Textural Characteristics and Facies of Sand‐Rich Contourite Depositional
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Ngu Report 2017.046
Geological Survey of Norway P.O.Box 6315 Torgard REPORT NO-7491 TRONDHEIM Tel.: 47 73 90 40 00 ISSN: 0800-3416 (print) Report no.: 2017.046 ISSN: 2387-3515 (online) Grading: Open Title: Seabed sedimentary environments and sediments (genesis) in the Nordland VI area off northern Norway Authors: Valérie K. Bellec, Reidulv Bøe, Client: MAREANO Leif Rise, Aave Lepland, Terje Thorsnes County: Norway Commune: Map-sheet name (M=1:250.000) Map-sheet no. and -name (M=1:50.000) Deposit name and grid-reference: Number of pages: 24 Price (NOK): 110,- Map enclosures: 0 Fieldwork carried out: Date of report: Project no.: Person responsible: 2008-2016 15.12.2017 311720 Summary: This report presents maps of sedimentary environments and seabed sediments (genesis) in the Nordland VI management area off northern Norway. The maps, which cover about 25 000 km² and water depths from 60 m to 2700 m, are based on multibeam echosounder data (bathymetry and backscatter), 215 video lines each 700 m long, seabed sediment samples from 40 stations (grab, boxcore and multicore) and 5500 km of sub-bottom profiler data. The sedimentary environment map has 6 classes, focussing on present depositional environments (erosion and deposition). Large parts of the Nordland VI continental shelf are dominated by erosion processes, but some deposition occurs in topographic depressions and glacial troughs like Trænadjupet and Vesterdjupet. Hemipelagic sediments are deposited in deep water areas on the continental slope and abyssal plain. The seabed sediments (genesis) map comprises a geological interpretation of the uppermost few metres of the seabed, and has 10 classes. -
Part 629 – Glossary of Landform and Geologic Terms
Title 430 – National Soil Survey Handbook Part 629 – Glossary of Landform and Geologic Terms Subpart A – General Information 629.0 Definition and Purpose This glossary provides the NCSS soil survey program, soil scientists, and natural resource specialists with landform, geologic, and related terms and their definitions to— (1) Improve soil landscape description with a standard, single source landform and geologic glossary. (2) Enhance geomorphic content and clarity of soil map unit descriptions by use of accurate, defined terms. (3) Establish consistent geomorphic term usage in soil science and the National Cooperative Soil Survey (NCSS). (4) Provide standard geomorphic definitions for databases and soil survey technical publications. (5) Train soil scientists and related professionals in soils as landscape and geomorphic entities. 629.1 Responsibilities This glossary serves as the official NCSS reference for landform, geologic, and related terms. The staff of the National Soil Survey Center, located in Lincoln, NE, is responsible for maintaining and updating this glossary. Soil Science Division staff and NCSS participants are encouraged to propose additions and changes to the glossary for use in pedon descriptions, soil map unit descriptions, and soil survey publications. The Glossary of Geology (GG, 2005) serves as a major source for many glossary terms. The American Geologic Institute (AGI) granted the USDA Natural Resources Conservation Service (formerly the Soil Conservation Service) permission (in letters dated September 11, 1985, and September 22, 1993) to use existing definitions. Sources of, and modifications to, original definitions are explained immediately below. 629.2 Definitions A. Reference Codes Sources from which definitions were taken, whole or in part, are identified by a code (e.g., GG) following each definition. -
Mozambique Channel, South-West Indian Ocean) E
Deep-water dunes on drowned isolated carbonate terraces (Mozambique Channel, south-west Indian Ocean) E. Miramontes, S.J. Jorry, G. Jouet, J.W. Counts, S. Courgeon, P. Le Roy, C. Guerin, F.J. Hernández-Molina To cite this version: E. Miramontes, S.J. Jorry, G. Jouet, J.W. Counts, S. Courgeon, et al.. Deep-water dunes on drowned isolated carbonate terraces (Mozambique Channel, south-west Indian Ocean). Sedimentology, 2019, 66 (4), pp.1222-1242. 10.1111/sed.12572. hal-02944583 HAL Id: hal-02944583 https://hal.archives-ouvertes.fr/hal-02944583 Submitted on 12 Apr 2021 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. 1 Sedimentology Article In Press Archimer https://archimer.ifremer.fr Acceptation date : 2018 https://doi.org/10.1111/sed.12572 https://archimer.ifremer.fr/doc/00472/58418/ Deep-water dunes on drowned isolated carbonate terraces (Mozambique Channel, south-west Indian Ocean) Miramontes Elda 1, *, Jorry Stephan 2, Jouet Gwenael 2, Counts John 3, Courgeon Simon 4, Roy Philippe 1, Guerin Charline 2, Hernández-Molina F. Javier 5 1 UMR6538; CNRS-UBO; -
Accessing and Developing the Required Biophysical Datasets and Datalayers for Marine Protected Areas Network Planning and Wider Marine Spatial Planning Purposes
Accessing and developing the required biophysical datasets and datalayers for Marine Protected Areas network planning and wider marine spatial planning purposes Report No 8 Task 2A. Mapping of Geological and Geomorphological Features Version (Final) 27 November 2009 © Crown copyright 1 Project Title: Accessing and developing the required biophysical datasets and datalayers for Marine Protected Areas network planning and wider marine spatial planning purposes Report No 8: Task 2A. Mapping of Geological and Geomorphological Features Project Code: MB0102 Marine Biodiversity R&D Programme Defra Contract Manager: Jo Myers Funded by: Department for Environment Food and Rural Affairs (Defra) Marine and Fisheries Science Unit Marine Directorate Nobel House 17 Smith Square London SW1P 3JR Joint Nature Conservation Committee (JNCC) Monkstone House City Road Peterborough PE1 1JY Countryside Council for Wales (CCW) Maes y Ffynnon Penrhosgarnedd Bangor LL57 2DW Natural England (NE) North Minister House Peterborough PE1 1UA Scottish Government (SG) Marine Nature Conservation and Biodiversity Marine Strategy Division Room GH-93 Victoria Quay Edinburgh EH6 6QQ Department of Environment Northern Ireland (DOENI) Room 1306 River House 48 High Street Belfast BT1 2AW 2 Isle of Man Government (IOM) Department of Agriculture Fisheries and Forestry Rose House 51-59 Circular Road Douglas Isle of Man IM1 1AZ Authorship: A. J. Brooks ABP Marine Environmental Research Ltd [email protected] H. Roberts ABP Marine Environmental Research Ltd [email protected] N. H. Kenyon Associate [email protected] A. J. Houghton ABP Marine Environmental Research Ltd [email protected] ABP Marine Environmental Research Ltd Suite B Waterside House Town Quay Southampton Hampshire SO14 2AQ www.abpmer.co.uk Disclaimer: The content of this report does not necessarily reflect the views of Defra, nor is Defra liable for the accuracy of the information provided, nor is Defra responsible for any use of the reports content. -
The Scottish Marine Protected Area Project – Developing the Evidence Base for Impact Assessments and the Sustainability Appraisal Final Report
Planning Scotland’s Seas The Scottish Marine Protected Area Project – Developing the Evidence Base for Impact Assessments and the Sustainability Appraisal Final Report Marine Scotland The Scottish Marine Protected Area Project – Developing the Evidence Base for Impact Assessments and the Sustainability Appraisal Final Report Date: July 2013 Project Ref: R/4136/1 Report No: R.2097 © ABP Marine Environmental Research Ltd Version Details of Change Date 1.0 Draft 29.04.2013 2.0 Draft 15.05.2013 3.0 Final 07.06.2013 4.0 Final 28.06.2013 5.0 Final 01.07.2013 6.0 Final 05.07.2013 Document Authorisation Signature Date Project Manager: S F Walmsley PP 05.07.2013 Quality Manager: C E Brown 05.07.2013 Project Director: S C Hull 05.07.2013 ABP Marine Environmental Research Ltd ABPmer is certified by: Quayside Suite, Medina Chambers, Town Quay, Southampton, Hampshire SO14 2AQ Tel: +44 (0) 23 8071 1840 Fax: +44 (0) 23 8071 1841 Web: www.abpmer.co.uk Email: [email protected] All images copyright ABPmer apart from front cover (wave, anemone, bird) and policy & management (rockpool) Andy Pearson www.oceansedgepzhotography.co.uk The Scottish Marine Protected Area Project – Developing the Evidence Base for Impact Assessments and the Sustainability Appraisal Summary Introduction The Marine (Scotland) Act and the UK Marine and Coastal Access Act contain provisions for the designation of a network of Marine Protected Areas (MPAs) in Scottish territorial and offshore waters in order to protect marine biodiversity and geodiversity and contribute to a UK and international network of MPAs. -
45. Sedimentary Facies and Depositional History of the Iberia Abyssal Plain1
Whitmarsh, R.B., Sawyer, D.S., Klaus, A., and Masson, D.G. (Eds.), 1996 Proceedings of the Ocean Drilling Program, Scientific Results, Vol. 149 45. SEDIMENTARY FACIES AND DEPOSITIONAL HISTORY OF THE IBERIA ABYSSAL PLAIN1 D. Milkert,2 B. Alonso,3 L. Liu,4 X. Zhao,5 M. Comas,6 and E. de Kaenel4 ABSTRACT During Leg 149, a transect of five sites (Sites 897 to 901) was cored across the rifted continental margin off the west coast of Portugal. Lithologic and seismostratigraphical studies, as well as paleomagnetic, calcareous nannofossil, foraminiferal, and dinocyst stratigraphic research, were completed. The depositional history of the Iberia Abyssal Plain is generally characterized by downslope transport of terrigenous sedi- ments, pelagic sedimentation, and contourite sediments. Sea-level changes and catastrophic events such as slope failure, trig- gered by earthquakes or oversteepening, are the main factors that have controlled the different sedimentary facies. We propose five stages for the evolution of the Iberia Abyssal Plain: (1) Upper Cretaceous and lower Tertiary gravitational flows, (2) Eocene pelagic sedimentation, (3) Oligocene and Miocene contourites, (4) a Miocene compressional phase, and (5) Pliocene and Pleistocene turbidite sedimentation. Major input of terrigenous turbidites on the Iberia Abyssal Plain began in the late Pliocene at 2.6 Ma. INTRODUCTION tured by both Mesozoic extension and Eocene compression (Pyrenean orogeny) (Boillot et al., 1979), and to a lesser extent by Miocene com- Leg 149 drilled a transect of sites (897 to 901) across the rifted mar- pression (Betic-Rif phase) (Mougenot et al., 1984). gin off Portugal over the ocean/continent transition in the Iberia Abys- Previous studies of the Cenozoic geology of the Iberian Margin sal Plain. -
Hybrid Turbidite-Drift Channel Complexes: an Integrated Multiscale Model A
https://doi.org/10.1130/G47179.1 Manuscript received 7 November 2019 Revised manuscript received 27 January 2020 Manuscript accepted 28 January 2020 © 2020 The Authors. Gold Open Access: This paper is published under the terms of the CC-BY license. Published online 18 March 2020 Hybrid turbidite-drift channel complexes: An integrated multiscale model A. Fuhrmann1, I.A. Kane1, M.A. Clare2, R.A. Ferguson1, E. Schomacker3, E. Bonamini4 and F.A. Contreras5 1 Department of Earth and Environmental Sciences, University of Manchester, Williamson Building, Oxford Road, Manchester M13 9PL, UK 2 National Oceanography Centre, European Way, Southampton SO14 3HZ, UK 3 Equinor, Martin Linges vei 33, 1364 Fornebu, Norway 4 Eni Upstream and Technical Services, Via Emilia 1, 20097 San Donato Milanese, Milan, Italy 5 Eni Rovuma Basin, no. 918, Rua dos Desportistas, Maputo, Mozambique ABSTRACT sedimentological model for bottom current– The interaction of deep-marine bottom currents with episodic, unsteady sediment gravity influenced submarine channel complexes. flows affects global sediment transport, forms climate archives, and controls the evolution of continental slopes. Despite their importance, contradictory hypotheses for reconstructing past GEOLOGICAL SETTING flow regimes have arisen from a paucity of studies and the lack of direct monitoring of such The Jurassic to Paleogene basins offshore of hybrid systems. Here, we address this controversy by analyzing deposits, high-resolution sea- East Africa formed during the breakup of Gond- floor data, and near-bed current measurements from two sites where eastward-flowing gravity wana (Salman and Abdula, 1995). Following flows interact(ed) with northward-flowing bottom currents. Extensive seismic and core data Pliensbachian to Aalenian northwest-southeast from offshore Tanzania reveal a 1650-m-thick asymmetric hybrid channel levee-drift system, rifting, ∼2000 km of continental drift took place deposited over a period of ∼20 m.y. -
Hydrogeological Properties of Fault Zones in a Karstified Carbonate Aquifer (Northern Calcareous Alps, Austria)
Hydrogeol J DOI 10.1007/s10040-016-1388-9 PAPER Hydrogeological properties of fault zones in a karstified carbonate aquifer (Northern Calcareous Alps, Austria) H. Bauer1 & T. C. Schröckenfuchs 1 & K. Decker1 Received: 17 July 2015 /Accepted: 14 February 2016 # The Author(s) 2016. This article is published with open access at Springerlink.com Abstract This study presents a comparative, field-based impermeable fault cores only very locally have the potential hydrogeological characterization of exhumed, inactive fault to create barriers. zones in low-porosity Triassic dolostones and limestones of the Hochschwab massif, a carbonate unit of high economic Keywords Fractured rocks . Carbonate rocks . Fault zones . importance supplying 60 % of the drinking water of Austria’s Hydrogeological properties . Austria capital, Vienna. Cataclastic rocks and sheared, strongly cemented breccias form low-permeability (<1 mD) domains along faults. Fractured rocks with fracture densities varying by Introduction a factor of 10 and fracture porosities varying by a factor of 3, and dilation breccias with average porosities >3 % and per- Fault zones in the upper crust produce permeability heteroge- meabilities >1,000 mD form high-permeability domains. With neities that have a large impact on subsurface fluid migration respect to fault-zone architecture and rock content, which is and storage patterns (e.g. Agosta et al. 2010, 2012; Caine et al. demonstrated to be different for dolostone and limestone, four 1996;Faulkneretal.2010;Jourdeetal.2002; Mitchell and types of faults are presented. Faults with single-stranded mi- Faulkner 2012; Shipton and Cowie 2003; Shipton et al. 2006; nor fault cores, faults with single-stranded permeable fault Wibberley and Shimamoto 2003; Wibberley et al. -
Isolation of the South China Sea from the North Pacific Subtropical Gyre
www.nature.com/scientificreports OPEN Isolation of the South China Sea from the North Pacifc Subtropical Gyre since the latest Miocene due to formation of the Luzon Strait Shaoru Yin1*, F. Javier Hernández‑Molina2, Lin Lin3, Jiangxin Chen4,5*, Weifeng Ding1 & Jiabiao Li1 The North Pacifc subtropical gyre (NPSG) plays a major role in present global ocean circulation. At times, the gyre has coursed through the South China Sea, but its role in the evolutionary development of that Sea remains uncertain. This work systematically describes a major shift in NPSG paleo‑ circulation evident from sedimentary features observed in seismic and bathymetric data. These data outline two contourite depositional systems—a buried one formed in the late Miocene, and a latest Miocene to present‑day system. The two are divided by a prominent regional discontinuity that represents a major shift in paleo‑circulation during the latest Miocene (~ 6.5 Ma). The shift coincides with the further restriction of the South China Sea with respect to the North Pacifc due to the formation of the Luzon Strait as a consequence of further northwest movement of the Philippine Sea plate. Before that restriction, data indicate vigorous NPSG circulation in the South China Sea. Semi‑ closure, however, established a new oceanographic circulation regime in the latest Miocene. This work demonstrates the signifcant role of recent plate tectonics, gateway development, and marginal seas in the establishment of modern global ocean circulation. In the Pacifc Ocean, the North Pacifc subtropical gyre (NPSG) represents a surface level water mass that advects warm water from the tropics to central and higher-latitude areas of the North Pacifc basin. -
Book of Abstracts Vliz Young Marine Scientists’ Day
BOOK OF ABSTRACTS VLIZ YOUNG MARINE SCIENTISTS’ DAY VIVES, Brugge 20 February 2015 VLIZ SPECIAL PUBLICATION 71 - i - This publication should be quoted as follows: Jan Mees and Jan Seys (Eds). 2015. Book of abstracts – VLIZ Young Marine Scientists’ Day. Brugge, Belgium, 20 February 2015. VLIZ Special Publication 71. Vlaams Instituut voor de Zee – Flanders Marine Institute (VLIZ): Oostende, Belgium. xiv + 196 p. Vlaams Instituut voor de Zee Flanders Marine Institute VLIZ – InnovOcean site Wandelaarkaai 7 8400 Oostende, Belgium Tel. +32-(0)59-34 21 30 Fax +32-(0)59-34 21 31 E-mail: [email protected] http://www.vliz.be Photo cover: Sea view from the tallest building (Europe Center) of Ostend: view on the beach, the western dyke, and the RV Simon Stevin entering the port (August 2014) © VLIZ (Leontien De Wulf) Reproduction is authorized, provided that appropriate mention is made of the source. ISSN 1377-0950 - ii - PREFACE This is the ‘Book of Abstracts’ of the 15th edition of the VLIZ Young Marine Scientists’ Day, a one day event that was organised on 20 February, 2015 in VIVES, Brugge. This annual event has become more and more successful over the years. With more than 300 participants and circa 130 scientific contributions, it is fair to say that it is the place to be for Flemish marine researchers and for the end-users of their research. It is an important networking opportunity, where young scientists can meet and interact with their peers, learn from each other, build their personal professional network and establish links for collaborative and interdisciplinary research. -
Why and How Do We Study Sediment Transport? Focus on Coastal Zones and Ongoing Methods
water Editorial Why and How Do We Study Sediment Transport? Focus on Coastal Zones and Ongoing Methods Sylvain Ouillon ID LEGOS, Université de Toulouse, IRD, CNES, CNRS, UPS, 14 Avenue Edouard Belin, 31400 Toulouse, France; [email protected]; Tel.: +33-56133-2935 Received: 22 February 2018; Accepted: 22 March 2018; Published: 27 March 2018 Abstract: Scientific research on sediment dynamics in the coastal zone and along the littoral zone has evolved considerably over the last four decades. It benefits from a technological revolution that provides the community with cheaper or free tools for in situ study (e.g., sensors, gliders), remote sensing (satellite data, video cameras, drones) or modelling (open source models). These changes favour the transfer of developed methods to monitoring and management services. On the other hand, scientific research is increasingly targeted by public authorities towards finalized studies in relation to societal issues. Shoreline vulnerability is an object of concern that grows after each marine submersion or intense erosion event. Thus, during the last four decades, the production of knowledge on coastal sediment dynamics has evolved considerably, and is in tune with the needs of society. This editorial aims at synthesizing the current revolution in the scientific research related to coastal and littoral hydrosedimentary dynamics, putting into perspective connections between coasts and other geomorphological entities concerned by sediment transport, showing the links between many fragmented approaches of the topic, and introducing the papers published in the special issue of Water on “Sediment transport in coastal waters”. Keywords: sediment transport; cohesive sediments; non cohesive sediments; sand; mud; coastal erosion; sedimentation; morphodynamics; suspended particulate matter; bedload 1. -
Rich Contourite Depositional Systems
Article type : Original Manuscript Textural characteristics and facies of sand-rich contourite depositional systems BRACKENRIDGE, R.E. *, STOW, D.A.V. *, HERNÁNDEZ-MOLINA, F.J. †, JONES, C. ‡, MENA, A. †,§, ALEJO, I. § , DUCASSOU, E. ¶, LLAVE, E. ** , ERCILLA, G. †† , NOMBELA, M.A. §, PEREZ-ARLUCEA, M. § , and FRANCES, G. § * School of Energy, Geoscience, Infrastructure and Society, Heriot-Watt University, Edinburgh, EH144AS, United Kingdom (E-mail: [email protected]) † Dept. Earth Sciences, Royal Holloway University, London, TW20 0EX Egham, Surrey, United Kingdom ‡ School of Geography and the Environment, Oxford University, Oxford, OX1 3QY, United Kingdom § Dpto. de Xeociencias Mariñas e O.T., Univ. Vigo, E-36310 Vigo (Pontevedra), Spain ¶ Université de Bordeaux, UMR CNRS 5805 EPOC, Talence cedex, France ** Instituto Geológico y Minero de España (IGME), Rios Rosas 23, 28003 Madrid, Spain †† Centro de Investigaciones Marinas y Ambientales (CMIMA-CSIC), Paseo Marítimo Barceloneta, 37-49, 08003 Barcelona, Spain Associate Editor – Mariano Marzo Short Title – Sand-rich contourite systems ABSTRACT This work presents a detailed study of CONTOURIBER and Integrated Ocean Drilling Program 339 sediment data targeting sand-rich contourites in the Eastern Gulf of Cadiz. All of the collected sediments are interpreted as contourites (deposited or reworked by bottom currents) on the basis of oceanographic setting, seismic and morphometric features and facies characteristics. A variety of sandy and associated facies are found across the study area including: (i) bioturbated muddy contourites; (ii) mottled silty contourites; (iii) very fine mottled and fine-grained bioturbated sandy contourites; (iv) massive and laminated sandy contourites; and (v) coarse sandy/gravel contourites. The thickest sands occur within contourite channels and there is a marked reduction in sand content laterally away from channels.