......|||| Web Mail | Extranet |
Flag | Flag
 
Back to Home

CONTACT US
Logemin S.A. Bogotá Colombia Consultoría

Logemin S.A. Head Office - Bogotá

Colombia, South America
Cl 127A No. 53A-28, off.309
(+57 1) 6435364
info(at)logemin.com
 
   
   
   
     
   
 
 

Proterozoic A-Type granitoids and volcanic rocks that make the basement to the Central African Copperbelt, Zambia

Granitoides y rocas volcánicas tipo A que componen el basamento proterozóico del Cinturón Cuprífero Centroafricano (Copperbelt), Zambia

Author: Alberto Lobo-Guerrero S.

Download complete PDF file of abstract here >
Download complete PDF file of presentation here >
Related documents on A-type granites and IOCG mineralization in Carajas, Brazil >
Related documents on Quartz pods and their association with IOCG deposits >
Related documents on IOCG mineralization in the Greater Lufilian Arc >
Related documents on granitoids in the Greater Lufilian Arc, Zambia >
Other downloadable documents related to economic geology >

Other downloadable documents related to geochemistry >

Home Articles & Publications Reference Logemin S.A.

 

 

 

 


OVERVIEW
1. Zambian Copperbelt basement composed by several generations of Proterozoic A-type porphyritic rocks & associated volcanics.
2. Most granitoids display rapakivi features.
3. Plutonics & volcanics show similar age & chemistry.
4. Clearly an anorogenic ring complex cluster
-with 4 distinct overprinted Proterozoic ARCC events.
5. Main rock types include: granites, alkali granites, qtzmonzonites & gabbroids.
6. Complex geological history, alteration, metamorphism.
7. Possible relationships between basement rks, IOCG mnzn & sed-hosted Cu mnzn.
8. Basement hosts hypogene Cu mnzn veins & disseminations.
9. Macroscopic correlation of rock types is tricky, due to similar rock suites from different ages.

Key-words: Anorogenic, anorogenic rock, A-Type granite, cobalt, copper, Copperbelt, Democratic Republic of Congo, gabbroid, granitoid, Nchanga Granite, rapakivi, ring complex, schist, stratiform, volcanic, Zambia

RESUMEN
1. El basamento del Cinturón Cuprífero Centroafricano se compone de varias generaciones de rocas porfiríticas y volcánicas de tipo A.
2. La mayor parte de los granitoides muestra características rapakivi.
3. Las rocas plutónicas y volcánicas muestran química y edad semejante.
4. Clara evidencia de ser un grupo de complejos anulares anorogénicos
-con cuatro diferentes eventos GCAA proterozóicos sobreimpuestos.
5. Los principales tipos de roca incluyen: granito, granito alkalino, cuarzomonzonita y gabroides.
6. Complejidad en historia geológica, alteración hidrotermal y metamorfimo.
7. Posible relación entre rocas del basamento, mineralización tipo OHCO y mineralización estrato-confinada de cobre.
8. El basamento aloja mineralizacion hipógena de cobre en forma de vetas y diseminaciones.
9. Es difícil hacer correlación macroscópica de los tipos de roca, debido a que existen grupos de rocas similares con edades diferentes.

Palabras-clave: Africa, Anorogénico, Cinturón Cuprífero Centro-Africano, cobalto, cobre, cobre estrato-confinado, complejo anular, Copperbelt, esquisto, gabroide, granito Nchanga, granito tipo A, granitoide, rapakivi, República Democrática del Congo, rocas anorogénicas, volcánic, Zambia.

 
 
  Download complete PDF file of abstract here >
Download complete PDF file of presentation here >
Related documents on A-type granites and IOCG mineralization in Carajas, Brazil >
Related documents on Quartz pods and their association with IOCG deposits >
Related documents on IOCG mineralization in the Greater Lufilian Arc >
Related documents on granitoids in the Greater Lufilian Arc, Zambia >
Other downloadable documents related to economic geology >

Other downloadable documents related to geochemistry >
 
View all the available publications in PDF (*)
 
LOGEMIN S.A. · COMPANÍA MINERA · Copyright © 2007-2008 · All rights reserved NLGS · Bogotá, Colombia · South America · London, United Kindom · Europe ...