Meandering Stream vs. Freshwater Delta


MEANDERING STREAM VS. FRESHWATER DELTA


Meandering stream in the field	Meandering Streams: Has Lateral Accreation Structures and grain size tend to fine upwards Lower contact is erosional Paleocurrents have a wide variety of flow directions Bounding surface dips perpendicular to flow direction Confined flow, has a channel Formation of a meandering stream. Direction of flow is into the screen
	Stratagraphic column key


Freshwater Deltas: Downstream Accreation Coarsens upwards and fines outwards Paleocurrents don't vary Bounding surface dips in same direction of flow Unconfined flow with channel cutting into top of deposit Has topsets, bottomsets and foresets Foresets are high angle, ~10-25° Contacts are gradational or sharp (Except where channel cuts in, erosional Deposition of a delta. Shows downstream accreation.	Delta deposit in the field
Stratagraphic columns of a delta deposit. Displays coarsening upwards and fining outwards succesions	Delta deposit displayin topset, bottomset and high angle foresets

Web page compiled by Amanda Raitanen 10-28-03