147 
On one of tlie brandies of Cherry-tree Creet, flowing through Selection 1531, 
^ haked black shale is seen dipping E.S.E. at 85°, and what appears to be a volcanic 
weccia is visible close to the great mass of rock mapped as diorite, which occupies a 
•considerable area of country close to the St. Lawrence Eoad. 
In the bed of Cherry-tree Creek, about three-quarters of a mile north-east of 
house in Selection 1569, a mass of felsite has been protruded through reddish-brown 
iiales and conglomerates, spreading out over the surface of the conglomerate. Both 
16 Conglomerate and the underlying shales have been altered by the felsite. Higher 
the creek is a great thickness of conglomerate, very coarse-grained at the base but 
1161 ' above. In the upper portion of the conglomerate, much felspar, a little quartz, 
^iid Some iron pyrites have been developed in the mass. A dyke of felsite intersects 
6 conglomerate. Near the head of the creek an intrusive mass of granite forms the 
^utQinit of the range. 
Between Cherry-tree and Plum-tree Creeks the prevailing rocks consist of altered 
®‘ci'glomerates, and sandstones, in horizontal beds. A felsite dyke intersects the 
ratified rocks, in which, near the dyke, secondary crystals and crystalline grains of 
flUartz are developed. 
In Alligator Creek, one of the heads of Atherton’s Creek, a mass of sedimentary* 
IS, with a contemporaneous sheet of diorite, are pierced by protrusions of felsitic 
ns sketched in Plate 53, fig. 1. From the base of the felstone sheet to the top of 
got forming the summit of the range is two hundred and sixty feet. 
Ill Bell’s Creek, a branch of Atherton’s Creek, the section sketched in Plate 53, 
2 qo ^’. ®C6n. On a thick series of grits and shales which dip W.S.AV. at from 15° to 
> lies an intrusive (?) sheet of a porphyritic felsite. Above the felsite are greyish- 
6w shales and sandstones, one bed of shale being crowded with imp)erfectly preserved 
■I’omains. An intrusive boas of diorite is erupted through the sedimentary rocks 
g altering the shales into lydian-stone and the grits into quartzite. Above the 
■pi ■^''^“■ychow shale and sandstone are dark shales and grits, dipping to S.S.W. at 10°. 
Iliese rocks a sheet of felsite has been intruded along the planes of bedding, 
^i^h doubtless connected with a vertical dyke of a similar rock seen a little 
^6lsit^ tJie creek. About 1,000 feet above the lowest beds of the section a mass of 
the n oi" fourteen feet thick, has been intruded along the bedding planes of 
sii, sandstones. Above the felsite Jire shales and sandstones up to the 
of the range. 
^ gully, a tributary of Sandy Creek, behind Oakenden Plantation, a granitic 
Psnet similar in character to the granite of the Mount Bridgman Range, 
flUartzp^^* ®hales and sandstones, indurating the former and converting the latter into 
altepgd^^ creek parallel to the last and also running into Sandy Creek, shales and 
lutru • ‘lipping at 15° to S.W., are accompanied by sheets of basalt, apparently 
hasalt and stratified rocks both penetrated by a granitic dyke. 
fiUartz f Ilomebush Hill, altered shales and sandstones penetrated by a dyke of 
•^cnitn ^ occur. Eemains of reed-like plants and fragments of silicified wood are 
^•^ftion ' > 7 indistinct for determination. In a creek crossing the boundary of 
by g 1603, sandy shales, dij>ping at 20° to 25° to E.N.E., are interrupted 
^'^lly tl^^f°^ lolspar por])hyry. At Selection 1380, sandstones and shales are seen in a 
containing fragments of silicified wood and the latter plant-remains. 
'''•1th inf the branches of Cut Creek shows alternations of sandstones and shales 
^•'rizontal^v^'^^ tHorite; following up the gully until, due east of Mount McBride, a 
ced of altered conglomerate is seen. 
