Is there one place on Earth where we can see the complete geologic column? How and why?
You can Google your question and find several sites. Here is one but it may not be the best one.
https://www.usna.edu/Users/oceano/pguth/md_help/geology_course/geologic_column.htm
Yes, there is no single place on Earth where the complete geologic column, representing the entire sequence of Earth's geological history, can be observed in its entirety. The geologic column is a theoretical representation of Earth's rock layers that show the succession of different rocks and fossils over time.
The reason why we cannot find the complete geologic column in one location is due to various factors such as erosion, tectonic activity, and incomplete preservation of certain rock types or time periods. Additionally, the geologic column spans billions of years, and the processes of erosion and deposition are continually reshaping the Earth's surface.
However, scientists have been able to piece together the geologic column by studying rock sequences from different regions around the world. By comparing the fossils, type of rocks, and their relative ages found in different locations, scientists have been able to create a comprehensive understanding of the Earth's geological history.
To study the geologic column, geologists typically examine outcrops, which are exposed rock formations visible on the Earth's surface. They analyze the rocks' composition, structure, and the fossils they contain to determine their age and the environment in which they formed. They also use various dating techniques such as radiometric dating to further refine the age of rocks.
By combining observations from different outcrops, stratigraphic correlations, and other geological evidence, scientists can construct a more complete picture of the geologic column and the Earth's history. This process involves careful analysis, collaboration among researchers, and ongoing refinement as new information and discoveries arise.