Report of the State Mineralogist, 11. izdajaState Office, 1893 |
Iz vsebine knjige
Zadetki 1–5 od 90
Stran 26
... town of Shasta . The ridge between the falls and the Oak Run road is formed of volcanic breccia . The Chico shales form an extensive valley for many miles along Oak Run , terminating about 3 miles southwest of Morley Post Office . They ...
... town of Shasta . The ridge between the falls and the Oak Run road is formed of volcanic breccia . The Chico shales form an extensive valley for many miles along Oak Run , terminating about 3 miles southwest of Morley Post Office . They ...
Stran 42
... town , once sustained by the placers , but now entirely gone to decay . One mile east of Horse- town , on the north side of Clear Creek , is an outcrop of the Metamorphic Series . It consists of fine , cleavable , and highly altered ...
... town , once sustained by the placers , but now entirely gone to decay . One mile east of Horse- town , on the north side of Clear Creek , is an outcrop of the Metamorphic Series . It consists of fine , cleavable , and highly altered ...
Stran 52
... town , on the Cotton- wood and its branches . The granite appears about a mile west of Ono , and extends in a northeasterly direction , appearing 3 miles away on the road to Igo . The Horsetown beds terminate in coarse conglomerates ...
... town , on the Cotton- wood and its branches . The granite appears about a mile west of Ono , and extends in a northeasterly direction , appearing 3 miles away on the road to Igo . The Horsetown beds terminate in coarse conglomerates ...
Stran 59
... town and extends in a southeasterly direction between the Cretaceous and the older series . It extends into , and forms the divide west of , Bear Valley . On the head of Little Stony Creek the metamorphics are highly altered ...
... town and extends in a southeasterly direction between the Cretaceous and the older series . It extends into , and forms the divide west of , Bear Valley . On the head of Little Stony Creek the metamorphics are highly altered ...
Stran 64
... town in the vicinity of the quicksilver mines . rocks exposed along the road which leads up to the Great Western Mine belong to the older series , and are considerably metamorphosed . Glau- cophane schists , banded quartzose rocks , and ...
... town in the vicinity of the quicksilver mines . rocks exposed along the road which leads up to the Great Western Mine belong to the older series , and are considerably metamorphosed . Glau- cophane schists , banded quartzose rocks , and ...
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20 feet angle argillites average bedrock beds belt Blue clay bored bowlders cañon cement cent channel chloritic coal coarse contains copper cost country rock County Creek Cretaceous crushed deposits depth diabase dikes diorite distance district drift east extends farther feet deep feet in length feet long feldspar felsite fissure flowing foot wall Fork formation fossils free gold grade granite Grass Valley gravel ground Gulch hanging wall hills hoisting hornblende hydraulic inches iron land lava ledge limestone lode metamorphic metamorphic rocks mill mineral mountains Nevada City northeast northwest obtained outcrop patent Pelton wheel places porphyry portion present pump quartz ranch ridge river road rock sand sandstone schists seams serpentine shaft shales shoot shows side silver situated slate slope southeast southwest springs stoped strata stratum stream strike sulphurets sunk supply surface syenite thickness timber tufa tunnel Valley vein width