Scottish Journal of Geology最新文献

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James Hutton. The Founder of Modern Geology, by Alan McKirdy. National Museums Scotland, Edinburgh. 2022 詹姆斯·赫顿。《现代地质学的创始人》,作者Alan McKirdy。苏格兰国家博物馆,爱丁堡。2022
IF 0.7 4区 地球科学
Scottish Journal of Geology Pub Date : 2022-04-29 DOI: 10.1144/sjg2022-008
P. Stone
{"title":"James Hutton. The Founder of Modern Geology, by Alan McKirdy. National Museums Scotland, Edinburgh. 2022","authors":"P. Stone","doi":"10.1144/sjg2022-008","DOIUrl":"https://doi.org/10.1144/sjg2022-008","url":null,"abstract":"James Hutton's reputation is widely recognised in geological circles internationally, but in his introductory chapter, Alan McKirdy laments the contradiction that such an important character of the Scottish Enlightenment does not enjoy equivalent celebrity in his homeland. The attractive new edition of National Museums Scotland's biography should go some way towards correcting that imbalance, and in view of the 2026 tercentenary of Hutton's birth the publication is timely. A cross-corner banner on the front cover promises “revised and expanded” and, relative to the first edition of 1997 and its subsequent revisions, the claim is certainly justified.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45639749","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}
引用次数: 0
Temporal and spatial variations in calcium carbonate deposition in a mixed siliciclastic–carbonate deep marine system: the Ediacaran Deeside Limestone Formation, Aboyne, Scotland 石英-碳酸盐混合海洋体系中碳酸钙沉积的时空变化:埃迪卡拉纪Deeside石灰岩组,苏格兰Aboyne
IF 0.7 4区 地球科学
Scottish Journal of Geology Pub Date : 2022-04-29 DOI: 10.1144/sjg2021-017
S. J. Drake, E. Gomez‐Rivas, R. Ickert, D. Macdonald
{"title":"Temporal and spatial variations in calcium carbonate deposition in a mixed siliciclastic–carbonate deep marine system: the Ediacaran Deeside Limestone Formation, Aboyne, Scotland","authors":"S. J. Drake, E. Gomez‐Rivas, R. Ickert, D. Macdonald","doi":"10.1144/sjg2021-017","DOIUrl":"https://doi.org/10.1144/sjg2021-017","url":null,"abstract":"The Deeside Limestone Formation (DLF), outcropping in western Aberdeenshire, comprises the eastern margin of a distinctive Upper Dalradian mixed siliciclastic–carbonate system of Ediacaran age which may be correlated southwestwards for more than 400 km to County Donegal in Ireland. A reconstructed stratigraphic column suggests three broad vertical sequences (S1–S3), each comprising a general upward proportionate increase in calcium carbonate with respect to quartz, locally capped by metalimestones (L1–L3). A simple explanation for this upward change lies in the differing physical response of the two heterolithic components under the same hydrodynamic process, with the heavier quartz grains preferentially enriching the bedload and the finer carbonate mud fraction, the suspended load. The three metalimestone intervals are observed only in central/eastern parts of the field area, suggesting a lateral facies variation. The predominance of calcareous–siliciclastic bed-scale compositional mixing within the DLF suggests sedimentation on the Dalradian shelf comprised contemporaneous mixing of the siliciclastic and carbonate fractions prior to subsequent re-mixing during transportation downslope into the deep water, punctuated by pulses of point-sourced siliciclastic input.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47352825","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}
引用次数: 0
Mush ado about the Ratagain Complex, NW Scotland: insights into Caledonian granitic magmatism and emplacement from magnetic fabric analyses 苏格兰西北部Ratagain杂岩的混乱:从磁性结构分析中了解加里东花岗岩岩浆作用和侵位
IF 0.7 4区 地球科学
Scottish Journal of Geology Pub Date : 2022-04-19 DOI: 10.1144/sjg2021-018
A. Lawrence, M. Maffione, C. Stevenson
{"title":"Mush ado about the Ratagain Complex, NW Scotland: insights into Caledonian granitic magmatism and emplacement from magnetic fabric analyses","authors":"A. Lawrence, M. Maffione, C. Stevenson","doi":"10.1144/sjg2021-018","DOIUrl":"https://doi.org/10.1144/sjg2021-018","url":null,"abstract":"The anisotropy of magnetic susceptibility (AMS) is used to reveal subtle mineral alignment fabrics in apparently isotropic crystalline lithologies, including granites. Such petrofabrics can be produced by emplacement-related magma flow or post-emplacement tectonic strain. However, discriminating between flow-related and tectonic fabrics using field observations alone may be challenging and is usually a broad and arbitrary interpretation. In this contribution, we employ a range of magnetic analyses to characterize the origin of the petrofabric in the c. 425 Ma Ratagain Complex, NW Scotland, a composite Late Caledonian granitic intrusion. Our detailed magnetic analyses reveal that whilst all intrusive units carry an ambient tectonic overprint, critically, this has not developed into an obvious tectonic fabric and contains a horizontal shortening component indicative of transpression. This appears at odds with the well-defined Silurian (Scandian phase) regional transtensional tectonic regime from c. 420–415 Ma onwards. Accordingly, we suggest that either the complex is younger than previously thought or that it existed as a crystal-mush close to the magmatic solidus for a protracted period after its initial emplacement. This study lays the foundations for much-needed further investigations into the detailed emplacement mechanisms, timescales and petrogenesis of individual granitic intrusions, to aid understanding of Late Caledonian tectonics. Supplementary material: Supplementary data to this article are available at https://doi.org/10.6084/m9.figshare.c.5941375 Thematic collection: This article is part of the Early Career Research collection available at: https://www.lyellcollection.org/cc/SJG-early-career-research","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48279393","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}
引用次数: 2
A regional explanation for Laxfordian tectonic evolution and its implications for the Lewisian terrane model 拉克斯福特构造演化的区域解释及其对刘易斯地体模式的启示
IF 0.7 4区 地球科学
Scottish Journal of Geology Pub Date : 2022-03-18 DOI: 10.1144/sjg2021-020
G. Park
{"title":"A regional explanation for Laxfordian tectonic evolution and its implications for the Lewisian terrane model","authors":"G. Park","doi":"10.1144/sjg2021-020","DOIUrl":"https://doi.org/10.1144/sjg2021-020","url":null,"abstract":"The later Paleoproterozoic (Laxfordian) structural and metamorphic history of the Lewisian Complex can be explained by several major kinematic changes. At c. 1.9 Ga, the neighbouring Archean cratons of Rae, North Atlantic (NAC), Kola and Karelia were isolated from each other and subduction and accretion were active at their margins. At c. 1.85 Ga, during the ‘Early Laxfordian’, the Lewisian, then part of the Nagssugtoqidian orogenic belt, experienced NW–SE-directed tectonic movements attributed to east–west convergence between the Rae Craton and the NAC, probably prompted by collision with Baltica. At c. 1.7 Ga, during the ‘Late Laxfordian’, a major change to north–south convergence produced a combination of NW–SE-trending folds and NW–SE dextral shear zones. The kinematic system changed again after c. 1.6 Ga. The latter two changes may be attributable to the docking of further large cratons as the Nuna supercontinent was assembled. The Lewisian terrane model can be interpreted in terms of the relative movements between two major cratons, Rae and NAC. Sandwiched between them was a third, composed of material partly derived from a juvenile magmatic arc or arcs situated in oceanic crust. The Assynt terrane may be an isolated remnant of the upper-plate NAC, whereas most of the remaining Lewisian outcrop may consist of modified Rae material.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":"24 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64034176","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}
引用次数: 1
Facies analysis of the Greywacke Conglomerate Formation, Glenbuck, Scotland 苏格兰Glenbuck地区Greywacke砾岩组相分析
IF 0.7 4区 地球科学
Scottish Journal of Geology Pub Date : 2022-01-25 DOI: 10.1144/sjg2021-010
A. Mitten, A. Gough, A. Leslie, S. Clarke, M. Browne
{"title":"Facies analysis of the Greywacke Conglomerate Formation, Glenbuck, Scotland","authors":"A. Mitten, A. Gough, A. Leslie, S. Clarke, M. Browne","doi":"10.1144/sjg2021-010","DOIUrl":"https://doi.org/10.1144/sjg2021-010","url":null,"abstract":"The early Devonian Greywacke Conglomerate Formation of the Lanark Basin, southwestern Midland Valley of Scotland, has been exposed by a new road cut in the Glenbuck area, East Ayrshire, enabling a high-resolution sedimentological analysis of this unusually high-quality section. This study provides a facies analysis of the sedimentary rocks exposed in the Glenbuck area, and comparison with contemporaneous bedrock sections from across the Lanark Basin and adjacent Southern Upland High. Eleven lithofacies are identified, grouped into five associations: aggradational talus cone, progradational talus cone, debris flow lobe, fan surface aqueous-alluvial deposits, and gravel barform deposits. These comprise medial and proximal alluvial fan deposits, controlled by autogenic scour and avulsion along with general fan progradation. Contemporaneous sediments are present around Silurian inliers in the Lanark Basin and adjacent regions of the Southern Upland High. Whilst deposits in the Lanark Basin are genetically similar, contemporaneous deposits of the Southern Upland High preserve a distinctly more angular clast assemblage, indicating textural immaturity relative to those in the Lanark Basin.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":"58 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41961016","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}
引用次数: 1
Reply to discussion on ‘Deglaciation and neotectonics in SE Raasay, Scottish Inner Hebrides’, by Smith et al. 2021 (SJG, 57, 106–116) 对Smith等人关于“苏格兰内赫布里底群岛SE Raasay冰川消融与新构造”讨论的答复,2021 (SJG, 57, 106-116)
IF 0.7 4区 地球科学
Scottish Journal of Geology Pub Date : 2021-10-22 DOI: 10.1144/sjg2021-014
David E. Smith, C. Firth, T. Mighall, P. Teasdale
{"title":"Reply to discussion on ‘Deglaciation and neotectonics in SE Raasay, Scottish Inner Hebrides’, by Smith et al. 2021 (SJG, 57, 106–116)","authors":"David E. Smith, C. Firth, T. Mighall, P. Teasdale","doi":"10.1144/sjg2021-014","DOIUrl":"https://doi.org/10.1144/sjg2021-014","url":null,"abstract":"We greatly appreciate Dr Morton's interest in our paper and his appreciative comments. The features at Beinn na Leac are, in our opinion, of particular interest to geologists interested in the pattern of deglaciation and neotectonics in this part of western Scotland. The location is unique in Scotland in the magnitude of Younger Dryas/Holocene fault dislocation. We respond to Dr Morton's comments as follows:","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47564599","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}
引用次数: 0
Discussion on ‘Deglaciation and neotectonics in SE Raasay, Scottish Inner Hebrides’ by Smith et al. 2021 (SJG, 57, 106–116) Smith et al. 2021关于“苏格兰内赫布里底群岛SE Raasay冰川消融与新构造”的讨论(SJG, 57, 106-116)
IF 0.7 4区 地球科学
Scottish Journal of Geology Pub Date : 2021-10-07 DOI: 10.1144/sjg2021-013
N. Morton
{"title":"Discussion on ‘Deglaciation and neotectonics in SE Raasay, Scottish Inner Hebrides’ by Smith et al. 2021 (SJG, 57, 106–116)","authors":"N. Morton","doi":"10.1144/sjg2021-013","DOIUrl":"https://doi.org/10.1144/sjg2021-013","url":null,"abstract":"I congratulate David Smith and his colleagues (2021) on an excellent presentation of their work on the evolution of the morphology and events involved in the evolution of the Beinn na Leac area in south-east Raasay. The summit area is a difficult and even dangerous area to work in, as I know from personal experience – learning to only follow sheep tracks to avoid the many deep fissures with openings often hidden by vegetation.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":"57 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41959506","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}
引用次数: 0
Radiocarbon dating of a composite multi-period debris cone stratigraphy in the Lochan na Lairige, Ben Lawers Ben Lawers Lochan na Lairige多期复合碎屑锥地层学的放射性碳年代测定
IF 0.7 4区 地球科学
Scottish Journal of Geology Pub Date : 2021-08-24 DOI: 10.1144/sjg2021-008
R. Tipping
{"title":"Radiocarbon dating of a composite multi-period debris cone stratigraphy in the Lochan na Lairige, Ben Lawers","authors":"R. Tipping","doi":"10.1144/sjg2021-008","DOIUrl":"https://doi.org/10.1144/sjg2021-008","url":null,"abstract":"An early stage in formation of a composite debris cone in the glacial trough of the Lochan na Lairige, on Ben Lawers, is 14C dated to 6398–6225 cal years BP. A large proportion of the debris cone comprises a structureless gravel with boulders, possibly deposited in a single event. Blanket peat formed on the debris cone surface at 3820–3496 cal years BP. Sediment slurries are recorded across the peat after this time, at c. 3950–c. 3100, c. 2000 and c. 1400 cal years BP, and at c. 1200–c. 1100 cal years BP. They were much less significant events. They can be related to periods of higher effective precipitation in the region.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49283546","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}
引用次数: 0
First report of fish trace fossils (Undichna) from the Middle Devonian Achanarras Limestone, Caithness Flagstone Group 中泥盆世Caithness石板群Achanarras石灰岩鱼迹化石(Undichna)首次报道
IF 0.7 4区 地球科学
Scottish Journal of Geology Pub Date : 2021-08-10 DOI: 10.1144/sjg2020-023
Benjamin H. Tindal, Anthony P. Shillito, N. Davies
{"title":"First report of fish trace fossils (Undichna) from the Middle Devonian Achanarras Limestone, Caithness Flagstone Group","authors":"Benjamin H. Tindal, Anthony P. Shillito, N. Davies","doi":"10.1144/sjg2020-023","DOIUrl":"https://doi.org/10.1144/sjg2020-023","url":null,"abstract":"Two newly discovered specimens of the fish locomotion trace Undichna (U. britannica and Undichna isp.) are described from the Middle Devonian Achanarras Limestone Member (Caithness Flagstone Group, NE Scotland). Fish trace fossils have not previously been reported from the Achanarras Limestone Member, despite decades of study of the unit as a key locality for fish body fossils. The traces comprise discontinuous sinusoidal grooves; one showing multiple parallel incisions, created by the fins of an acanthodian fish swimming close to the substrate. The apparent absence of trace fossils attributable to infaunal or epifaunal benthic organisms suggests that the sediment at the bottom of the lake was relatively inhospitable. The low ichnodiversity of the Achanarras Limestone Member is likely due to low oxygen levels in the depositional environment. Thematic collection: This article is part of the SJG Early Career Research available at: https://www.lyellcollection.org/cc/SJG-early-career-research","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42391068","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}
引用次数: 1
Reply to discussion on ‘Borehole temperature log from the Glasgow Geothermal Energy Research Field Site: a record of past changes to ground surface temperature caused by urban development’ by Watson and Westaway 2020 (SJG, 56, 134–152) 对Watson和Westaway 2020(SJG,56134-152)关于“格拉斯哥地热能研究现场钻孔温度日志:城市发展导致地表温度过去变化的记录”的讨论的回复
IF 0.7 4区 地球科学
Scottish Journal of Geology Pub Date : 2021-06-16 DOI: 10.1144/sjg2020-031
R. Westaway
{"title":"Reply to discussion on ‘Borehole temperature log from the Glasgow Geothermal Energy Research Field Site: a record of past changes to ground surface temperature caused by urban development’ by Watson and Westaway 2020 (SJG, 56, 134–152)","authors":"R. Westaway","doi":"10.1144/sjg2020-031","DOIUrl":"https://doi.org/10.1144/sjg2020-031","url":null,"abstract":"Watson and Westaway (2020) (WW) quantified subsurface temperature variations caused by anthropogenic climate change and urban/industrial development in Glasgow, using temperature data from the Glasgow Geothermal Energy Research Field Site (GGERFS) well GGC-01 (at site G-10; Fig. 1), noting implications for the thermal physics of this site. Monaghan et al. (2021) (MMS) have queried points, noted in passing by WW, on other aspects: the GGERFS purpose, location, design, heat resource and cost.","PeriodicalId":49556,"journal":{"name":"Scottish Journal of Geology","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44195995","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}
引用次数: 0
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