Small metabasite bodies are found related to the rocks of the Arquia Complex along the limits between the Central and Western cordilleras of the Colombian Andes. The body, located near Barragan, Departamento del Valle, contains troctolite gabbros, where the texture and mineralogy of the original igneous rock is conserved, as well as partially amphibolitizised gabbros, garnetiferous metagabbros and eclogites. With the textural and mineralogical changes, regular geochemical changes are observed: MgO decreases from 24% to 11% while CaO and Na 2 0 increases from 7% to 11% and from 2% to 3% respectively; furthermore, the content of some trace elements like Sr, Y, Nb, Zr, and Sc increases while Ni and Cr decrease from the troctolitic gabbro to the eclogite and the amphibolitizised gabbro shows disperse values near those of tre troctolitic gabbro. These geochemical variations are inherent to the differences in the protolith: a fractionated qabbro that varies from olivinic to clinopiroxenic. Some metasomatic effects were observed, but they do not modify the general tendency of the mayor elements. Petrographic and chemical changes in the mineral phases are the result of sinmetamorphic fluid circulation probably combined with deformation by shearing, conserving the protolith texture and chemistry when the fluid circulation and/or shearing were not significant. On the contrary, when both events were effective, the formation of eclogite ocurred. Later, the entire body underwent a retrogressive amphibolitic stage under greenshist facies conditions, responsible for the formation of amphibolitized gabbro and for the retrogression of the eclogite.