358 



the same rocks, outcrop with nearly horizontal attitudes. 

 These measures presumably also belong to the lower 

 division of the Millstone Grit. 



No further exposures occur along the river or the road 

 for some distance. About i mile (i-6 km.) beyond the 

 crossing of Mill Creek, the road swings away from the shore 

 of the river and runs on the side of a ridge sloping somewhat 

 steeply to the river. This ridge is presumably underlain 

 by the higher division of the Millstone Grit though no 

 rocks outcrop. 



On the shore opposite a point on the road about i mile 

 (i • 6 km.) south of the junction with a branch road leading 

 inland, exposures commence and continue to occur along 

 the shore to within a short distance of the mouth of Stony 

 creek. The most northerly exposures are of pale coloured 

 quartzose sandstones belonging to the upper division of the 

 Millstone Grit. The strata dip to the south at a very low 

 angle. Farther south the strata are horizontal and beyond 

 this, dip at very low angles to the north. Approaching 

 Stony creek, the quartzose conglomerate is brought to the 

 surface by reason of the gentle northward dip and in the 

 cliff faces along this part of the shore, the Millstone Grit 

 conglomerate may be seen to be underlain by about 30 

 feet (9 m.) of red argillite reposing on red conglomerate. 

 All the strata appear to be conformable and possibly 

 belong to the Millstone Grit group. The boundary between 

 the light coloured strata above and the red beds below, 

 crosses the shore road where the steep descent into the 

 valley of Stony Creek is commenced. This boundary line 

 approximately follows a contour line and swings up the 

 deep valley of Stony creek and returns towards the river 

 higher on the slopes of the ridge lying south of Stony creek. 

 The light coloured strata evidently lie on the northern 

 limb of a very low anticlinal fold or flattened dome. 



Where the shore road crosses Stony creek, there are, in 

 the steep south bank of the stream valley, exposures of 

 nearly horizontal, light coloured sandstones and con- 

 glomerates. Up the valley of Stony creek, these measures 

 are overlain by green and red banded argillites and argilla- 

 ceous limestone. 



South of the crossing of Stony creek, the shore road enters 

 what may be termed the Stony Creek oil and gas field. 

 The wells are scattered over the top and eastern face of 

 the high ridge fronting on the river. 



