. Factory and industrial management . a river that has long been known to be exceed-ingly rich in gold. This river, which seems to be of comparatively recent origin, hasits source in the heart of Antioquia, near the city of Medellin, anddrains northwardly, between the two ranges of the Cordilleras, througha distance of about 175 miles, to its junction with the Nechi. Througha good portion of this length it is fed by mountain streams and tor-rents that have cut their way, in deep canons, across the flanks of theCordilleras, and that bring into the valley, with their detritus, goldfrom innumerab
. Factory and industrial management . a river that has long been known to be exceed-ingly rich in gold. This river, which seems to be of comparatively recent origin, hasits source in the heart of Antioquia, near the city of Medellin, anddrains northwardly, between the two ranges of the Cordilleras, througha distance of about 175 miles, to its junction with the Nechi. Througha good portion of this length it is fed by mountain streams and tor-rents that have cut their way, in deep canons, across the flanks of theCordilleras, and that bring into the valley, with their detritus, goldfrom innumerable veins. As a consequence, the river has, for oversixty-five miles, an almost uninterrupted series of gravel bars, or flats,exceedingly rich in gold. So rich, indeed, are some of these barsthat much speculation has been indulged in relative to the source oftheir supply. The usually-accepted theory is that it comes from the mountainveins uncovered and cut by the torrents above referred to. An- 986 THE GOLD-FIELDS OF THE FORCE THE FORCE RIVER IN THE SUBURBS OF MEDELLIN. Other, and more prolific, source drawn upon appears to have beengenerally overlooked. From the topographical features of the coun-try, and the geological formations exposed, it seems that, prior to theexistence of the Force, the drainage of this part of the continent waseffected through an immense river, now extinct, which had its coursealmost parallel with the present direction of the Force. This ancientriver was evidently destroyed by volcanic action, and its bed, whichwas rich with the accumulated gold of ages, was thrown up and in-clined against the mountain flanks. The Force, afterwards breakingthrough the disturbed territory, and having feeders that cross andwash the inclined channel of the old river, has ever since been draw-ing from that immense source vast amounts of placer gold that, com-bined with the products of the quartz veins adjacent, have made upthe richness of the valley bars. Mining has
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Keywords: ., bookcentury1800, bookdecade1890, booksubj, booksubjectengineering
