sedimentary rocks
DESCRIPTION
Sedimentary Rocks. Osmtann Science. Origins of Sedimentary Rocks. Over time, rocks erode and smaller pieces form. The pieces are carried by wind and settle somewhere else. . 3 Main Types. CLASTIC Smaller sediments cemented together CHEMICAL Chemical reactions form new product ORGANIC - PowerPoint PPT PresentationTRANSCRIPT
Sedimentary Rocks
Osmtann Science
Origins of Sedimentary Rocks
Over time, rocks erode and smaller pieces form. The pieces are carried by wind and settle somewhere else.
3 Main Types
CLASTIC• Smaller sediments cemented togetherCHEMICAL • Chemical reactions form new productORGANIC• Dead organic material bound together.
CLASTICCOARSE GRAINED …FINE GRAINED
CLASTIC
CLASTICSANDSTONE: Used in buildings
CLASTIC
SANDSTONE DOORWAY
CLASTIC
SANDSTONE CASTLE
CHEMICALSALT: HALITEfrom the evaporation of ocean or saline lake waters.
CHEMICALHEMATITE: IRON ORE. Iron and Oxygen combine in solution and deposit as a sediment.
CHEMICAL
A piece of a banded iron formation, a type of rock that consists of alternating layers with iron(III) oxide (red) and iron(II) oxide (grey). BIFs were mostly formed during the Precambrian, when the atmosphere wasn't yet rich in oxygen. Moories Group, Barberton Greenstone Belt, South Africa.
IRON
CHEMICAL: Iron Ore
This stockpile of iron ore pellets will be used in steel production.
CHEMICAL: Iron Ore
IRON ORE IS USED TO MAKE STEEL
STEEL CABLES PICTURED TO THE LEFT
ORGANICOcean animals called coral create huge deposits of limestone As they die, their skeletons collect on the ocean floor.
ORGANIC
ORGANICCoal is an organic sedimentary rock that forms mainly from plant debris. The plant debris usually accumulates in a swamp environment. Coal is combustible and is often mined for use as a fuel.