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Eustatic sea-level patterns from the Lower Silurian (Llandovery Series) of southern Norway and Estonia

1991; Geological Society of America; Volume: 103; Issue: 3 Linguagem: Inglês

10.1130/0016-7606(1991)103 2.3.co;2

1943-2674

Markes E. Johnson, B. Gudveig Baarli, Heldur Nestor, Madis Rubel, David Worsley,

Hydrocarbon exploration and reservoir analysis

Research Article| March 01, 1991 Eustatic sea-level patterns from the Lower Silurian (Llandovery Series) of southern Norway and Estonia M. E. JOHNSON; M. E. JOHNSON 1Department of Geology, Williams College, Williamstown, Massachusetts 01267 Search for other works by this author on: GSW Google Scholar B. G. BAARLI; B. G. BAARLI 1Department of Geology, Williams College, Williamstown, Massachusetts 01267 Search for other works by this author on: GSW Google Scholar H. NESTOR; H. NESTOR 2Institute of Geology, Estonian Academy of Sciences, Tallinn, Estonia, U.S.S.R. Search for other works by this author on: GSW Google Scholar M. RUBEL; M. RUBEL 2Institute of Geology, Estonian Academy of Sciences, Tallinn, Estonia, U.S.S.R. Search for other works by this author on: GSW Google Scholar D. WORSLEY D. WORSLEY 3Saga Petroleum a.s., P.O. Box 490, 1301 Sandvika, Norway Search for other works by this author on: GSW Google Scholar Author and Article Information M. E. JOHNSON 1Department of Geology, Williams College, Williamstown, Massachusetts 01267 B. G. BAARLI 1Department of Geology, Williams College, Williamstown, Massachusetts 01267 H. NESTOR 2Institute of Geology, Estonian Academy of Sciences, Tallinn, Estonia, U.S.S.R. M. RUBEL 2Institute of Geology, Estonian Academy of Sciences, Tallinn, Estonia, U.S.S.R. D. WORSLEY 3Saga Petroleum a.s., P.O. Box 490, 1301 Sandvika, Norway Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1991) 103 (3): 315–335. https://doi.org/10.1130/0016-7606(1991)103 2.3.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation M. E. JOHNSON, B. G. BAARLI, H. NESTOR, M. RUBEL, D. WORSLEY; Eustatic sea-level patterns from the Lower Silurian (Llandovery Series) of southern Norway and Estonia. GSA Bulletin 1991;; 103 (3): 315–335. doi: https://doi.org/10.1130/0016-7606(1991)103 2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract This study demonstrates the utility of checking for eustatic sea-level events correlated between passive epicontinental seas and those on the margin of orogenic activity. Bathymetric profiles interpreted on the basis of stratigraphic data from the Lower Silurian (Llandovery Series) in five districts of the Oslo region of southern Norway are compared with similar data derived from five bore-hole sites in the Baltic region of Estonia. These regions preserve extensive marine strata deposited on the Silurian continent Baltica. The data are tested for intra-regional and inter-regional conformity. Despite the fact that the Oslo region was affected by the Caledonide Orogeny, the same four highstands in sea level were recorded there as on Estonia's comparatively stable platform.Expressed in terms of the established geochronologic standard and its faunal zones, coeval highstands in sea level occurred across Baltica during latest Rhuddanian time, in mid-Aeronian time (as marked by the basal Monograptus sedgwickii or Stricklandia lens progressa zones), in early Telychian time (M. turriculatus or S. laevis zones), and in late Telychian time near the Llandovery-Wenlock boundary. This timing corresponds to four highstands in sea level previously documented in North America and to at least three high-stands found in South China. Claims for Early Silurian eustasy now rest on data collected from three independent paleocontinents. If the Llandovery Epoch lasted 10 m.y., then sea-level cyclicity was on the order of 2.5 m.y. A combination of tectono-eustastic and glacioeustatic causes probably was responsible for these cycles. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.