SEDIMENTARY ROCKS Sedimentary rocks n How are sedimentary

Sedimentary rocks n How are sedimentary rocks formed? n What do sedimentary rocks look

Sedimentary Rocks n Rocks the form from other rocks that have been weathered.

How are sedimentary rocks formed? Sedimentary rocks are formed through: 1. Erosion 2. Deposition

How are sedimentary rocks formed? n Step one is: Erosion of elevated land such

How are sedimentary rocks formed? n Step two is: Deposition of the eroded material

How are sedimentary rocks formed? n Step three is: Compaction of buried sediment over

How are sedimentary rocks formed? n Step four is: Cementation of the particles into

What do sedimentary rocks look like? n Three types of sedimentary rocks 1. Clastic

What do sedimentary rocks look like? n 1. 2. 3. 4. Clastic rocks are

What do sedimentary rocks look like? Clay/silt sandstone shale

What do sedimentary rocks look like? n 1. 2. 3. Crystalline rocks are pure

Crystalline rocks formation n These rocks from evaporation of sea water and chemical precipitation.

What do sedimentary rocks look like? n 1. 2. Biological (bioclastic) rocks are formed

What do characteristics tell us about the rock? n Grain size is evidence of

What do characteristics tell us about the rock?

Steps to ID a Sedimentary Rock n Texture n Clasitc, Crystalline or Bioclastic Grain

How to use ESRT page 7 sedimentary rocks?

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SEDIMENTARY ROCKS

Sedimentary rocks n How are sedimentary rocks formed? n What do sedimentary rocks look like? n What do the characteristics tell us about the rock? n What are sedimentary rocks used for? n How do you use page 7 of the ESRT for sedimentary rocks?

Sedimentary Rocks n Rocks the form from other rocks that have been weathered.

How are sedimentary rocks formed? Sedimentary rocks are formed through: 1. Erosion 2. Deposition 3. Compaction 4. Cementation …At the earth’s surface usually from other rocks. n

How are sedimentary rocks formed? n Step one is: Erosion of elevated land such as mountains

How are sedimentary rocks formed? n Step two is: Deposition of the eroded material

How are sedimentary rocks formed? n Step three is: Compaction of buried sediment over time

How are sedimentary rocks formed? n Step four is: Cementation of the particles into a solid rock Many times sand is the glue!

What do sedimentary rocks look like? n Three types of sedimentary rocks 1. Clastic - sediments cemented together 2. Bioclastic - organic material (fossils) 3. Crystalline – Nonclastic (chemical) - Deposited by chemical precipitation of minerals in sea water. (salt in water)

What do sedimentary rocks look like? n 1. 2. 3. 4. Clastic rocks are made of particles cemented together such as: Clay - shale Silt - siltstone Sand - sandstone Pebbles - conglomerate

What do sedimentary rocks look like? Clay/silt sandstone shale

What do sedimentary rocks look like? n 1. 2. 3. Crystalline rocks are pure cement such as: Rock salt Rock gypsum Limestone (has fossils)

Crystalline rocks formation n These rocks from evaporation of sea water and chemical precipitation.

What do sedimentary rocks look like? n 1. 2. Biological (bioclastic) rocks are formed through organic remains such as: Coal Limestone (has fossils)

What do characteristics tell us about the rock? n Grain size is evidence of environment where rock formed n Fossils give clues to past life and climate

What do characteristics tell us about the rock?

What are sedimentary rocks used for?

Steps to ID a Sedimentary Rock n Texture n Clasitc, Crystalline or Bioclastic Grain size n Composition n What it looks like n Fossils? Other features like ripple marks? n Acid test n

How to use ESRT page 7 sedimentary rocks?