Time, Cratons, and Voyageurs NP
Time, Cratons, and Voyageurs NP
Time, Cratons, and Voyageurs NP
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Unconformities• NosinglelocationonEarth’ssurfacehasbeenasiteofuninterrupteddepositionthroughoutallofEarth’shistory.Instead,interruptions<strong>and</strong>episodesoferosionhaveproduced“gaps”intherockrecord,oftenofsignificantduration.• Thesegapsarerecognizablebytheunconformitiestheyproduced.Suchrecognitionisnecessaryforproperinterpretationofevents.• Consequently,inordertopiecetogetherasmuchofEarth’shistoryaspossible,evidencefrommanylocationsmustbecompared<strong>and</strong>correlated.