( It ( ( ( ( is ( ( the source ) ( of ( ( ( mantle fluids ) , ) ( ( the ( driving force ) ) ( for ( all ( tectonic processes ) ) ) ) ) ) ) ) and ) ( strongly ( affects ( ( the ( physical properties ) ) ( of ( the ( mantle ( , ( eg ( vapour ( pressure ( , ( ( density and ) rheology ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VP (VBZ is) (NP (NP (DT the) (NN source)) (PP (IN of) (NP (NP (JJ mantle) (NNS fluids)) (, ,) (NP (NP (DT the) (VBG driving) (NN force)) (PP (IN for) (NP (DT all) (JJ tectonic) (NNS processes)))))))) (CC and) (VP (ADVP (RB strongly)) (VBZ affects) (NP (NP (DT the) (JJ physical) (NNS properties)) (PP (IN of) (NP (DT the) (JJ mantle) (, ,) (JJ eg) (NN vapour) (NN pressure) (, ,) (NN density) (CC and) (NN rheology)))))) (. .)))
It is the source of mantle fluids, the driving force for all tectonic processes and strongly affects the physical properties of the mantle, eg vapour pressure, density and rheology.
(ROOT (S (NP (NNP Depth) (CC and) (NNP density)) (VP (VBP are) (NP (NP (DT the) (CD two) (NNS factors)) (SBAR (WHNP (WDT that)) (S (VP (VBP affect) (NP (NP (DT the) (NN pressure)) (PP (IN of) (NP (NNS fluids))))))))) (. .)))