limesandとは 意味・読み方・使い方

名詞

limesand (uncountable)

1. (geology) A course sediment found in the seabed containing primarily ground up shells, sometimes used in agriculture as an acidity regulator.
   • 1877, New Jersey. Legislature, Documents, page 122:

     This field had had on it about seventy loads of muck per acre, which alone did no good until an application of limesand was given.

   • 1968, Royal Geological Society of Cornwall, Transactions

     The middle part is a limesand consisting of 15-25% recognisable shell fragments cemented by aragonite. In the whole rock there is almost no quartz. Nearer the shore the limesand is replaced by lime-mud, ...