Authors :
Raymond Ndumba Don; Eli-Achille Manwana Mfumukani; Bigman Mulongo Mandela; Joséphine Nkiku Kunga; Carlos Samuel Mbokama Mwana; Aubry Ndungi Khoto; Michael Mvumbi Bunga; Yannick Nsilulu Za Mafwefwe; Alfred Itumba Boliyonzo; Patrick Lakubu Esas
Volume/Issue :
Volume 9 - 2024, Issue 2 - February
Google Scholar :
http://tinyurl.com/3nxb3b35
Scribd :
http://tinyurl.com/mr2zv69x
DOI :
https://doi.org/10.5281/zenodo.10677738
Abstract :
This paper presents the use of satellite gravity
measurements as a tool for the study of the subsurface
structure of the province of Maniema, more precisely in
the territories of Punia and Lubutu. To do this, we
downloaded the satellite gravity data from the
WGM2012 model measured by the GRACE (Gravity
Recovery and Climate Experiment) satellites on the
International Gravimetric Bureau (BGI) platform. Then,
we applied the Bouguer correction which allowed us to
transform the free-air anomalies that we had into
Bouguer anomalies. Thanks to the Magmap extension of
the Oasis Montaj software, we were able to extract the
residual anomalies by applying a high-pass filter and
then calculated the vertical and horizontal gradients.
The high intensities of the anomalies throughout the
northern and eastern part are probably due to the
predominance of high-density granitic rocks while the
low intensities of the anomalies in the south are
associated with Ruzizian rocks which have a low density
compared to the mafic intrusions located at this location.
The rapid variations in the residual anomalies testify to
an intense shear zone caused by the different tectonic
episodes that this area has undergone. This type of
anomaly indicates the presence of geological structures
that may contain high density mineral substances such as
most of the metallic ore deposits found in this area. The
circular-shaped positive residual anomalies are also
caused by the presence of mafic intrusions (high density
substances) which are targets in mining exploration.
Following the superposition of mining occurrences on
our Bouguer anomaly map, we therefore noted that the
majority of mining occurrences are located in areas of
positive anomalies. The structural map produced at the
end of this study highlighted multiple faults which are of
significant mining interest and which will have to be the
subject of more detailed geological exploration with the
aim of discovering new mining deposits in this zone.
Keywords :
Satellite Gravity, Geological Exploration, Maniema, DR Congo.
This paper presents the use of satellite gravity
measurements as a tool for the study of the subsurface
structure of the province of Maniema, more precisely in
the territories of Punia and Lubutu. To do this, we
downloaded the satellite gravity data from the
WGM2012 model measured by the GRACE (Gravity
Recovery and Climate Experiment) satellites on the
International Gravimetric Bureau (BGI) platform. Then,
we applied the Bouguer correction which allowed us to
transform the free-air anomalies that we had into
Bouguer anomalies. Thanks to the Magmap extension of
the Oasis Montaj software, we were able to extract the
residual anomalies by applying a high-pass filter and
then calculated the vertical and horizontal gradients.
The high intensities of the anomalies throughout the
northern and eastern part are probably due to the
predominance of high-density granitic rocks while the
low intensities of the anomalies in the south are
associated with Ruzizian rocks which have a low density
compared to the mafic intrusions located at this location.
The rapid variations in the residual anomalies testify to
an intense shear zone caused by the different tectonic
episodes that this area has undergone. This type of
anomaly indicates the presence of geological structures
that may contain high density mineral substances such as
most of the metallic ore deposits found in this area. The
circular-shaped positive residual anomalies are also
caused by the presence of mafic intrusions (high density
substances) which are targets in mining exploration.
Following the superposition of mining occurrences on
our Bouguer anomaly map, we therefore noted that the
majority of mining occurrences are located in areas of
positive anomalies. The structural map produced at the
end of this study highlighted multiple faults which are of
significant mining interest and which will have to be the
subject of more detailed geological exploration with the
aim of discovering new mining deposits in this zone.
Keywords :
Satellite Gravity, Geological Exploration, Maniema, DR Congo.
