( ( As ( India ( was ( too ( buoyant ( to ( ( sink ( -LRB- ( ( be subducted ) -RRB- ) ) ) ( into ( the ( denser mantle ) ) ) ) ) ) ) ) ) ) ( , ( it ( ( collided ( with ( the ( Asian Plate ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN As) (S (NP (NNP India)) (VP (VBD was) (ADJP (RB too) (JJ buoyant) (S (VP (TO to) (VP (VB sink) (PRN (-LRB- -LRB-) (S (VP (VB be) (VP (VBN subducted)))) (-RRB- -RRB-)) (PP (IN into) (NP (DT the) (NN denser) (NN mantle)))))))))) (, ,) (NP (PRP it)) (VP (VBD collided) (PP (IN with) (NP (DT the) (NNP Asian) (NNP Plate)))) (. .)))
As India was too buoyant to sink (be subducted) into the denser mantle, it collided with the Asian Plate.
(ROOT (S (NP (NNS Earthquakes)) (VP (VBP mark) (NP (NP (DT the) (NNS motions)) (PP (IN of) (NP (NP (VBG colliding) (NNS plates)) (CC and) (NP (NP (DT the) (NNS locations)) (SBAR (WHADVP (WRB where)) (S (NP (NNS plates)) (VP (VBP plunge) (PP (IN into) (NP (DT the) (NN mantle))))))))))) (. .)))