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Estonian Journal of Earth Sciences最新文献

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The Ordovician System: From overlapping unit stratotypes to Global Boundary Stratotype Sections and Points 奥陶系:从重叠单元层型到全球边界层型剖面和点
IF 1.1 4区 地球科学
Estonian Journal of Earth Sciences Pub Date : 2023-01-01 DOI: 10.3176/earth.2023.75
D. Harper, T. Meidla, T. Servais
{"title":"The Ordovician System: From overlapping unit stratotypes to Global Boundary Stratotype Sections and Points","authors":"D. Harper, T. Meidla, T. Servais","doi":"10.3176/earth.2023.75","DOIUrl":"https://doi.org/10.3176/earth.2023.75","url":null,"abstract":"","PeriodicalId":50498,"journal":{"name":"Estonian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83817543","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
Echinoderm Lagerstätten from high-latitude Gondwana – filling the gap in the Ordovician diversification of the phylum 来自高纬度冈瓦纳的棘皮动物Lagerstätten——填补了奥陶纪门多样化的空白
IF 1.1 4区 地球科学
Estonian Journal of Earth Sciences Pub Date : 2023-01-01 DOI: 10.3176/earth.2023.45
M. Nohejlová, C. Dupichaud, B. Lefebvre, E. Nardin, F. Saleh
{"title":"Echinoderm Lagerstätten from high-latitude Gondwana – filling the gap in the Ordovician diversification of the phylum","authors":"M. Nohejlová, C. Dupichaud, B. Lefebvre, E. Nardin, F. Saleh","doi":"10.3176/earth.2023.45","DOIUrl":"https://doi.org/10.3176/earth.2023.45","url":null,"abstract":"","PeriodicalId":50498,"journal":{"name":"Estonian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87690059","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
Middle–Late Ordovician organic- walled phytoplankton from Sweden: diversity and early radiation 瑞典中晚奥陶世有机壁浮游植物:多样性与早期辐射
IF 1.1 4区 地球科学
Estonian Journal of Earth Sciences Pub Date : 2023-01-01 DOI: 10.3176/earth.2023.42
C. V. Rubinstein, V. Vajda
{"title":"Middle–Late Ordovician organic- walled phytoplankton from Sweden: diversity and early radiation","authors":"C. V. Rubinstein, V. Vajda","doi":"10.3176/earth.2023.42","DOIUrl":"https://doi.org/10.3176/earth.2023.42","url":null,"abstract":"The Borenshult-1 core, drilled in the vicinity of Motala, east of Lake Vättern in south central Sweden, comprises a well-dated and nearly complete succession of marine marly carbonates deposited relatively close to land. The 34 core samples analyzed for palynology encompass the upper part of the Darriwilian (Furudal Limestone), the entire Sandbian (Dalby Limestone, the Kinnekulle K-bentonite and the lower Skagen Limestone) and the lower part of the Katian (Skagen Limestone). The age of this interval is well-constrained to the late Darriwilian (Stage slice Dw3)– early Katian (Stage slice Ka1 ) , based on conodonts and 206Pb/238U dating of volcanic ash deposits. The samples yielded predominantly marine organic-walled phytoplankton, mainly acritarchs, with subordinate chitinozoans, scolecodonts and fragments of graptolites. Sparse terrestrial palynomorphs, represented by cryptospores and trilete spores, were also found in 23 of the samples. A total of 154 acritarch species corresponding to 53 genera were identified, as well as low percentages of abnormal forms ( teratological forms) of acritarch species at some levels. The strati graphic distribution of genera and species allowed for three palynological assemblages to be distinguished: Assemblage A of a late Darriwilian age, Assemblage B of a Sandbian age ( further subdivided into sub-assemblages B1 and B2 ) , and Assemblage C dated as Katian.","PeriodicalId":50498,"journal":{"name":"Estonian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90830188","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
Ordovician stratigraphy of the Junee–Narromine Volcanic Belt in central New South Wales, Australia: conodont studies and regional correlations 澳大利亚新南威尔士州中部朱尼-纳洛明火山带奥陶纪地层:牙形石研究与区域对比
IF 1.1 4区 地球科学
Estonian Journal of Earth Sciences Pub Date : 2023-01-01 DOI: 10.3176/earth.2023.11
Y. Zhen, I. Percival
{"title":"Ordovician stratigraphy of the Junee–Narromine Volcanic Belt in central New South Wales, Australia: conodont studies and regional correlations","authors":"Y. Zhen, I. Percival","doi":"10.3176/earth.2023.11","DOIUrl":"https://doi.org/10.3176/earth.2023.11","url":null,"abstract":"This contribution reviews the newly revised biostratigraphy of Middle–Upper Ordovician marine shelf successions from the Junee–Narromine Volcanic Belt in central New South Wales, based on conodont studies from four areas covering the northern, central and southern sectors of the Belt. Seven conodont biozones ranging from the middle Darriwilian ( Histiodella holodentata-Eoplacognathus pseudoplanus Biozone) to the lower Katian ( Taoqupognathus blandus Biozone) are recognized in the Billabong Creek Formation exposed in the Gunningbland area. This includes the first known biostratigraphic succession in Australia that extends continuously from the middle Darriwilian to the basal Sandbian. These new data are crucial for a better understanding of the geological evolution of this region in central New South Wales, and for the enhanced correlation of Ordovician rocks throughout the Macquarie Volcanic Province, which hosts substantial porphyry Cu–Au mineral deposits.","PeriodicalId":50498,"journal":{"name":"Estonian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84373439","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
Siphonotretoid brachiopods – a thorny problem 管状臂足类——一个棘手的问题
IF 1.1 4区 地球科学
Estonian Journal of Earth Sciences Pub Date : 2023-01-01 DOI: 10.3176/earth.2023.02
L. Holmer, L. Popov, M. G. Pour, Y. Liang, Z. Zhang
{"title":"Siphonotretoid brachiopods – a thorny problem","authors":"L. Holmer, L. Popov, M. G. Pour, Y. Liang, Z. Zhang","doi":"10.3176/earth.2023.02","DOIUrl":"https://doi.org/10.3176/earth.2023.02","url":null,"abstract":"Received 21 March 2023 Accepted 30 March 2023 Available online 8 June 2023","PeriodicalId":50498,"journal":{"name":"Estonian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91341366","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
Tectonic, foreland-basin origins of Upper Ordovician black gas shales in the Appalachian Basin of eastern United States 美国东部阿巴拉契亚盆地上奥陶统黑色页岩的构造、前陆-盆地成因
IF 1.1 4区 地球科学
Estonian Journal of Earth Sciences Pub Date : 2023-01-01 DOI: 10.3176/earth.2023.64
F. Ettensohn, G. Martins
{"title":"Tectonic, foreland-basin origins of Upper Ordovician black gas shales in the Appalachian Basin of eastern United States","authors":"F. Ettensohn, G. Martins","doi":"10.3176/earth.2023.64","DOIUrl":"https://doi.org/10.3176/earth.2023.64","url":null,"abstract":"Black gas shales are major parts of many foreland-basin sequences and comprise important components of unconformity-bound tectophase cycles, which reflect sedimentary/stratigraphic, flexural responses to deformational loading and relaxation in an orogen. Using as examples Upper Ordovician black gas shales, deposited during the Taconian orogeny in the Appalachian Basin of the eastern United States, black-shale origins and their importance in understanding the tectonic framework are discussed. Foreland-basin black shales are clearly the product of distinctive tectonic frameworks and histories, and aside from economic value, may provide important controls on the timing and location of tectonic events.","PeriodicalId":50498,"journal":{"name":"Estonian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90595369","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
Advances in the Lower Ordovician of the western Iberian Chain, NE Spain 西班牙东北部西伊比利亚链下奥陶统的进展
IF 1.1 4区 地球科学
Estonian Journal of Earth Sciences Pub Date : 2023-01-01 DOI: 10.3176/earth.2023.15
J. Álvaro, Blanca Martínez-Benítez
{"title":"Advances in the Lower Ordovician of the western Iberian Chain, NE Spain","authors":"J. Álvaro, Blanca Martínez-Benítez","doi":"10.3176/earth.2023.15","DOIUrl":"https://doi.org/10.3176/earth.2023.15","url":null,"abstract":"The western Iberian Chain of NE Spain represents a lateral prolongation of the West AsturianLeonese Zone. As other proximal sectors fringing NW Gondwana, the chain comprises a con formable and continuous Furongian‒Tremadocian transition, comprising a thick (3600‒4500 m) Lower Ordovician sedimentary succession, exclusively composed of siliciclastic strata and deposited in mid-latitude (temperate) waters. Although the shelly fossil record is not abun dant, some key trilobites and brachiopods allow the identification of distinct biogeographic links with the Argentinian margin of West Gondwana, Oaxaca (Mexico), and the neighbouring Montagne Noire (France), with which a common biostratigraphic biozonation can be en vis aged. Two phosphoritic interbeds rich in linguliformean brachiopods punctuate the Valconchán and Borrachón formations, and represent event beds related to condensation processes and sedimentation of explosive ignimbritic tuffs, respectively.","PeriodicalId":50498,"journal":{"name":"Estonian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79969883","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
On future directions of Ordovician chitinozoan research 奥陶系几丁质动物研究的未来方向
IF 1.1 4区 地球科学
Estonian Journal of Earth Sciences Pub Date : 2023-01-01 DOI: 10.3176/earth.2023.34
Y. Liang, O. Hints, J. Nõlvak, P. Tang
{"title":"On future directions of Ordovician chitinozoan research","authors":"Y. Liang, O. Hints, J. Nõlvak, P. Tang","doi":"10.3176/earth.2023.34","DOIUrl":"https://doi.org/10.3176/earth.2023.34","url":null,"abstract":"","PeriodicalId":50498,"journal":{"name":"Estonian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79327679","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
A remarkable new halichondrid demosponge, Ptilospongia hemisphaeroidalis, from the latest Ordovician Beigong Biota, South China 中国南方奥陶系北宫生物群最新发现的一种显著的半海绵体
IF 1.1 4区 地球科学
Estonian Journal of Earth Sciences Pub Date : 2023-01-01 DOI: 10.3176/earth.2023.76
L. Li, J. Reitner
{"title":"A remarkable new halichondrid demosponge, Ptilospongia hemisphaeroidalis, from the latest Ordovician Beigong Biota, South China","authors":"L. Li, J. Reitner","doi":"10.3176/earth.2023.76","DOIUrl":"https://doi.org/10.3176/earth.2023.76","url":null,"abstract":"","PeriodicalId":50498,"journal":{"name":"Estonian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74010254","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
Variations in wind velocity components and average air flow properties at Estonian coastal stations in 1966–2021; Sõrve Peninsula case study 1966-2021年爱沙尼亚沿海站风速分量和平均气流特性的变化Sõrve半岛案例研究
4区 地球科学
Estonian Journal of Earth Sciences Pub Date : 2023-01-01 DOI: 10.3176/earth.2023.85
Ü Suursaar
{"title":"Variations in wind velocity components and average air flow properties at Estonian coastal stations in 1966–2021; Sõrve Peninsula case study","authors":"Ü Suursaar","doi":"10.3176/earth.2023.85","DOIUrl":"https://doi.org/10.3176/earth.2023.85","url":null,"abstract":"","PeriodicalId":50498,"journal":{"name":"Estonian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135104314","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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