Over the course of his career, he evolved from creating abstract gestural works, in which he drew inspiration from the natural world, to a pure form of abstraction. (artzine.com)
These are conceptual and site - specific installations and kinetic pieces; there are fully rendered figurative works and large gestural works in both temporary and permanent materials. (washingtonartassociation.org)
In an abrupt departure from the critically popular gestural work of Abstract Expressionism, Kelly pursued a highly finished art, one in which his refined canvases suggested not the hand of the artist, but rather the extracted forms of his observations of the physical world. (nortonsimon.org)