Simulation of Weathered Layers in a Granite Massif Based on Geophysics Survey

Author(s):  
M. G. Brito ◽  
J. Q. Rogado
Keyword(s):  
Author(s):  
E. Kh. Turutanov ◽  
◽  
B. Buyantogtokh ◽  
B. Tengis ◽  
◽  
...  

Geoheritage ◽  
2016 ◽  
Vol 9 (2) ◽  
pp. 141-151 ◽  
Author(s):  
Manuel García-Rodríguez ◽  
Enrique Fernández-Escalante

1961 ◽  
Vol S7-III (2) ◽  
pp. 152-155 ◽  
Author(s):  
Jean Boissonnas ◽  
M. Gravelle

Abstract The Tihoiiarene granite massif is a crescent-shaped body on the northeastern margin of a large syntectonic massif of porphyritic granite in the Ahaggar mountains, Algeria. The contact of the Tihoiiarene massif with epimetamorphic Precambrian formations is typically intrusive, but its contact with the porphyritic granite is blurred in places, clear-cut in others, thus providing no evidence of chronologic relationships. Similar cases are known elsewhere; possibly there is a direct relation between the migmatitic (or anatectic) and intrusive granites, the latter grading into subvolcanic plutons.


Author(s):  
J. V. Ramsden

Research into the history of the old mines suggests that two mineralized fissuring systems intersect in central Devon, often carrying commercial ore-bodies. The older of these is the east-west system usually carrying copper, iron, or tin, which has been extensively worked in west Devon, but is less developed on the eastern flank of the Dartmoor granite massif.The younger north-south series, characterized by its lead and silver ores and baryte is particularly well developed in the Teign valley. This band of mineralization can be traced from the north of Scotland through Brittany and Spain to Algeria. In Devon it appears to be divided into three main fissure bands:1.Combe Martin to Plymouth.2.North Molton to Spreyton, with a possible extension south of the Dartmoor granite.3.Molland to Newton St. Cyres and the Teign valley.


2011 ◽  
Vol 52 (12) ◽  
pp. 1563-1573 ◽  
Author(s):  
D.L. Konopelko ◽  
Yu S. Biske ◽  
K. Kullerud ◽  
R. Seltmann ◽  
F.K. Divaev

Author(s):  
M. M. Kostenko ◽  
P. A. Kondratenko

The article shows the Verba ore mineralization of molybdenum (Volyn Block of the Ukrainian Shield) is associated with small granite intrusions. They are located in the south-eastern exocontact zone of the Ustynivka granite massif of the Paleoproterozoic Chisinau complex. The Verba minera­lization is a linear-coarse mineralized zone of the complex structure. This is confirmed by the development in its rocks of frequent, non-orientated veins of quartz, fluorite-quartz and carbonate-quartz compositions and numerous cracks. They have molybdenite and concomitant mineralization, as well as the wide spreading of molybdenite inclusions directly in the granites. A number of differently oriented faults and of small fracturing local zones, cataclasite, millonitized and breccias represents the internal structure of the mineralized zone. The characteristic of molybdenite the leading ore minerals is shown. It is morphologically represented by a closely connected scattered inclusions, rarely veined inclusions, and associated ore minerals: cassiterite, bismuth, native bismuth, emlectocytes, galena, sphalerite, chalcopyrite, pyrite, ilmenite, magnetite and titanomagnetite.


1943 ◽  
Vol S5-XIII (1-3) ◽  
pp. 105-112 ◽  
Author(s):  
P. Lapadu-Hargues

Abstract Describes the various crystalline facies of the zone of schists and gneisses in the Marvejols region, France, bordered on the north by the Margeride granite massif and to the east and south by Mesozoic karst terrain, and briefly discusses the structure of the region.


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