GeologyRocks

Hiya,

Well, I've started revising for geology exams. A recurring sticking point that I have is trying to put 2D information into a 3D model in my head, whether it's examples of subduction zones, a local structural cross section, or 2D exposures in the field.

Those nice line drawing models of 2D cuts through, the Tay nappe for example, look great to break up the text, but they seem to be quite, sort of, random. I think I'm having trouble seeing how geologists can go to an area, map a few exposures, then link everything up into a regional picture. I have the feeling that if you could sit down with the author and point at bits of their diagram, and say "why have you put that bit there?", you'd get quite a few "urms" and "(sigh) well...."!

To be honest, it's probably above the level that I'm expected to know anyway. I just have to extract the main points and move on. But I think that good structural geologists/sedimentologists amongst others, must have a shared trait with sculptors, architects and other 3D artists in being able to visualise well.

My last point is that from my experience there is a large potential for geology students to increase their understanding of a subject based on 3D by having access to computer models and exercises. A scrollable, zoomable 3D map, with the ability to cut segments, for example. Although, I suppose in order to have these, you'd need to have the geology pretty well tied down in the first place, which doesn't really happen that much, it seems, judging from all the question marks placed all over most cross sections.

What do you think?

Sorry for the ramble/rant - good study break though!