The Marble node is a procedural texture that can be used to create marble-like noise. It is similar to a turbulence texture but more fine-tuned to create marble-like patterns.
Power - Controls the texture's overall brightness.
Offset - Sets the texture position in 3D space.
Omega - Controls detail in the underlying fractal pattern.
Variance - Randomizes the Marble pattern.
Transform - Accepts a Transform node. Positions, rotates, and scales the texture.
Projection - Accepts a Projection node. If nothing is connected to this input, the texture uses the surface's first UV set.