[Parameters: Topic='OCEANS', Term='COASTAL PROCESSES', Variable_Level_1='SEDIMENT TRANSPORT']
|
Recent sedimentary facies of isolated carbonate platforms, Belize-Yucatan System, Central America Entry ID: SEPM_JSR_ISO_CARBS |
||||||||||||
|
[
Get Data
]
[
Update this Record
]
|
Summary
|
Abstract:
Distribution of recent sedimentary facies is significantly different in four closely spaced, isolated carbonate platforms off the coasts of Belize and Yucatan (SE Mexico). These differences are largely controlled by variations in submarine topography, which are likely the result of differential subsidence and karstification from platform to platform. A variety of depositional styles and patterns is found in platform interiors that developed during the same Holocene sea-level rise. Composition and texture of surface sediment samples were used to define four major sediment types and to distinguish nine depositional environments within the platforms. Facies maps are based on analysis of 454 sediment samples and high-resolution satellite imagery. Glovers Reef is characterized by a circular facies distribution. The nearly continuous reef margin is composed of a coral--red coralline algae--Halimeda grainstone. Mixed nonskeletal (peloidal)/skeletal wackestones and packstones are present in shallow lagoon parts (< 5 m water depth) behind the margin. The deep interior, from 5 to 18 m water depth, is characterized by mollusk--foram--Halimeda wackestones with over 860 patch reefs of coral--red algae--Halimeda--mollusk packstones. Lighthouse Reef also has a coral grainstone and coral--red algae--Halimeda grainstone rim, but the facies distribution in the interior is strongly asymmetrical. The 8-m-deep eastern lagoon is floored by mollusk--foram--Halimeda wackestones and packstones; the 3-m-deep western lagoon has the mixed peloidal/skeletal wackestone to grainstone facies. A linear trend of coalescing patch reefs and skeletal grainstone facies separates the two lagoons. Banco Chinchorro is similar to Lighthouse Reef, inasmuch as facies distribution patterns of the interior are strongly asymmetrical. Mollusk--foram--Halimeda wackestones--grainstones are present in eastern lagoon areas, whereas shallow (< 5 m) western parts of the lagoon are composed of mixed peloidal/skeletal grainstones, packstones, and wackestones. Most of Turneffe Islands is protected on the east by Lighthouse Reef. Accordingly, Turneffe has a narrower reef and skeletal grainstone rim than the other two platforms. Restricted interior lagoons are up to 8 m deep, and are enclosed by wide mangrove rims and surface sediments dominated by Halimeda-rich wackestone rich in organic matter. Coral patch reefs are absent. In contrast, the unprotected northernmost part of Turneffe has a wide reef and grainstone rim and the open lagoon area consists of mollusk--foram--Halimeda wackestones--packstones with abundant patch reefs. |
Related URL
|
Link:
GET DATA
Description: This is the location from which the two data sets may be viewed/downloaded. File "gischlerc835.xls" contains the Latitude-Longitude coordinates of individual samples. File "gischleratollsedall.xls" contains the composition and texture data of individual samples. |
Geographic Coverage
| N: 19.0 | S: 16.0 | E: -87.0 | W: -88.0 |
| Min Depth: 0 M | Max Depth: 18 M |
Data Set Citation
|
Dataset Originator/Creator:
Gischler, Eberhard and Anthony J. Lomando
Dataset Title: Recent sedimentary facies of isolated carbonate platforms, Belize-Yucatan System, Central America Dataset Series Name: Journal of Sedimentary Research Dataset Release Date: 1999-05-01 Dataset Publisher: SEPM Issue Identification: Volume 69(3) Data Presentation Form: Spreadsheet Online Resource: http://www.sepm.org/archive/index.html |
Paleo_Temporal_Coverage
|
Chrono Unit:
|
Location Keywords
|
CONTINENT
> NORTH AMERICA
> CENTRAL AMERICA
> BELIZE
|
Data Resolution
|
Latitude Resolution:
1 second
Longitude Resolution: 1 second Vertical Resolution: 1 m |
Science Keywords
| OCEANS >COASTAL PROCESSES >BEACHES [Definition] |
| OCEANS >COASTAL PROCESSES >CORAL REEFS [Definition] |
| OCEANS >COASTAL PROCESSES >LAGOONS [Definition] |
| OCEANS >COASTAL PROCESSES >SEA LEVEL RISE [Definition] |
| OCEANS >COASTAL PROCESSES >SEDIMENT TRANSPORT [Definition] |
| OCEANS >COASTAL PROCESSES >SEDIMENTATION [Definition] |
| OCEANS >MARINE SEDIMENTS >BIOGENIC SEDIMENTS >CARBONATE SEDIMENTS [Definition] |
| OCEANS >MARINE SEDIMENTS >SEDIMENT COMPOSITION [Definition] |
| OCEANS >MARINE SEDIMENTS >SEDIMENTARY TEXTURES >SEDIMENT GRAIN SIZE [Definition] |
| OCEANS >MARINE SEDIMENTS >SEDIMENT TRANSPORT [Definition] |
| OCEANS >MARINE SEDIMENTS >STRATIGRAPHIC SEQUENCE [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >CORAL DEPOSITS [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >MACROFOSSILS [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >SEDIMENTS [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >STRATIGRAPHIC SEQUENCE [Definition] |
| SOLID EARTH >ROCKS/MINERALS/CRYSTALS >SEDIMENTARY ROCKS [Definition] |
| SOLID EARTH >ROCKS/MINERALS/CRYSTALS >SEDIMENTS [Definition] |
| SOLID EARTH >TECTONICS >PLATE TECTONICS >STRATIGRAPHIC SEQUENCE [Definition] |
| BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES [Definition] |
| BIOSPHERE >AQUATIC ECOSYSTEMS >MARINE HABITAT [Definition] |
ISO Topic Category
|
BIOTA
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE |
Access Constraints
| None |
Use Constraints
|
Please use the following to cite the data: Gischler, Eberhard and Anthony J. Lomando, Recent sedimentary facies of isolated carbonate platforms, Belize-Yucatan System, Central America, JSR Volume 69(3), May 1999. |
Keywords
| CARBONATE PLATFORM |
| COARSE FRACTION |
| CORAL |
| DEPOSITIONAL ENVIRONMENTS |
| FACIES |
| FACIES DETERMINATION |
| FORAMS |
| GEOLOGY |
| GRAIN SIZE |
| MATRIX |
| MOLLUSCKS |
| REEFS |
| SEDIMENTOLOGY |
| STRATIGRAPHY |
| YUCATAN |
Data Set Progress
| COMPLETE |
Originating Center
| SEPM |
Data Center
|
Society for Sedimentary Geology
[Information]
Data Center URL: http://www.sepm.org/archive/index.html Dataset ID: gischleratollsedall.xls Dataset ID: gischlerc835.xls
| |||
Distribution
|
Distribution_Media:
Online HTTP
Distribution_Format: xls Fees: None |
Personnel
|
EBERHARD
GISCHLER Role: INVESTIGATOR Phone: 49-69-798 25136 Fax: 49-69-798 22958 Email: gischler at em.uni-frakfurt.de Contact Address: Geologisch-Paldontologisches Institut Universitdt Frankfurt am Main Senckenberganlage 32--34 City: Frankfurt am Main Postal Code: 60054 Country: Germany |
|
GENE
R.
MAJOR Role: DIF AUTHOR Email: gsfc-gcmduso at mail.nasa.gov |
|
ANTHONY
J.
LOMANDO Role: INVESTIGATOR Contact Address: Chevron Overseas Petroleum Inc. 6001 Bollinger Canyon Road City: San Ramon Province or State: California Postal Code: 94583 Country: USA |
Publications/References
Recent sedimentary facies of isolated carbonate platforms,
Belize-Yucatan system, Central America, by E. Gischler and
A.J. Lomando, published in Journal of Sedimentary Research, vol. 69
(3): pp. 947-963, 1999.
Belize-Yucatan system, Central America, by E. Gischler and
A.J. Lomando, published in Journal of Sedimentary Research, vol. 69
(3): pp. 947-963, 1999.
Creation and Review Dates
DIF Creation Date:
2000-05-26
Last DIF Revision Date:
2006-10-13
| [ Update this Record ] |
