Delta Vocabulary 0.0 / 5 ? GeographyRivers and fluvial processesASAQA Created by: chamurCreated on: 25-01-15 13:33 Distributary The channels a river splits into as a delta forms. They help to determine the delta's shape. 1 of 12 Bird's foot The delata that appears like a brid's foot as the distributaries all have different currents and spread the sediment out at different rates. 2 of 12 Delta Front The steeply sloping front of the delta that faces the lake or sea. 3 of 12 Flocculation A process where tiny particles of clay or silt in suspension couglate with salt water to form heavy flocs which sink to the bottom of the bed. 4 of 12 Flocs A loosely clumped mass of fine particles. 5 of 12 Delta A depositional feature found in certain circumstances where a river meets a sea or lake. 6 of 12 Mircotidal A very low tidal range of less than 2m, controlled by wave action. 7 of 12 Avulsion The separation of material by pulling away. 8 of 12 Suspended Sediment Solid particles transported in a river's load. 9 of 12 Top set beds Where the larger and heavier particles are first to be deposited as the river loses energy. 10 of 12 Arcuate The land around the mouth arches out into the sea and the river splits many times on the way to the sea. This creates a fan effect. 11 of 12 Turbidity Current An underwater current flowing swiftly downslope according to the weight of the sediment it carries. 12 of 12
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