6 
DARLIMURLA. 
Iu order to test the area near Darlimurla, where the coal-bearing sandstones outcropped, two bores 
were put down. 
No. 1, after passing through— 
224ft. lOin. sandstones, 
24ft. 5in. clays, 
entered basaltic rock, passing through 71ft. llin. of the latter on to soft sandstone ; after piercing 16ft. lOin. 
of the latter the bore was abandoned. 
I he occurrence of the broken basalt and clays underlying the sandstones can only be accounted for 
by supposing— 
1st. That the basalt represents a volcanic dyke ; or 
2nd. That there is here a reversed fault. 
The geological examinations of the locality lends support to the latter view. The features are 
accordingly represented as such on the accompanying section. 
No. 2 bore, at a higher level to the west— 
Passed through 23ft. 6in. sandy clay and coarse drift, 
„ 176ft. 9in. basalt and basaltic clays, 
„ 213ft. 9in. sandstones (Mesozoic), 
without cutting any seams of coal. 
MURRAY’S CREEK. 
An outcrop of coal having been observed in a small gully running easterly into Murray’s Creek, a 
tributary of the Little Morwell River, two bores were put down to test the area. 
No. 1 bore, on spur to west of the creek— 
Cut 3 inches coal at 310 feet. 
„ 1ft. 8in. „ 325 feet. 
„ 2 inches „ 366ft. lOin. 
„ 1 foot „ 429 feet. 
The bore was carried to a depth of 1,137ft. 2in. 
No. 2 bore, about 30 chains north-east from No. 1 bore— 
Passed through 10 feet clay and ironstone boulders. 
„ 20 feet decomposed sandstone. (?) 
„ 34ft. lin. basaltic clay, ironstone, and basalt. 
„ 18ft. 4in. conglomerate. (?) 
„ 72ft. 8in. basaltic clays, ironstone, and basalt. 
„ Oft. llin. clay and soft sandstone. (?) 
„ 61ft. lOin. basalt and red clays into the Mesozoic sandstones. 
At 405ft. 4in. from surface cut 3 inches of coal. 
„ 584ft. Sin. „ „ 6 „ „ 
„ 601ft. Sin. „ „ 10 „ „ 
This bore was carried to a depth of 1,000ft. 4in. 
The information supplied by these, bores proves a considerable extent of faulting alone Murray’s 
Creek. ° b J 
Notes on the Fault Lines. 
The data afforded by the borings afford additional evidence of the extent and magnitude of the 
faultings in several of the southern valleys of the Latrobe River. Not alone in the Little Morwell and 
Morwell valleys, but in the Narracan and other tributaries to the west. The wholo of the steep spurs 
which rise abruptly from the Latrobe valley on the south represent an original fault scarp with transverse 
fault lines approximating to the course of the existing southern affluents. I have already drawn attention 
to the importance of studying the nature and extent of such fault lines in the coal-mining districts and of the 
relations between the present topography and those dynamic movements which gave rise to the subsequent 
valley erosion along lines of faulting.* A recent observer, Mr. Jas. H. Wright, of Darlimurla has in an 
interesting description of some “Geological features in an area in South Gippsland,” given valuable data 
as to the extent and character of the fault lines he had observed in portions of this district t ft is evident 
that the dynamic movements producing the faultings took place after the accumulation of a considerable 
portion of the tertiary deposits of ferruginous conglomerates, grits, clays, and deposits of brown coal, resting 
on the older basalt of the district, and, as stated by Mr. Wright, in most cases the lines of faulting cross 
the direction of the dip approximately at right angles, are marked by valleys running iu that direction 
forming the drainage basins of the district. That they spring from a common source, viz., the western 
edge of what is a wide area of subsidence, viz., the Latrobe valley and Moe River valley.f And also 
that such faulting occurred in Post Miocene times. 
Tertiary. 
Hie tertiary deposits within the area shown on the accompanying map, and disclosed in the boring 
operations, will be found to afford a clue to the order in which such accumulations have taken place over a 
large area in South Gippsland, so that a co-relation of the deposits over widely separated areas in the 
Latrobe valley may be established. 
The following are characteristic features :— 
Eocene. (?) 
Resting directly on the abraded surface of the Mesozoic shales and sandstones are silicious con¬ 
glomerates and quartzites with subo rdinate lenticular-shaped beds of shale, compact indurated claystono, 
Pro^^ero™ 1 : Yif of “ areain South GippsIand ’ GcoIogical Sur ™y 
*1 
