Hydrology of South Africa; Or, Details of the Former Hydrographic Condition of the Cape of Good Hope, And of Causes of Its Present Aridity, With Suggestions of Appropriate Remedies for This Aridity
The book Hydrology of South Africa; Or, Details of the Former Hydrographic Condition of the Cape of Good Hope, And of Causes of Its Present Aridity, With Suggestions of Appropriate Remedies for This Aridity was written by author Brown, John Croumbie Here you can read free online of Hydrology of South Africa; Or, Details of the Former Hydrographic Condition of the Cape of Good Hope, And of Causes of Its Present Aridity, With Suggestions of Appropriate Remedies for This Aridity book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Hydrology of South Africa; Or, Details of the Former Hydrographic Condition of the Cape of Good Hope, And of Causes of Its Present Aridity, With Suggestions of Appropriate Remedies for This Aridity a good or bad book?
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In the Newcastle coal-field there is a famous slip, called the ninety a 146 HYDBOLOGY OF SOUTH AFRICA. fathom hitch, the deviation from the line of stratification being no less than 450 feet. The coal-fields of Fife and Clackmannan abound in such disloca- tions, several of them throwing the strata from 400 to 1200 feet up or down, as the case may be, from the general position." All of these speak of upheaval ; and such dykes are not awanting in South Africa, in accordance with the hypothesis in... question. Dr Kubidge, in a paper written shortly before his death, maintains that " The elevated lands, whether mountains, hills, or chains of hummocks (locally called ' Koppies'), have generally dykes of igneous rock for their axes, and these run in straight lines through the country for miles, some of them, perhaps, for hundreds of miles ;" and I may remark, in passing, such igneous rocks manifest much greater power of resisting the erosive action of water cur- rents than do Silurian and Devonian deposits ; and thus may they, when they projected above or beyond masses of these, have diverted the flow, and thus to some extent determined the direction and the contour of the valley created by the process of denudation.
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