Basal age is a term that is commonly used in the field of geology and paleontology. It refers to the age of the oldest rocks or fossils that are found in a particular geological formation. Understanding the basal age of a formation is important because it can help scientists to determine the relative age of other rocks or fossils that are found within that formation.
Definitions
The basal age of a formation refers to the age of the oldest rocks or fossils that are found within that formation. This age is determined through a variety of methods, including radiometric dating and stratigraphic analysis.
Origin
The term basal age has its roots in the Latin word basalis, which means “pertaining to the base”. The term was first used in the field of geology in the 19th century, and has since become a standard term within the discipline.
Meaning in different dictionaries
The meaning of basal age is consistent across different dictionaries. The Merriam-Webster dictionary defines basal age as “the age of the oldest rock or fossil in a stratigraphic unit”. The Oxford English Dictionary defines it as “the age of the lowest layer of rock or sediment in a given sequence”.
Associations
Basal age is closely associated with the concepts of stratigraphy and relative dating. By understanding the basal age of a formation, scientists can determine the relative age of other rocks or fossils that are found within that formation.
Synonyms
Synonyms for basal age include “bottom age”, “lowest age”, and “earliest age”.
Antonyms
Antonyms for basal age include “top age”, “highest age”, and “latest age”.
The same root words
Other words that share the same root as basal age include “base”, “basic”, and “basement”.
Example Sentences
- The basal age of the rocks in this formation is estimated to be around 500 million years old.
- By understanding the basal age of the sedimentary layers, we can determine the relative age of the fossils that are found within them.
- The basal age of this particular geological formation is still a subject of debate among scientists.