799:
93:
Plinthite concretions are coherent enough to be separated readily from the surrounding soil. Plinthite commonly occurs within and above reticulately mottled horizons. The part of the iron-rich body that is not plinthite normally stains the fingers when rubbed while wet, but the plinthite center does
77:
that is saturated with water for some time during the year. Initially, iron is normally segregated in the form of soft, more or less clayey, red or dark red redox concretions. These concretions are not considered plinthite unless there has been enough segregation of iron to permit their irreversible
97:
Plinthite does not harden irreversibly as a result of a single cycle of drying and rewetting. After a single drying, it will remoisten and then can be dispersed in large part if one shakes it in water with a dispersing agent. In a moist soil, plinthite is soft enough to be cut with a spade. After
72:
on exposure to repeated wetting and drying, especially if it is also exposed to heat from the sun. The lower boundary of a zone in which plinthite occurs generally is diffuse or gradual, but it may be abrupt at a lithologic discontinuity. Generally, plinthite forms in a
102:. Indurated ironstone materials can be broken or shattered with a spade but cannot be dispersed if one shakes them in water with a dispersing agent.
233:
170:
129:
510:
174:
133:
122:
162:
216:
494:
499:
504:
515:
535:
520:
530:
525:
488:
209:
87:
802:
656:
137:
225:
178:
776:
409:
202:
61:
that usually form platy, polygonal, or reticulate patterns. Plinthite changes irreversibly to an
821:
691:
78:
hardening on exposure to repeated wetting and drying. Plinthite is firm or very firm when the
696:
761:
746:
606:
736:
681:
83:
69:
815:
781:
666:
79:
766:
711:
74:
771:
751:
671:
651:
631:
621:
616:
51:
756:
706:
661:
646:
611:
581:
447:
354:
319:
294:
58:
741:
686:
626:
389:
384:
374:
309:
279:
259:
99:
62:
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irreversible hardening, it is no longer considered plinthite but is called
726:
641:
596:
472:
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467:
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417:
369:
364:
339:
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329:
304:
289:
254:
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65:
194:
786:
721:
462:
457:
359:
40:
701:
55:
32:
24:
731:
566:
561:
556:
551:
47:
36:
28:
198:
716:
46:
Plinthite is a redoximorphic feature in highly weathered
94:
not. It has a harsh, dry feel when rubbed, even if wet.
544:
481:
408:
232:
86:and hard when the moisture content is below the
210:
8:
217:
203:
195:
171:United States Department of Agriculture
130:United States Department of Agriculture
110:
511:Canadian system of soil classification
175:Natural Resources Conservation Service
163:"Examination and Description of Soils"
134:Natural Resources Conservation Service
116:
114:
123:"Keys to Soil Taxonomy, 10th edition"
7:
495:Unified Soil Classification System
14:
500:AASHTO Soil Classification System
54:, it commonly occurs as dark red
798:
797:
516:Australian Soil Classification
507:(French classification system)
1:
536:List of vineyard soil types
838:
521:Polish Soil Classification
161:Soil Survey Staff (1993).
121:Soil Survey Staff (2006).
795:
545:Non-systematic soil types
531:List of U.S. state soils
526:1938 USDA soil taxonomy
505:Référentiel pédologique
489:FAO soil classification
88:permanent wilting point
657:Calcareous grassland
234:World Reference Base
43:and other minerals.
226:Soil classification
410:USDA soil taxonomy
236:for Soil Resources
167:Soil Survey Manual
50:. The product of
809:
808:
35:-poor mixture of
829:
801:
800:
697:Hydrophobic soil
219:
212:
205:
196:
190:
189:
187:
186:
177:. Archived from
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152:
151:
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142:
136:. Archived from
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82:content is near
68:or to irregular
19:(from the Greek
837:
836:
832:
831:
830:
828:
827:
826:
812:
811:
810:
805:
791:
762:Subaqueous soil
747:Serpentine soil
607:Parent material
540:
477:
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193:
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182:
160:
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70:soil aggregates
12:
11:
5:
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737:Prime farmland
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729:
724:
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692:Fuller's earth
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682:Expansive clay
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84:field capacity
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10:
9:
6:
4:
3:
2:
834:
823:
820:
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803:Types of soil
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788:
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782:Tropical peat
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667:Dry quicksand
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519:
517:
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482:Other systems
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181:on 2006-02-06
180:
176:
172:
168:
164:
157:
154:
143:on 2006-09-22
139:
135:
131:
124:
117:
115:
111:
105:
103:
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95:
91:
89:
85:
81:
80:soil moisture
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71:
67:
64:
60:
57:
53:
49:
44:
42:
38:
34:
30:
26:
22:
18:
712:Martian soil
183:. Retrieved
179:the original
166:
156:
145:. Retrieved
138:the original
96:
92:
75:soil horizon
45:
20:
16:
15:
777:Terra rossa
772:Terra preta
752:Spodic soil
672:Duplex soil
652:Brown earth
632:Alkali soil
622:Rhizosphere
617:Laimosphere
491:(1974–1998)
448:Inceptisols
355:Plinthosols
320:Kastanozems
59:concretions
52:pedogenesis
757:Stagnogley
707:Lunar soil
662:Dark earth
647:Brickearth
612:Pedosphere
582:Soil crust
390:Technosols
375:Solonchaks
295:Ferralsols
260:Anthrosols
185:2006-06-21
147:2006-06-21
106:References
742:Quicksand
687:Fill dirt
627:Bulk soil
473:Vertisols
463:Spodosols
453:Mollisols
443:Histosols
428:Aridisols
400:Vertisols
395:Umbrisols
385:Stagnosol
350:Planosols
345:Phaeozems
325:Leptosols
310:Gypsisols
300:Fluvisols
280:Chernozem
275:Cambisols
270:Calcisols
265:Arenosols
100:ironstone
63:ironstone
17:Plinthite
822:Pedology
816:Category
727:Paleosol
642:Blue goo
597:Gypcrust
468:Ultisols
438:Gelisols
433:Entisols
423:Andisols
418:Alfisols
380:Solonetz
370:Retisols
365:Regosols
340:Nitisols
335:Luvisols
330:Lixisols
315:Histosol
305:Gleysols
290:Durisols
285:Cryosols
255:Andosols
245:Acrisols
27:) is an
21:plinthos
677:Eluvium
637:Bay mud
602:Caliche
592:Hardpan
587:Claypan
577:Subsoil
572:Topsoil
458:Oxisols
360:Podzols
250:Alisols
238:(1998–)
66:hardpan
31:-rich,
787:Yedoma
722:Muskeg
41:quartz
767:Takir
702:Loess
141:(PDF)
126:(PDF)
56:redox
39:with
33:humus
25:brick
732:Peat
567:Loam
562:Clay
557:Silt
552:Sand
48:soil
37:clay
29:iron
717:Mud
818::
173:-
169:.
165:.
132:-
128:.
113:^
90:.
23:,
218:e
211:t
204:v
188:.
150:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.