Sunday 9 September 2012

Fossil Trees found at Brightside, Sheffield, 1896

The following cuttings relate to a number of fossil trees that were unearthed during excavations at Brightside Station, in Sheffield, in 1896.  One of the examples is currently on show in the 'What on Earth' Gallery at Weston Park Museum in Sheffield, and photographs of a couple of the finds are on 'Picture Sheffield'. 

Another example of fossil trees was found at Wadsley in 1933, and may well be the subject of a later posting.


Fossil Trees at Brightside, 1896


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Sheffield Independent – November 17th, 1896. [p7]
FOSSIL TREE AT BRIGHTSIDE
During the excavations for the new line, at Brightside Station, on the Midland Railway, the workmen have brought to light a very fine specimen of a fossil tree.  Though much damaged by the workmen’s tools, there is still to be seen the trunk, with roots branching out as if still growing.  It measures 6ft. 6in. in circumference at the base.  Further operations have revealed another interesting specimen.  The directors of the company intend visiting the cutting, and the fossils will probably be forwarded to Derby.
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Sheffield Telegraph - Nov 18th, 1896. [p9]
A PRIMEVAL FOREST AT BRIGHTSIDE
[Special]
THE DISCOVERY OF FOSSIL TREES
During the excavations through the bank at the side of the railway at Brightside Station, for the purpose of laying down additional lines, the workmen have unearthed some interesting examples of the larger forms of vegetation that flourished at the time when our coal seams were formed.  The bank side is composed chiefly of sandstone mixed with shale, and embedded therein are numerous specimens of ferns that flourished during the carboniferous period.  These, buried in the sand and mud that silted up the land where they originally grew, have now been disinterred, after having been hidden probably for many millions of years.  A still more striking example of carboniferous vegetation was unearthed last week, when the sandstone which the men were removing fell away from the round trunk of a tree, which had been broken off about three feet from the roots.  Under the direction of Mr. Herbert Sherdon, the base of the tree was carefully cleared, and the roots exposed.  The one on the left has been abruptly broken off where some deeper excavations had been made, and the root has been split open horizontally, showing a dark, carbonised layer where the internal pith was.  There are three other principal broad roots extending from the tree, and it may be possible to expose and preserve these for a considerable distance, when the sandstone is further removed.  The bark of the tree can well be seen, converted into a thin layer of coal, adhering to the outer surface in various parts.  The tree itself, of course, has lost all its woody character, and has been converted into a mass of clay ironstone.  On exposure to the air, after its burial of long ages, the outer surface shows a tendency to break off, and the trunk itself will readily split into sections.  The form of the tree is very distinct, and is almost upright in position, after allowing for the general dip of the sandstone.  It is an exceedingly interesting object, and an effort is being made by Mr. Sherdon and his workmen, under the direction of Mr. T. H. Ainsworth, one of the Midland Company’s engineers, to get it out in as perfect a state as possible.  A suggestion was made that it should be sent to Derby, the local head-quarters of the Midland Company, but it has no relation whatever to the geology of that place, and is a most interesting example of the fossils of the local strata, it is to be hoped it will remain in Sheffield, where it will be much more appreciated by students.  Close to it another tree was found lying down in the sandstone, having been levelled, no doubt, in one of the storms of the remote past, when the land thereabouts consisted of a sandy shore, with vast swamps in which grew the carboniferous plants.  For these sandstones and shales at Brightside are a continuation of the ripple-marked beds in the gasworks at Grimesthorpe, which were described in our columns a few weeks ago, and about half a mile further on the ripple-marked sandstone again comes to the surface, so that evidently these trees and plants once flourished near the seashore, afterwards being silted up in mud and sand, washed down to them at times of flood, which ultimately entirely buried them.  It is very probable that in the excavations that have still to be made for these new lines of rail, other trees will be met with, and having now discovered what interesting ground this is, the workmen will no doubt, be careful to preserve any further evidences of ancient vegetation that they may come across.  In fact the top of another tree, about 50 yards further down the line, has already appeared, which promises to be even more complete than the present one, for the bark on its surface is well seen in the small portion so far exposed, while the bole itself appears to show signs of ridges down it.  In many parts of the country where carboniferous strata have been exposed near the surface fallen trunks of trees have been discovered, but it is much more rare to find them in an upright position like these two at Brightside.  And it shows that the deposition of the sandstone and shale round about them must have taken place rather rapidly to bury the trees before exposure to the air had caused them to decay.  A good example of a tree from the Lancashire carboniferous rocks, with extensive roots attached, is in the Manchester Museum.  Hundreds of visitors have flocked to see this remarkable sight at Brightside, and it is necessary to keep careful watch to prevent unthinking curiosity damaging them.  They are certainly worthy of being most carefully preserved.  Remarks were freely made that these must have been covered up by the Flood.  Doubtless they were, though the Noachal Flood scarcely reached this part of the country, and the deluge that covered up these trees occurred in those palaeozoic days that belong to the early stages of the earth’s history – a time that must be counted back by millions of years, before man made his appearance on this planet.
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Sheffield Independent – November 21st, 1896. [p9]
THE FOSSIL TREE AT BRIGHTSIDE
Through the kindly intervention of Sir Frederick Mappin, the fossil tree unearthed at Brightside will not be removed to Derby, but will be presented by the Midland Railway Company to the Public Museum in Weston Park.  The difficulty of getting out the tree unbroken, and removing it intact to the Museum will undoubtedly be very great, but it is hoped that under the direction of the railway company officials the task may be accomplished satisfactorily.
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Sheffield Telegraph – December 15th, 1896.
CURRENT TOPICS
Like plants of more recent growth at this time of year, the primeval forest at Brightside is rapidly being denuded of its foliage, and there will soon be nothing to indicate that thereon, in ages immeasurably remote, the more powerful and gracious sun of those days built up the structures that now provide light and heat for present use.  Not that the plants at Brightside had ever formed workable coal, yet they undoubtedly demonstrated the class of plants that flourished during the period when our coal seams were first formed, or rather when the vegetable organisms lived that afterwards were converted into coal.  A dull, blank wall of solid masonry will soon obliterate all trace of the former forest, though fortunately many specimens of lasting interest will remain in our Museum.  Throughout the excavations at Brightside, the Midland Railway Company has shown its usual considerate courtesy in meeting the wishes of the Museum authorities, who desire to retain evidences of this remarkable forest-bed, or more properly vegetable swamp, and, under the direction of Mr. Taylor, the engineer, and Mr. Herbert Sherdon, who is in charge of the excavations, the workmen have exercised the utmost care in preserving the various fossils which have been discovered.
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Beside the trees already referred to in these columns, a larger trunk was unearthed down to its roots, and stood 7 feet 6 inches in height.  Last week the base of another tree some 2 feet in height, was exposed in an upright position, during the removal of the rock, while lying beside it on the ground was what appeared to be the upper part of this tree, which, during some palaeozoic gale, had been blown off the parent stem.  This measured over fourteen feet in length, and owing to the pressure of the superimposed strata, which after ages had lain down, only to be cleared away by the denuding agencies of still later days, this prone trunk had been so flattened, that while its width was two feet, its thickness, as it lay on the ground, was only 5 inches.  It has, of course, been found impossible to remove these various trees without breakage, though it is hoped that the pieces will be capable of reconstruction in the museums of Sheffield and Rotherham, where they have been placed.  A large number of fossil ferns, calamites, lepidodendroid remains, and other carboniferous plants, have also been reserved for these museums.  The excavations have been singularly rich in fossils, which are usually scarse in our local strata.  The Midland Company, who have been, to a great extent, influenced by Sir Frederick Mappin in this matter, have shown a praisworthy spirit in allowing the work to be done with the care necessary to preserve thse interesting relics, for there is no doubt that it has to some extent delayed the progress of the excavations.
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Sheffield Independent – March 4th, 1897.
FREE LECTURES IN BRIGHTSIDE – THE RECENT GEOLOGICAL DISCOVERY -
Professor Denny delivered the last of his highly valuable series of free lectures in the Brightside Ward on “Some Phases of Plant Life” in the Burngreave Vestry Hall last night.  The subject was “Plants of the Past”, and there was a large attendance.  Mr. T. Firth occupied the chair.  In the course of the lecture – which was elucidated and made more attractive by means of lantern slides – Professor Denny touched on the recent discovery of relics of the Carboniferous age in the new railway cutting at Brightside.  The plants dealt with were those which existed before man’s advent, namely, the non-flowering types of vegetation.  The lecturer opend by describing the various strata of the earth’s surface from the ages during which the earth was in a molten state to the Carboniferous period.  Geologists relied for their theories as to the history of the earth’s surface upon what they found imbedded in these strata.  It was perfectly plain that human life was impossible in the age immediately preceeding the cooling-down of the earth’s surface.  Coming to the Silurian period, the lecturer said that it had been discovered that plants had an existence during the age which presented no features in common with the plants or trees of the present day.  The remains of what was held to be the oldest specimen of genuine tree-life should be conclusive evidence of its being nothing more than a gigantic sea-weed.  Many of the species of this age had died out altogether, or were so exceedingly rare as to be only known to geologists.  In the next period – the Devonian – gigantic plants, 100 feet high and 10 feet in circumference, luxuriated.  Coming to the Carboniferous or coal age, an exceedingly realistic imaginary picture of the appearance of a prehistoric coal forest was thrown on the screen.  Referring to the Brightside discovery of a number of these trunks close together, the lecturer said that they were types which had ceased to exist on the earth countless ages before any flowering plants were known.  It was matter for regret that it had been found impossible to preserve the trunks intact.  They were very excellent examples of trees, showing stem, root, leaves, and even cones.  It was an exceedingly interesting and important find.  Dr. T. H. Morton, of Brightside, had taken photographs of the trees before they were taken to Weston Park Museum, and had kindly prepared the slides for the lecture.  The discovery was one which would have valuable results in geological study.  He pointed out that 26 different kinds of plants had been identified in the discovered strata find, and all the principle plants most characteristic of coal measures had been found there.  The remainder of the lecture dealt lucidly and interestingly with the more striking features of plant life in the Carboniferous age, and at the close, a vote of thanks to the lecturer was moved by Mr. W. H. Ellin, and carried, this concluding the proceedings.
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