Select the layer below that is NOT a good marker bed for temporal correlation.

Question

Quizplus · Accepted Answer

A bed of conglomerate lying on a transgressive surface is not a good marker bed for temporal correlation because it represents a depositional event rather than a time marker. Conglomerates can form in a variety of environmental settings and may not necessarily provide a consistent record of time. On the other hand, volcanic ash beds, dark and light bands in evaporite deposits, and iridium-enriched layers are good marker beds because they are time markers that can be used to correlate across different locations.

Select the Layer Below That Is NOT a Good Marker