Aftershocks from 200-year-old earthquakes are still being felt today
Interesting Engineering, November 15, 2023
[interestingengineering.com]

The paper is:

Chen, Y. and Liu, M., 2023. Long-Lived Aftershocks in the New
Madrid seismic Zone and the Rest of Stable North America. Journal
of Geophysical Research: Solid Earth, 128(11), no.e2023JB026482.
[agupubs.onlinelibrary.wiley.com]

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)