obduction
English
editEtymology
editLatin obductio; see Latin ob, ductio.
Noun
editobduction (countable and uncountable, plural obductions)
- (obsolete) The act of drawing or laying over, as a covering.
- (largely obsolete) An autopsy.
- (geology) The overthrusting of continental crust by oceanic crust or rocks from the mantle, such that the oceanic crust is thrust onto the continental crust, as occurs at a convergent plate boundary when the continental crust is caught in a subduction zone.
- 2004, Gérard M. Stampfli, Gilles D. Borel, “Chapter 3: The TRANSMED Transects in Space and Time”, in William Cavazza, François M. Roure, Wim Spakman, Gérard M. Stampfli, Peter A. Ziegler, editors, The TRANSMED Atlas: The Mediterranean Region from Crust to Mantle, Springer, page 73:
- Around Arabia - as well as in the Himalayas - these obductions completely obliterated the Neotethyan ocean, which in this time frame is represented only by a few exotic blocks and by Permo-Triassic pelagic sediments found at the sole of the Cretaceous ophiolites.
- 2011, Wolfgang Frisch, Martin Meschede, Ronald C. Blakey, Plate Tectonics: Continental Drift and Mountain Building, Springer, page 72:
- These frictional forces slowed the obduction of the ophiolite onto the continental margin and obduction ceased after the nappe was transported 100–200 km.
- 2012, Joseph A. DiPietro, Landscape Evolution in the United States, →ISBN, page 340:
- Ongoing accretion at a subduction zone, and the obduction of intact ophiolite slabs, are not considered to be collision.
Coordinate terms
editRelated terms
editReferences
edit- “obduction”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.