Coasts Flashcards
(30 cards)
Concordant Coastline
Soft/Hard rock PARALLEL
BS
Between Coastline n Foreshore
Dry
(Berms)
FS
Surf Zone
NS
Breaker zone
Influenced by nearshore currents
OS
infinite
Beyond influence of waves
Dalmation
Due rising sea
Valleys run PARALLEL
(e.g. ADRIATIC SEA)
Haff
Chesil Beach
MEltwater deposited sand onto outwash plains
rising sea = constructive waves - spits
Discordant
Less resistant eroded, coastal shape changes = wave refraction
(e.g. SWANAGE BAY)
Sinks
Spit , Sand Dunes , Offshore Bar
SWASH aligned
Wave crest app. PARALLEL to coast
DRIFT aligned
Wave crest Break at ANGLE.
Consistent LSD
MECHANICAL
Freeze Thaw, Salt Weathering
CHEMICAL
Carbonation
BIOLOGICAL
Roots
SPRING Tide
2/Month
EMS Aligned
Extra g
NEAP Tide
MS perpendicular
ISOSTATIC
EMERGENT
Sea down , Land up.
EUSTATIC
SUBMERGENT
sea up , land flooded.
Rias Formation
Funnel shaped estuary
Form when valleys r flooded
Major drainage system
Bedding Planes
Horizontal cracks. breaks in strata caused by gaps in time due rock formation
Joints
Fractures caused by contraction as sediments dry
FOlds
Formed by pressure during tectonic activity
Runnell
Small beach draining a tidal pool left on beach after HIGH TIDE
Berm
Terrace of a beach which is formed ABOVE water level at HIGH TIDE