Presentation on theme: "Vocabulary Topography: The landscape of a place Precipitation: The process of forming rock from a solution through evaporation."— Presentation transcript:
Vocabulary Topography: The landscape of a place Precipitation: The process of forming rock from a solution through evaporation
Clastic Sedimentary Rock Clastic rock is formed through when fragments of other rocks are deposited, compacted and cemented together. Clastic rock can take many different forms depending on the size of the fragments (clasts) Examples of clastic rocks include: Shale, Sandstone, Mudstone, Conglomerate, and Coal
The fragments (clasts) can be very small or quite big SandstoneConglomerate
Chemical Sedimentary Rock Chemical sedimentary rock forms through the process of PRECIPITATION. A solution such as sea water evaporates and leaves behind the minerals to create a new rock. Limestone is made from a solution of Calcite that comes from sea shells Halite (rock salt) is made when highly concentrated salt water Often, these types of rocks are formed in arid climates where evaporation is most intense
Some examples… HaliteLimestone
Organic Sedimentary Rock Organic sedimentary rock is made from organic matter Because organic matter can burn, this kind of rock is often used for energy. Coal is made from dead vegetation in swamps that is compacted over time Oil is made from dead microorganisms (like algae) that fall to the bottom of the ocean and are compacted over millions of years. That is why they are called FOSSIL FUELS!!
Where is oil found Oil is found in sedimentary rocks that are POROUS and can soak up the oil. When geologists are looking for oil, they look for sedimentary rocks like shale that can hold oil.