Possible Results:
estaba solidificando
Imperfect progressive yo conjugation of solidificar.
estaba solidificando
Imperfect progressive él/ella/usted conjugation of solidificar.

solidificar

Este enfriamiento, bastante brusco, provocó tensión y contracción interior en el flujo de la lava que se estaba solidificando.
Rather rapid cooling caused intensive strain and contraction of the solidifying lava flow.
Presumiblemente se formaron cuando el núcleo y el manto se enfriaron y contrajeron al tiempo que la corteza se estaba solidificando.
It is thought that these were formed as Mercury's core and mantle cooled and contracted at a time when the crust had already solidified.
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