14 
Geology and Physical Geography: 
° U Map SED °* 00 Lower Silurian. 
Blue slates, mudstones, claystones, coarse and fine 
tint Neufcral sandston es, grits, and quartzites, Sandhurst, Castlemaine, 
Ballarat, Inglewood, Maryborough, Beecliworth, and 
Crooked River districts; south-eastern portion of Gipps- 
land ; the head of the Murray, where limestone bands 
occur. 
Fossils. — Grapfolites ( Diplograpsus ) pahneus (Bar.)? 
Difhjmograpsus Headi (Hall) ; D. Thureaui (McCoy); 
V. quadribrachiatus (Hall); D. fruticosus (Ilall); D. 
octobrachiatus (Hall); D. bryonoidcs (Hall); V. Logani 
(Hall) ; D. extensus (Hall) ; j). caduceus (Salt) ; D . gracilis 
(Hall); Phylograptus folium, Cladograpsus, &c\, of various 
species. 
Crystalline (Azoic). 
(i) Metamorphic Stratified Rocks. 
(i) Light Purple. Metamorpliised Lower Silurian rocks, east of Beech- 
worth and at St aw el I ; Silky micaceous schists, mica 
schists, and gneiss of many varieties, passing from un- 
altered Silurian into metamorphic granite, Omeo, and 
Mitta Mitta districts; Chloritie talcose and micaceous 
schists and gneissose rocks, Upper Murray and River 
Glenelg. 
Igneous (Volcanic and Plutonic). 
(j) Newer Volcanic . 
(j) Pink. Ash, scoriae, felspathic lavas, basalt, Tower Hill, Mount 
Porndon, Western plains; Keilor, Werribee, and Smeaton 
plains; Sebastopol Plateau, Mounts Buninyong and War- 
renheip, Kyneton, and Malmsbury. 
(k) Older Volcanic. 
(k) Pink, barred. Decomposed basalt, with concentric layers enclosing 
nodules of hard, bluish-black basalt, Melbourne, Emerald 
Hill, Kangaroo Ground, Berwick, Buln Buln, Karracan, 
Cape Schanck, Phillip Island, Pentlnnd Hills, Russell's 
Creek, Tanjil, Bruthen Creek, Tarwin River, and Long- 
warre; Hard dense columnar basalt, Cape Schank, Dargo 
and Bogong High Plains, Gelantipy. 
(1) Trap . 
(l) Indian Red. Porphyry, greenstone, diorite, &c., Snowy River, Dan- 
denoDg Ranges, Mount Juliet, Dryden’s Rock. Mount 
Macedon, 
6 
(ill) Granite. 
(m) Carmine. East of Glenelg River, South of Stawell, Yowen Hill, 
Mount Korong, Terricks, Mount Alexander Range, Station 
Peak, Mount Eliza, Mount Martha, Strathbogie Ranges, 
sources of the River La Trobe, Beecliworth, Mount Baw 
Baw, Wilson’s Promontory, Cudgewa Creek. Tambo 
River, Genoa River; Syenite, Gabo Island. 
