英和和英

名詞

megablock (複数形 megablocks)

1. A very large block.
   • 1983, Nicholas Rast, Profiles of Orogenic Belts, page 169:

     The earliest potassic granites in the southern part of the Timpton-Sutam megablock appear only at the end of the fourth cycle.

   • 2012, Wylie Poag, The Chesapeake Bay Crater:

     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.