Scottish Journal of Geology最新文献

{"title":"Notes on the brachiopod species from the Silurian of the Pentland Hills described by Lamont (1978)","authors":"Y. Candela, D. Harper, W. R. B. Crighton","doi":"10.1144/sjg2016-003","DOIUrl":"https://doi.org/10.1144/sjg2016-003","url":null,"abstract":"Four Silurian brachiopod species from the Pentland Hills, previously ignored or designated nomina dubia, require some recognition on the basis of material identified in the collections of the National Museum of Scotland and a closer scrutiny of the published work with respect to the guidelines of the International Commission of Zoological Nomenclature.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":"53 1","pages":"29 - 33"},"PeriodicalIF":0.7,"publicationDate":"2017-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46598456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Addenda to the record of machaeridian shell plates in the Wether Law Linn Formation (Late Llandovery), Pentland Hills, Scotland","authors":"Y. Candela, W. R. B. Crighton","doi":"10.1144/sjg2016-006","DOIUrl":"https://doi.org/10.1144/sjg2016-006","url":null,"abstract":"Additional machaeridian specimens from the Wether Law Linn Formation (Telychian) have increased our knowledge of this poorly recorded but abundant group in the Pentland Hills, located a few kilometres SE of Edinburgh. A new type of anterior outer shell plate is described and is compared with material previously described from the same horizon and locality. Moreover, a new species of Plumulites is established on the basis of a disarticulated but close association of shell plates.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":"53 1","pages":"35 - 39"},"PeriodicalIF":0.7,"publicationDate":"2017-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1144/sjg2016-006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44760512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reply to Discussion on ‘The Neoproterozoic to Mid-Devonian evolution of Scotland: a review and unresolved issues’ Scottish Journal of Geology, 51, 5–30","authors":"J. Dewey, I. Dalziel, R. J. Reavy, R. Strachan","doi":"10.1144/SJG2016-015","DOIUrl":"https://doi.org/10.1144/SJG2016-015","url":null,"abstract":"In the first paragraph of his discussion of our paper, Burton sets up his definition of what he thinks should have been the structure and purpose of our paper, his opinion of what a review should be and then complains that we did not follow his definition. We reject his definition, having defined our purpose in the abstract of our review. We were invited to write a short review of the Precambrian–Lower Palaeozoic tectonic history of Scotland. We structured the review around the topics that interest us; the paper was not, and could not be, an in-depth review of the opinion of everyone who had published relevant data and ideas on the topics covered in the paper. Our purpose, in the space allotted, was to present an overview review rather than a lengthy document argued in detail with references to everyone who had published on the topic. A full detailed analysis and review of the kind suggested would have been far too long for the Scottish Journal of Geology. The purpose of the paper is stated in the abstract and the last paragraph of the summary. There was no conscious effort to exclude Bluck's work; his work did not feature in our review, just as that of many hundreds of geologists who have also written on the subject. Several people who reviewed the manuscript, including the referees, made no mention of the absence of references to Bluck's published work, and it simply did not occur to us as we wrote it. We regret that this has caused offence. In our short review, we outlined our views and did not try to include and argue against all the different opinions with which we disagree. To have done so would have quadrupled the reference list and at least doubled the length of the paper. The whole Highland Border issue has been argued interminably for ages (often in the Scottish Journal of Geology) and, in the end, the consensus was against Bluck's views (e.g. Henderson et al. 2009). There is no point in bringing up arguments just to shoot them down; we do not see that as a positive legacy to Bluck, whose work in fluvial sedimentology was superb.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":"124 4 1","pages":"112 - 112"},"PeriodicalIF":0.7,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1144/SJG2016-015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64033589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Geological Excursion Guide to the Stirling and Perth Area","authors":"P. Stone","doi":"10.1144/sjg2016-005","DOIUrl":"https://doi.org/10.1144/sjg2016-005","url":null,"abstract":"A Geological Excursion Guide to the Stirling and Perth Area , edited by M.A.E. Browne & C. Gillen. 2015. Edinburgh Geological Society in association with NMS Enterprises Ltd. 231 pp. ISBN 978-1-905267-88-0, £15.99.\u0000\u0000‘Stirling and Perth’ is the fourth in the series of geological excursion guides published by the Edinburgh Geological Society in association with National Museums Scotland. Its predecessors had focused on established icons of Scottish geology – Rum, the NW Highlands and the Moine succession – but this latest contribution explores the possibilities of a less-celebrated region, and demonstrates that it has much to offer. But in these days of apps and smartphones, if a traditional excursion guidebook is to succeed, it needs to simultaneously satisfy several requirements: an attractive format, clear and concise navigation and locality descriptions integrated into the broader pattern of the regional geology, and the capacity to tempt the reader along unexpected byways. How does ‘Stirling and Perth’ fare in these respects? Very well, I think.\u0000\u0000The layout of the book is familiar from the earlier excursion guides in the series and works well. There are plenty of well-chosen colour illustrations and the maps and diagrams, equally colourful, are clear and purposeful. An introduction to the local geology is followed by itineraries for 18 excursions, each of which commences with an introductory panel summarizing its overall purpose and providing useful details of logistics and complementary Ordnance Survey topographical and British Geological Survey geological maps. A location and route map with adequate geology accompanies the beginning of each itinerary (all credited to Angus Miller), which is then laid-out to a common pattern so that the book develops a consistent identity, despite being the work of 16 different contributors. Credit for this must lie with the editors. Mike …","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":"146 1","pages":"113 - 114"},"PeriodicalIF":0.7,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64033534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Discussion on ‘The Neoproterozoic to Mid-Devonian evolution of Scotland: a review and unresolved issues’ Scottish Journal of Geology, 51, 5–30","authors":"C. J. Burton","doi":"10.1144/SJG2015-015","DOIUrl":"https://doi.org/10.1144/SJG2015-015","url":null,"abstract":"A review of any field, and perhaps especially that of the evolution of the Scottish crust, should include reference to all the relevant scientific work brought to bear on that field; not excepting studies which provide alternatives to those of the authors or indeed controversial views. The review of Dewey et al. (2015), while it does not ‘attempt in-depth analyses of any terrain or tectonic topic … but mainly poses questions’ (Dewey et al. 2015, p. 5), clearly does not fit the above criteria, in that it ignores completely the many crucial arguments regarding the evolution of the Scottish crust posed by the late Professor Brian Bluck and his many co-authors over the period 1980 – 2015. Such a body of evidence-based and closely argued work should, of course, be open to challenge but it should not, and cannot be, simply ignored.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":"52 1","pages":"111 - 111"},"PeriodicalIF":0.7,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1144/SJG2015-015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64033567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evidence for pre-Caledonian discontinuities in the Achnashellach Culmination, Moine Thrust Zone: the importance of a pre-thrust template in influencing fold-and-thrust belt development","authors":"T. Cain, G. Leslie, S. Clarke, M. Kelly, M. Krabbendam","doi":"10.1144/sjg2015-002","DOIUrl":"https://doi.org/10.1144/sjg2015-002","url":null,"abstract":"South of the Loch Maree Fault in the Northwest Highlands of Scotland, an unexplained step-wise thickening of Torridon Group strata, from c. 200–1000 m, occurs towards the Loch Maree Fault, within the trailing edges of the stacked thrust sheets of the Achnashellach Culmination in the Caledonian Moine Thrust Zone. This thickening cannot be explained readily by Caledonian thrust tectonics alone, and suggests that thrusting was superimposed upon a pre-Caledonian non-layer-cake template giving rise to a thrust-parallel thickness change of Torridon Group strata in the thrust belt. Cross-section constructions within the culmination constrain discrete abrupt thickness changes of the Torridon Group succession preserved within the Coire nan Clach and Toll Ban thrust sheets. We infer the existence of a pre-existing discontinuity in the form of either a set of pre-Caledonian faults striking parallel or sub-parallel to the long-lived Loch Maree Fault in its southwestern wall, or palaeovalleys creating locally greater thicknesses of Torridon Group sediments in the pre-thrust template. Such palaeovalleys may have been eroded along pre-existing discontinuities. In either case, these discontinuities will have contributed to generating step-wise thickness changes in preserved Torridon Group strata prior to Cambro-Ordovician overstep and then contributed to controls on the observed (lateral) variations in thrust architecture and the northwards step-wise thinning of the Achnashellach Culmination towards the Loch Maree Fault. This northern termination of the Achnashellach Culmination demonstrates the importance of the pre-thrust template in constraining the three-dimensional architecture of lateral changes within fold-and-thrust belts.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":"52 1","pages":"103 - 109"},"PeriodicalIF":0.7,"publicationDate":"2016-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1144/sjg2015-002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64033683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The last glaciation in Orkney, Scotland: glacial stratigraphy, event sequence and flow paths","authors":"A. Hall, J. Riding, J. Brown","doi":"10.1144/sjg2016-002","DOIUrl":"https://doi.org/10.1144/sjg2016-002","url":null,"abstract":"Three separate till units are recognized on Orkney deposited during the last ice sheet glaciation: the Digger, Scara Taing and Quendal Till members. The Digger Till records an ice advance from the south that extended on to the Atlantic shelf. The Scara Taing Till records a later period of full ice cover when ice moved from the SE out of the Moray Firth and reached Last Glacial Maximum (LGM) limits on the shelf edge. The Quendal Till records a late phase of ice sheet flow from the SE to limits c. 20 km west of Orkney. No till unit or flow set has been identified to confirm the presence of a local ice cap on southern Orkney during the last glaciation. Whilst the blocking presence of the Fennoscandian Ice Sheet (FIS) and the Shetland Ice Cap may have contributed to the deflection of ice flow over Orkney, similar flow patterns also occurred before and after the LGM. Scandinavian erratics on northern Orkney are probably reworked and provide no direct support for the passage of the FIS. Middle to Late Carboniferous palynomorphs found in tills in eastern Orkney may have been reworked from nearby Permian mudstones.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":"52 1","pages":"101 - 90"},"PeriodicalIF":0.7,"publicationDate":"2016-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1144/sjg2016-002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64033627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The last glaciation in Caithness, Scotland: revised till stratigraphy and ice-flow paths indicate multiple ice flow phases","authors":"A. Hall, J. Riding","doi":"10.1144/sjg2016-001","DOIUrl":"https://doi.org/10.1144/sjg2016-001","url":null,"abstract":"This paper reviews existing information on the last glaciation of Caithness and presents new evidence for additional till units and for long distance ice-flow paths based on till palynomorphs, indicator erratics and striae. Early, radial expansion of Northern Highland ice probably occurred at 31 – 29 ka. After ice withdrawal from the north coast, Moray Firth ice returned before a second withdrawal. Thereafter Moray Firth ice advanced to limits close to the Atlantic shelf edge between 21 and 18 ka. Deglaciation of hill summits was completed by 18.4 – 17.8 ka but the low ground south of Wick only became ice free after 16.5 ka. Recognition of these multiple ice-flow events is consistent with the dynamic behaviour of the last ice sheet exhibited in mathematical simulations. The event sequence differs, however, from nineteenth century and recent two-stage flow set reconstructions as each main flow set is shown to represent multiple events following similar paths but under different ice sheet configurations. Various configurations allow ice to flow northwards across Caithness and so remove any requirement for the Fennoscandian Ice Sheet to directly block and divert the outflow of ice from the Moray Firth during the last glaciation.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":"52 1","pages":"77 - 89"},"PeriodicalIF":0.7,"publicationDate":"2016-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1144/sjg2016-001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64033574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New Bathonian (Middle Jurassic) sauropod remains from the Valtos Formation, Isle of Skye, Scotland","authors":"N. Clark, P. Gavin","doi":"10.1144/sjg2015-010","DOIUrl":"https://doi.org/10.1144/sjg2015-010","url":null,"abstract":"The discovery of a sauropod tooth and a single sauropod footprint from the Valtos Formation supplements our knowledge of these dinosaurs from the Middle Jurassic of the Isle of Skye. Although the family cannot be determined from this single tooth, it is thought that it represents a primitive eusauropod and may belong to a similar sauropod to that previously described from limited isolated osteological evidence (caudal vertebra, damaged humerus and a rib). The characteristics that suggest this affinity include evidence of denticles on one edge of the tooth, wrinkling and granulation of the enamel, wear suggesting crown-to-crown occlusion, and the spatulate tooth shape. The single sauropod footprint is the oldest record of a sauropod footprint from the Middle Jurassic of Skye. Supplementary material: Surface models of the sauropod footprint from the Valtos Formation produced using Agisoft Photoscan software in obj, ply and stl formats are available at: https://doi.org/10.6084/m9.figshare.c.3435984","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":"52 1","pages":"71 - 75"},"PeriodicalIF":0.7,"publicationDate":"2016-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1144/sjg2015-010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64033561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Introducing Sedimentology","authors":"C. Braithwaite","doi":"10.1144/sjg2015-008","DOIUrl":"https://doi.org/10.1144/sjg2015-008","url":null,"abstract":"","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":"52 1","pages":"69 - 70"},"PeriodicalIF":0.7,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64033514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}