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  Estonian Journal of Earth Sciences

ISSN 1736-7557 (electronic)  ISSN 1736-4728 (print)
An international scientific journal

Formerly: Proceedings of the Estonian Academy of Sciences, Geology
Published since 1952

Estonian Journal of Earth Sciences

ISSN 1736-7557 (electronic)  ISSN 1736-4728 (print)
An international scientific journal

Formerly: Proceedings of the Estonian Academy of Sciences, Geology
Published since 1952

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New evidence of an early Pridoli barrier reef in the southern part of the Baltic Silurian basin based on three-dimensional seismic survey, Lithuania; pp. 47–55

(Full article in PDF format) doi: 10.3176/earth.2015.09


Authors

Donatas Kaminskas, Dainius Michelevičius, Nerijus Blažauskas

Abstract

Reefs and a barrier reef have been newly identified and mapped by three-dimensional (3D) seismic survey in Lithuania. Seismic data analysis has allowed the size and geometry of these reefs to be determined. The largest reefs occur at Pavasaris and South Bliudziai. They have a similar shape and are about 1.5 km long and 1 km wide. A circle-shaped smaller patch reef at North Bliudziai is 1 km in diameter. The overall heights of the studied structures do not exceed 30–40 m. The reefs consist of coarse-grained bioclastic stromatoporoid limestone. A barrier reef rising structurally from SW to NE was established in the west of the mapped area. The stratigraphic position (early Minija Regional Stage) and lateral distribution of the barrier reef suggest it started to form earlier than the group of patch reefs. The development of patch reefs was related to the transgression of the Silurian Baltic basin.

Keywords

Silurian, Baltic basin, Pridoli, barrier reef, three-dimensional seismics.

References

Bjerkeus , M. & Eriksson , M. 2001. Late Silurian reef develop­ment in the Baltic Sea. GFF , 123 , 169–179.
http://dx.doi.org/10.1080/11035890101233169

Bičkauskas , G. & Molenaar , N. 2008a. The nature of the so-called ‘reefs’ in the Přidolian carbonate system of the Silurian Baltic basin. Geologija (Vilnius) , 50 , 94–104.
http://dx.doi.org/10.2478/v10056-008-0013-6

Bičkauskas , G. & Molenaar , N. 2008b. Facies and depositional environment of the Přidoli carbonate ramp in the Silurian Baltic basin , Lithuania. Geologija (Vilnius) , 50 , 264–274.
http://dx.doi.org/10.2478/v10056-008-0052-z

Calner , M. , Jeppsson , L. & Munnecke , A. 2004. The Silurian of Gotland – Part I: review of the stratigraphic framework , event stratigraphy , and stable carbon and oxygen isotope development. Erlanger Geologische Abhandlungen , Sonderband , 5 , 113–131.

Cocks , L. R. M. & Torsvik , T. H. 2005. Baltica from the late Precambrian to mid-Palaezoic times: the gain and loss of a terrane’s identity. Earth Science Reviews , 72 , 39–66.
http://dx.doi.org/10.1016/j.earscirev.2005.04.001

Cordsen , A. , Galbraith , M. & Peirce , J. 2000. Planning Land 3-D Seismic Surveys. Society of Exploration Geophysicists , 204 pp.
http://dx.doi.org/10.1190/1.9781560801801

Flodén , T. , Bjerkeus , M. , Tuuling , I. & Eriksson , M. 2001. A Silurian reefal succession in the Gotland area , Baltic Sea. GFF , 123 , 137–152.
http://dx.doi.org/10.1080/11035890101233137

Kaljo , D. 1977. Facies and Fauna of the Baltic Silurian. Academy of Sciences of the Estonian S.S.R. , Tallinn , 286 pp.

Kershaw , S. 1993. Sedimentation control on growth of stromato­poroid reefs in the Silurian of Gotland , Sweden. Journal of the Geological Society , 150 , 197–205.
http://dx.doi.org/10.1144/gsjgs.150.1.0197

Lapinskas , P. 1987a. Silurijskaya sistema [The Silurian system]. In Neftyanie mestorozhdeniya Pribaltiki [Oil Deposits of the Baltic Area] (Vosilyusa , G. B. , ed.) , pp. 35–46. Mokslas , Vilnius [in Russian].

Lapinskas , P. 1987b. Formatsii silura Baltijskoj Sineklizy [The Silurian formations in the Baltic Syneclise]. In Tektonika , fatsii i formatsii zapada Vostochno-Évropejskoj Platformy [The Tectonic , Facies and Formations of the Western East-European Platform] , pp. 103–116. Nauka i Tekhnika , Minsk [in Russian].

Lapinskas , P. 2000. Structure and Petroleum Potential of the Silurian in Lithuania. Institute of Geology , Vilnius , 203 pp.

Lapinskas , P. & Čekavičius , Z. 1981. The task of geological investigations of Silurian rocks with good prospects for oil in the Eastern Borderland of Baltic Depression. In Dostizheniya i zadachi issledovanij po geologii Litovskoj SSR [Achievements and Tasks of the Geological Research in the Lithuanian SSR] (Paltanavičius , J. , ed.) , pp. 105–107. Vilnius [translated from Russian].

Lapinskas , P. & Smilgis , J. 1972. Prospects of revelation of reefogenic buildups in Paleozoic rocks of South East Baltic. In Materialy dokladov vtorogo seminara neftepoiskovykh kriteriev Pribaltiki [Presentations at the Second Seminar on Oil-Prospecting Criteria in the East Baltic] (Korkutis , V. , ed.) , pp. 37–39. Vilnius , Lithuania [translated from Russian].

Laufeld , S. & Bassett , M. G. 1981. Gotland: the anatomy of a Silurian carbonate platform. Episodes , 2 , 23–27.

Nestor , H. & Einasto , R. 1997. Ordovician and Silurian carbonate sedimentation basin. In Geology and Mineral Resources of Estonia (Raukas , A. & Teedumäe , A. , eds) , pp. 192–205. Estonian Academy Publishers , Tallinn.

Paškevičius , J. 1997. The Geology of the Baltic Republics. Vilnius University and Geological Survey of Lithuania , Vilnius , 387 pp.

Riding , R. 1981. Composition , structure and environmental setting of Silurian bioherms and biostromes in northern Europe. In European Fossil Reef Models (Toomey , D. F. , ed.) , Society of Economic Paleontologists and Mineralogists , Special Publication , 30 , 41–83.

Tuuling , I. & Flodén , T. 2013. Silurian reefs off Saaremaa and their extension towards Gotland , central Baltic Sea. Geological Magazine , 150 , 923–936.
http://dx.doi.org/10.1017/S0016756813000101

Watts , N. R. & Riding , R. 2000. Growth of rigid high-relief patch reefs , Mid-Silurian , Gotland , Sweden. Sedimentology , 47 , 979–994.
http://dx.doi.org/10.1046/j.1365-3091.2000.00334.x

 
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Current Issue: Vol. 68, Issue 3, 2019




Publishing schedule:

No. 1: 20 March
No. 2: 20 June
No. 3: 20 September
No. 4: 20 December