Scottish geographical magazine . ^^^f^^J^^.^^^ Sfe-. ^r-:^!!*^^; ,^-*-^i 4. —The Plains of Mariquita, Magdalena valley, showing denudedglacial deposits 900 feet thick. THE GLACIAL PHENOMENA OF COLOMBIA (SOUTH AMERICA). 473 that spring from the deposit have milky water, which no ordinary filtra-tion can clarify. It is reputed to be very healthy to drink. The streamwhich runs down the edge of the valley to the right finds its wayamongst huge boulders of syenitic granite, brought down from far aboveIbague. These probably represent the remains of the lateral moraine ofthe glacier. The streams of w
Scottish geographical magazine . ^^^f^^J^^.^^^ Sfe-. ^r-:^!!*^^; ,^-*-^i 4. —The Plains of Mariquita, Magdalena valley, showing denudedglacial deposits 900 feet thick. THE GLACIAL PHENOMENA OF COLOMBIA (SOUTH AMERICA). 473 that spring from the deposit have milky water, which no ordinary filtra-tion can clarify. It is reputed to be very healthy to drink. The streamwhich runs down the edge of the valley to the right finds its wayamongst huge boulders of syenitic granite, brought down from far aboveIbague. These probably represent the remains of the lateral moraine ofthe glacier. The streams of water from the melting ice carried away thelighter materials, and hence the bed of the present stream yielded greatquantities of gold in Spanish times. It is said that on an average eachNegro obtained about 30 oz. of gold per diem. The gold found here andabove Ibague, as well as in the Coello valley, is all rough and not wornat all, and carries much of its quartz matrix. It clearly was not broughtdown by water, and most likely
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectgeography, bookyear18
