Geology Reference
In-Depth Information
Fig. 3 Region II karst landform
(fenglin karst in Guangxi by Zhu
Xuewen)
Fig. 4 Region II karst landform
(Gorge karst in Chongqing by
Chen Weihai)
cap-shaped karst landform with relief less than 800 m ASL)
(Yuan 1993 ) (Fig. 5 ).
Qinling Mt. to the west. It is located in a humid-semi-humid
temperate climatic zone with average annual temperature of
2
700 mm. This
region is located in the Songliao block and the North China
platform with Caledonian and Yanshan fold belts. Various
types of carbonate rocks underlie the region and they range
in age from Archaean to Cenozoic, though mainly Cambrian
to Ordovician and part of the Proterozoic Sinian period.
Their thickness is some 2,031 m at most, but with scattered
distribution. This region has the most complete and well-
12
°
C and annual precipitation of 500
-
-
3.4
Humid-Semi-Humid Temperate Karst
Landform Region (IV)
The humid-semihumid temperate karst landform region is
located to the north of Region III and borders the Great
Xing
anling Mt., to Yan Mt., Daqin Mt.-Lvliang Mt. and
'
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