Seismic correlation of the Cambrian sequence between Gotland and Hiiumaa in the Baltic Sea

Tuuling, Igor; Flodén, Tom; Sjöberg, Johanna

doi:10.1080/11035899709546453

Cited by 14 publications

(14 citation statements)

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“…13). These divergences coincide obviously with tectonic deformations, the number and magnitude of which increases towards the northern Gotland (Flodén, 1975(Flodén, , 1980Tuuling et al, 1995Tuuling et al, , 1997Tuuling and Flodén, 2001, figs. 3, 4).…”

Section: Structural Lowering Of the Bk Towards The Central Baltic Seamentioning

confidence: 84%

“…A strong and stable reflector at the lower boundary of the Lükati Formation close to Hiiuma (Cmlk 1 ), disappears westwards near the seismic line 9504. Thus, most of the Cambrian units distinguished in the lower and in the upper parts, respectively, around Hiiumaa and Gotska Sandön, wedge out beneath the sea (Tuuling et al, 1997). The only supposedly trans-Baltic Cambrian reflector (Cm 3 ) suggest that the När Sandstone, När Shale and Viklau Sandstone members around Gotska Sandön correlate with the Irbeni and Soela formations offshore Hiiumaa.…”

Section: The Cambrian and Ordovician Seismostratigraphic Framework Bementioning

confidence: 93%

“…However, both studies were mainly focused on the correlation of the Palaeozoic rocks between Estonia and Sweden where the BK was treated only episodically as a key marker in interpreting the Klint-embedding Cambrian-Ordovician layers (Flodén, 1980;Flodén et al, 1994;Tuuling et al, 1995Tuuling et al, , 1997Tuuling, 1998;Flodén, 2000a, 2007). Still, the submarine BK was broadly treated in discussing the bedrock structure and the cuesta relief beneath the central Baltic Sea .…”

Section: Introductionmentioning

confidence: 98%

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The Baltic Klint beneath the central Baltic Sea and its comparison with the North Estonian Klint

Tuuling

Flodén

2016

Geomorphology

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Section: Structural Lowering Of the Bk Towards The Central Baltic Seamentioning

confidence: 84%

Section: The Cambrian and Ordovician Seismostratigraphic Framework Bementioning

confidence: 93%

Section: Introductionmentioning

confidence: 98%

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The Baltic Klint beneath the central Baltic Sea and its comparison with the North Estonian Klint

Tuuling

Flodén

2016

Geomorphology

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“…The sec tions of the Landsort-F¯rö faults that are bur ied be neath the Cambro-Ordo vi cian rocks re veal no di rect signs of Early Pa leo zoic ac tiv ity (Flodén, 1980). How ever, sig nif i cant thick ness vari a tions of the Cam brian se quence around north ern Gotland and Gotska Sandön (Thorslund, 1958;Tuuling et al, 1997;Niel sen and Shovsbo, 2011), ob vi ously re lated to base ment-block movements, hints that this re gion was also tec toni cally ac tive in Cambrian times. The in creased num ber of LZD with struc tur ally higher west ern sides just NE of Gotland (Figs.…”

Section: Tectonic Setting Versus Bedrock Structure Along the Swedish mentioning

confidence: 99%

“…Ex ten sive seis mic pro fil ing since the early 1960s has resulted in a huge amount of data about the dis tri bu tion, thick -nesses, and thus struc ture of dif fer ent Pa leo zoic lay ers beneath the cen tral Bal tic Sea (Flodén, 1975(Flodén, , 1980Flodén et al, 1994Flodén et al, , 2001Tuuling et al, 1995Tuuling et al, , 1997Tuuling and Flodén 2000a, 2009a, b, 2011. Fus ing this in forma tion with the sur round ing main land knowl edge, this pa per aims to gen er al ise the struc ture of the plat form sed i men tary cover on the south ern slope of the Bal tic Shield, and to analyse its changes/trends from Es to nia to the Swed ish east coast.…”

Section: Introductionmentioning

confidence: 99%

Paleozoic rocks structure versus Cenozoic cuesta relief along the Baltic Shield–East European Platform transect

Tuuling

2017

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1 Uni ver sity of Tartu, In sti tute of Ecol ogy and Earth Sci ences, Ravila 14A, 50411 Tartu, Es to nia Tuuling, I., 2017. Pa leo zoic rocks struc ture ver sus Ce no zoic cuesta re lief along the Bal tic Shield-East Eu ro pean Plat form transect. Geo log i cal Quar terly, 61 (2): 396-412, doi: 10.7306/gq.1342Based on struc tural maps, the bed rock struc ture on the south ern slope of the Bal tic Shield is ana lysed. Gently south erly dipping (0.1-0.2°) Paleozoic lay ers from Es to nia to the Swed ish east coast form the Bal tic Homocline (BH). Nu mer ous monoclinal folds, forced by base ment fault ing, in duce slight vari a tions in bed rock at ti tude across the BH. Stud ies on faults ex posed in South ern Fin land sug gest that many monoclinal folds in duc ing base ment faults within the BH are of Pre cam brian or i gin and have been ac tive in pulses. The pres ent mono clines were shaped by the Cal edo nian Orog eny. Submeridional tectonic hinge-lines in duce mi nor re gional-scale changes in the struc tural set ting and con trol trends/styles of the forced folds. From the west, the BH bounds with the Bal tic-Bothnian mo bile zone that has been in ter mit tently ac tive since Mesoproterozoic times. The evolv ing Bal tic Syneclise in the Si lu rian re ar ranged the struc tural set ting typ i cal for the Or do vician Bal tic Ba sin. The Ce no zoic up lift of Scan di na via cre ated a SE-to-E-dip ping bed rock se quence around the Gotland-Öland area. As the lat ter area had a dif fer ent at ti tude than the BH, two Ce no zoic cuesta-sets started to evolve around the north ern Bal tic Proper. They both had an out let to the N-S-flow ing Eridanos River around the Gotska Sandön area, cre at ing thus two in de pend ent sec tions of the Bal tic Klint.

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Geophysical well log-motifs, lithology, stratigraphical aspects and correlation of the Ordovician succession in the Swedish part of the Baltic Basin

Erlström

Sopher

2019

Int J Earth Sci (Geol Rundsch)

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The geophysical characteristics of the carbonate-dominated Ordovician succession is described using wire-line logging data from exploration wells located within the Swedish part of the Baltic Basin, both offshore and from the island of Gotland. The petrophysical properties and log-motifs are compared and correlated with the lithology of cores from the Hamra-10, Skåls-1 and Grötlingbo-1 wells on southern Gotland. The 80-125-m-thick Ordovician succession is divided into five log stratigraphic units O a-O e , which are correlated throughout the study area. The proposed log stratigraphy and wire-line log characteristics are evaluated and compared with the established Ordovician stratigraphy from the adjacent areas of Öland, Östergötland and South Estonia. The newly established log stratigraphy is also linked to the existing seismic stratigraphic framework for the study area and exemplified with a selection of interpreted seismic type sections from Gotland and the south Baltic Sea. The presented characterization, division and correlation provide a basis for understanding the lateral and vertical variation of the petrophysical properties, which are essential in assessing the sealing capacity of the Ordovician succession, in conjunction with storage of CO 2 in the underlying Cambrian sandstone reservoir.

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Seismic correlation of the Cambrian sequence between Gotland and Hiiumaa in the Baltic Sea

Cited by 14 publications

References 6 publications

The Baltic Klint beneath the central Baltic Sea and its comparison with the North Estonian Klint

The Baltic Klint beneath the central Baltic Sea and its comparison with the North Estonian Klint

Paleozoic rocks structure versus Cenozoic cuesta relief along the Baltic Shield–East European Platform transect

Geophysical well log-motifs, lithology, stratigraphical aspects and correlation of the Ordovician succession in the Swedish part of the Baltic Basin

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