The Marble procedural node is similar to the Turbulence texture, but it's fine-tuned to create marble-like noise patterns.
Figure 1: A typical network setup for using the Marble texture node
Power - Controls the texture's overall brightness.
Offset - Sets the texture position in 3D space.
Octaves - Adjusts the scale of detail in the noise.
Omega - Controls detail in the underlying fractal pattern.
Variance - Randomizes the Marble pattern.
Transform Input - Positions, scales, and rotates the surface texture.
Projection Input - Sets how the texture projects onto the surface.