subduction
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English[edit]
Etymology[edit]
From Latin subductio; see Latin sub, ductio.
Pronunciation[edit]
 (Received Pronunciation) IPA^{(key)}: /səbˈdʌkʃən/
Noun[edit]
subduction (countable and uncountable, plural subductions)
 The action of being pushed or drawn beneath another object.
 (geology) The process of one tectonic plate moving beneath another and sinking into the mantle at a convergent plate boundary.
 2000, KiHong Chang, SunOk Park, Soobum Chang, Upper Mesozoic unconformitybounded units of Korean Peninsula with Koguryo Magmatic Province, H. Okada, N. J. Mateer (editors), Cretaceous Environments of Asia, Elsevier, page 108,
 Therefore, both a mantle plume and also the subductions of the oceanic plates may have mutually contributed to create the magmatic zone.
 2003, Peter D. Clift, Hans Schouten, Amy E. Draut, A general model for arccontinent collision and subduction polarity reversal from Taiwan and the Irish Caledonides, Robert D. Larter, Philip T. Leat (editors), Intraoceanic Subduction Systems: Tectonic and Magmatic Processes, The Geological Society, page 91,
 Evidence for a subduction polarity flip is clear in the Irish Caledonides, where the Sdipping slab beneath the Lough Nafooey arc (Dewey & Ryan 1990; Clift & Ryan 1994) became a Ndipping subduction zone after the Grampian Orogeny.
 2012, Beth Shaw, Active Tectonics of the Hellenic Subduction Zone, Springer, page 61,
 Earthquakes on the subduction interface itself are lowangle thrusts in the depth range 15–45 km, generally reaching a maximum depth of 20 km in the west and 45 km in the centre of the arc, near Crete.
 2000, KiHong Chang, SunOk Park, Soobum Chang, Upper Mesozoic unconformitybounded units of Korean Peninsula with Koguryo Magmatic Province, H. Okada, N. J. Mateer (editors), Cretaceous Environments of Asia, Elsevier, page 108,
 The act of subducting or taking away.
 (Can we find and add a quotation of Bishop Hall to this entry?)
 Arithmetical subtraction.
 (Can we find and add a quotation of Sir M. Hale to this entry?)
 (mathematics, mathematical analysis) A surjection between diffeological spaces such that the target is identified as the pushforward of the source.
 2012, Konrad Waldorp, A construction of string 2group models using a transgressionregression technique, Clara L. Aldana, Maxim Braverman, Bruno Iochum, Carolina Neira Jiménez (editors), Analysis, Geometry, and Quantum Field Theory, American Mathematical Society, page 107,
 Accordingly, a diffeological principal S^{1}bundle over a diffeological space X is a subduction π : P → X and a smooth map τ satisfying the same conditions; see [30] for a thorough discussion.
 2013, Patrick IglesiasZemmour, Diffeology, American Mathematical Society, page 59,
 Subductions (art. 1.46) express a global behavior of some surjections. As we localized the notion of induction and then obtained the notion of local induction (art. 2.15), the notion of subduction can be localized, or refined, as well, and leads to the concept of local subduction. Exercise 61, p. 60, illustrates the case where a subduction is not everywhere a local subduction.
 2012, Konrad Waldorp, A construction of string 2group models using a transgressionregression technique, Clara L. Aldana, Maxim Braverman, Bruno Iochum, Carolina Neira Jiménez (editors), Analysis, Geometry, and Quantum Field Theory, American Mathematical Society, page 107,
Coordinate terms[edit]
Derived terms[edit]
Related terms[edit]
Translations[edit]
process of one tectonic plate being pushed beneath another


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 English terms derived from the PIE root *dewk
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 English 3syllable words
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 English uncountable nouns
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