, ▁United ▁States . ▁ ▁Due ▁to ▁top ographic ▁changes ▁caused ▁by ▁the ▁ 1 8 1 1 – 1 2 ▁New ▁Madrid ▁earth qu akes , ▁part ▁of ▁what ▁is ▁now ▁Ti pton ▁County ▁was ▁cut ▁off ▁the ▁state ▁of ▁Tennessee ▁by ▁a ▁change ▁in ▁the ▁course ▁of ▁the ▁Mississippi ▁River . ▁The ▁earth qu ake ▁changed ▁the ▁course ▁of ▁the ▁Mississippi ▁River , ▁placing ▁the ▁communities ▁of ▁Cor ona ▁and ▁Re ver ie ▁on ▁the ▁Ark ansas ▁side ▁of ▁the ▁river , ▁while ▁most ▁of ▁the ▁area ▁of ▁Ti pton ▁County ▁is ▁located ▁east ▁of ▁the ▁Mississippi ▁River , ▁on ▁the ▁Tennessee ▁side . ▁ ▁History ▁▁ 1 8 1 1 ▁and ▁ 1 8 1 2 ▁earth qu akes ▁ ▁In ▁ 1 8 1 1 ▁and ▁ 1 8 1 2 , ▁several ▁earth qu akes ▁spread ing ▁out ▁from ▁the ▁New ▁Madrid ▁Se ism ic ▁Zone ▁caused ▁a ▁t ect onic ▁shift ▁which ▁changed ▁the ▁course ▁of ▁the ▁Mississippi ▁River . ▁ ▁The ▁earth qu akes ▁cut ▁off ▁several ▁me and ers ▁( or ▁horses ho e ▁b end ) ▁of ▁the ▁Mississippi ▁River ▁along ▁the ▁western ▁boundary ▁of ▁what ▁is ▁now ▁Ti pton ▁County , ▁Tennessee , ▁placing ▁the ▁settlement s ▁of ▁Re ver ie ▁and ▁Cor ona ▁west ▁of ▁the ▁Mississippi ▁River . ▁Re ver ie ▁is ▁fully ▁surrounded ▁by ▁Mississippi ▁County , ▁Ark ansas , ▁while ▁Cor ona ▁is ▁surrounded ▁by ▁both ▁Mississippi ▁and ▁C ritt enden ▁Count ies . ▁ ▁Tennessee / Ar k