packing proximity

geology

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July 2, 2026

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In geology, "packing proximity" refers to the number of grain-to-grain contacts within a sedimentary rock. This is a component of a rock's fabric, which influences its porosity and permeability—its ability to hold and transmit fluids like oil and water. Packing is determined by factors such as grain size, shape, and the degree of compaction, and it affects the rock's overall density. Analyzing thin sections under a microscope helps geologists understand packing density and proximity. This concept is distinct from mathematical packing problems, which involve arranging figures within a given space.12

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sedimentary rock
Fabric
…number of grain-to-grain contacts (packing proximity) and to comparisons between the sum of the lengths of grains to the total length of a traverse across a thin section (packing density).
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…number of grain-to-grain contacts (packing proximity) and to comparisons between the sum of the lengths of grains to the total length of a traverse across a thin section (packing density).
Read More