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Late Neogene chronology and sequence stratigraphy of mixed carbonate-siliciclastic deposits of the Cibao Basin, Dominican Republic

2011; Geological Society of America; Volume: 124; Issue: 1-2 Linguagem: Inglês

10.1130/b30391.1

1943-2674

Donald F. McNeill, James S. Klaus, Ann F. Budd, Brendan Lutz, Scott E. Ishman,

Geological formations and processes

Research Article| January 01, 2012 Late Neogene chronology and sequence stratigraphy of mixed carbonate-siliciclastic deposits of the Cibao Basin, Dominican Republic Donald F. McNeill; Donald F. McNeill † 1Division of Marine Geology and Geophysics, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, Florida 33149, USA †E-mail: dmcneill@rsmas.miami.edu Search for other works by this author on: GSW Google Scholar James S. Klaus; James S. Klaus 2Department of Geological Sciences, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146, USA Search for other works by this author on: GSW Google Scholar Ann F. Budd; Ann F. Budd 3Department of Geoscience, University of Iowa, Trowbridge Hall, Iowa City, Iowa 52242, USA Search for other works by this author on: GSW Google Scholar Brendan P. Lutz; Brendan P. Lutz 4Department of Geology, Southern Illinois University, 1259 Lincoln Drive, Carbondale, Illinois 62901, USA Search for other works by this author on: GSW Google Scholar Scott E. Ishman Scott E. Ishman 4Department of Geology, Southern Illinois University, 1259 Lincoln Drive, Carbondale, Illinois 62901, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Donald F. McNeill † 1Division of Marine Geology and Geophysics, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, Florida 33149, USA James S. Klaus 2Department of Geological Sciences, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146, USA Ann F. Budd 3Department of Geoscience, University of Iowa, Trowbridge Hall, Iowa City, Iowa 52242, USA Brendan P. Lutz 4Department of Geology, Southern Illinois University, 1259 Lincoln Drive, Carbondale, Illinois 62901, USA Scott E. Ishman 4Department of Geology, Southern Illinois University, 1259 Lincoln Drive, Carbondale, Illinois 62901, USA †E-mail: dmcneill@rsmas.miami.edu Publisher: Geological Society of America Received: 12 Aug 2010 Revision Received: 17 Dec 2010 Accepted: 21 Dec 2010 First Online: 08 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 © 2012 Geological Society of America GSA Bulletin (2012) 124 (1-2): 35–58. https://doi.org/10.1130/B30391.1 Article history Received: 12 Aug 2010 Revision Received: 17 Dec 2010 Accepted: 21 Dec 2010 First Online: 08 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Donald F. McNeill, James S. Klaus, Ann F. Budd, Brendan P. Lutz, Scott E. Ishman; Late Neogene chronology and sequence stratigraphy of mixed carbonate-siliciclastic deposits of the Cibao Basin, Dominican Republic. GSA Bulletin 2012;; 124 (1-2): 35–58. doi: https://doi.org/10.1130/B30391.1 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 A stratigraphic study of late Miocene–Pliocene mixed carbonate and siliciclastic sediment (upper part of the Yaque Group) was conducted in northern Hispaniola to refine the chronostratigraphy of uplifted, nearshore marine sequences in the Cibao Basin. Classic late Neogene sections in these sequences include a spectacularly preserved faunal record for the northern Caribbean. Refined ages of the Cercado Formation (6.6–6.0 Ma), the Gurabo Formation (ca. 5.8–4.0 Ma), and the Mao Formation (3.9–3.5 Ma) allow correlation to regional and global sea-level events. Each of the three formations corresponds to one depositional sequence, composed of mixtures, at different proportions, of skeletal debris, mostly coral, and mud-size (silt) siliciclastic sediment. Distinct stratal geometries and lithofacies individualize the three formations, each separated by pebble conglomerates. The Cercado Formation depositional sequence consists of prograding inner-shelf siliciclastic sands and patch reefs. The basal transgressive unit of the Gurabo Formation is made of seaward-prograding low-angle clinothems of bedded and burrowed siliciclastic sand with molluscs and free-living corals. The upper Gurabo unit consists of massive middle-shelf clinothems of silt with bedded reef debris and in situ branching coral thickets. These clinothems grade basinward into massive, deeper-water silt deposits at the shelf edge and basin slopes. The Mao Formation sequence records the transition from lowstand fluvial-deltaic facies to transgressive and highstand marine clinothems made mostly of coral debris in a silt matrix. In the Mao Formation outcrops, the coral-silt clinothems can be divided into at least 10 high-frequency cycles (40 k.y.?) based on lithofacies. Channelized and slumped coarse siliciclastic sand, gravel, and nonmarine alluvium cap the sequence, likely associated with lowered sea level starting at ca. 3.3 Ma and perhaps the onset of regional uplift. The major lithologic and sequence geometry changes in the Cibao Basin correlate with trends in the oxygen isotope ice-volume proxy and likely reflect deposition responding to major periods of marine transgression and highstand. An especially prominent feature is the major deepening and margin back step near the Miocene–Pliocene boundary, continuing in the early Pliocene, which resulted in the deposition of the Gurabo Formation. Transgression and sea-level highstand in the late–early Pliocene (3.9–3.5 Ma) produced distinctive margin progradation primarily by coral debris. This progradation event was synchronous with progradation in the nearby western Great Bahama Bank. The different stratal configurations of the three sequences can be attributed to a combination of factors, including: (1) shelf morphology and location on the shelf, (2) paleoceanographic conditions such as warm sea-surface temperatures and reduced upwelling, which controlled coral productivity and reef geometry, and (3) the influx of siliciclastic mud from the adjacent mountains. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.