Don't forget magnetometry! It's pretty useful as well. Here in Kentucky, we try to use "all of the above" as an approach as often as we can, since they all have different strengths and weaknesses. It also depends on the specific equipment that you use for each of the approaches, the distance at which you take readings, the sensitivity of the antenna you have on your GPR - and all of that depends on the types of features you expect may be present, the depth at which they may occur, and the soils in which you are conducting the survey. There are some good references and suggested reads on Wiki, but there are many other references floating around on the web that will help spell out which is best for what.

https://en.wikipedia.org/wiki/Geophysical_survey_%28archaeology%29


-----Original Message-----
From: HISTORICAL ARCHAEOLOGY [mailto:[log in to unmask]] On Behalf Of stephanie cole
Sent: Friday, August 28, 2015 10:28 AM
To: [log in to unmask]
Subject: Resitivity vs GPR

 I know this may be an over broad question but does anyone have ideas on where I can look to research the differences between using  GPR and Resistivity when looking at sites that may have disturbances like grating for roads? Which may be more useful for identifying features on a Native American site? A bibliography or something? Thanks in advance for all your help and suggestions.
Stephanie Cole  M.A., RPA