Multimedia Gallery - Silt, Clay and Sand Size Relation


Download Image

18.41 KB

Full Name

Organization

Email Address

This content is governed by a Creative Commons license (CC-BY-NC). I acknowledge that permission for use of this content is granted solely for educational purposes; all use for commercial gain is prohibited. Contact the owner for any other use.

Silt, Clay and Sand Size Relation




ID # 6

Silt, Clay and Sand Size Relation
Relative sizes of gravel, sand, silt, and clay particles.

STEM Standard addressed: ESS2A - Earth Materials and Systems


Appropriate Grade Level(s)
  • 6-8
  • 9-12
  • College-level
Materials are best used for
  • Classroom Lectures
  • Distance Education Classes
  • Extension Presentations
  • Website Information
General Course Areas
  • Introduction to Soil Science
Description
Beginning with the largest mineral particles, coarse fragments are greater than 2 millimeters in diameter, an dare primarily composed of unweathered or slightly weathered rock fragments such as gravel stones, and cobbles. They are relatively inert in the soil and are not considered directly when determining the USDA soil texture. Next in size are sand and silt particles. Like coarse fragments, they may be unweathered or slightly weathered rock fragments containing primary minerals. They may also be made up of resistant primary minerals such as quartz that remain from the breakdown of larger rocks. Together sand and silt form the skeleton of the soil. The green dot is representing silt with 0.05 to 0.002 mm. The clay is represented in red with less than 0.002 mm and sand is represented in tan with 2.0 to 0.05 mm.

Peer Review: Yes

Credit this item to: Know Soil Know Life, SSSA
Media Date: 2015-12-01
Provided By: Susan Chapman


Author(s)/Creator(s)

  • * Know Soil Know Life
    SSSA

Submitted By: Ms. Jenna LaFave


Keywords

  • Know Soil Know Life

Comments



Please login to submit a comment.


Log In to your account


Already a member, certified, or existing customer?*

* Cookies must be accepted to log in.

Not sure if you have an account?
Check Your Email

Join Us!
Connect with members and access the information you need.
Learn more.

Ready to Join?
If you have an account, login on the left. Not sure if you have an account or need to create one? Check your email with the link above. We look forward to welcoming you.