VI.—The Life and Work of Linnarsson

1882 ◽  
Vol 9 (3) ◽  
pp. 119-122 ◽  
Author(s):  
Chas. Lapworth
Keyword(s):  
Geological Survey ◽  
Careful Study ◽  
Lower Palaeozoic

During the year 1871, in connexion with his duties upon the Geological Survey of Sweden, Linnarsson made a careful study of the Lower Palaeozoic strata of Dalarne and Jemtland, publishing the fruits of his observations in the following year. Dalarne had been already most successfully investigated by Dr. Sven. Törnquist; but Linnarsson, familiar with details of the better known succession in Westrogothia, was enabled to throw much new light upon the crumpled and shattered strata of this region.

XXV.—Metamorphism in Relation to Structure in the Scottish Highlands

1931 ◽  
Vol 56 (3) ◽  
pp. 621-646 ◽  
Author(s):  
Gertrude Lilian Elles ◽  
Cecil Edgar Tilley
Keyword(s):  
Field Work ◽  
Geological Survey ◽  
Careful Study ◽  
Metamorphic Condition ◽  
Scottish Highlands ◽  
Rock Types ◽  
Long Time ◽  
Metamorphic Zone ◽  
Hand Specimen

The main object of tho present paper is the consideration of the structure of the Central and S.W. Highlands as shown up by the metamorphic condition of the beds. This metamorphic condition has boon studied over the length and breadth of the country, mapped and deduced from very many outcrops in all districts. Sometimes it was possible to superpose the the details respecting the metamorphism upon the 1-inch maps of the Geological Survey, but in many other cases the areas were mapped upon the 6-inch scale. Naturally this work has taken a long time, for it has necessitated the collection of many thousands of specimens, and nearly 3000 rocks have been sliced and examined, since it is not always possible to define the limits of a metamorphic zone with precision by field work alone, and many rock types were encountered that rendered a more careful study advisable than was possible from the mere examination of a hand specimen.

Palaeozoic studies in honour of Sir James Stubblefield

1981 ◽  
Vol 118 (6) ◽  
pp. 581-589 ◽  
Author(s):  
James Stubblefield
Keyword(s):  
Royal College ◽  
New Genus ◽  
Science And Technology ◽  
Field Work ◽  
Imperial College ◽  
Geological Survey ◽  
Current Survey ◽  
Lower Palaeozoic ◽  
Cambrian System

Sir James was born on 6 September 1901 at Cambridge where he attended the Perse School. He received his geological education at Chelsea Polytechnic and the Royal College of Science. In 1923 he was appointed demonstrator in geology at the Imperial College of Science and Technology, London University, where he stayed until 1928; for his last two years there he also served as Warden at the pioneer Imperial College hostel. While at Imperial College he studied the Shineton Shales of the Wrekin district of Shropshire under the guidance of W. W. Watts and in collaboration with his life-long friend O. M. B. Bulman, and was awarded a Ph.D. in 1925. This work in Shropshire provided the stimulus for his continuing contribution on the Cambrian system and its faunas, and on trilobites of all ages. During this period he also recorded his observations on Tertiary crabs from Zanzibar, a group he was to return to in later years. In 1928 he obtained one of the two posts offered by the Geological Survey, being appointed Geologist. He undertook field work in the Dorking district as a prelude to an intended posting to the Survey office at York, but the death of G. W. Lee, then palaeontologist in Edinburgh, determined that Stubblefield should remain at the headquarters of the Survey at Jermyn Street in London. Internal transfers of the palaeontological staff left no member available to determine the fossils then accumulating from the current survey of the Shrewsbury district, and Stubblefield was asked by the Director to undertake this task because of his knowledge of the Lower Palaeozoic faunas of Shropshire. This transfer became long-term and thus began his association with, and eventual leadership of, the Palaeontological Department of the Survey, and secured the continuation of his notable contributions to palaeontology. The Shrewsbury commitment led to visits to the area during which new faunal horizons were discovered in the local Cambrian and Ordovician, including the Nemagraptus gracilis fauna from the Breidden Hills; other finds included the then earliest British eurypterid subsequently described by L. Størmer as the type of a new genus under the name of Brachyopterus stubblefieldi.

scholarly journals II.—The Graptolite-bearing Rocks of Victoria, Australia

1899 ◽  
Vol 6 (10) ◽  
pp. 439-451 ◽  
Author(s):  
T. S. Hall
Keyword(s):  
Geological Survey ◽  
Lower Palaeozoic

The area occupied by Lower Palæozoic rocks in Victoria is an extensive one, and is pretty equally divided between Ordovician and Silurian, the part occupied by Cambrian being small. According to Dr. A. R. C. Selwyn, formerly Director of the Geological Survey of the Colony, the total area amounts to somewhere about 30,000 square miles in extent, and although in this estimate he included all areas occupied by these rocks provided the cover was not more than. 350 feet in thickness, it will still leave us with a large extent of country over which graptolites may be found.

scholarly journals VI.—On a Supposed Case of Metamorphism in an Alpine Rock of Carboniferous Age

1883 ◽  
Vol 10 (11) ◽  
pp. 507-511
Author(s):  
T. G. Bonney
Keyword(s):  
Metamorphic Rock ◽  
Geological Survey ◽  
Crystalline Schist ◽  
Careful Study ◽  
Special Study ◽  
Mica Schist ◽  
Quartz Porphyry ◽  
Molecular Changes ◽  
Lower Silurian

A few years since it would have been flat heresy to assert that very clear proof would be necessary before we could accept a crystalline schist as the metamorphosed representative of a rock of Palæozoic age. Yet at the present time many who have made a special study of this branch of petrology would not hesitate to go thus far, and some would even declare that we do not know of any completely metamorphic rock which is not of Archæan age. Certainly the stock instances of metamorphism in Wales, and especially in Anglesey, in Cornwall, in Leicestershire, in Worcestershire, have utterly broken down on careful study. Outside the English Geological Survey probably no person who can use a microscope believes that the schists of Anglesey are altered Cambrian, or that the slates of this age are melted down into the quartz-porphyry of Llyn Padarn. It is becoming evident that even the metamorphic fastnesses of the Highlands are in danger, and that at any rate even there the realm of “altered Lower Silurian” will be grievously curtailed. Startling facts are now and then adduced by the defenders of what we may call the ‘established’ (i.e. non-progressive) geology; fossils are said to have occurred in crystalline non-calcareous rocks, Calamites in gneiss, Trilobites in mica-schist, and so on; but those who are familiar with the molecular changes which take place in the formation of such rocks as these will require the clearest evidence before they can accept statements so antecedently improbable.

Richard Dixon Oldham, 1858-1936

1936 ◽  
Vol 2 (5) ◽  
pp. 111-113
Keyword(s):  
Trinity College ◽  
Field Work ◽  
Geological Survey ◽  
Careful Study ◽  
Trinity College Dublin ◽  
Geological Surveys ◽  
Assistant Superintendent

Mr. R. D. Oldham, who died on 15 July, was the son of Dr. Thomas Oldham (1816-78), in succession professor of geology at Trinity College, Dublin, and director of the Geological Surveys of Ireland and India. Towards the close of his life in India, Thomas Oldham became interested in the earthquakes of that country. He made a careful study of the Cachar earthquake of 1869 on the lines laid down by Robert Mallet. The materials collected by him were brought to England on his retirement from the Survey in 1876, but ill-health prevented the completion of his report, and the notes were returned to India. His valuable “Catalogue of Indian Earthquakes from the Earliest Time to the End of a .d . 1869 ” was also published after his death ( India Geol. Surv. Mem., vol. 19, pt. 1, pp. 1—88 (1882) ; vol. 19, pt. 3, pp. 1—53 (1883) ). Richard Dixon Oldham was born on 31 July, 1858, and was educated at Rugby and the Royal School of Mines. He joined the staff of the Geological Survey of India as assistant-superintendent in 1879, and soon afterwards was dispatched for field-work to the Himalayan district. One of his earliest tasks, however, was the completion, of his father’s memoir on the Cachar earthquake, more than half of which, including the entire discussion of the observations, is due to him. Probably, also, he was responsible for the editing of the catalogue of Indian earthquakes.

Alfred Selwyn - 19th Century Trans-Atlantic Connections Via Australia

1990 ◽  
Vol 9 (2) ◽  
pp. 143-157 ◽  
Author(s):  
D. Branagan
Keyword(s):  
19Th Century ◽  
Early Years ◽  
Geological Survey ◽  
British Geological Survey ◽  
Field Evidence ◽  
New Ideas ◽  
Lower Palaeozoic ◽  
High Standards ◽  
The 19Th Century ◽  
Geological Research

The contributions of A.R.C. Selwyn to geological science were considerable, and possibly unique in the 19th century, as they spanned three continents in a career lasting more than 50 years. In particular Selwyn is rightly regarded as establishing geology as a profession in Australia, both by his own high quality mapping, and by the training of a number of talented young men in his Geological Survey of Victoria (1852-1868). In Canada he pursued the same high standards when appointed as Director of the Geological Survey at a time when the Dominion had just become greatly enlarged. A strong supporter of his staff, Selwyn engaged in a controversy with U.S. geologists about Precambrian and Lower Palaeozoic stratigraphy, maintaining that Canadian field evidence provided the key which negated the U.S. stand. Selwyn maintained links with the colleagues of his early years in the British Geological Survey (1845-1852) during his long career, keeping in touch with new ideas in Europe and informing his friends about the results of Australian and Canadian geological research.

IX.—Lower Palæozoic Hyolithidæ from Girvan.

1910 ◽  
Vol 47 (2) ◽  
pp. 203-222 ◽  
Author(s):  
F. R. Cowper Reed
Keyword(s):  
The Other ◽  
Geological Survey ◽  
Lower Palaeozoic

The extensive series of specimens of members of the Hyolithidæ which Mrs Elizabeth Gray has collected from the Ordovician and Silurian beds of the Girvan district, and submitted to me for investigation, forms the basis of the following memoir.Through the kindness of Dr John Horne and Professor J. W. Gregory, special facilities have been afforded me of examining the other Scotch examples in the Geological Survey Collection, Edinburgh, and the Museum of Glasgow University. My thanks are also due to Dr F. L. Kitchin for the opportunity of studying the specimens in the Jermyn Street Museum.

The Upper Devonian Fishes of Victoria, Australia, and their Bearing on the Stratigraphy of the State

1931 ◽  
Vol 68 (5) ◽  
pp. 206-231 ◽  
Author(s):  
Edwin Sherbon Hills
Keyword(s):  
Igneous Rock ◽  
Gold Deposits ◽  
The State ◽  
Upper Devonian ◽  
Geological Survey ◽  
Rock Masses ◽  
General Geology ◽  
Lower Palaeozoic ◽  
Detailed Work

The recent discovery of fossil fishes in the Devonian rocks of Victoria may appear somewhat surprising in view of the fact that the general geology of the state has by now been worked out in fair detail, both by the Geological Survey and by independent investigators. Much of the detailed work has been confined, however, to the Lower Palaeozoic groups, in which the original gold deposits of the state are found, the economically less important Upper Palaeozoic rocks having been subjected to less minute examination by the Survey, especially of late years, and left in the hands of individual geologists, who often turned to the great igneous rock masses occurring in the central part of the state as constituting a congenial subject for research.

V.—On the Correlation of the Lower Palæozoic Rocks of Britain and Scandinavia

1881 ◽  
Vol 8 (6) ◽  
pp. 260-266 ◽  
Author(s):  
Charles Lapworth
Keyword(s):  
Rapid Growth ◽  
Geological Survey ◽  
The Past ◽  
Scandinavian Peninsula ◽  
Lower Palaeozoic ◽  
First Time

In the pages of the Geol. Mag., about a year ago, I called attention to the rapid growth of our knowledge of the sequence and fossils of the Lower Palæozoic Rocks of Sweden, through the brilliant discoveries of the officers of the Swedish Geological Survey; and pointed out what appeared to myself to be their special bearing upon certain controverted points in British Geology. During the past year the additional results obtained by the same group of earnest and unprejudiced observers are so important in themselves, and have been worked out with such care and elaboration, that we have now a tolerably complete view of the entire Lower Palaeozoic Succession in the Scandinavian Peninsula, and are, for the first time, in a position to attempt the detailed correlation of its recognized rock groups with their representatives in Britain.

III.—On some Life Zones in the Lower Palæozoic Rocks of the British Areas, as defined mainly by Researches during the Past 30 Years

1894 ◽  
Vol 1 (9) ◽  
pp. 399-405
Author(s):  
Henry Hicks
Keyword(s):  
Geological Survey ◽  
Fourth Edition ◽  
Middle Cambrian ◽  
The Past ◽  
Lower Palaeozoic ◽  
Organic Remains

Up to the year 1867 the only traces of organisms that had been found in the beds then classed as Cambrian by the Geological Survey (now Lower and part of Middle Cambrian of most authors) were tracks and burrows of Annelids; and the doubtful Trilobite Palæopyge found by Mr. Salterinthe Longmynd rocks of Shropshire.in“Siluria”, fourth edition, 1867, p. 30, Sir R. Murchison refers to them as follows: “These, then, are the only signs of former life we have yet become acquainted with after the most assiduous researches in the Cambrian deposits of such vast dimensions, which are often, I repeat, less altered than much younger rocks replete with organic remains”

Sign in / Sign up

Export Citation Format

Share Document