A Preliminary Report On a Part of the Phosphates And Marls of Georgia
A Preliminary Report On a Part of the Phosphates And Marls of Georgia
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It appears then, to me, that the best explanation of these phosphatic nodules is to consider them formed, by what, for want of a better name, we may call con- cretionary action. The excreta, softer tissues, and smaller bones of the Yerte'brata, the bodies of numerous Invertebrata, many of which ORIGIN OF PHOSPHATES 41 have left no other trace behind, the various marine plants, which prob- ably flourish abundantly in a shallow sea, to say nothing of any apatite, which might be present in the det...ritus, wherein they were entombed, ' would furnish a considerable supply of phosphates; in fact, coeteris paribus, a shallow sea appears to me more likely to be rich in phosphates, than a deep one. The phosphates of the more perish- able parts of the above named organisms would be dissolved, in the water permeating the mud of the sea bottom, which would, also, be supplied with carbonic acid from decomposition, and so the mud be saturated with a weak solution of phosphate of lime. Now, if at a certain point in the mud, there were an excess of phosphate of lime, and, especially, if ammonia were being evolved at that point, the phosphate in the neighboring solution might be precipitated; and, probably (for it seems to have often happened with other minerals), all the phosphates of the surrounding mass would be precipitated about the nucleus.
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To quickly assess the difficulty of the text, read a short excerpt:
It appears then, to me, that the best explanation of these phosphatic nodules is to consider them formed, by what, for want of a better name, we may call con- cretionary action. The excreta, softer tissues, and smaller bones of the Yerte'brata, the bodies of numerous Invertebrata, many of which ORIGIN OF PHOSPHATES 41 have left no other trace behind, the various marine plants, which prob- ably flourish abundantly in a shallow sea, to say nothing of any apatite, which might be present in the det...ritus, wherein they were entombed, ' would furnish a considerable supply of phosphates; in fact, coeteris paribus, a shallow sea appears to me more likely to be rich in phosphates, than a deep one. The phosphates of the more perish- able parts of the above named organisms would be dissolved, in the water permeating the mud of the sea bottom, which would, also, be supplied with carbonic acid from decomposition, and so the mud be saturated with a weak solution of phosphate of lime. Now, if at a certain point in the mud, there were an excess of phosphate of lime, and, especially, if ammonia were being evolved at that point, the phosphate in the neighboring solution might be precipitated; and, probably (for it seems to have often happened with other minerals), all the phosphates of the surrounding mass would be precipitated about the nucleus.
What to read after A Preliminary Report On a Part of the Phosphates And Marls of Georgia?
You can find similar books in the "Read Also" column, or choose other free books by S W Samuel Washington Mccallie to read onlineMoreLess
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