from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. to examine information at another level or in greater detail; especially in a database, to navigate to a more detailed level or record
- n. an internal competition used to practice marching commands, in which the last person caught improperly executing a command wins
Sorry, no etymologies found.
The submarine is equipped to drill down for rock samples, through the superficial sediments of the sea bottom down to the volcanic rocks of the lithosphere itself, and it also has an onboard laboratory for dating rock samples radiometrically see Chapter 4.
When we hit bottom at nearly 20,000 feet full fathom 3,000, we drill down to the volcanic lithosphere and take a core sample of the rock.