Introduction to Major Environments and Their Deposits, Great Bahama Bank
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A Modified Sverdrup Model of the Atlantic and Caribbean Circulation
MARCH 2002 WAJSOWICZ 973 A Modi®ed Sverdrup Model of the Atlantic and Caribbean Circulation ROXANA C. WAJSOWICZ* Department of Meteorology, University of Maryland at College Park, College Park, Maryland (Manuscript received 9 October 2000, in ®nal form 6 August 2001) ABSTRACT An analytical model of the mean wind-driven circulation of the North Atlantic and Caribbean Sea is constructed based on linear dynamics and assumed existence of a level of no motion above all topography. The circulation around each island is calculated using the island rule, which is extended to describe an arbitrary length chain of overlapping islands. Frictional effects in the intervening straits are included by assuming a linear dependence on strait transport. Asymptotic expansions in the limit of strong and weak friction show that the transport streamfunction on an island boundary is dependent on wind stress over latitudes spanning the whole length of the island chain and spanning just immediately adjacent islands, respectively. The powerfulness of the method in enabling the wind stress bands, which determine a particular strait transport, to be readily identi®ed, is demonstrated by a brief explanation of transport similarities and differences in earlier numerical models forced by various climatological wind stress products. In the absence of frictional effects outside western boundary layers, some weaker strait transports are in the wrong direction (e.g., Santaren Channel) and others are too large (e.g., Old Bahama Channel). Also, there is no western boundary current to the east of Abaco Island. Including frictional effects in the straits enables many of these discrepancies to be resolved. -
Bulletin of the Geological Society of America Vol. 71. Pp. 1729-1754, 7 Figs. December 1960 Bermuda: a Partially Drowned, Late M
BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA VOL. 71. PP. 1729-1754, 7 FIGS. DECEMBER 1960 BERMUDA: A PARTIALLY DROWNED, LATE MATURE, PLEISTOCENE KARST BY J HARLEN BRETZ ABSTRACT During Pleistocene time, the Bermuda Islands repeatedly underwent partial inundation and re-emergence. The land areas were continuously attacked and reduced by rain and ground water but repeatedly renewed, during times of submergence, by deposition of marine limestone and by contemporaneous additions of shore-born and wind-transported carbonate sand, now eolianite. Soils formed under subaerial conditions are now buried be- neath later deposits and constitute important stratigraphic markers. The igneous founda- tion rock appears to have been exposed during some low marine stands, and the former shore lines seem to be recorded by submerged terraces. The major karst features are largely below sea level, and they must date from times of continental glaciations. Previous writers have assigned eolian accumulation to times of Pleistocene low sea level and soil-making to times of interglacial high sea. Both conclusions are held to be er- roneous. CONTENTS TEXT Figure Page Page Navy and Air Force modifications of the Introduction 1729 shore line 1730 Acknowledgments 1732 2. Bermuda Islands with the adjacent Dunes and eolianites 1732 banks 1733 Paleosols 1736 3. Diagram of section at Whalebone Bay, Ber- Caves 1741 muda Islands 1735 Origin of the interior basins 1744 4. Diagram to show contrast in soil record on Correlation of soil-making and dune-building uplands and lowlands, Bermuda with Pleistocene eustatism 1746 Islands 1736 Conclusion 1752 5. Diagram of Shore Hills type section, References cited 1754 Bermuda Islands 1737 6. -
Depositional Setting of Algoma-Type Banded Iron Formation Blandine Gourcerol, P Thurston, D Kontak, O Côté-Mantha, J Biczok
Depositional Setting of Algoma-type Banded Iron Formation Blandine Gourcerol, P Thurston, D Kontak, O Côté-Mantha, J Biczok To cite this version: Blandine Gourcerol, P Thurston, D Kontak, O Côté-Mantha, J Biczok. Depositional Setting of Algoma-type Banded Iron Formation. Precambrian Research, Elsevier, 2016. hal-02283951 HAL Id: hal-02283951 https://hal-brgm.archives-ouvertes.fr/hal-02283951 Submitted on 11 Sep 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Accepted Manuscript Depositional Setting of Algoma-type Banded Iron Formation B. Gourcerol, P.C. Thurston, D.J. Kontak, O. Côté-Mantha, J. Biczok PII: S0301-9268(16)30108-5 DOI: http://dx.doi.org/10.1016/j.precamres.2016.04.019 Reference: PRECAM 4501 To appear in: Precambrian Research Received Date: 26 September 2015 Revised Date: 21 January 2016 Accepted Date: 30 April 2016 Please cite this article as: B. Gourcerol, P.C. Thurston, D.J. Kontak, O. Côté-Mantha, J. Biczok, Depositional Setting of Algoma-type Banded Iron Formation, Precambrian Research (2016), doi: http://dx.doi.org/10.1016/j.precamres. 2016.04.019 This is a PDF file of an unedited manuscript that has been accepted for publication. -
Stratigraphy, Lithology, and Depositional Environment of the Black Prince Formation Southeastern Arizona and Southwestern New Mexico
Western Washington University Western CEDAR WWU Graduate School Collection WWU Graduate and Undergraduate Scholarship Summer 1980 Stratigraphy, Lithology, and Depositional Environment of the Black Prince Formation Southeastern Arizona and Southwestern New Mexico Patrick Kevin Spencer Western Washington University, [email protected] Follow this and additional works at: https://cedar.wwu.edu/wwuet Part of the Geology Commons Recommended Citation Spencer, Patrick Kevin, "Stratigraphy, Lithology, and Depositional Environment of the Black Prince Formation Southeastern Arizona and Southwestern New Mexico" (1980). WWU Graduate School Collection. 644. https://cedar.wwu.edu/wwuet/644 This Masters Thesis is brought to you for free and open access by the WWU Graduate and Undergraduate Scholarship at Western CEDAR. It has been accepted for inclusion in WWU Graduate School Collection by an authorized administrator of Western CEDAR. For more information, please contact [email protected]. VJWU LIBRARY MASTER'S THESIS In presenting this thesis in partial fulfillment of the requirements for a master's degree at Western Washington University, I agree that the Library shall make its copies freely available for inspection. I further agree that extensive copying of this thesis is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this thesis for commercial purposes, or for financial gain, shall not be allowed without my written permission. Signature Date 2., (^BO_________ MASTER’S THESIS In presenting this thesis in partial fulfillment of the requirements for a master’s degree at Western Washington University, I grant to Western Washington University the non-exclusive royalty-free right to archive, reproduce, distribute, and display the thesis in any and all forms, including electronic format, via any digital library mechanisms maintained by WWU. -
The Depositional Environment and Petrology of the White Rim
UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY The Depositional Environment and Petrology of the White Rim Sandstone Member of the Permian Cutler Formation, Canyonlands National Park, Utah by Brenda A. Steele-Mallory Open-File Report 82-204 1982 This report is preliminary and has not been been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. CONTENTS Page Abstract ............................................................ 1 Introducti on..........................................................2 Methods of Study......................................................4 Geologic Setting......................................................6 Stratigrapic Relationships............................................9 Economic Geology.....................................................11 Field Observations................................................... 12 Sedimentary Structures..........................................12 Dune Genetic Unit..........................................12 Interdune Genetic Unit.....................................13 Miscellaneous Sedimentary Structures.......................20 Petrology....................................................... 23 Texture.................................................... 23 Mineralogy.................................................25 Bi ologi c Consti tuents...................................... 26 Chemical Constituents......................................26 Diagenetic Features........................................26 -
Locational Factors Determining the Distribution of Nesting Sites for A
Edith Cowan University Research Online Theses : Honours Theses 1998 Locational factors determining the distribution of nesting sites for a colony of wedge-tailed shearwaters, puffinus pacificus, onest W Wallabi Island, Houtman Abrolhos, Western Australia Julie Davis Edith Cowan University Follow this and additional works at: https://ro.ecu.edu.au/theses_hons Part of the Ecology and Evolutionary Biology Commons, and the Ornithology Commons Recommended Citation Davis, J. (1998). Locational factors determining the distribution of nesting sites for a colony of wedge- tailed shearwaters, puffinus pacificus, onest W Wallabi Island, Houtman Abrolhos, Western Australia. https://ro.ecu.edu.au/theses_hons/473 This Thesis is posted at Research Online. https://ro.ecu.edu.au/theses_hons/473 Edith Cowan University Copyright Warning You may print or download ONE copy of this document for the purpose of your own research or study. The University does not authorize you to copy, communicate or otherwise make available electronically to any other person any copyright material contained on this site. You are reminded of the following: Copyright owners are entitled to take legal action against persons who infringe their copyright. A reproduction of material that is protected by copyright may be a copyright infringement. Where the reproduction of such material is done without attribution of authorship, with false attribution of authorship or the authorship is treated in a derogatory manner, this may be a breach of the author’s moral rights contained in Part IX of the Copyright Act 1968 (Cth). Courts have the power to impose a wide range of civil and criminal sanctions for infringement of copyright, infringement of moral rights and other offences under the Copyright Act 1968 (Cth). -
Keys Sanctuary 25 Years of Marine Preservation National Parks Turn 100 Offbeat Keys Names Florida Keys Sunsets
Keys TravelerThe Magazine Keys Sanctuary 25 Years of Marine Preservation National Parks Turn 100 Offbeat Keys Names Florida Keys Sunsets fla-keys.com Decompresssing at Bahia Honda State Park near Big Pine Key in the Lower Florida Keys. ANDY NEWMAN MARIA NEWMAN Keys Traveler 12 The Magazine Editor Andy Newman Managing Editor 8 4 Carol Shaughnessy ROB O’NEAL ROB Copy Editor Buck Banks Writers Julie Botteri We do! Briana Ciraulo Chloe Lykes TIM GROLLIMUND “Keys Traveler” is published by the Monroe County Tourist Development Contents Council, the official visitor marketing agency for the Florida Keys & Key West. 4 Sanctuary Protects Keys Marine Resources Director 8 Outdoor Art Enriches the Florida Keys Harold Wheeler 9 Epic Keys: Kiteboarding and Wakeboarding Director of Sales Stacey Mitchell 10 That Florida Keys Sunset! Florida Keys & Key West 12 Keys National Parks Join Centennial Celebration Visitor Information www.fla-keys.com 14 Florida Bay is a Must-Do Angling Experience www.fla-keys.co.uk 16 Race Over Water During Key Largo Bridge Run www.fla-keys.de www.fla-keys.it 17 What’s in a Name? In Marathon, Plenty! www.fla-keys.ie 18 Visit Indian and Lignumvitae Keys Splash or Relax at Keys Beaches www.fla-keys.fr New Arts District Enlivens Key West ach of the Florida Keys’ regions, from Key Largo Bahia Honda State Park, located in the Lower Keys www.fla-keys.nl www.fla-keys.be Stroll Back in Time at Crane Point to Key West, features sandy beaches for relaxing, between MMs 36 and 37. The beaches of Bahia Honda Toll-Free in the U.S. -
The Sedimentology of Cay Sal Bank - an Incipiently Drowned Carbonate Platform
Nova Southeastern University NSUWorks HCNSO Student Theses and Dissertations HCNSO Student Work 4-30-2019 The edimeS ntology of Cay Sal Bank - an Incipiently Drowned Carbonate Platform Luis Ramirez [email protected] Follow this and additional works at: https://nsuworks.nova.edu/occ_stuetd Part of the Geology Commons, Marine Biology Commons, and the Oceanography and Atmospheric Sciences and Meteorology Commons Share Feedback About This Item NSUWorks Citation Luis Ramirez. 2019. The Sedimentology of Cay Sal Bank - an Incipiently Drowned Carbonate Platform. Master's thesis. Nova Southeastern University. Retrieved from NSUWorks, . (503) https://nsuworks.nova.edu/occ_stuetd/503. This Thesis is brought to you by the HCNSO Student Work at NSUWorks. It has been accepted for inclusion in HCNSO Student Theses and Dissertations by an authorized administrator of NSUWorks. For more information, please contact [email protected]. Thesis of Luis Ramirez Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science M.S. Marine Environmental Sciences Nova Southeastern University Halmos College of Natural Sciences and Oceanography April 2019 Approved: Thesis Committee Major Professor: Sam Purkis, Ph.D Committee Member: Bernhard Riegl, Ph.D Committee Member: Robert Madden, Ph.D This thesis is available at NSUWorks: https://nsuworks.nova.edu/occ_stuetd/503 HALMOS COLLEGE OF NATURAL SCIENCES AND OCEANOGRAPHY The Sedimentology of Cay Sal Bank, an Incipiently Drowned Carbonate Platform By Luis F. Ramirez Submitted to the Faculty of Halmos College of Natural Sciences and Oceanography in partial fulfillment of the requirements for the degree of Master of Science with a specialty in: Marine Environmental Science Nova Southeastern University May 2019 Submitted in Partial Fulfillment of the Requirements for the Degree of Masters of Science: Marine Environmental Science Luis F. -
Mass Transport and Internal Flow Patterns at Windward Passage
Mass Transport and Internal Flow Patterns at Windward Passage Ryan Smith 23 April 2008 Introduction and Motivation Methodology The Gulf Stream system is fed via Atlantic inflow The study’s moored array consisted of five current through the passages of the Bahamas and the meter moorings, two inverted echo sounders (IES), and Caribbean. Its role both as a return pathway for the two shallow pressure gauges, deployed between Cuba Sverdrup flow from the North Atlantic subtropical gyre and Haiti along the sill of Windward Passage. The and as the upper western boundary component of the array was operational for 16 months, between October Meridional Overturning Cell (MOC) is well- 2003 and February 2005. documented (Schmitz and Richardson, 1991; and others). Over this same period, four oceanographic research cruises were conducted in the region. Repeat Historically, a disparity has existed between the amount hydrographic stations were occupied during each of research focused on the downstream components of survey, and full water column measurements of this system (Florida Current, Gulf Stream, Gulf Stream conductivity, temperature, depth, dissolved oxygen, and extension) and the upstream study of Atlantic inflow velocity were collected using an instrumentation into the Caribbean Sea through the Caribbean passages. package equipped with a Sea-Bird 9plus CTD+O2 and Windward Passage, one of the largest of these passages, 24 bottle rosette water sampler, a lowered downward- separates the islands of Cuba and Hispaniola in the looking 150 kHz RD Instruments (RDI) broadband northern Caribbean Sea. Despite being recognized as acoustic Doppler current profiler (LADCP), and an an important inflow channel to the Caribbean for over upward-looking 300 kHz RDI Workhorse LADCP 70 years (Seiwell, 1938; Wüst, 1963; Worthington, (cruises 2-4 only). -
Alluvial Fans
GY 111 Lecture Notes D. Haywick (2008-09) 1 GY 111 Lecture Note Series Sedimentary Environments 1: Alluvial Fans Lecture Goals A) Depositional/Sedimentary Environments B) Alluvial fan depositional environments C) Sediment and rocks that form on alluvial fans Reference: Press et al., 2004, Chapter 7; Grotzinger et al., 2007, Chapter 18, p 449 GY 111 Lab manual Chapter 3 Note: At this point in the course, my version of GY 111 starts to diverge a bit from my colleagues. I tend to focus a bit more on sedimentary processes then they do mostly because we live in an area that is dominated by sedimentation and I figure that you should be as familiar as possible with the subject. As it turns out, the web notes are also more comprehensive than what you'll find in your text book A) Depositional/sedimentary environments Last time we met, we discussed how sediment moved from one place to another. Remember that sediment is produced in a lot of different locations, but it seldom stays where it is produced. The action of water, wind and ice transport it from the sediment source to the sediment sink. The variety of sediment sinks that exist on the planet is truly amazing. There are river basins, lakes, deserts, lagoons, swamps, deltas, beaches, barrier islands, reefs, continental shelves, the abyssal plains (very deep!), trenches (even deeper!) etc. As we discussed last time, these places are called depositional environments (also known as sedimentary environments). Each depositional environment may also have several subdivisions. For example, there are open beaches, sheltered beaches, shingle beaches, sand beaches, strandline beaches, even mud beaches. -
Outlook of 2021 Sargassum Blooms in the Caribbean Sea and Gulf Of
Outlook of 2021 Sargassum blooms in the Caribbean Sea and Gulf of Mexico* May 31st, 2021, by University of South Florida Optical Oceanography Lab ([email protected]) The maps below show Sargassum abundance, with warm colors representing high abundance. In May 2021, the Sargassum amount continued to increase across the central west Atlantic (CWA) and the Caribbean Sea (CS), which also sets a new historical record for the month of May. Large amount of Sargassum was observed in CWA, i.e., the region east of the Lesser Antilles in the maps below, and in the entire CS. Moderate amount has been transported from the CS to the Gulf of Mexico (GoM), the Straits of Florida, and along the east coast of Florida following the Loop Current, Florida Current, and the Gulf Stream, respectively. Correspondingly, small amount of Sargassum was observed in the Straits of Florida and along the east coast of Florida with possible beaching events. On the other hand, significant beaching events may have occurred around most of the Caribbean nations and islands. Looking ahead, 2021 will be another major Sargassum year, and the Sargassum amount in the CS will likely increase continuously into the summer, accompanied with more beaching events. Meanwhile, Sargassum transport to the GoM will also continue, indicating more beaching events in the Florida Keys and along the east coast of Florida. We will keep a close eye on how Sargassum in the CS and GoM as well as in the tropical Atlantic may evolve in the next two months. More updates will be provided by the end of June 2021, and more information and near real-time imagery can be found under the Sargassum Watch System (SaWS, https://optics.marine.usf.edu/projects/saws.html). -
Scrs/2014/176 Do Western Atlantic Bluefin Tuna Spawn Outside of the Gulf of Mexico?
SCRS/2014/176 DO WESTERN ATLANTIC BLUEFIN TUNA SPAWN OUTSIDE OF THE GULF OF MEXICO? RESULTS FROM A LARVAL SURVEY IN THE ATLANTIC OCEAN IN 2013 John T. Lamkin1, Barbara A. Muhling1,2, Estrella Malca1,2, Raúl Laiz-Carrión3, Trika Gerard1, Sarah Privoznik1,2, Yanyun Liu1,4, Sang-Ki Lee1,4, G. Walter Ingram Jr.1, Mitchell A. Roffer5, Frank Muller-Karger6, Josefina Olascoaga7, Laura Fiorentino8, Woody Nero1 and William J. Richards1 In 2013, a larval survey was conducted north and east of the Bahamas aboard the NOAA Ship NANCY FOSTER. Sampling areas were selected based on larval habitat model predictions, and daily satellite analysis of surface temperature and ocean color. Samples were collected at 97 stations, and 18 larval BFT (Thunnus thynnus) were found at 9 stations. Six of these stations came from oceanographically complex regions characterized by cyclonic and anticyclonic gyres. Larvae ranged in size from 3.22mm to 7.58 mm, corresponding to approximately 5-12 days in age. Analysis of satellite derived surface currents and CTD data suggest that these larvae were spawned and retained in this area. Larval habitat models show areas of high predicted abundance extending east to 650 W, but the actual extent of spawning in this area remains unknown. Key words Habitat, Spawning Grounds, Spawning Migrations, Fishery Oceanography 1Southeast Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 75 Virginia Beach Drive, Miami FL 33149, USA. 2Cooperative Institute for Marine and Atmospheric Studies, University of Miami, 4600 Rickenbacker Causeway, Miami, FL, 33149, USA. 3Centro Oceanográfico de Málaga, Instituto Español de Oceanografía, 29640 Fuengirola, Málaga, Spain 4NOAA Atlantic Oceanographic and Metereological Laboratory, 4301 Rickenbacker Causeway, Miami, FL 33149, USA 5Roffer’s Ocean Fish Forecasting (ROFFSTM), Melbourne, FL 32904, USA 6College of Marine Science, University of South Florida 140 Seventh Ave.