Standard MDing vs Modified GPR

[Atticus Finch]

I've mentioned this before years ago, but it haunts me. The average MD simply has limited depth capacity.
Everything I've read documents that so much treasure and archaeology is two to three feet and more beneath the surface. Even under the shifting sands of beaches where the bedrock might be three feet down, there must be tons of treasure.

In the movie Apollo 13 they jerryrig the capsule to rebreath for three in an effort to get back safely to earth.

With computers and all the cutting edge technology one would think a new breed of MDs/GPR machines would be available even at a high cost to address the depth and ID issues.

 

[Sandman]

I don't think ground penatrating radar is up to the task yet for locating smaller items that most metal detectors find. If someone comes up with one I wonder if we will ever learn about it before he finds it all. Also how deep do you wanna dig for a pull tab??

 

[Atticus Finch]

I don't think ground penatrating radar is up to the task yet for locating smaller items that most metal detectors find. If someone comes up with one I wonder if we will ever learn about it before he finds it all. Also how deep do you wanna dig for a pull tab??

Pretend I am dumber than I am.

I want to get to gold coins four and five feet deep in sand...I mean...IF one had a detector that could ID them?

 

[FloridaBill]

I don't think ground penatrating radar is up to the task yet for locating smaller items that most metal detectors find. If someone comes up with one I wonder if we will ever learn about it before he finds it all. Also how deep do you wanna dig for a pull tab??

Pretend I am dumber than I am.

I want to get to gold coins four and five feet deep in sand...I mean...IF one had a detector that could ID them?

And how do you plan on digging that deep? And after you spend two hour digging a 5' hole to find it's a pull tab? It is bad enough now when I dig 1 1/2' down and find junk...

 

[1491]

Discrimination is the problem. I guy in our local San Diego club gave a presentation on GPR and showed us some imagery of a coin buried at 5 feet! It showed up very well, but the image was blob-like and was indistinguishable from a rock at the same depth. These things see based on object and substrate density, so unless you are looking for larger, buried objects, like foundations, it will be difficult to distinguish small stones from coins, etc.