY OF OUR PLANET AND OURSELVES.
(Editing for touchstones.)
Colorado Fossils Show How Mammals Raced to Fill Dinosaurs’ Void https://www.nytimes.com/2019/10/24/science/fossils-mammals-dinosaurs-colorado.ht...