On his return, he sends his sample to the laboratory for dating, and after a few weeks receives the lab report.Let us imagine that the date reported by the lab was 150.7 ± 2.8 million years.
by Tas Walker A geologist works out the relative age of a rock by carefully studying where the rock is found in the field.
In contrast, the mammoth fauna survived the LGM and became extinct or migrated northward when the climate started to ameliorate.
The l LP extinction on the Japanese Islands occurred in two pulses.
As a result, the present paper indicates that the extinction of large mammals in the complex roughly coincided with the onset of the last glacial maximum (LGM: from ca.
25,000 BP to 16,000 BP) and subsequent domination by subarctic conifers.
By looking at other outcrops in the area, our geologist is able to draw a geological map which records how the rocks are related to each other in the field.