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<table>Examples of USDA TIR soil signatures of variable quartz content (XRD analysis of silt-sand fraction) in relation to the diagnostic 8.63 <i>μ</i>m reststrahlen feature.</table>

Applied and Environmental Soil Science

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Figure 5

Figure 5: Investigations into Soil Composition and Texture Using Infrared Spectroscopy (2–14 <svg style="vertical-align:-3.69pt;width:14.375px;" id="M1" height="14.8125" version="1.1" viewBox="0 0 14.375 14.8125" width="14.375" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><g transform="matrix(.022,0,0,-.022,.062,10.15)"><path id="x1D741" d="M583 83l20 -12q-58 -103 -161 -103q-28 0 -42.5 17.5t-14.5 43.5q0 30 16 78l-3 1q-23 -44 -62 -77t-73 -33q-39 0 -55 27h-2l-15 -59l-13 -52l-11 -38q-15 -57 -31 -81h-103q24 41 48 138l122 517h113l-74 -317q-3 -12 -3 -23q1 -21 9.5 -29t30.5 -8q49 0 103 91
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Applied and Environmental Soil Science

Investigations into Soil Composition and Texture Using Infrared Spectroscopy (2–14 m)

Figure 5