Concordance (from Latin: concordans , to agree ), as the counter-term to discordance , describes the undisturbed and unidirectional superposition of older by younger rock layers. This means that the rock stratification has the same stroke and fall (approximately parallel spatial position ). Concordance can thus be taken as an indication of uninterrupted sedimentation , although the sedimentation rate can fluctuate.
An apparently identical concordance is called an accordance .
- Hans Murawski, Wilhelm Meyer: Geological dictionary . 11th revised and expanded edition. Elsevier, Spektrum, Akademischer Verlag, Munich et al. 2004, ISBN 3-8274-1445-8 , pp. 115 .