geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

New insights into the morphology and sedimentary processes along the western slope of Great Bahama Bank


, : New insights into the morphology and sedimentary processes along the western slope of Great Bahama Bank. Geology 40(7): 603-606

New high-quality multibeam and seismic data image the western slope of the Great Bahama Bank and the adjacent floor of the Straits of Florida. The extensive survey reveals several unexpected large- and small-scale morphologies. These include bypass areas, channel-levee-lobe systems, gullied slopes, and products of slope instabilities at various scales, including long slump scars at the lower slope and mass transport complexes that extend ~3 km into the adjacent basin floor. The toe of the slope is irregularly covered with deep-water carbonate mounds. The abundance of the individual morphological features varies from north to south. From 26°'N to 25°2'N, the slope is dissected by numerous deep canyons that abruptly end southward, where the slope is characterized by a smooth lower portion and small regularly spaced furrows in its upper part. Further south, two long (25–5 km) scars document instability at the lower slope. One of these scars is the source area of a large mass transport complex. In addition to this large-scale feature, several types of gravity-induced sedimentary processes are revealed. Most of the morphologies and inferred processes of this carbonate system are similar to those observed in siliciclastic systems, including mass transport complexes, gravity currents initiated by density cascading, and overspilling channeled turbidity currents. For the first time, a clear asymmetric channel-levee system has been identified along the slope, suggesting similitude in sorting processes between carbonate and siliciclastic systems and enhancing the reservoir-bearing potential of carbonate slopes. Notable differences with siliciclastic systems include: the lack of connection with the shallow and emerged part of the system (i.e., bank top), and the small size of the sedimentary system.

US$19.90

DOI: 10.1130/G32972.1


Other references

Zykova, A.S.; Telushkina, E.L.; Efremova, G.P.; Kuznetsova, G.A.; Kiselev, V.V., 1981: Artificial radionuclides in the atmosphere and some food products in Moscow in 1977 to 1979. Between 1977 and 1979 90Sr and 137Cs tended to decrease in milk, potatoes, cabbage and beet and increased in carrots in the Moscow region. 90Sr was most in root vegetables and 137Cs in root vegetables and milk. 137Cs was more than 90Sr in milk and...

Olah, P., 1960: Hae-matology in pigs vaccinated with lapinized swine fever virus.. The effects of lapinized swine fever vaccine were studied on 260 pigs weighing 36-45 kg. by making daily or 48-hourly white blood cell counts and observing clinical symptoms. In 88 pigs which received the official dose of vaccine without serum, th...

Tauber, Adan A., 2000: New remains of Proterotheriidae Mammalia, Litopterna in the Pleistocene of Cordoba Province, Argentina Hallazgos de Proterotheriidae Mammalia, Litopterna en el Pleistoceno de Cordoba, Argentina. The carpus and metacarpus of a Pleistocene Proterotheriidae tentatively attributed to Neolicaphrium recens Frenguelli from Cordoba Province, central Argentina, are described herein. The manus is tridactyl, with metacarpals II and IV well developed...

Lufkin, E.G.; Wilson, D.M.; Smith, L.H.; Bill, N.J.; DeLuca, H.F.; Dousa, T.P.; Knox, F.G., 1980: Phosphorus excretion in tumoral calcinosis: response to parathyroid hormone and acetazolamide. Tumoral calcinosis is a disorder of mineral metabolism characterized by deposition of cystic and solid calcific masses in and around large joints. It is a rare and progressively disabling condition and is often familial. The cause of hyperphosphat...

Narayan, J.Prakash.; Kumar, N.; Jha, H.N.; Jayachandran, C., 2009: Effect of probenecid on kinetics of enrofloxacin in lactating goats after subcutaneous administration. A comparative pharmacokinetic study of enrofloxacin (5 mg/kg, sc) was conducted in probenecid-pretreated (70 mg/kg, orally 1.5 h prior to enrofloxacin administration) lactating goats to assess the effect of probenecid on the kinetics of enrofloxac...

Vaezi, M.F.; Richter, J.E., 1999: Importance of duodeno-gastro-esophageal reflux in the medical outpatient practice. BACKGROUND/AIMS: The role of acid and duodeno-gastro-esophageal reflux (DGER), also termed bile reflux, in esophageal mucosal injury is controversial. Several recent developments, especially availability of the recent bilirubin monitoring device (...

Johnson, T.R.; Khalil, M.K.; Peppler, R.D.; Davey, D.D.; Kibble, J.D., 2015: Use of the NBME Comprehensive Basic Science Examination as a progress test in the preclerkship curriculum of a new medical school. In the present study, we describe the innovative use of the National Board of Medical Examiners (NBME) Comprehensive Basic Science Examination (CBSE) as a progress test during the preclerkship medical curriculum. The main aim of this study was to...

Mcgibbon, Barbara, Reviewer, 1989: Health effects of low dose ionising radiation (book review). Environmental Pollution 58(2 3 ): 6-7

Nolan, V.G.; Ma, Q.; Cohen, H.T.; Adewoye, A.; Rybicki, A.C.; Baldwin, C.; Mahabir, R.N.; Homan, E.P.; Wyszynski, D.F.; Fabry, M.E.; Nagel, R.L.; Farrer, L.A.; Steinberg, M.H., 2006: Estimated glomerular filtration rate in sickle cell anemia is associated with polymorphisms of bone morphogenetic protein receptor 1B. Renal disease is common in sickle cell anemia. In this exploratory work, we used data from a longitudinal study of the natural history of sickle cell disease to examine the hypothesis that polymorphisms (SNPs) in selected candidate genes are asso...

Wennig R., 1983: Evaluation of a systematic toxicological analysis scheme used in emergency toxicology 4 years experience in a national health laboratory. A systematic analytical approach in emergency toxiciology during the past 4 yr was described. In all cases, a systematic toxicological investigation was performed and the results were listed. In 30% of the cases, the nature of the poison suspected...