LV Sedimentology and Ecology of Shelves WiSe 2014/15 3) Siliciclastic Shelf Systems (Till Hanebuth) 1)Tropical and 2) Non-tropical Carbonates Shelf Systems.

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Presentation transcript:

LV Sedimentology and Ecology of Shelves WiSe 2014/15 3) Siliciclastic Shelf Systems (Till Hanebuth) 1)Tropical and 2) Non-tropical Carbonates Shelf Systems (Rebecca Rendle-Bühring) Introduction to Sedimentology and Ecology of Passive Continental Shelves. (Rebecca Rendle-Bühring) Lectures: 16 October 2014 Lectures and Exercises (GEO 1490/Geolab, FB5) 23 October 2014 Lectures and Core Practical at the IODP Core Repository, MARUM 30 October 2014 Lectures and Exercises (GEO 1490/Geolab, FB5) Lectures: 16 October 2014 Lectures (GEO 1490/Geolab, FB5) Lectures: 08 January 2015 Lectures and Exercises 15 January 2015 Lectures and Core Practical

Environmental Change e.g. sealevel Fluctuations Internal Architecture & Facies Relationships Seafloor Morphology Oceanographic/Se dimentary Processes LV Sedimentology and Ecology of Shelves WiSe 2014/15 3) Siliciclastic Shelves (Till Hanebuth) THEMES: Depositional Pattern on Modern Siliclclastic Shelves: Architecture, Processes and Bedform Classifications Evolution of Siliciclastic Shelves- Environmental Control and Sea Level Key Study-the Mauritania Shelf System- Sediment Core Practical

Bioerosion of Reefs LV Sedimentology and Ecology of Shelves WiSe 2014/15 1) Tropical Carbonates (Rebecca Rendle-Bühring) THEMES: Oceanography and Sedimentary Processes on Passive Continental Shelf Systems; Ecosystems and Management Tropical Factories and Carbonate Precipitation Types of Tropical Carbonate Deposition and their response to Environmental controls and sea level. Key Study-the Bahamas- Sediment Core Practical Sponges Parrot Fish Worms Echiniods Bivalves Barnacles Gastropods Tropical Reef Organisms

LV Sedimentology and Ecology of Shelves WiSe 2014/15 2) Non-tropical Carbonates (Rebecca Rendle-Bühring) THEMES: Non-tropical Shelf Carbonates: Global Distribution & Environmental Controls Cold Water Factories and Carbonate Precipitation Types of Cold Water Carbonate Deposition and their response to Environmental controls. Key Study-Northern Hemisphere Boreal to Polar Shelf Carbonates e.g. Norway's 1,000 year old Tisler Reef, m deep Most common cold-water coral is Lophelia pertusa

Sedimentary Structures and Processes of Continental Margins Canyon/channel systems Mass wasting Diapirim Contourites/Drifts

Carbonate mound Blocky facies Well-layered reflectors with thin transparent layers Headwall scars EW (Antobreh and Krastel 2006) Mauritania Slide Complex Cape Verde Rise Stacks of debris flow deposits Contouritic deposit Fluid escape features Thin well-layered reflector packages

Core GeoB 8523 (middle slope position) Clast-rich debrite with internal deformation structures within the clasts (210cm to 285cm), e.g. thinning, stretching and shearing and with a rotational fold structure in the matrix. A thin shell rich layer erosive cuts down into an over-consolidated and sheared hemipelagite unit beneath. Textural line drawing from radiograph analysis: (1) Hemipelagic units at the top and base (2) Turbidite bed in the middle section (3) Debrite in the lower section Henrich et al., Marine and Petroleum Geology, in press

Applications and jobs: Sedimentologist/ Geophysist Offshore technology Research projects Geological Hazzards, risk analysis Natural resources Hydrocarbon exploration Costal management Marine food and Energy industry

Sedimentary structures and processes: shelves and passive margins ( M5-2 (2,5 CP) Course schedule WS 2014/2015 : Thursday 08 ct – , Room GEO 1490/ Geolab 1. Course: Sedimentology and Ecology of shelves: Oceanography and sedimentary processes in continental shelf systems(lecture 2h); Ecosystems and management (lecture); Carbonate precipitation and factories (lecture) Rebecca Rendle- Bühring 2. Course: Sedimentology and Ecology of shelves: Modern carbonate systems, ecology, environmental control and sea level (lecture) + exercise: Bahamas sediment core (5h -Rebecca Rendle-Bühring) 3. Course: Sedimentology and Ecology of shelves: Architecture of carbonate shelf systems (lecture) + exercises (5h – Rebecca Rendle-Bühring) 4. Course: Seismic and acoustic imaging (5h –Volkhard Spiess, Tilmann Schwenk) 5. Course: Seismic and acoustic imaging (5h – Volkhard Spiess, Tilmann Schwenk) 6. Course: Seismic and acoustic imaging (5h – Volkhard Spiess, Tilmann Schwenk) 7. Course: Slides, Debrites (lecture + exercises) (2h – lecture (Tillmann Schwenk), 3h exercises - Rüdiger Henrich/Tillmann Schwenk) 8. Course: Fan Systems (2h- lecture, 3h exercises – Tilmann Schwenk) 9. Course: Contourite drifts (5h – Volkhard Spiess) 10. Course: Submarine Canyons (2h –lecture – Rüdiger Henrich, exercises on sediment cores Rüdiger Henrich/Tillmann Schwenk) 11. Course: Sedimentology and Ecology of shelves: Modern clastic systems, environmental control and sea level + excerises (5h- Till Hanebuth) 12. Course: Sedimentology and Ecology of shelves: Architecture of clastic shelf systems (lecture) + Mauritania shelf sediment cores (exercises) (5h- Till Hanebuth) 13. Course: Oral examination (20 minutes per candidate, two examiners). 14. Course: Report on project work/case studies (5h – participant presentations)