| English term or phrase: geological marker layer | Anybody got a tranlsation for this guys? He's talking about a layer of rocks where they found a hadrosaur footprint, and he says, "This is a geological marker layer -- it marks the end of the dinoasur age." Any thoughts on the "geological marker layer" part? I'm guessing maybe
طبقة جيولوجية فاصلة
but I thought I'd ask in case there's a specific Arabic scientific term for it...
Thank a million! |
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