scholarly journals Nonlinear 3-D inversion of gravity data over a sulfide ore body

2000 ◽  
Vol 39 (2) ◽  
pp. 179-188
Author(s):  
J. García Abdeslem
Keyword(s):  
Ore Body ◽  

El gradiente gravimétrico horizontal y el principio de superposición de campos potenciales son utilizados en la interpretación de los datos gravimétricos de un yacimiento de sulfuros mediante una estructura 3-D de densidades. El yacimiento está constituido por sulfuros masivos y diseminados, principalmente de esfalerita, alojados en caliza. El gradiente horizontal de la anomalía gravimétrica permitió inferir en forma aproximada la extensión lateral del yacimiento. La interpretación de los datos gravimétricos se propone como un problema inverso que se realiza en forma iterativa, siguiendo un criterio de mínimos cuadrados con amortiguamiento. El modelado inverso está acotado con valores de densidades y espesor del yacimiento, obtenidos a partir de un pozo perforado sobre la zona mineralizada.

Geophysics ◽  
1945 ◽  
Vol 10 (1) ◽  
pp. 50-62 ◽  
Author(s):  
Sigmund Hammer

The interpretation of the results of gravitational prospecting surveys is considered, from a theoretical point of view, in terms of the magnitude of the causative mass as distinct from the conventional interpretation in terms of the mass distribution (size, shape and depth). A general proof is given, based on Gauss’ Theorem in potential theory, that the former problem is unique and the uniqueness is illustrated by an analytical example which also serves to demonstrate the well‐known lack of uniqueness of the latter problem. Practical formulae are presented for estimating the total mass directly from the gravity data and the precision of the mass estimate is considered. The method is applied to a practical gravimeter survey over a known chromite ore body and the estimated mass is found to be in excellent agreement with estimates from core drilling.


2012 ◽  
Vol 524-527 ◽  
pp. 140-143
Author(s):  
Xiang Wei ◽  
Wen Gao Zhang ◽  
Xing Ke Yang ◽  
Hu Jun He

There are significant hiatus between Devonian Wutong and Carboniferous Huanglong formation in Xinqiao mining area of Tongling. The two formations have very different lithology, Wutong formation is mainly continental clastic sediments, while Huanglong formation is carbonate rocks. The unconformity interface between Devonian Wutong formation and Carboniferous Huanglong formation is structural weak part, favors the aggregation of ore-forming elements. Magmatism mineralization forms significant industrial value layered massive sulfide ore body and structural weak part is as a major seam position.


2019 ◽  
Author(s):  
S. Soodmand Niri ◽  
S. Vatankhah ◽  
V. Ebrahimzadeh Ardestani ◽  
R. Anne Renaut

2019 ◽  
Vol 8 ◽  
pp. 14-20
Author(s):  
A.Yu. Cheban ◽  
◽  
G.A. Kursakin ◽  
S.I. Korneeva ◽  
A.A. Fatkulin ◽  
...  
Keyword(s):  

1993 ◽  
Author(s):  
R.F. Sikora ◽  
V.E. Langenheim ◽  
Shawn Biehler ◽  
L.A. Beyer ◽  
R.H. Chapman
Keyword(s):  

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