I have chosen instead to provide a chronology of significant works and their authors with a view to providing a sense of how perspectives on Geology changed over time.
The selections and comments here are not a complete exposition of the works of the authors mentioned; rather they were chosen to illustrate and exemplify changing perspectives over time.
In 1637 Descartes produced a cosmogony that was highly influential for more than a century. It was not in their estimates of the age of the Earth - Descartes retained the biblical date.
Ussher accepted the Biblical account at face value, relying on the Biblical genealogies and on extant historical records.
By the end of the 18'th century it was clear that the Earth had a long and varied history. The major debate was between the catastrophists, e.g., Cuvier, who held that the history of Earth was dominated by major catastrophic revolutions and the uniformitarians, e.g.
Hutton and Lyell, who held that the history of Earth was dominated by slow relatively uniform changes in an Earth with a static over all history.
Many authors choose to present the history of a complex subject by breaking it up into major threads and following the history of each thread separately.
There was no single estimate of the Earth's age in the mid 1800's and no good way to arrive at one.
There were various attempts to estimate the Earth's age, working back from sedimentation rates and other geophysical phenomena.
He implicitly assumed that the world was created much as it is now.
Descartes, however, attempted to discern a physical history of the Earth.