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Data sets Publications Expeditions Thesaurus
media  search
USEmaterials
median masses  search
SNAs of 1981, no longer a valid term for GeoRef. See tectonics; orogenic belts.
Median Tectonic Line  search
BTAsia
 .Far East
 ..Japan
 ...Median Tectonic Line
RTtectonics
 plate tectonics
 Honshu
 Kyushu
 Shikoku
SNSouthwest Japan.
median valley  search
UFvalley, median
RTrift zones
 rifting
 mid-ocean ridges
 Mid-Atlantic Ridge