20:
95:. Lamination is often regarded as planar structures one centimetre or less in thickness, whereas bedding layers are greater than one centimetre. However, structures from several millimetres to many centimetres have been described as laminae. A single sedimentary rock can have both laminae and beds.
130:
Lamination can occur as parallel structures (parallel lamination) or in different sets that make an angle with each other (cross-lamination). It can occur in many different types of sedimentary rock, from coarse
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Lamination consists of small differences in the type of sediment that occur throughout the rock. They are caused by cyclic changes in the supply of sediment. These changes can occur in
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Lamination in sandstone is often formed in a coastal environment, where wave energy causes a separation between grains of different sizes.
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Lamination develops in fine grained sediment when fine grained particles settle, which can only happen in quiet water. Examples of
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27:. In this case the layering was caused by seasonal differences in sediment supply. This rock was part of the
154:(the activity of burrowing organisms) shortly after deposition. Lamination therefore survives better under
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content and often result in pronounced differences in colour between the laminae.
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rate was high and the sediment was buried before bioturbation could occur.
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environments (in glacier lakes) are a special case. They are called
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Because lamination is a small structure, it is easily destroyed by
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71: 'thin layer') is a small-scale sequence of fine layers (
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91:. Laminae are normally smaller and less pronounced than
322:, W.H. Freeman & company, New York (3rd ed.),
268:This definition can for example be found in Blatt
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320:Petrology, Igneous, Sedimentary, and Metamorphic
186:creates cyclic differences in sediment supply.
342:Principles of Sedimentology and Stratigraphy
213:during the last few hundred thousand years.
127:can make the differences even more clear.
312:Blatt, H.; Tracy, R.J. & Owens, B.E.
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43:and was most probably derived from the
16:Thin layers present in sedimentary rock
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174:are deep marine (at the seafloor) or
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344:, Merrill Publishing Company,
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178:(at the bottom of a lake), or
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1:
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7:
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158:circumstances, or when the
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236:Liesegang rings (geology)
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23:Lamination in a piece of
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172:sedimentary environments
65:
48:
47:area in the vicinity.
22:
299:Boggs (1987), p 142
290:Boggs (1987), p 141
281:Boggs (1987), p 138
231:Foliation (geology)
201:varves are used in
189:Laminae formed in
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328:978-0-7167-3743-8
207:palaeoclimatology
89:sedimentary rocks
87:) that occurs in
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191:glaciolacustrine
117:organic material
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211:climate changes
209:to reconstruct
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29:Roman aqueduct
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366:Sedimentology
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350:0-675-20487-9
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272:(2006), p 271
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160:sedimentation
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203:stratigraphy
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182:, where the
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152:bioturbation
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111:percentage,
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84:
76:
64:
56:
50:
119:content or
113:microfossil
99:Description
306:Literature
252:References
241:Speleothem
199:Quaternary
176:lacustrine
145:evaporites
125:Weathering
105:grain size
59:(from
57:lamination
37:Montauroux
25:travertine
141:mudstones
133:sandstone
115:content,
360:Category
220:See also
180:mudflats
135:to fine
246:Stratum
121:mineral
93:bedding
77:laminae
53:geology
348:
326:
270:et al.
195:varves
166:Origin
156:anoxic
143:or in
137:shales
85:lamina
67:lāmina
41:Fréjus
257:Notes
63:
61:Latin
45:karst
346:ISBN
338:1987
324:ISBN
316:2006
205:and
184:tide
109:clay
33:Mons
81:sg.
73:pl.
51:In
31:of
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340::
336:;
318::
314:;
197:.
147:.
139:,
107:,
83::
79:;
75::
55:,
352:.
330:.
39:–
35:/
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