Pseudostatic Spontaneous Potential (PSP)
Pseudostatic spontaneous potential is the ideal spontaneous potential (SP) that would be observed opposite a shaly, permeable bed if the SP currents were prevented from flowing. In other conditions, however, the SP reads close to the pseudostatic spontaneous potential (PSP). Spontaneous potential (SP) refers to the natural electrical potential difference that arises in geologic al formations, primarily due to the movement of ions and differences in salinity between fluids.

