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Also available:
World English Dictionary
Dictionnaire Français
constructive margin
con·struc·tive mar·gin
(
plural
con·struc·tive mar·gins
)
noun
Definition:
tectonic plate boundary:
a boundary between two tectonic plates at which new crust is formed, e.g. the mid-ocean ridges
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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