PHYSIOGRAPHY 3 
Fralled „la zonda“ is thundering on nearly the whole year. This 
wind is cold and dry and originated probably by a great, permanent 
& minimum, extending over the pampean plain further eastward. 
j The summits of the Umango Mountains are never snow clad. 
É Ey the giants outside the area, reaching up to more than 6,000 
om, such as the volcan Cerro Bonete on the Puna-edge and the 
eae de Famatina, carry a white cap. The snowfall here is more 
x 
abundant during the summer than the dry wintertime. 
+ 
eql*A Sep 
We 
Zhe 
R Camaroons Te 
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o RTıgte 
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ZEHN: 
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RR 
s.L’Salto Guaira So, ie eS TREE Jp NA Mae SEE Ne OS 
SR SO Tropic * oF "Capricorn 
ER 
a SIE lan EU I Tevet 
i Sea Merges 
inet 
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(Oman. 
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a a AS TASTE oe 
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a “Bile fros hte Pista 6 
m "Tand ENGLISH MILES 
aan 
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N de SN > . : © 100 200 300 400 500 cn 
ÄR SS ss ifs jes A é Ves > cs "2 Blanca none 3 
Fig. 1. Key Map. 
@ The Sierra de Umango Area. 
A peculiar scenery of these deserts are the heavy skyfalls in the 
moist season, the so called „crecientes“. When such an outburst 
Pos eee 
HX 
Er 
: occurs on a mountain slope, all the dry „quebradas“ or gorges are 
4 filled by rushing streams, loaded with boulders and gravels, sand 
4 and mud, cutting through old piedmont deposits, filling preexistent 
Ki 
channels and forming new ones in the broad alluvial fans, radiating 
4 
3 
R 
