Shelf-valley compound fill produced by fault subsidence and eustatic sea-level changes, Eocene La Meseta Formation, Seymour Island, Antarctica

Abstract

Research Article| February 01, 2000 Shelf-valley compound fill produced by fault subsidence and eustatic sea-level changes, Eocene La Meseta Formation, Seymour Island, Antarctica Szczepan J. Porebski Szczepan J. Porebski 1Instytut Nauk Geologicznych PAN, Ośrodek Badawczy w Krakowie Senacka 1, 31-002 Kraków, Poland Search for other works by this author on: GSW Google Scholar Geology (2000) 28 (2): 147–150. https://doi.org/10.1130/0091-7613(2000)28<147:SCFPBF>2.0.CO;2 Article history received: 19 Jul 1999 rev-recd: 13 Oct 1999 accepted: 21 Oct 1999 first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Szczepan J. Porebski; Shelf-valley compound fill produced by fault subsidence and eustatic sea-level changes, Eocene La Meseta Formation, Seymour Island, Antarctica. Geology 2000;; 28 (2): 147–150. doi: https://doi.org/10.1130/0091-7613(2000)28<147:SCFPBF>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentBy SocietyGeology Search Advanced Search Abstract Incised-valley compound fills are currently modeled in terms of multiple cycles of relative sea-level fall and rise. In contrast, the Eocene La Meseta Formation from Seymour Island is a shelf-valley geometrically compound fill, the development of which was governed mainly by local subsidence along fault-controlled valley margins and associated amplified tidal circulation. The valley contains a ≥ 330-m-thick, festoonlike stack of transgressive-regressive, marine-estuarine cycles affected by slumping and sliding, growth faulting, and warping near the margins. Aggradational stacking of the transgressive-regressive cycles reflects transgressions initiated or enhanced by episodic subsidence of the valley floor, whereas sequence boundaries record those base-level falls having rates that exceeded the rate of valley-floor subsidence. Compound fills, particularly those of shelf-valley systems developed along active basement structures, should not necessarily be attributable to regional base-level changes alone. You do not currently have access to this article.