Postimpact earliest Paleogene warming shown by fish debris oxygen isotopes (El Kef, Tunisia)

We report an ~1 per mil decrease in oxygen isotopic values (~5°C warming) beginning at the boundary and spanning ~300 centimeters of section (~100,000 years). The pattern found matches expectations for impact-initiated greenhouse warming.

Source: ScienceNOW - June 28, 2018 Category: Science Authors: MacLeod, K. G., Quinton, P. C., Sepulveda, J., Negra, M. H. Tags: Paleontology reports Source Type: news