1. On the Constitution of the Earth's Atmosphere in Remote Geological Epochs
This is the first paper of a promised series on the subject here announced. In the present paper the author endeavours to shew, that in remote epochs the atmosphere was more extensive and heavier than it is now, that it contained a greater absolute quantity of oxygen, and that this quantity has grad...
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crcambridgeupr:10.1017/s0370164600038074 2024-03-03T08:43:34+00:00 1. On the Constitution of the Earth's Atmosphere in Remote Geological Epochs Johnston 1845 http://dx.doi.org/10.1017/s0370164600038074 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0370164600038074 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Proceedings of the Royal Society of Edinburgh volume 1, page 165-166 ISSN 0370-1646 General Engineering journal-article 1845 crcambridgeupr https://doi.org/10.1017/s0370164600038074 2024-02-08T08:28:17Z This is the first paper of a promised series on the subject here announced. In the present paper the author endeavours to shew, that in remote epochs the atmosphere was more extensive and heavier than it is now, that it contained a greater absolute quantity of oxygen, and that this quantity has gradually diminished up to our own era, and is probably still undergoing a sensible diminution. His views are founded partly on speculative considerations, of which it is not possible to give a sufficiently circumstantial abridgment, and partly on the evidence of various operations going on at or near the surface of the earth, the tendency of which must, on the whole, apparently be to diminish the quantity and proportion of the oxygen in the atmosphere. In addition to the ordinary and well known causes of deterioration, the author points out a new source of diminution to which his attention has been lately drawn. From experiments made upon the aeriform fluid discharged from the earth during an inundation, and obviously expelled by the water penetrating to a considerable depth, and displacing the gases contained in the soil, he found that this gaseous matter consists of 2.5 per cent, carbonic acid, 12.764 oxygen, and 84.736 nitrogen. Taking this observation in conjunction with many others previously made on the composition of the gaseous discharges in volcanic districts, and the gaseous contents of mineral waters, he infers that a process of oxidation is constantly going on at various depths below the earth's surface, the oxygen for which is in all probability derived by absorption of the atmospheric gases at the surface. Article in Journal/Newspaper Carbonic acid Cambridge University Press Proceedings of the Royal Society of Edinburgh 1 165 166 |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
General Engineering |
spellingShingle |
General Engineering Johnston 1. On the Constitution of the Earth's Atmosphere in Remote Geological Epochs |
topic_facet |
General Engineering |
description |
This is the first paper of a promised series on the subject here announced. In the present paper the author endeavours to shew, that in remote epochs the atmosphere was more extensive and heavier than it is now, that it contained a greater absolute quantity of oxygen, and that this quantity has gradually diminished up to our own era, and is probably still undergoing a sensible diminution. His views are founded partly on speculative considerations, of which it is not possible to give a sufficiently circumstantial abridgment, and partly on the evidence of various operations going on at or near the surface of the earth, the tendency of which must, on the whole, apparently be to diminish the quantity and proportion of the oxygen in the atmosphere. In addition to the ordinary and well known causes of deterioration, the author points out a new source of diminution to which his attention has been lately drawn. From experiments made upon the aeriform fluid discharged from the earth during an inundation, and obviously expelled by the water penetrating to a considerable depth, and displacing the gases contained in the soil, he found that this gaseous matter consists of 2.5 per cent, carbonic acid, 12.764 oxygen, and 84.736 nitrogen. Taking this observation in conjunction with many others previously made on the composition of the gaseous discharges in volcanic districts, and the gaseous contents of mineral waters, he infers that a process of oxidation is constantly going on at various depths below the earth's surface, the oxygen for which is in all probability derived by absorption of the atmospheric gases at the surface. |
format |
Article in Journal/Newspaper |
author |
Johnston |
author_facet |
Johnston |
author_sort |
Johnston |
title |
1. On the Constitution of the Earth's Atmosphere in Remote Geological Epochs |
title_short |
1. On the Constitution of the Earth's Atmosphere in Remote Geological Epochs |
title_full |
1. On the Constitution of the Earth's Atmosphere in Remote Geological Epochs |
title_fullStr |
1. On the Constitution of the Earth's Atmosphere in Remote Geological Epochs |
title_full_unstemmed |
1. On the Constitution of the Earth's Atmosphere in Remote Geological Epochs |
title_sort |
1. on the constitution of the earth's atmosphere in remote geological epochs |
publisher |
Cambridge University Press (CUP) |
publishDate |
1845 |
url |
http://dx.doi.org/10.1017/s0370164600038074 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0370164600038074 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Proceedings of the Royal Society of Edinburgh volume 1, page 165-166 ISSN 0370-1646 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0370164600038074 |
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Proceedings of the Royal Society of Edinburgh |
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1 |
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165 |
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166 |
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