Author: Joseph William Spencer
Publisher: LM Publishers
ISBN: 2366595948
Category : History
Languages : en
Pages : 86
Book Description
A glance at a map of the American continent, inclosing the West Indian seas within its mass, suggests that these basins are sunken plains, submerged to only a moderate extent, but the soundings show depths reaching to more than three miles. "It is not too much to say that every spot which is now dry land has been sea at some former period, and every part of space now covered by the deepest oceans has been land." This enunciation still held place among the latest writings of the great geological teacher — Sir Charles Lyell. As the earlier geologists had not the means of measuring the amount of terrestrial movements, the doctrine of mutability of continents and seas, as taught by Lyell, was doubted by many who later substituted the hypothesis of their permanency from the most remote times, although subjected to ceaseless changes of form. The hypothesis of permanency of continents and seas was largely based upon the littoral character of sedimentary formations, although the evidence of the abysmal or oceanic origin of the widespread chalk deposits could not be easily disposed of. Again, the development and distribution of animal and plant life have been skillfully used as evidence against certain great changes in insular and continental connections, beyond limited proportions. The amount of the concession has varied greatly among the different advocates, so that even under the general hypothesis of permanency, the configuration of the West Indian region has undergone great changes, yet not sufficient to bridge over the seas between the two Americas...
The West Indian Bridge between North and South America
Author: Joseph William Spencer
Publisher: LM Publishers
ISBN: 2366595948
Category : History
Languages : en
Pages : 86
Book Description
A glance at a map of the American continent, inclosing the West Indian seas within its mass, suggests that these basins are sunken plains, submerged to only a moderate extent, but the soundings show depths reaching to more than three miles. "It is not too much to say that every spot which is now dry land has been sea at some former period, and every part of space now covered by the deepest oceans has been land." This enunciation still held place among the latest writings of the great geological teacher — Sir Charles Lyell. As the earlier geologists had not the means of measuring the amount of terrestrial movements, the doctrine of mutability of continents and seas, as taught by Lyell, was doubted by many who later substituted the hypothesis of their permanency from the most remote times, although subjected to ceaseless changes of form. The hypothesis of permanency of continents and seas was largely based upon the littoral character of sedimentary formations, although the evidence of the abysmal or oceanic origin of the widespread chalk deposits could not be easily disposed of. Again, the development and distribution of animal and plant life have been skillfully used as evidence against certain great changes in insular and continental connections, beyond limited proportions. The amount of the concession has varied greatly among the different advocates, so that even under the general hypothesis of permanency, the configuration of the West Indian region has undergone great changes, yet not sufficient to bridge over the seas between the two Americas...
Publisher: LM Publishers
ISBN: 2366595948
Category : History
Languages : en
Pages : 86
Book Description
A glance at a map of the American continent, inclosing the West Indian seas within its mass, suggests that these basins are sunken plains, submerged to only a moderate extent, but the soundings show depths reaching to more than three miles. "It is not too much to say that every spot which is now dry land has been sea at some former period, and every part of space now covered by the deepest oceans has been land." This enunciation still held place among the latest writings of the great geological teacher — Sir Charles Lyell. As the earlier geologists had not the means of measuring the amount of terrestrial movements, the doctrine of mutability of continents and seas, as taught by Lyell, was doubted by many who later substituted the hypothesis of their permanency from the most remote times, although subjected to ceaseless changes of form. The hypothesis of permanency of continents and seas was largely based upon the littoral character of sedimentary formations, although the evidence of the abysmal or oceanic origin of the widespread chalk deposits could not be easily disposed of. Again, the development and distribution of animal and plant life have been skillfully used as evidence against certain great changes in insular and continental connections, beyond limited proportions. The amount of the concession has varied greatly among the different advocates, so that even under the general hypothesis of permanency, the configuration of the West Indian region has undergone great changes, yet not sufficient to bridge over the seas between the two Americas...
Collected Papers
Author: Harold Elmer Anthony
Publisher:
ISBN:
Category : Mammals
Languages : en
Pages : 812
Book Description
Publisher:
ISBN:
Category : Mammals
Languages : en
Pages : 812
Book Description
Bulletin of the Geological Society of America
Author: Geological Society of America
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1022
Book Description
Vols. 1-44 include: Proceedings of the annual meeting, 1889-1933, later published separately.
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1022
Book Description
Vols. 1-44 include: Proceedings of the annual meeting, 1889-1933, later published separately.
The American Journal of Science
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 488
Book Description
The American journal of science and arts
Publisher:
ISBN:
Category :
Languages : en
Pages : 488
Book Description
The American journal of science and arts
The American Journal of Science
Popular Science
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 144
Book Description
Popular Science gives our readers the information and tools to improve their technology and their world. The core belief that Popular Science and our readers share: The future is going to be better, and science and technology are the driving forces that will help make it better.
Publisher:
ISBN:
Category :
Languages : en
Pages : 144
Book Description
Popular Science gives our readers the information and tools to improve their technology and their world. The core belief that Popular Science and our readers share: The future is going to be better, and science and technology are the driving forces that will help make it better.
Poole's Index to Periodical Literature
Poole's Index to Periodical Literature
Author: William Frederick Poole
Publisher:
ISBN:
Category : Periodicals
Languages : en
Pages : 670
Book Description
Publisher:
ISBN:
Category : Periodicals
Languages : en
Pages : 670
Book Description
Poole's Index to Periodical Literature: Fourth supplement, January 1, 1897-January 1, 1902
Author: William Frederick Poole
Publisher:
ISBN:
Category : Periodicals
Languages : en
Pages : 676
Book Description
Publisher:
ISBN:
Category : Periodicals
Languages : en
Pages : 676
Book Description
North America
Author: Harold Wellman Fairbanks
Publisher:
ISBN:
Category : Geography
Languages : en
Pages : 180
Book Description
Publisher:
ISBN:
Category : Geography
Languages : en
Pages : 180
Book Description