Glen Penfield identified the Chicxulub crater using D: magnetic and gravitational field measurements. His research involved studying geophysical data that indicated a large buried structure consistent with the impact of a massive asteroid, which is associated with the mass extinction event that occurred around 66 million years ago.
What type of evidence did Glen Penfield use to identify the Chicxclub crater?
A: chemical analysis of rocks.
B: radioactive dating.
C: fossil records
D: magnetic and gravitational field measurements.
1 answer