| 释义 |
time-stratigraphic unit time-stratigraphic unit[′tīm ¦strad·ə¦graf·ik ‚yü·nət] (geology) A stratigraphic unit based on geologic age or time of origin. Also known as chronolith; chronolithologic unit; chronostratic unit; chronostratigraphic unit; time-rock unit. |