( ( These minerals ) ( ( are ( ( the ( primary constituents ) ) ( of ( ( basalt , ) ( ( a ( dark ( volcanic rock ) ) ) ( that ( also ( ( makes up ) ( ( ( ( the ( Earth 's ) ) ( oceanic crust ) ) and ) ( the ( lunar maria ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT These) (NNS minerals)) (VP (VBP are) (NP (NP (DT the) (JJ primary) (NNS constituents)) (PP (IN of) (NP (NP (NN basalt)) (, ,) (NP (NP (DT a) (JJ dark) (JJ volcanic) (NN rock)) (SBAR (WHNP (WDT that)) (S (ADVP (RB also)) (VP (VBZ makes) (PRT (RP up)) (NP (NP (NP (DT the) (NN Earth) (POS 's)) (JJ oceanic) (NN crust)) (CC and) (NP (DT the) (NN lunar) (NN maria))))))))))) (. .)))
These minerals are the primary constituents of basalt, a dark volcanic rock that also makes up the Earth's oceanic crust and the lunar maria.
(ROOT (S (NP (NNP Gabbro)) (VP (VBZ is) (NP (NP (DT a) (JJ dark) (JJ dense) (NN rock)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB be) (VP (VBN found) (PP (IN in) (NP (DT the) (JJ oceanic) (NN crust)))))))))) (. .)))
Gabbro is a dark dense rock that can be found in the oceanic crust.