30 
E. DE C. Clarke and C. Teichert. 
bleached xonos as much as 10 ein. wide. Bleached spherical spots of any- 
thing lip to Li or d cm. diainetei' may also appear anywliere in the reddish 
sandstone. 
As regai'ds the cross-bedding, the inipi'ession was in general that the 
prevailing dip was in a westerly direction. We had not time to get sufficient 
data for a thorough statistical analysis, but about 50 measurements in the 
vicinity oi iMurchison House Homestead suggest that the source of the sedi- 
ments, at least in this locality was a p])roximately from the E.S.E. The 
di[) of th(‘ cross-bedding rarely exccaals about 20° 
Towards the top the cross-bedded sandstones change gradually into well 
bedded, more shaly sandstones (text lig. 9.) The transition is very gradual: 
At first a few horizontally bedded sandstone layers are intercalated between 
strongly cross-bedd(al strata; then the hoiizontally bedded layers become 
thick(‘r and more numerous and freqmmtly shaly, and cross-bedding becoines 
sul)(jrdinate ; also the red colour becomes less prominent, the horizontally 
Text Fig. 9. 
Well-bedded sandstones above Xats Flat (marked on Plate I.) 
forming the top part of the Tumblagooda Sandstone. 
