megablock
nounEtymology From mega- + block.
1
A very large block.
- The earliest potassic granites in the southern part of the Timpton-Sutam megablock appear only at the end of the fourth cycle.1983, Nicholas Rast, Profiles of Orogenic Belts, page 169:
- On the single and two-channel profiles, however, ringing interference (repetition of shallower reflections) between the basement and postimpact sediments prevents clear definition of the displaced megablocks.2012, Wylie Poag, The Chesapeake Bay Crater:
- Related terms
- superblock