There are people on here that are far better placed at identifying wood than me and I am sure they will come along in time. If you could take close up photos as well as the ones from a distance but also end grain photos it will help identify the wood.
I did work in a yacht building company for 3.5 years and Teak was used extensively on some yachts (decking, doors, handrails, outdoor lockers etc, and was a prominant feature on others. Teak is nice to work so will finish well through a planer is is also oily when worked so if you run your fingers across it after you plane it you should be able to pick up the oily feel, because of the oil in teak the sandpaper in an orbital sander will clog even hand sanding will clog the paper very quickly. Teak also has a distinctive smell unlike other hardwoods, we used asetone to clean the joints before gluing.
Mark