Sandstone
Presentation
•
Science
•
9th - 12th Grade
•
Hard
Joseph Anderson
FREE Resource
4 Slides • 6 Questions
1
7.5 Common Clastic Sedimentary Rocks
2
Clastic Sedimentary Rocks with Gravel-Sized Clast
Notice the conglomerate rock on the left has clast with smooth rounded clast.
While the breccia on the right has clast with sharp angular edges.
3
Sand -Size Clasts
Sandstone and Quartz sandstone are difficult to differentiate. Principally, quartz sandstone will be very light in color compared to a darker sandstone
Arkose sandstone contains slight larger/coarse particles composed of pinkish colored feldspar.
Graywacke, common in the Bay Area, is composed of several different minerals such as quartz, feldspars and dark micas.
4
Mud-Sized Clasts
As you can see, siltstone has slight large silt-sized particles in medium-thick layers.
Shale, on the other hand has very small clay sized minerals and breaks in sheetlike pieces or chips.
5
Multiple Choice
Identify this rock
6
Multiple Choice
Identify this sand-sized clastic rock.
7
Multiple Choice
Identify this rock by it's thin layers.
8
Multiple Choice
Identify this gravel-sized clastic rock.
9
Multiple Choice
Identify this clastic rock that is common to the Bay Area.
10
Multiple Choice
This clastic rock can be found throughout Utah and Arizona.
7.5 Common Clastic Sedimentary Rocks
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