It's our own K-T layer
"The Plastocene – Plastic in the sedimentary record"
https://blogs.egu.eu/divisions/ssp/2019/01/09/the-plastocene...
alt Hacker News
"The Plastocene – Plastic in the sedimentary record"
https://blogs.egu.eu/divisions/ssp/2019/01/09/the-plastocene...