Multiple outer-reef tracts along the south Florida bank margin: Outlier reefs, a new windward-margin model

Abstract

Research Article| February 01, 1991 Multiple outer-reef tracts along the south Florida bank margin: Outlier reefs, a new windward-margin model Barbara H. Lidz; Barbara H. Lidz 1U.S. Geological Survey, Center for Coastal Geology, 600 4th Street South, St. Petersburg, Florida 33701 Search for other works by this author on: GSW Google Scholar Albert C. Hine; Albert C. Hine 2Marine Science Department, University of South Florida, 140 7th Avenue South, St. Petersburg, Florida 33701 Search for other works by this author on: GSW Google Scholar Eugene A. Shinn; Eugene A. Shinn 1U.S. Geological Survey, Center for Coastal Geology, 600 4th Street South, St. Petersburg, Florida 33701 Search for other works by this author on: GSW Google Scholar Jack L. Kindinger Jack L. Kindinger 3U.S. Geological Survey, 600 4th Street South, St. Petersburg, Florida 33701 Search for other works by this author on: GSW Google Scholar Author and Article Information Barbara H. Lidz 1U.S. Geological Survey, Center for Coastal Geology, 600 4th Street South, St. Petersburg, Florida 33701 Albert C. Hine 2Marine Science Department, University of South Florida, 140 7th Avenue South, St. Petersburg, Florida 33701 Eugene A. Shinn 1U.S. Geological Survey, Center for Coastal Geology, 600 4th Street South, St. Petersburg, Florida 33701 Jack L. Kindinger 3U.S. Geological Survey, 600 4th Street South, St. Petersburg, Florida 33701 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1991) 19 (2): 115–118. https://doi.org/10.1130/0091-7613(1991)019<0115:MORTAT>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Barbara H. Lidz, Albert C. Hine, Eugene A. Shinn, Jack L. Kindinger; Multiple outer-reef tracts along the south Florida bank margin: Outlier reefs, a new windward-margin model. Geology 1991;; 19 (2): 115–118. doi: https://doi.org/10.1130/0091-7613(1991)019<0115:MORTAT>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 SocietyGeology Search Advanced Search Abstract High-resolution seismic-reflection profiles off the lower Florida Keys reveal a multiple outlier-reef tract system ∼0.5 to 1.5 km sea-ward of the bank margin. The system is characterized by a massive, outer main reef tract of high (28 m) unburied relief that parallels the margin and at least two narrower, discontinuous reef tracts of lower relief between the main tract and the shallow bank-margin reefs. The outer tract is ∼0.5 to 1 km wide and extends a distance of ∼57 km. A single pass divides the outer tract into two main reefs. The outlier reefs developed on antecedent, low-gradient to horizontal offbank surfaces, interpreted to be Pleistocene beaches that formed terracelike features. Radiocarbon dates of a coral core from the outer tract confirm a pre-Holocene age. These multiple outlier reefs represent a new windward-margin model that presents a significant, unique mechanism for progradation of carbonate platforms during periods of sea-level fluctuation. Infilling of the back-reef terrace basins would create new terraced promontories and would extend or "step" the platform seaward for hundreds of metres. Subsequent outlier-reef development would produce laterally accumulating sequences. 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.