一种新的牙形石分析方法

THE TOWER METHOD:AN IMPROVED METHOD FOR CONODONT RECOVERY FROM CALCAREOUS ROCKS

摘要:

Abstract:

For several decades,acetic acid or other organic acids have been used to diissolve limestones and other calcareous rocks for the recovery of conod- ont elements and other microfossils.The standard laboratory procedure has involved immersing the rock samples in 10 per cent acetic acid in buckets or beakers,followed by wet sieving and heavy iiquid and/or magnetic concen tration(Collinson,1963).A flow diagram based on that published by Col- linson is shown in Fig.1. In my experience conodont elements retrieved...