Earth science 2.3 : Sedimentary Rock
Upcoming SlideShare
Loading in...5
×
 

Earth science 2.3 : Sedimentary Rock

on

  • 4,628 views

 

Statistics

Views

Total Views
4,628
Views on SlideShare
4,402
Embed Views
226

Actions

Likes
1
Downloads
92
Comments
0

7 Embeds 226

http://www.ustudy.in 164
http://www.sssd.com 34
http://sssd.schoolwires.net 11
http://www.slideshare.net 7
http://ustudy.in 6
http://10.0.0.4 3
http://localhost 1
More...

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Earth science 2.3 : Sedimentary Rock Earth science 2.3 : Sedimentary Rock Presentation Transcript

  • Sedimentary rock
    Earth Science
    Chapter 2.3
  • Objectives:
    Describe the origin of sedimentary rock.
    Describethe three main categories of sedimentary rock.
    Describe three types of sedimentary structure.
  • Origins of Sedimentary Rock
    Wind, water, ice, sunlight, and gravity all cause rock to physically weather into fragments
    Through erosion, these rock and mineral fragments, called sediment, are moved from one place to another.
    The sediment is deposited in layers, and eventually newer layers cover the older layers.
  • The most noticeable feature of sedimentary rock is its layers, or strata.
    A single, horizontal layer of rock is sometimes visible for many miles.
  • Composition of Sedimentary rock
    Sedimentary rock is classified by the way it forms.
    Clastic sedimentary rock
    made of fragments of rocks cemented together by a mineral such as calcite or quartz.
    can have coarse-grained, medium-grained, or fine-grained textures.
    Sandstone
    Siltstone
    Conglomerate
    Shale
    Fine – grained
    Course – grained
  • Chemical sedimentary rockforms from solutions of dissolved mineral and water.
    As rainwater slowly makes its way to the ocean, it dissolves some of the rock material it passes through
    Some of this dissolved material eventually crystallized and forms the mineral that make up chemical sedimentary rock.
    Halite
  • Organic sedimentary rock
    made up of the skeletons and shells of sea animals
    These remains collect on the ocean floor and eventually become cemented together
    Coal is a type of organic sedimentary rock that is formed when decomposed plant material is buried beneath sediment and is changed by increasing heat and pressure.
    Chalk
    Coal
  • Sedimentary Rock Structures
    Many features indicate the way sedimentary rock is formed
    Most important feature is stratification
    the process in which sedimentary rocks are arranged in layers
    Strata differ from one another depending on
    Kind
    Size
    Color
  • Ripple marks
    Features in which sedimentary rocks sometimes record the motion of wind and water waves on lakes, oceans, rivers, and sand dunes
    Mud cracks
    Structures that form when fine-grained sediments at the bottom of a shallow body of water are exposed to the air and dry out.
    Even raindrop impressions can be preserved in fine-grained sediments, as small pits with raised rims.