Patent ID: 7403858

Claim:
A method for detecting an occurrence zone of a mantle substance diapir finger comprising the steps of: conducting geological observations in geographic regions banked up by diapirs of an abnormal mantle; determining candidate places of a location of the mantle substance finger in the earth's crust; determining a corresponding ratio of 3 He/ 4 He on the order of 10 −5 from gases sampled from sources at the candidate places, thereby determining the presence of silicides at a small depth as physical parameters for the location of the mantle substance diapir finger in the earth's crust; establishing the presence of high semiconductor conductivity, locality and activity of magnetic anomalies and anomalies of gravity field at the candidate places; and determining the occurrence zone from the occurrence depth of the silicides using the high semiconductor conductivity, locality and activity of magnetic anomalies, and anomalies of the gravity field.