1) Determine the percent sand of your sample and find that number on the bottom of the triangle. Note that the numbers read from right to left, not left to right. For example, if your sample is 65% sand, then you need to pick a point to the LEFT of the 60 mark.

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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1) Determine the percent sand of your sample and find that number on the bottom of the triangle. Note that the
numbers read from right to left, not left to right. For example, if your sample is 65% sand, then you need to pick
a point to the LEFT of the 60 mark.
Your first line,
showing 65% sand
FIGURE 3-16
10
20
30
100
40
50
percent clay,
loamy
sand sand
60
70
sandy
clay
sandy clay loam
sandy loom
8 8
80
V
A
ò
90
100
8
$/
clay
clay loam.
loam
10
S
percent sand
20
%
30
8
silty
clay
V
percent silt
$
silty clay
loam
%
silt loam
60
20
Chart showing the percentages of clay, silt, and sand in the basic textural classes.
70
-80
silt
6
90
100
Transcribed Image Text:1) Determine the percent sand of your sample and find that number on the bottom of the triangle. Note that the numbers read from right to left, not left to right. For example, if your sample is 65% sand, then you need to pick a point to the LEFT of the 60 mark. Your first line, showing 65% sand FIGURE 3-16 10 20 30 100 40 50 percent clay, loamy sand sand 60 70 sandy clay sandy clay loam sandy loom 8 8 80 V A ò 90 100 8 $/ clay clay loam. loam 10 S percent sand 20 % 30 8 silty clay V percent silt $ silty clay loam % silt loam 60 20 Chart showing the percentages of clay, silt, and sand in the basic textural classes. 70 -80 silt 6 90 100
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