( ( Argon ( that ( was ( dissolved ( in ( ( ( the magma ) and ) that ) ) ) ) ) ) ( ( may ( have ( originated ( ( ( from ( ( the mantle ) ( of ( the Earth ) ) ) ) or ) ( by ( outgassing ( of ( ( old ( K-bearing minerals ) ) ( of ( the ( crust 2 ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Argon)) (SBAR (WHNP (WDT that)) (S (VP (VBD was) (VP (VBN dissolved) (PP (IN in) (NP (NP (DT the) (NN magma)) (CC and) (NP (DT that))))))))) (VP (MD may) (VP (VB have) (VP (VBN originated) (PP (PP (IN from) (NP (NP (DT the) (NN mantle)) (PP (IN of) (NP (DT the) (NN Earth))))) (CC or) (PP (IN by) (S (VP (VBG outgassing) (PP (IN of) (NP (NP (JJ old) (JJ K-bearing) (NNS minerals)) (PP (IN of) (NP (DT the) (NN crust) (CD 2)))))))))))) (. .)))
Argon that was dissolved in the magma and that may  have originated from the mantle of the Earth or by outgassing of old K-bearing minerals of the crust 2.
(ROOT (S (NP (NNP Magma)) (VP (VBZ comes) (PP (IN toward) (NP (NP (NN earth) (POS 's)) (NN crust))) (PP (IN through) (NP (JJ mantle) (NNS plumes)))) (. .)))