Gravimetric Survey

Gravimetric Survey

 

the set of measurements of the quantities characterizing the gravitational field of a particular region. It also includes the determination of the positions of gravimetric points. A gravimetric survey is conducted using gravimeters, pendulum instruments, and torsion balances.

Depending on their purpose, gravimetric surveys are subdivided into general and detailed types. A general gravimetric survey is used in studying the figure of the earth and the general geological structure of large regions; a detailed survey is used to determine individual geological structures, ore bodies, and deflections of the vertical. Depending on the nature of the distribution of the points, gravimetric surveys are divided into area and profile types (the latter is a survey of points lying along a line). Gravimetric maps, which portray the anomalous part of the earth’s gravitational field, are constructed on the basis of the data from gravimetric surveys.

References in periodicals archive ?
Gravimetric Survey on the Bench Marks of the Levelling Line
In spring 2007, we performed a relative gravimetric survey to determine gravitational acceleration in 45 bench marks of the levelling line.
The relative gravimetric survey was performed using the relative Scintrex CG-3M gravity meter, No.
Data Processing and Accuracy Estimate of the Gravimetric Survey
An extensive till sampling program (525 samples collected) and a high definition airborne EM and Falcon gravimetric survey were completed on the ICE Claims in 2001.
The Company has commissioned a detailed gravimetric survey of the Round Top project area and it is expected that the combination of the gravimetric survey with the aerometric survey will better define drill targets both for additional masses of mineralized rhyolite and for possible limestone-fluorite-rare earth minerals replacement mineralization in the favorable limestone at depth.
Favorable results drives decision to commission close-spaced gravimetric survey to assist in identifying new exploration targets
Because the results of the magnetic survey are so favorable, we have commissioned a close spaced gravimetric survey of the area to even further define geologic structure and to guide in additional exploration drilling beyond our current program.
Waseco plans immediate exploration work consisting initially of an airborne radiometric and gravimetric survey followed by ground mapping and drilling of the targets outlined above plus any new targets identified from the airborne survey.
This should be followed by geophysical surveys, with airborne magnetic and electromagnetic survey, if available and / or ground geophysics, including the two areas and a gravimetric survey of the target areas and the surrounding area.
The data base includes - but is not limited to - low altitude magnetic surveys of the entire region, local gravimetric surveys, bedrock surface sampling by pneumatic drilling, geologic mapping, cross sections of previous mining areas, and mine records.
Geophysical work will include both induced polarization (IP) and gravimetric surveys and will test a large area with no rock outcrop peripheral to outcropping mineralization that is thought to have excellent potential for additional replacement-style mineralization and/or stratiform massive sulphide lenses.