THE KAMPA SYSTEM. 
rule, three prominent bands are noticeable, separated from one another 
by softer shaly beds. 
The most complete sections are found in the Kampa-Tatsang 
range, and extend from the Hemiaster shales to the highest beds of 
the Cretaceous system. One of the best of these is seen at the locality 
already mentioned, about 7 miles to the east of Kampa dzong, where 
most of the fossils found in the shales were obtained (see PI, 9, fig. i). 
Above the shales is a cliff of hard splintery limestone, about 150 feet 
high, overlain by dark shale with some thin bands of limestone, above 
this shale is a second limestone cliff of about the same heiarht as the 
first, and above this again are gentler slopes of thin flaggy and shaly 
limestone sloping up to the low cliffs which form the top of the scarp; 
these are overlain by more shaly and flaggy limestone, lying behind 
the edge of the scarp and dipping under a bed of gritty, ferruginous 
sandstone. 
A diagrammatic section is shown on PI. 2. The first or lowest 
limestone is a dark splintery rock with no deter- 
First scarp limestone. 
minable fossils. The overlying shales, with 
thin bands of limestone, are also practically unfossiliferous, having 
yielded only a few fragments of lameUibranch shells, including a 
small specimen of Gryphsea sp. 
Above the shale fossils begin to appear, and at a few feet above the 
e . ,, , base of the second limestone the rocks contain 
Second scarp limestone. 
numbers of small specimens of Orbitoides sp. : 
these gradually become more and more numerous, and up to the base 
of the ferruginous sandstone the presence of foraminifera of this type 
is an almost constant feature of the limestone bands. With them is 
associated a large variety of fossils, including chiefly Rudistos, 
echinoids and lamellibranchs. 
The Rudistx first make their appearance in the upper part of the 
second limestone, and this, as well as the overlying shaly limestone, is 
characterised by the presence of Radiolites sp. ; with these are many 
echmoids, as a rule represented only by internal casts and consequently 
quite undeterminable. 
( 164 ) 
