sw24 - Exam III is Wednesday March 31 st Updated study...

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Unformatted text preview: Exam III is Wednesday, March 31 st Updated study guide will be posted Friday Review session will be held on March 29 th in class Soil Morphology and Taxonomy Subordinate Distinctions g – gleying h – illuvial organic matter p – plowing/disturbance t – clay accumulation w – non illivial development of color/structure o – oxic g, h, p, t, w, o Subordinate Distinctions and Organic Matter a, e, i Denotes the degree of organic matter decomposition in the O horizon . Oa – highly decomposed (sapric) Oe – moderately decomposed (hemic) Oi – slightly decomposed (fibric) Sapric –most decomposed, low plant fiber, low water content Hemic – intermediate decompostion Fibric – least decomposed, recognizable fibers Subordinate Distinction Summary Master: O, A, E, B, C, R Subordinate symbols: g, h, p, t, w and a,e,i Examples: Oa, Oe, Oi Bt Bg Btg Bw Ap Other Designations Vertical Subdivisions Characterized by similar master and/or subordinate properties separated by “degree”. Bt1 Bt2 Bt3 Bt horizons Transitional Horizons Transitional layers between master horizons. A E E B B E Dominant character Subordinate Character Synthesis Ap AE E Bh Bt Btg1 Btg2 * Extra Credit: 1. The subordinate distinction, h, refers to accumulation of ______________ 2. The Subordinated distinction g refers to ____ 3. The dominant character of an AB transitional horizon is the ____________ horizon....
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This note was uploaded on 02/04/2011 for the course SWS 3022 taught by Professor Bonczek during the Spring '11 term at University of Florida.

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sw24 - Exam III is Wednesday March 31 st Updated study...

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