| ̷ ̷ˌ ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ adjective
: of, relating to, or constituting rocks deposited during a specified time regardless of their composition, fossil content, or conditions of origin
| ̷ ̷ˌ ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ adjective
: of, relating to, or constituting rocks deposited during a specified time regardless of their composition, fossil content, or conditions of origin
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012