Often referred to as Abstract Expressionism, these paintings are characterized by large and often bold brushstrokes and paint is applied in a rapid outpouring of emotion and energy.
Abstract art is an expression that does not attempt to represent external reality, but seeks to achieve its effect through the language of shape, form, color and texture.
This composition exists with a degree of independence from visual references in the world, and is often referred to as non objective or non representational art.
Many people do not feel comfortable with abstract expressionism because of this lack of precise reflection of external reality. Artists like Jackson Pollock, Willem de Kooning, Franz Kline, and Mark Rothko represent this style.