Sedimentary Rock thin Section Study.pptx

shamimadibgregory 7 views 9 slides Aug 29, 2025
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Identification of sedimentary rocks from microscopic study.

Petroleum System

Sedimentary Rock Classification The classification of sedimentary rocks is largely based on differentiating the processes that lead to their formation Clastic Sedimentary Rocks: If the rock is largely made from broken pieces (called clasts ) of rock that have been mechanically weathered Chemical Sedimentary Rocks: if the rock is largely the product of chemical weathering

Sedimentary Rock Classification Biochemical Sedimentary Rocks: If organisms facilitate the precipitation of these minerals from water (An example of biochemical precipitation is the formation of skeletal minerals in many organisms: from starfish and clams that grow calcite) Organic Sedimentary Rocks: Rocks can also be formed from the carbon-based organic material produced by ancient life

Clastic / Ditrital

Chemical and Biochemical

Organic

Properties that can be Identified from Thin Section Rock Type Minerals (2) Sorting Spherocity Angularity Compaction Secondary Porosity Porosity With the help of adobe illustrator and image j software

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