File:The Quarterly journal of the Geological Society of London (12736009735).jpg

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356
J. F. BLAKE AND W. H. H1JDLEST0N ON
(fig. 16), attention to the following points will be necessary. The
two are approximately parallel ; the distance between them about
1 J mile. Their eastern terminations correspond ; but Ampleforth-
Beacon quarry (e of fig. 17) is due south of a point 300 yards to the
Fig. 17. — Section from Ampleforth Beacon to Oswaldkirlc (about 2 miles).
w.
675 ft.
ac.v;vvvx##.;.
Base-line 225 feet above sea-level.
1. Lower Calcareous Grit.
2'. Passage beds.
4. Coralline Oolite.
4\ Coral Rag.
5. Upper Calcareous Grit.
O. C. Oxford Clay.
e. Limestone quarry at Ampleforth Beacon.
f. Quarry above Oswaldkirk Hagg.
g. Quarry below Oswaldkirk Hagg.
h. Quarry in Oswaldkirk village.
x-y. Ampleforth College to St. Oswald's Church.
West of Sproxton quarry (cl of fig. 16). This fixes the relation of the
two sections. As regards elevation, the Coralline Oolite has risen
from d of fig. 16, 450 feet, to e of fig. 17, 675 feet. This is the greatest
elevation attained by it in any part of Yorkshire. It will be ob-
served that this escarpment runs nearly in the same direction as the
dip. The beds fall over towards the north, however, especially on
the reverse slope.
The line from x to y represents the level of the road between
Oswaldkirk and Ampleforth projected upon the section, x being the
position of Ampleforth College. Starting from this point, the road
to within a short distance of quarry g passes over Oxford Clay, but
east of this point enters the Lower Calcareous Grit, all the beds
descending with a considerable dip to the eastwards. There are
several quarries in the Lower Calcareous Grit at various points in
the escarpment between the two villages. The stone is very un-
tbssiliferous, and presents few features of interest; but we have
altogether failed to detect the Hambleton Oolite, or Lower Lime-
stone, as a distinct formation.
In a district where both faults and landslips tend to obscure and
mislead, it may be dangerous to calculate thicknesses from heights
taken upon an escarpment ; but there seems good reason to suppose
that the Lower Calcareous Grit is at least 100 feet thick in that
portion of the escarpment between e and /. It is succeeded by
impure gritty oolites and speckled grits, which exhibit few traces of

fossils in this locality. These constitute throughout this district the
Date
Source https://www.flickr.com/photos/biodivlibrary/12736009735
Author Geological Society of London
Full title
InfoField
The Quarterly journal of the Geological Society of London.
Page ID
InfoField
35818485
Item ID
InfoField
110705 (Find related Wikimedia Commons images)
Title ID
InfoField
51125
Page numbers
InfoField
Page 356
BHL Page URL
InfoField
https://www.biodiversitylibrary.org/page/35818485
Page type
InfoField
Text
Flickr sets
InfoField
  • The Quarterly journal of the Geological Society of London. v. 33 (1877).
Flickr tags
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Flickr posted date
InfoField
24 February 2014
Credit
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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.

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26 August 2015

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