GEOLOGIC INTERPRETATION
OF GRAVITY ANOMALIES
OVER THE BAGUIO MINERAL DISTRICT
C. H. Dimalanta
National Institute of Geological Sciences
University of the Philippines
Diliman, Quezon City
ABSTRACT
A reconnaissance ground gravity survey
was conducted in the Baguio Mineral
District (BMD) as a follow-up to the
previously conducted magnetic survey
over the same area. It served to verify
the results obtained from the magnetic
survey.
Gravity highs were attributed to the
presence of intrusive bodies and igneous
rock units. Gravity highs were also
found to be associated with
metamorphosed rocks. Areas underlain
predominantly by sedimentary units
registered low gravity values.
A striking result from the gravity
investigation of the BMD is the belt of
gravity highs, located within the
central southern portion of the BMD,
that defines an anomalous zone. This
anomalous zone coincides with the
anomalous zone delineated earlier by the
magnetic method. It also agrees with the
north- trending prospective zone of
mineralization defined by Fernandez and
Damasco (1979).
Geological
Society of the Philippines
Unit
250, 2nd Floor, Cityland Pioneer, 128
Pioneer Street, Mandaluyong City, Philippines