{"title":"Latest Sandbian brachiopods and chitinozoan biostratigraphy in North Estonia","authors":"L. Hints, J. Nõlvak","doi":"10.3176/earth.2023.50","DOIUrl":null,"url":null,"abstract":"The latest Sandbian brachiopods and chitinozoans were studied in the Kõrgessaare and Haapsalu drill cores of Estonia. The brachiopod fauna shows a gradual renewal through the Keila Regional Stage ( RS ) , differently from the rather persistent association of chitinozoans. An exception is the uppermost part of the stage, which differs in two sections in the taxonomic composition of chitinozoans and the occurrence of two species-level taxa of the Dalmanella kegelensis brachiopod group. D. kegelensis sensu lato has been considered an index taxon of the biozone in the Keila RS. It links the brachiopod faunas of North Estonia to those in NW Russia. In the latter region, the dolomitic and siliciclastic lagoonal and peritidal deposits overlying the strata with brachiopods of the D. kegelensis group are considered the youngest part of the Keila RS.","PeriodicalId":50498,"journal":{"name":"Estonian Journal of Earth Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.9000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Estonian Journal of Earth Sciences","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.3176/earth.2023.50","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 1
Abstract
The latest Sandbian brachiopods and chitinozoans were studied in the Kõrgessaare and Haapsalu drill cores of Estonia. The brachiopod fauna shows a gradual renewal through the Keila Regional Stage ( RS ) , differently from the rather persistent association of chitinozoans. An exception is the uppermost part of the stage, which differs in two sections in the taxonomic composition of chitinozoans and the occurrence of two species-level taxa of the Dalmanella kegelensis brachiopod group. D. kegelensis sensu lato has been considered an index taxon of the biozone in the Keila RS. It links the brachiopod faunas of North Estonia to those in NW Russia. In the latter region, the dolomitic and siliciclastic lagoonal and peritidal deposits overlying the strata with brachiopods of the D. kegelensis group are considered the youngest part of the Keila RS.
期刊介绍：
The Estonian Journal of Earth Sciences is an international scientific open access journal published by the Estonian Academy of Sciences in collaboration with the Tallinn University of Technology, the University of Tartu, the Estonian University of Life Sciences and the Talllinn University.
The journal publishes primary research and review papers in the English language. All articles are provided with short Estonian summaries.
All papers to be published in the journal are peer reviewed internationally.
The journal is open for publications in all fields of Earth sciences, including besides different geological sensu lato disciplines, also geography and oceanography having certain connection with our part of the world, North Europe and the Baltic area in particular.
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