Definitions

1. adjective

Produced or formed at the place of deposition, such as rocks or minerals formed from materials deposited by a particular process.

“The authigenetic hydrocarbons found in the sedimentary rocks provided valuable insights into the Earth’s ancient ecosystem.”

2. noun

A substance or material that is authigenetically formed.

“The authigenetic carbonates in the ancient ocean provided a unique fossil record of the Earth’s past climate.”