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Toghill, P. (1990).
Ten years of geology in
Shropshire, p.1-3
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Russell, V. (1990).
The geological controls on quarries, p.4-6
|
 |
Brown, I.J. (1990).
The ironstone mines of
Shropshire, p.7-9
|
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Wilson, R.C.L. (1990).
Earth Sciences and the National Curriculum, p.10-12
|
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Walton, J. (1990).
Karakoram, p.13-15
|
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Fletcher, C.J.N. (1990).
Modern regional mapping in Central Wales, p.16-19
|
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Butler, J.B. (1990).
A review of the tectonic history of the Shropshire area, p.20-34
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Complete volume, p.1-34
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[51
KB] |
Toghill,
P. (1990). Ten years of geology in
Shropshire, p.1-3
A review of the first ten years of the Society's existence and
how it had been formed in the late seventies, going on to describe a number of topics that had been the
focus of significant research during that period. These included the
Precambrian/Cambrian boundary, the major faults, and the palaeogeography of the
Iapetus Ocean.
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[53
KB] |
Russell, V. (1990).
The geological controls on quarries, p.4-6
Summary of a talk describing the geological influences on
quarrying utilising examples drawn primarily from quarries being actively worked
within Shropshire.
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[44
KB] |
Brown, I.J. (1990).
The ironstone mines of
Shropshire, p.7-9
Summary of a talk describing the occurrence of ironstone within
Shropshire and the methods by which it was mined.
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[53
KB] |
Wilson, R.C.L. (1990).
Earth Sciences and the National Curriculum, p.10-12
Summary of a talk describing development of earth science within
the National Curriculum. The exploration of science is largely content free, as
is the nature of science which depends on concepts rather content. Earth science
is a good vehicle for carrying these ideas forwards, referring to how science
has progressed, how it relates to society, how scientific ideas have changed
through time, and the perception of science in other cultures.
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[53
KB] |
Walton, J. (1990).
Karakoram, p.13-15
Summary of a talk to describe the work of the surveying team that
part of the International Karakoram Project which was undertaken to celebrate
the Royal Geographical Society's
150th anniversary.
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[60
KB] |
Fletcher, C.J.N. (1990).
Modern regional mapping in Central Wales, p.16-19
Summary of a talk to describe the recently begun mapping by the
BGS of the Lower Palaeozoic basin of Wales, an area of interest because it
contains a variety of turbiditic sediments, it is deformed, but not intensively,
it has been subjected to low grade metamorphism, and contains mineralisation
although there are very few igneous intrusions.
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[7.769
MB] |
Butler, J.B. (1990).
A review of the tectonic history of the Shropshire area, p.20-34
A review of the tectonic data available for Shropshire, relating
this to information which has become available from the exploration of the
north-west continental shelf.
The tectonic history of Shropshire records short bursts of compression
producing folding and wrench faulting as a result of continental collision,
followed by longer periods of tension, deposition and reversal of movement along
the wrench fault system.
The County lies upon the Midland Block, comprising Longmyndian and
Charnian rock to which was accreted Island Arc volcanics and related sediments
along the line of the Pontesford Lineament in the late Precambrian. The
so-called Caledonian grain was determined at this time and was reactivated many
times subsequently.
Sediments were folded during the Taconic pulse in mid-Ordovician, and
then continental collision along the Iapetus suture in mid-Devonian intensified
the Caledonian grain. At the end of the Devonian, collision occurred to the
south of the Midland Block. Pulses during the Carboniferous produced the
Hercynian basins and welded the continents into one super-continent: Pangea.
Break-up of Pangea was followed by a taphrogenic regime with rifting
(Cimmerian) in the Permo-Triassic and early Cretaceous. Compressive forces
operated at the end of the Cretaceous with reactivation of old wrench faults.
Finally, Styrian compression inverted the Weald-type basins and most
likely elevated the Welsh Massif at the same time, some 10 million years ago.
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[7.987
MB] |
Complete volume, p.1-34
All papers.
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[14.894
MB] |
Archival volume of original lithographed version
(scanned), 20 pp..
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