File:The Quarterly journal of the Geological Society of London (13365010895).jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file (1,239 × 2,073 pixels, file size: 614 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description

1849..
BROWN ON THE SYDNEY COAL-FIELD,
129
a. Starting from the base of the section, the first erect tree is met
with in the bed of argillaceous shale No. 51, 222 feet above the mill-
stone grit. It is a fluted Sigillaria, 15 inches in diameter and 3 feet
high ; the base spreads out over the two-inch coal No. 50, but no
roots are visible. The interior of the stem is filled with argillaceous
shale. See Fig. 5.
h. In the next superior bed of argillaceous underclay, two upright
stems of Sigillariae occur only 4 feet apart; one is 18 inches and
the other 27 inches in diameter at the top, their height being 4 feet.
The stems are fluted and covered with a bark of coal three-fourths of
an inch thick. They enlarge considerably as they descend, but no
roots are visible. We have here conclusive evidence that a slow and
gentle subsidence of the coal-measures was in progress during their
Fig. 5.
accumulation ; the two-inch coal No. 50, at one period the surface on
which the first tree grew, having subsided a depth of eight feet, the
shallow water was filled up with mud until it reached the surface, on
which the two trees in the underclay No. 52 flourished.
c. At the height of 147 feet above the last trees, and 21 above the
Indian Cove Seam, two large stems of fluted Sigillarise with a coaly
bark half an inch thick occur ; their length is 5 feet and their dia-
Fig. 6.
meter at the top 24 inches, which increases rapidly as they descend,
but no traces of roots can be seen, owing to the soft carbonaceous
shale which underlies them having fallen away from beneath.
d. About eight feet higher in the section, several erect Calamites,
from 4 to 8 feet in length and 3 to 5 inches in diameter, occur in the
micaceous sandstone No. 88. They do not present any traces of
roots.
e. Erect Calamites, varying from 3 to 8 feet in height, and about
5 inches in diameter, are also met with in the bed of arenaceous
shale No. 119, being 151 feet above the sandstone No. 88, last men-

tioned. No roots are observable.
Date
Source https://www.flickr.com/photos/biodivlibrary/13365010895
Author Geological Society of London
Full title
InfoField
The Quarterly journal of the Geological Society of London.
Page ID
InfoField
36933954
Item ID
InfoField
113689 (Find related Wikimedia Commons images)
Title ID
InfoField
51125
Page numbers
InfoField
Page 129
Names
InfoField
NameFound:Calamites NameConfirmed:Calamites EOLID:13132177 NameBankID:4098476 NameFound:Sigillaria NameConfirmed:Sigillaria EOLID:13132168 NameBankID:4343184
BHL Page URL
InfoField
https://www.biodiversitylibrary.org/page/36933954
Page type
InfoField
Text
Flickr sets
InfoField
  • The Quarterly journal of the Geological Society of London. v. 6 (1850).
Flickr tags
InfoField
Flickr posted date
InfoField
23 March 2014
Credit
InfoField
This file comes from the Biodiversity Heritage Library.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

العربية ∙ বাংলা ∙ Deutsch ∙ English ∙ español ∙ français ∙ italiano ∙ 日本語 ∙ македонски ∙ Nederlands ∙ polski ∙ +/−



Licensing

[edit]
w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by BioDivLibrary at https://flickr.com/photos/61021753@N02/13365010895. It was reviewed on 26 August 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

26 August 2015

This image is in the public domain because it is a mere mechanical scan or photocopy of a public domain original, or – from the available evidence – is so similar to such a scan or photocopy that no copyright protection can be expected to arise. The original itself is in the public domain for the following reason:
Public domain

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as when the enhancements are clear but insufficient. For known raw unenhanced scans you can use an appropriate {{PD-old}} tag instead. For usage, see Commons:When to use the PD-scan tag.

Note: This tag applies to scans and photocopies only. For photographs of public domain originals taken from afar, {{PD-Art}} may be applicable. See Commons:When to use the PD-Art tag.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current11:11, 26 August 2015Thumbnail for version as of 11:11, 26 August 20151,239 × 2,073 (614 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{BHL | title = The Quarterly journal of the Geological Society of London. | source = http://www.flickr.com/photos/biodivlibrary/13365010895 | description = 1849.. <br> BROWN ON THE SYDNEY COAL-FIELD, <br> 129 <br> a. Starting fr...

You cannot overwrite this file.

There are no pages that use this file.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:The_Quarterly_journal_of_the_Geological_Society_of_London_(13365010895).jpg&oldid=883675450"