I was just browsing through the binder with colored illustrations we received at the Geo Seminar. I wish I could scan some of these and post them here on the board. One interesting slide is titled "Fluid Flow Environments & Au" and names 3 depths for gold deposition formation. They are;

Epizonal: Deposit formed at 1-5km depth

Mesozonal: Deposit formed at 5-10km depth

Hypozonal: Deposit formed at 10-20km depth.

Now things change over time, in our area erosion and Plate Tectonics would have the main effect on our deposit/s. These deposits get shifted around a bit over time at depth but stay pretty much in whatever structure that supported them vertically. Over time if you have multiple hydrofluid events, this gold can be remelted and deposited higher in the verticle structure it resides in. These type of systems can be very large and very high grade gold. This type of system would fit well with the Andean geological structures and IMO fits with one of these systems being near the Incan Gold source. Lori sometimes says in our nr,s that the source of the Incan Gold has never been found . This phrase might just be put there for mystique, but maybe not. I can,t help but think of the multi ounce globs found in the pinch and swell A-4 vein. This would seem suggestive to me that something big and deep slowly regurgitated that gold to the surface. And if 16 ounce globs were spewed up, how big is the original glob that these came from? The source had to be richer than the nuggets formed, the nuggets were only bits and pieces of something richer, IMO.

Each of the Zones listed above may have slightly different characteristics and I feel the top 2 could apply to the Tesoro. It would depend on the thickness of the earths crust in that area and the hydrofluid flow. But, nevertheless it could be all 3 as well as just being the top one. I think the Tesoro only applying to the top one is ruled out because of the chemical composition of the A-4 vein. Chlorite is the element that says that to me. The dykes and pegmatic material should also speak for their selves, they are fault material that was melted at great depths and pushed to the surface. Evidence of plate tectonics, and we know now that the plate was pushed in under the Andes and melted off, then brought close to the surface up in the Andes by hydrothermal fluids.

For me, all these clues that I speak of, make a picture that I can apply to the Tesoro. It may appear as a fabrication to some, but to me, I beleive it.