Pennsylvanian of Kentucky
Tidal Deposits 

	Flaser Bedding fluctuating flows (start/stop currents) sand ripples troughs of ripples are filled with mud environment favors sand deposits (relatively strong currents most often) more sand than mud
	Wavy Bedding fluctuating flows (start/stop currents) alternating layers of sand ripples and mud mud fills ripple troughs and thinly covers the crest environment does not favor sand or mud deposits (currents alternate between a relatively strong current followed by a calm period) about equal amounts of sand and mud
	Lenticular Bedding fluctuating flows (start/stop currents) incomplete sand ripples completely covered with mud environment favors mud deposits (calm periods with a few short strong currents) more mud than sand

	Comparing Bedding (A) flaser bedding- mostly sand ripples (B) wavy bedding - mixture of sand ripples and mud (C) lenticular bedding - mostly mud
	Location of Formation flaser bedding - commonly forms in relatively high energy environments (sand flats) wavy bedding  - commonly forms in environments that alternate frequently from higher to lower energies (mixed flats) lenticular bedding - commonly forms in relatively low energy environments (mud flats)

Web Page constructed by Tom Bellile (10-23-03)
 

Return to Clastic Sedimentology home page