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Melvil Decimal System: 551.7909

Wording: Mathematics and Science > Earth sciences & geology > Physical and Dynamic Geology > Historical geology > Quaternary; Postpliocene; Glacial > Not set > Not set

Dewmoji: đŸ”Ŧ > 🌎 > 🌋 > ? > ? > ? > ?

0
Information
179,064
ℹī¸
1
Philosophy and Psychology
167,145
💭
2
Religion
436,901
🙏đŸŊ
3
Social Sciences
912,661
đŸ‘Ģ
4
Language
121,346
đŸ’Ŧ
5
Mathematics and Science
288,882
đŸ”Ŧ
6
Technology
666,318
💡
7
Arts and Recreation
658,667
🎨
8
Literature
877,170
📚
9
Biography and History
559,529
đŸ—ŋ
50
General Science
23,427
đŸ”Ŧ
51
Mathematics
55,021
➗
52
Astronomy
16,002
🌌
53
Physics
28,638
🍎
54
Chemistry
17,604
⚗
55
Earth sciences & geology
25,681
🌎
56
Fossils & prehistoric life
6,132
💀
57
Life Sciences
39,321
🐠
58
Botany
16,168
đŸŒŋ
59
Zoology
60,888
đŸŧ
550
Geology
2,810
🌎
551
Physical and Dynamic Geology
17,385
🌋
552
Lithology; Petrography
1,256
🤘
553
Economic Geology
1,834
💲
554
Europe
336
🐗
555
Asia
91
🐅
556
Africa
70
🐘
557
North America
1,505
558
South America
27
559
Pacific, Oceania, and other planets
367
🐨
551.0
235
551.1
Structure of the earth as a whole
475
551.2
Seismology
1,440
551.3
Erosion and deposition
880
551.4
Surface features of the earth
5,397
551.5
Meteorology; Climate
3,604
☁ī¸
551.6
Metamorphism
1,987
551.7
Historical geology
857
551.8
Structural geology
330
551.9
Agents of geologic work
175
551.70
56
551.71
Archean
39
551.72
Primary, Paleozoic, Cambrian
20
551.73
Silurian
9
551.74
Devonian; Old red sandstone
7
551.75
Carboniferous
13
551.76
Secondary, mesozoic, Triassic and Jurassic: lias, oolite
3
551.77
Cretaceous
9
551.78
Tertiary, Cenozoic
23
551.79
Quaternary; Postpliocene; Glacial
100
551.790
23
551.791551.792
42
551.793
2
551.794551.795551.796551.797551.798551.799
551.7900551.7901551.7902551.7903551.7904551.7905551.7906551.7907551.7908
1
551.7909
20
551.79090551.79091551.79092551.79093551.79094
8
551.79095
3
551.79096
1
551.79097
5
551.79098
2
551.79099
1

Wording

1922 Edition
Modern language
Emoji

"Far Friends"

MDS classes with significant recommendations overlap, excluding ones under the same top-level class.

None

What is MDS?

Melvil stands for "Melvil Decimal System," named after Melvil Dewey, the famous librarian. Melvil Dewey invented his Dewey Decimal System in 1876, and early versions of his system are in the public domain.

More recent editions of his system are in copyright, and the name "Dewey," "Dewey Decimal," "Dewey Decimal Classification" and "DDC" are registered trademarked by OCLC, who publish periodic revisions.

LibraryThing's MDS system is based on the classification work of libraries around the world, whose assignments are not copyrightable. MDS "scheduldes" (the words that describe the numbers) are user-added, and based on public domain editions of the system.

The Melvil Decimal System is NOT the Dewey Decimal System of today. Wordings, which are entered by members, can only come from public domain sources. The base system is the Free Decimal System, a public domain classification created by John Mark Ockerbloom. Where useful or necessary, wording comes from the 1922 edition of the Dewey Decimal System. Language and concepts may be changed to fit modern tastes, or to better describe books cataloged. Wordings may not come from in-copyright sources.

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