28 MAY 2013 by ideonexus
Geological and Social Impact of the Himalayas
When you look at the planet from low orbit, the impact of the Himalayas on Earth’s climate seems obvious. It creates the rain shadow to beat all rain shadows, standing athwart the latitude of the trade winds and squeezing all the rain out of them before they head southwest, thus supplying eight of the Earth’s mightiest rivers, but also parching not only the Gobi to the immediate north, but also everything to the southwest, including Pakistan and Iran, Mesopotamia, Saudi Arabia, even North... 1 
notes
notesThey scorch the Earth and scorch the societies that live there. (Note: I disagree, this is overgeneralizing and ignores social ills of societies in more temperate climates)
11 JUN 2012 by ideonexus
The Relationship Between Geology and Geography
All that comes above the surface [of the globe] lies within the province of Geography; all that comes below that surface lies inside the realm of Geology. The surface of the earth is that which, so to speak, divides them and at the same time 'binds them together in indissoluble union.' We may, perhaps, put the case metaphorically. The relationships of the two are rather like that of man and wife. Geography, like a prudent woman, has followed the sage advice of Shakespeare and taken unto her '... 1 notes
notesThey are intertwined, but there are strict boundaries.
09 JUN 2012 by ideonexus
The Center of the Earth
Of all regions of the earth none invites speculation more than that which lies beneath our feet, and in none is speculation more dangerous; yet, apart from speculation, it is little that we can say regarding the constitution of the interior of the earth. We know, with sufficient accuracy for most purposes, its size and shape: we know that its mean density is about 5½ times that of water, that the density must increase towards the centre, and that the temperature must be high, but beyond thes... 1 notes
notesInvites speculation and is the realm of mathematics, not observation.
05 JUN 2012 by ideonexus
Rocks Contain Impressions of Irreversible Events
Historical chronology, human or geological, depends... upon comparable impersonal principles. If one scribes with a stylus on a plate of wet clay two marks, the second crossing the first, another person on examining these marks can tell unambiguously which was made first and which second, because the latter event irreversibly disturbs its predecessor. In virtue of the fact that most of the rocks of the earth contain imprints of a succession of such irreversible events, an unambiguous working ...
1 Like drawing two strokes on a clay tablet.
05 JUN 2012 by ideonexus
On Reading Chronology in Nature
I do ... humbly conceive (tho' some possibly may think there is too much notice taken of such a trivial thing as a rotten Shell, yet) that Men do generally rally too much slight and pass over without regard these Records of Antiquity which Nature have left as Monuments and Hieroglyphick Characters of preceding Transactions in the like duration or Transactions of the Body of the Earth, which are infinitely more evident and certain tokens than any thing of Antiquity that can be fetched out of C...Folksonomies: geology
Folksonomies: geology
1 notes
notesHooke describes the difficulty and importance of establishing a chronology for mutations and catastrophes in the geological record.
31 MAY 2012 by ideonexus
Ancient Description of Layers in Mountains
Where there is cinnabar above, yellow gold will be found below. Where there is lodestone above, copper and gold be found below. Where there is calamine above, lead, tin, and red copper will be found below. Where there is haematite above, iron will be found below. Thus it can be seen that mountains are full of riches. Folksonomies: geology
Folksonomies: geology
1 notes
notesFrom China, that "mountains are full of riches."
29 MAY 2012 by ideonexus
Geologists VS Physicists on the Age of the Earth
Geologists have not been slow to admit that they were in error in assuming that they had an eternity of past time for the evolution of the earth's history. They have frankly acknowledged the validity of the physical arguments which go to place more or less definite limits to the antiquity of the earth. They were, on the whole, disposed to acquiesce in the allowance of 100 millions of years granted to them by Lord Kelvin, for the transaction of the whole of the long cycles of geological histor... 1 notes
notesGeologists argued for a much older Earth than the Physicists allowed for.
29 MAY 2012 by ideonexus
Geology is a Healthy Science
Apart from its healthful mental training as a branch of ordinary education, geology as an open-air pursuit affords an admirable training in habits of observation, furnishes a delightful relief from the cares and routine of everyday life, takes us into the open fields and the free fresh face of nature, leads us into all manner of sequestered nooks, whither hardly any other occupation or interest would be likely to send us, sets before us problems of the highest interest regarding the history o...Folksonomies: geology
Folksonomies: geology
1 notes
notesIt gets you out in the open air and trains you in virtues of observation.
26 APR 2012 by ideonexus
"Peculiar Difficulties" of Geology
Geology has its peculiar difficulties, from which all other sciences are exempt. Questions in chemistry may be settled in the laboratory by experiment. Mathematical and philosophical questions may be discussed, while the materials for discussion are ready furnished by our own intellectual reflections. Plants, animals and minerals, may be arranged in the museum, and all questions relating to their intrinsic principles may be discussed with facility. But the relative positions, the shades of di...Folksonomies: geology
Folksonomies: geology
1 notes
notesOther sciences have clear demarcations and methods of experimentation, while Geology is more muddled. I think the author overestimates the certainty of species classification.
23 APR 2012 by ideonexus
Fossils and the Age of the Earth
In the mountains of Parma and Piacenza, multitudes of shells and corals filled with worm-holes may be seen still adhering to the rocks, and when I was making the great horse at Milan a large sack of those which had been found in these parts was brought to my workshop by some peasants... The red stone of the mountains of Verona is found with shells all intermingled, which have become part of this stone... And if you should say that these shells have been and still constantly are being created ... 1 notes
notesLeonardo da Vinci sees evidence that mountains were once under the sea.
