5 Ergebnisse.

Keine Beschreibung.

Excerpt from The Banket: A Study of the Auriferous Conglomerates of the Witwatersrand and the Associated RocksThe object of this brief introduction is to enable the reader to take a general view of the conditions under which gold occurs in South Africa, and to appreciate references which are made in later chapters.The Auriferous Region of South Africa is con tamed almost entirely {within the borders of the Transvaal and Southern Rhodesia. In t...

Excerpt from The Banket: A Study of the Auriferous Conglomerates of the Witwatersrand and the Associated Rocks The metamorphic rocks occur in narrow, irregular belts ¿anked by wide areas of granite. They are generally highly folded and dip at steep angles, their strike conforming more or less to the edges of the belts. The granite is mainly the biotite variety, though muscovite and hornblende are occasionally present. Frequently, and more es...

Keine Beschreibung.

Keine Beschreibung.