
TY  - JOUR
A1  - Martinez, Cericia 
A1  - Li, Yaoguo 
A1  - Krahenbuhl, Richard 
A1  - Antonio Braga, Marco 
T1  - Structurally constrained lithology characterization using magnetic and gravity gradient data over an iron ore formation
JF  - ASEG Extended Abstracts
JO  - ASEG Extended Abstracts
Y1  - 2012
VL  - 2012
IS  - 1
SP  - 1
EP  - 4
KW  - 
UR  - https://doi.org/10.1071/ASEG2012AB211 
N2  - It is often desirable to extract meaningful lithologic information directly from geophysical data. Here, we describe a multi-faceted approach that combines the known geologic sections of a site from borehole data with recovered density and magnetic susceptibility distributions from 3D inversion of airborne gravity gradient and magnetic data. The technique can produce end-member solutions based on average property values extracted from literature and well records; or, it can be implemented using the geologic sections to extract an appropriate range of property values to address the model smoothing common to modern 3D generalized inversions. To demonstrate our approach, we present results utilizing magnetic and gravity gradient data over part of the Gandarela Syncline iron formation in the Quadrilátero Ferrífero, Brazil. 
ER  -

