CORRELATION OF UPPER PAL/EOZOIC SYSTEMS. 5^ 
Kanaur (Lipak river), upper 
and lower Spiti (Losar and 
Po) 
Pin valley, southern 
and central Spiti 
PERMIAN 
** Productus 
shales " 
Black shales with 
Xenaspis and Cyclolobus 
above, and 
Margintfera htmalayen- 
sis below 
Black shales with 
Xennspis and Cyclolo- 
bt<s above, and 
Margmifera hima- 
I ay en sis below 
Calcareous sandstone with 
Spirifer fasciger, 
Spirifer marcout, etc. 
Calcareous sandstone 
with 
Spirifer fasciger, 
Spirifer marcoui, etc. 
Grit, quartzite and conglo- 
merate. 
CARBONIFEROUS 
(?) Upper 
" Po 
series " 
Quartzite and shale 
(" Fenestella shales ") 
Unconformity 
OS 
Quartzite and shale, with 
Culm plants 
Lowe 
" Lipak 
series " 
Limestone and thin bands 
of shale with 
Syringothyris cuspidata, 
Productus cora, etc. 
Grey limestone, with 
Syringothyris ctispi' 
data 
(?) DEVONIAN 
Shaly limestone, with 
(?) Streptorhynchus urn- 
braculum 
(?) Atrypa aspera 
Flaggy limestone and 
sandstone 
( 59 1 
