Reviews — Geological Survey of Western Australia. 469 



most of the settled country by the end of the present year, when 

 he proposes to issue a geological map of the Colony, filling in such 

 information concerning the interior as can be gained from the reports 

 and maps of explorers. This will be a most valuable basis for 

 further work, and especially useful to others interested in the subject. 

 In the present Eeport we find an historical account of the work 

 of the previous observers, and detailed summaries of the observations 

 made by the author, during his first two years of office. What will 

 be most interesting to our readers is the general account given of 

 the rocks at present known in Western Australia, and these are 

 tabulated as follows : — 



Sedimentary Eocks. 



' s^> f Recent (Holo- 



g | ceiie). 



a | Pleistocene. 





I < 



.3 r 



a < 



Pliocene. 

 Eocene. 



Cretaceous. 

 Jurassic. 



Carboniferous. 



Devonian. 



Silurian and 

 Metaniorphic. 



Archaean (Meta- 

 niorphic). 



Alluvium, River Gravels and Estuarine depo- 

 sits, Sand Dunes, Raised Beaches, etc. 



Ancient River Gravels, etc. 



Lower Estuarine deposits, shelly limestones and 

 sandstones of the coast. 



Ferruginous sandstones and variegated clays. 

 Coralline and chalky limestones with flints, 



calcareous and ferruginous sandstones and 



grits. 



Chalky limestones with flints, sand, ferruginous 

 sandstones and limestones, ferruginous no- 

 dular clay-stones, sands, clays and mudstones. 



Oolites.— Oolitic limestone, clay ironstone, fer- 

 ruginous sandstone, grits and conglomerates. 



lias. — Ferruginous and variegated limestones, 

 clays and ironstones. 



Sandstones, grits, conglomerates and ironstone, 

 limestones, mudstones, micaceous clays and 

 shales, with iron-pyrites, gypsum, and coal- 

 seams. 



Shales, indurated slates, limestones, coarse 

 grits, and conglomerates. 



Clay-slate, limestones, marble, dolomite, sand- 

 stones, quartzites, and conglomerates. 



Slates, schists, serpentine, quartzite, gneiss, 

 granitoid, and garnet rocks. 



Volcanic. 

 Plutonic. 



Igneous Eocks. 



Basalt, Dolerite. 

 f Felstone, diorite (greenstone), syenite, granite. 

 ( porphyry, amygdaloid. 



This is a goodly list of formations, while the sequence of strata 

 and their striking correspondence in general lithological character 

 with some of the European equivalents, is remarkable. It is stated 

 that the next Annual Eeport will, if possible, contain a list of the 

 fossils of the country. 



The presence of Jurassic and Cretaceous rocks was first made 

 known by Mr. F. T. Gregory in 1861, and large additions to our 

 knowledge of the Oolitic and Liassic fossils were published by 



