Re: How do a geologist interpret seismic?
Clarkekm,
You made a good point there. Seismic interpretation requires apart from understanding of geophysics and geology just practice. Go out there and have a go at following markers, interpeting fault (and figuring out the structural style). Look at reflectors dimming, truncations and seismic character and try to find a geological story to support it. Remember that the seismic signal is just a representation of acoustic impedance contrast as recorded after the wave has traveled through hundreds of meters of unknown subsurface territory. A lot can happen along this path and processing can also add a lot of artifacts.
I believe most interpreters with a geology background try to explain any interesting feature they see to through geology, while hardcore geophysicist often try to explain it through processing or seismic acquisition artifacts. To get you started I think the quote "Consider everything to be geological until proven otherwise" is a safe way to go, but do familiarize yourself with the artifacts than can result from processing, acquisition and ray path refraction.