Sediments and Sedentate - Gravel 

Page / - last modified by Roelof Zwaan on 2021/09/30 15:18 

Gravel 
last modified by Roelof Zwaan
on 2021/09/30 15:18

Table of Contents

Gravel is a granular sedimentary rock. The grains need to have a diameter of more than 2 mm and less than 63 mm. De grains of this rock are coarser than those of sand and less coarse than those of pebbles and boulders.
Sub-categories
Within the grainsize gravel there are some subcategories to characterize the types of gravel. Following table describes them.
Type	Grain size	
Coarse gravel	> 20 - ≤ 63 mm	
Medium coarse gravel	> 6.3 - ≤ 20 mm	
Fine gravel	> 2.0 - ≤ 6.3 mm	
References
•	NEN-EN-ISO 14688-1:2019
Gravel

Image	Gravel	
Contents
•	Sub-categories
•	References
•	Gravel