What natural gamma well logging measured is total natural gamma radioactivity in layer, and it is a kind of most basic method in casing pipe well logging.

自然伽马测井测量的是地层总的自然伽马放射性，是套管井测井的一种最基本的方法。

youdao

What is it that sends any discussion at all of radioactivity into hysterical proofs of near total ignorance of the subject?

FORBES: Does The DoD Want To Kill Us All With Radioactive Nuclear Scrap Metal? No, No Not Really