Classifying Sedimentary Rocks

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SEBASTIEN SETO

COAL

DOLOMITE GYPSUM LIMESTONE

Stratification is a visible feature of sedimentary rocks. They are the layers you can see as the different types of sediment

CLASTIC ROCKS

SHALES

SANDSTONES

CONGLOMERATES

"Glue" holding the Clastic rocks together is either Calcite, iron oxide, or silica

PRODUCTS OF WEATHERING

QUARTZ

CLAY

CALCIUM CARBONATE/CaCO3

Classifying Sedimentary Rocks

TYPES OF SEDIMENTARY ROCKS

ORGANIC SEDIMENTARIES

Form from accumulation of organic debris (carbon containing) Contain Calcite

CHEMICAL SEDIMENTARIES

Form when mineral constituents in solution become supersaturated and inorganically precipitate.

CLASTIC

MATRIX

Mud/ grained sediment surrounding clasts

CLASTS

Large pieces of sand or gravel

Form from weathering products that don't dissolve in water

HOW ARE THEY FORMED

CEMENTATION

Precipitation of mineral matter in the space of the grains , holding the grains together

COMPACTION

The new minerals are overlayed, forcing forcing grains together

DEPOSITION

Sediment accumulates in a deposit area from a source area

WEATHERING

Igneous rock is broken down to form new minerals