( ( Movement ( along ( this plane ) ) ) ( ( ( ( has ( ( fractured ( the rocks ) ) above ) ) and ) ( ( milled ( the rock ) ) ( to ( ( ( a clay ) - ) ( ( rich vein ) ( we ( call ( fault gouge ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Movement)) (PP (IN along) (NP (DT this) (NN plane)))) (VP (VP (VBZ has) (VP (VBD fractured) (NP (DT the) (NNS rocks)) (PP (IN above)))) (CC and) (VP (VBD milled) (NP (DT the) (NN rock)) (PP (TO to) (NP (NP (DT a) (NN clay)) (: -) (NP (NP (JJ rich) (NN vein)) (SBAR (S (NP (PRP we)) (VP (VBP call) (NP (NN fault) (NN gouge)))))))))) (. .)))
Movement along this plane has fractured the rocks above and milled the rock to a clay- rich vein we call fault gouge.
(ROOT (S (NP (DT A) (NN fault)) (VP (VBZ is) (NP (NP (DT the) (NN fracture)) (VP (VBN caused) (SBAR (WHADVP (WRB when)) (S (NP (NP (NNS rocks)) (PP (IN on) (NP (DT both) (NNS sides)))) (VP (VBP move))))))) (. .)))