Dating a dinosaur bone
This material was compressed together with sediments into a sandstone rock.
The fossils and rock tell us about what lived in prehistoric Hawke’s Bay and what the environment was like.
Dinosaur bones have been dated, based on the half life of certain elements, at millions of years.
The data was challenged by Thomas Stafford as poor science due to assumed contamination from modern C-14 with younger surficial calcium carbonate.
We know this because their fossils have been found in a few places.
The fossils of a number of different dinosaurs were found at the Mangahouanga Stream, in north-west Hawke’s Bay, by Joan Wiffen and her colleagues.
Scientist for the last hundred years have been searching for a crator or remnants of space rock.
Finally in 2008 scientist think they have found an impact site at the bottom of a nearby lake Cheko.