( ( ( Other ( igneous rocks ) ) ( including ( felsic dykes ) ) ) ( ( are ( discussed later ) ) . ) )
(ROOT (S (NP (NP (JJ Other) (NNS igneous) (NNS rocks)) (PP (VBG including) (NP (JJ felsic) (NNS dykes)))) (VP (VBP are) (VP (VBN discussed) (ADVP (RB later)))) (. .)))
Other igneous rocks including felsic dykes are discussed later .
(ROOT (S (NP (JJ Felsic) (NNS igneous) (NNS rocks)) (VP (VP (VBP contain) (NP (JJ felsic) (NNS minerals))) (, ,) (VP (ADVP (RB typically)) (VBP contain) (NP (NN aluminum) (CC and) (NN sodium))) (CC and) (VP (VBP are) (ADJP (JJ high) (PP (IN in) (NP (NN silica)))))) (. .)))
Felsic igneous rocks contain felsic minerals, typically contain aluminum and sodium and are high in silica.