Fossils
Carbon films
Silhouettes or Outlines of leaves organisms on rocks
Sedimentary
What are rocks formed from the compaction and cementation of bits and pieces of rock
Gravity
The force that makes a landslide or avalanche erode sediments
4 types of erosion
In the UK it’s a cash register but the mixed size sediments deposited by a glacier
What is Till
Cast
When minerals fill in a mold it takes the shape of an organism making this type of fossil
Foliated
What are metamorphic rocks where the mineral grains have been squished and aligned into layers
Oxidation Hydrolysis and Carbonic acid
What are examples of Chemical Weathering
Like a street name in Wayland this forms when a meander gets cut off
What is an Oxbow Lake which forms when a meander gets cut off from the main river by weathering erosion and deposition
Antártica and Greenland
What are covered by a continental glacier also called an ice sheet
Mineral replacement
What is when minerals from groundwater replace the entire organism. Examples include Dino bones, shells, wood
Extrusive
What are igneous rocks that form from lava cooling quickly on the surface are called this type of igneous rock
Desert erosion
What is wind which is the type of erosion most common in a desert
2 terms used to describe a meander bend
What are the cut bank for the Outside bend where water moves faster and causes more erosion and point bar for the Inside bend where water moves slower and deposits sediments
Cirque
What is a bowl shaped indent in mountains eroded by a glacier
These can provide clues about the past environment of an area
What is something that can be learned from fossils
Two processes
What are heat and pressure which are the 2 processes that must occur for a rock to turn into a metamorphic rock
2 types of this type of weathering are mechanical and chemical
What is Biological weathering such as by tree roots or animals and moss or lichens
Bed load, Suspended is 1 type Name the other
Sediments that roll, bounce or slide along the river bottom. Suspended Load floats along without touching. Dissolved Load is invisible material in solution in the water which is there but you can’t see it
Lateral and Terminal are sediment piles of what
What are moraines where lateral are side piles of sediment and terminal are at the end of a glacier
Preventing decay
What is a dead organism should be rapidly buried in sediments in order to prevent decay or destruction of dead organisms
Clastic
Sedimentary rocks that are made of bits and pieces of sediments are called this type of rock
This process can be compared to an onion when rock formed underground rises to the surface
What is Pressure release a process which causes the emergent rock to peel like an onion
Mississippi famously has one of these
What is a Delta where sediments deposit at the end of the river where it slows and enters the sea. The “Mississippi River Delta”
Erratics
What are large boulders deposited by glaciers after they retreat