( ( Carbonate minerals ) ( ( ( are often ) ( found ( in ( areas ( where ( ( ancient seas ) ( once ( covered ( the land ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Carbonate) (NNS minerals)) (VP (VBP are) (ADVP (RB often)) (VP (VBN found) (PP (IN in) (NP (NP (NNS areas)) (SBAR (WHADVP (WRB where)) (S (NP (JJ ancient) (NNS seas)) (ADVP (RB once)) (VP (VBD covered) (NP (DT the) (NN land))))))))) (. .)))
Carbonate minerals are often found in areas where ancient seas once covered the land.
(ROOT (S (NP (JJ Carbonate) (NNS minerals)) (VP (VBP are) (ADVP (RB often)) (VP (VBN found) (SBAR (WHADVP (WRB where)) (S (NP (NNS seas)) (ADVP (RB once)) (VP (VBD covered) (NP (DT the) (NN land))))))) (. .)))