Shared Flashcard Set

Details

7a-8a Sed Envi
Sedimentary Envrionments
7
Geology
Undergraduate 1
02/03/2010

Additional Geology Flashcards

 


 

Cards

Term
[image]
Definition
Alluvial Fan: fan-shaped increase of alluvium deposited at the mouth of a canyon or at the front of a main stream. The sediment is made of individual fan shaped deposits each one noticeable from a deep canyon  front.
Term
[image]
Definition
Fluvial Envrionment(rivers):A Fluvial Environment is basically a bank of river and streams. Fluvial Environment includes sedimentary deposition in rivers that come to a split.
Term
[image]
Definition

Lacustrine Envrioments:

Lacustrine are environments with large lakes usually way bigger than the common ones. They change in level due to climate cycles or opening and closing of outlets due to glaciations and vertical movements of land region.

 

 

Some lakes are closely tied to glaciers. The lakes are confined with ice margins and in part of the higher lands such as south east and west.

 

Term
[image]
Definition

Deserts:landscape or region that receives very little water. Desert receives less than 25 cm of rain in a year on an average.

  Most desert surfaces are erosional: they are formed by deflated plain. Then large volumes of sediments build up in alluvial fans, sand seas, and lakes.

Term
[image]
Definition

Swamps:

   Swamps are forest wetlands. They may border a river with moving water, or live in a pond of still water.  They may even be dry in some parts of the year.

   Some specific Sediment included is such as sandstone, shale, or limestone.

Term
[image]
Definition

Deltas:a landform that is shaped at the entrance of a river where that river flows into an ocean, sea, estuary, lake, reservoir, flat arid area, or another river.

a)      Delta is the zone just by the river mouth where the distributaries mouth bar is dumped, and represents the area where the coarsest sea sediments are found. Offshore sediments compose about 70% of the sediment found on the continental crust.

Term
[image]
Definition

Beaches:

 Beaches are constantly changing from season to season and year to year. Each year the spits on the end of barrier islands grow longer. A barrier island may be as high as 6 meters above sea level.   Beaches are very shallow in the beginning but then when you get into it more the water gets deeper and deeper, which deposits sand or other sediments.

Supporting users have an ad free experience!