Life's a Beach
They distribute sediments parallel to shore
What are longshore currents?
A type of lake that forms from a collapsed magma chamber
What is a caldera?
The glacial process that polishes bedrock
What is abrasion?
A dunefield >125 km2
What is an erg?
These muddy areas tend to form in low-relief coasts protected from wave action by barriers and spits
What are tidal flats
A linear ridge of coarse sediment just above the high tide line
What is a berm?
Laminated sediments that form from repeated cycles of spring melt and ice-covered conditions
What are glacial varves?
Concentric ridges formed via glacial boulders pressing into rocks, or verbose people that are easy to scam
What are chatter marks
It started forming during the Jurassic when Laurentia was at roughly 10* N latitude
What is the Navajo Sandstone?
These brackish coastal bays form perpendicular to the coastline
What are esturaries?
They often form on the landward side of beaches and are semi-vegetated
What are eolian dunes?
A horsehoe-shaped lake or a beast-of-burden's cute accessory
What is an oxbow?
A word describing both your professor (sometimes) & large boulders dropped in the proglacial zone
What is erratic?
The angle of repose of sediments on the lee side of a dry sand dune
What is 30-35 degrees?
A common bedding sequence that forms in the intertidal zone, or a bass-playing small arachnid
What is a rhythmite
The one word reason that heavy minerals are smaller than the quartz minerals on a berm
What is density?
Lake hydrological status that may promote precipitation of dissolved ions and/or carbonate
What is closed basin?
Sediments underlying many fertile agricultural areas of the Midwestern US
What is loess?
The type of dunes most likely to leave tabular cross beds in the sed record
What are traverse dunes?
Location of the James River fall line
What is Richmond?
Part of beach with trough crossbedding and Skolithos ichnofacies
What is the upper shoreface?
A simple method for determining organic matter content in lake sediments via burning
What is loss-on-ignition?
Specific type of deposits that comprise a glacial moraine
What is unstratified diamict?
Type of eolian system most likely to preserve interdune deposits
What are wet eolian systems?
Lenticular and flaser bedding are often found in sediments deposited on this part of a tidal system
What is the supratidal zone?