Proceedings of the Estonian Academy of Sciences. Geology最新文献_第9页

BRACHIOPODS OF THE SUBFAMILY ATELELASMATINAE (CLITAMBONITACEA) FROM THE ARENIG, ORDOVICIAN, OF THE BALTIC KLINT AREA 波罗的海klint地区奥陶纪arenig的长尾亚科腕足动物

Proceedings of the Estonian Academy of Sciences. Geology Pub Date : 1900-01-01 DOI: 10.3176/geol.1994.4.04

M. Rubel, Leonid Popov

引用次数: 10

FOUR NEW BRACHIOPOD GENERA OF THE SUBFAMILY OEPIKINAE (STROPHOMENACEA) FROM THE ORDOVICIAN OF ESTONIA 文章标题爱沙尼亚奥陶系水蝶亚科腕足动物四新属

Proceedings of the Estonian Academy of Sciences. Geology Pub Date : 1900-01-01 DOI: 10.3176/geol.1993.2.02

A. Rõõmusoks

引用次数: 3

THE PLATYCERATACEAN GASTROPOD CYCLONEMA (CYCLONEMA) HIIUMAA TEICHERT, 1928 FROM THE LLANDOVERY (SILURIAN) OF ESTONIA platyceratacean腹足动物cyclonema (cyclonema) hiiumaa teichert, 1928年生于爱沙尼亚的llandovery(志留纪)

Proceedings of the Estonian Academy of Sciences. Geology Pub Date : 1900-01-01 DOI: 10.3176/geol.1995.3.04

M. Isakar

引用次数: 0

A NEW TREMATASPID OSTEOSTRACAN, AESTIASPIS VIITAENSIS n.g., n. sp., FROM THE SILURIAN OF SAAREMAA, ESTONIA 爱沙尼亚萨雷马志留纪一新种治疗aspis VIITAENSIS n.g, n.sp

Proceedings of the Estonian Academy of Sciences. Geology Pub Date : 1900-01-01 DOI: 10.3176/geol.1994.3.02

P. Janvier, H. Lelièvre

引用次数: 4

DIAGENETIC TRANSFORMATION OF CLAY MINERALS IN LOWER CAMBRIAN ARGILLACEOUS SEDIMENTS OF NORTH ESTONIA 爱沙尼亚北部下寒武统泥质沉积物中粘土矿物的成岩转化

Proceedings of the Estonian Academy of Sciences. Geology Pub Date : 1900-01-01 DOI: 10.3176/geol.1999.1.02

K. Kirsimäe, V. Kalm, Per M. Jørgensen

引用次数: 8

THE LLANDOVERY-WENLOCK BOUNDARY IN THE RUSSIAN ARCTIC 俄罗斯北极的陆海-温洛克边界

Proceedings of the Estonian Academy of Sciences. Geology Pub Date : 1900-01-01 DOI: 10.3176/geol.2000.2.03

P. Männik, A. Antoshkina, Tatyana M. Beznosova

引用次数: 5

THE ENDOSKELETON OF SHOULDER GIRDLE IN PTYCTODONTS (PLACODERMI) 齿类动物肩带的内骨骼(placodermi)

Proceedings of the Estonian Academy of Sciences. Geology Pub Date : 1900-01-01 DOI: 10.3176/geol.1991.4.04

A. Ivanov, E. Mark-Kurik, O. Obrucheva

引用次数: 2

Chronological data from Estonian Pleistocene 爱沙尼亚更新世的年代资料

Proceedings of the Estonian Academy of Sciences. Geology Pub Date : 1900-01-01 DOI: 10.3176/geol.2005.1.02

V. Kalm

{"title":"Chronological data from Estonian Pleistocene","authors":"V. Kalm","doi":"10.3176/geol.2005.1.02","DOIUrl":"https://doi.org/10.3176/geol.2005.1.02","url":null,"abstract":". Pleistocene chronostratigraphy in Estonia is based on 60 radiocarbon ( 14 C, 14 C AMS), 63 TL/OSL, and 17 10 Be datings from 57 studied sites/sections that cover a time span from approximately 200 000 yr BP to the Pleistocene–Holocene chronostratigraphic boundary. For the first time all scattered data from 40 years of chronological study into Estonian Pleistocene are presented together and critically analysed in regard to validity of obtained ages. Half of the relatively abundant but scattered chronological data cover only the youngest 5000–6000 year part of the Late Weichselian. New OSL datings, together with the results of earlier palynological, carpological, and diatom studies, have invalidated almost one-third of the available 14 C dates, obtained mostly in the late 1960s and 1970s. Thermoluminescence ages from tills, available from the early 1980s, are very inconsistent within the studied sections and are considered to be unreliable because of questionable bleaching of the TL signal. The results of the 10 Be method, recently applied to the study of deglaciation chronology of the Estonian territory, do not contradict the earlier age estimations. However, due to relatively large uncertainties of the method, the results were not able to refine the existing Late-Glacial chronology in Estonia.","PeriodicalId":237994,"journal":{"name":"Proceedings of the Estonian Academy of Sciences. Geology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129857915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

NEW DATA ON CONODONTS, BRACHIOPODS, AND OSTRACODES FROM THE STRATOTYPES OF THE ILMEN AND BUREGI BEDS (FRASNIAN, MAIN DEVONIAN FIELD) 伊尔曼和布里吉地层层型中牙形虫、腕足类和介形虫的新资料(frasen，主泥盆系)

Proceedings of the Estonian Academy of Sciences. Geology Pub Date : 1900-01-01 DOI: 10.3176/geol.1997.4.02

I. Evdokimova, E. Sokiran, Andrey V. Zhuravlev

引用次数: 8

Holocene buried organic sediments in Estonia 爱沙尼亚全新世埋藏有机沉积物

Proceedings of the Estonian Academy of Sciences. Geology Pub Date : 1900-01-01 DOI: 10.3176/geol.2006.4.03

L. Saarse, J. Vassiljev, A. Miidel, E. Niinemets

{"title":"Holocene buried organic sediments in Estonia","authors":"L. Saarse, J. Vassiljev, A. Miidel, E. Niinemets","doi":"10.3176/geol.2006.4.03","DOIUrl":"https://doi.org/10.3176/geol.2006.4.03","url":null,"abstract":"An overview of 85 sites of Holocene buried organic sediments in Estonia is presented. This number includes 45 sites of pre-Ancylus and Ancylus age, which were buried during the Ancylus transgression, 31 sites of pre-Litorina and Litorina age, buried under Litorina transgression sediments, and 9 sites formed after post-Litorina time and mostly covered by aeolian sand. According to radiocarbon dates, the Ancylus Lake transgression started about 9500 yr BP (10 800 cal BP), and culminated several hundred years later. Around 9000 yr BP (10 100 cal BP) a rather rapid regression followed. Its magnitude reached up to 30 m in the areas of rapid uplift. Pollen spectra of these beds are characterized by a high frequency of Pinus pollen, which seems to be typical of the coastal waterbodies of this age and confuses determination of their Preboreal age. 14 C dates of Litorina buried beds differ considerably. We have evidence that the Litorina transgression started about 7500-7000 yr BP (8300-7800 cal BP) and culminated at different times in different regions. Pollen spectra of Litorina buried organic strata vary considerably between sites; however, their Atlantic age is easily discernible. The simulated isobases of the Ancylus Lake and Litorina Sea shorelines and organic beds showed discrepancy in the surroundings of Parnu and Narva bays.","PeriodicalId":237994,"journal":{"name":"Proceedings of the Estonian Academy of Sciences. Geology","volume":"44 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130740069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20