BY R. ETHERIDGE, JUN. 201 



With regard to the area occupied by these rocks, it is a con- 

 siderable one. Starting from Roebuck Bay on the west, a narrow- 

 band has been traced eastward to the mouth of the Fitzroy River 

 in King Sound, extending north-westwards to and beyond the 

 mouths of the May and Med a Rivers. Thence towards the south- 

 west the Pindan Sands and Gravels occupy the whole of the country 

 between the Fitzroy and Lennard Rivers as far as the Napier, 

 Oscar, and Prince Leopold Ranges, which are composed of 

 Carboniferous limestone and metamorphic rocks. Throughout 

 this area are dotted the remains of a Carboniferous formation — 

 the division (b) of the next paragraph — as isolated hills of sand- 

 stones, grits and conglomerates,"^ which apparently crop up 

 through the Pindan beds. 



(2) The Carboniferous Formation, as recognised by Mr. Hard- 

 man, occupies an immense area in the Kimberley district, and 

 consists of two subdivisions — (a) an upper or Sandstone Series, 

 and (6) a lower or Limestone Group. The former is a yellowish- 

 reddish freestone, and of it many of the most prominent mountain 

 ranges are formed, such as the Grant Ranges, the St. George 

 Ranges, and Mount Anderson. " It may reasonably be asserted 

 that this sandstone formation is considerably over 1000 feet in 

 thickness." Again, the author adds: "And although in great 

 part hidden by the newer deposits described above, it is certain 

 that it extends from near the sea-coast, as at Roebuck Bay, for a 

 distance of 190 miles into the interior. . . . Numerous 

 exposures of the sandstone rocks are seen to emerge from the 

 alluvial and pindan coverings." In the Lennard River area, Car_ 

 boniferous ])lants were found in these beds, but no marine fossils. f 

 On the contrary, on the Fitzroy River the sandstones proved very 

 fossiliferous, the organic remains, as listed by Mr. Hardman, 

 being characteristic Carboniferous Limestone species. J The 

 second subdivision (b), or Carboniferous Limestone in the 



* First Report, 1884, No. 31, map. 



t First Report, 1884, No. 31, p. 8. 



: Second Report, 1885,* No. 34, p. 16. 



