InterRidge 2023 Webinar Series | Dr. David W. Scholl
The InterRidge Office invited Dr. David W. Scholl (Senior Research Scientist, Emeritus at United States of Geological Survey) for the webinar. He will talk about ‘Atypical Origin and Evolution of the Aleutian-Bering Marginal Sea.' Detailed information can be found on the InterRidge website (https://interridge.org/webinar/).
Atypical Origin and Evolution of the Aleutian-Bering Marginal Sea
Dr. David W. Scholl (Senior Research Scientist, Emeritus at United State of Geological Survey)
Day and Time: 14:00 GMT (10:00 EST), Tuesday, 23rd May, 2023
Zoom Address: https://snu-ac-kr.zoom.us/j/96340741405?pwd=WDJqVlkwY0xUVW41ZVdtLzlxM0Jzdz09
Meeting ID: 963 4074 1405
Passcode: 815071
Szczecin Marginal Seas Webinars in March 2023
We warmly invite you to join a first presentation of the Szczecin Marginal Seas Webinars series within summer semester 2022/2023
for the Webinar to be held on March 16, 2023, 2:00 pm (CET).
Please, join our meeting for the lecture:
Late Cretaceous tectonic inversion within the S Baltic Sea – insight from regional seismic profile stretching between the West and the East European Platforms
Piotr Krzywiec1; Quong Nguyen2; Łukasz Słonka1; Michał Malinowski2; Regina Kramarska3; Niklas Ahlrichs4 , Christian Huebscher4
1 Institute of Geological Sciences, Polish Academy of Sciences, Warsaw, Poland
2 Institute of Geophysics, Polish Academy of Sciences, Warsaw, Poland
3 Polish Geological Institute, Gdańsk, Poland
4 Institute of Geophysics, University of Hamburg, Hamburg, Germany
to be presented by:
Prof. Dr. Piotr Krzywiec
Institute of Geological Sciences, Polish Academy of Sciences, Warsaw, Poland
Abstract
In 2016, 850 km of multichannel seismic reflection data of the BALTEC survey have been acquired offshore Poland within the transition zone between the East European Craton and the Paleozoic Platform. Acquired data, processed up to Kirchhoff pre-stack time migration, was integrated with other seismics available in this area and calibrated by deep and shallow wells. All this data provided new information regarding Late Cretaceous inversion i.e. the last major tectonic event that shaped geology of this area. It led to uplift of basement blocks, their localized erosion and formation of syn-inversion growth strata. This phase of geological evolution could be until now hardly resolved by industry seismic data due to limited shallow seismic imaging and very strong overprint of multiples. Within the SW Baltic Sea main structure formed during Late Cretaceous inversion is NW segment of the Mid-Polish Anticlinorium (MPA) that extends for over 1000 km from the vicinity of Bornholm towards the SE Poland and W Ukraine. Identified subtle thickness variations, progressive unconformities and contourites within the Upper Cretaceous succession document complex interplay of Late Cretaceous basin inversion, erosion and re-deposition. Seismic data from within the Bornholm-Darłowo fault zone located NE from the MPA imaged system of deeply rooted steep reverse faults and associated zones of prograding wedges that testify to complex depositional pattern controlled by transpression. Farther to the E, within the Ustka and Słupsk Blocks, Precambrian basement is overlain by Cambro-Silurian sedimentary cover. It is dissected by a system of steep, mostly reverse faults rooted in the deep basement. This fault system has been so far regarded as having been formed mostly in Paleozoic times, due to the Caledonian orogeny. As a consequence, Upper Cretaceous succession, locally present in this area, has been vaguely defined as a post-tectonic cover, locally onlapping uplifted Paleozoic blocks. Our results confirmed that, contrary to previous models, at least some of these deeply-rooted faults were active as a reverse faults during Late Cretaceous, in particular those faults that continue into the inverted Christianso Block farther to the North. It can be therefore unequivocally proved that large offshore blocks of Silurian and older rocks, located presently directly beneath the Cenozoic veneer, must have been at least partly covered by the Upper Cretaceous succession; then, they were uplifted during the widespread Late Cretaceous inversion. All these results prove that Late Cretaceous inversion in this part of Europe strongly affected also large areas located much farther towards the East than previously assumed.
The seminar will be held in a hybrid form, in room 111 building Mickiewicza 16 and parallel on the MS Teams platform.
The meeting room will be open from 1:30 pm (CET), but the seminar will begin at 2:00 pm (CET).
Microsoft Teams meeting
Join on your computer, mobile app or room device
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Meeting ID: 385 247 943 203
Passcode: bGmbe2
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Szczecin Marginal Seas Webinars on January
We warmly invite you to join the Szczecin Marginal Seas Webinar on January 26, 2023, 2:00 pm (CET) in addition to the regular program of this winter semester.
Please, join our meeting for the lecture:
Last Glacial Maximum lake sediments capture High Arctic surface ocean warming during Heinrich Event 2
to be presented by:
Dr. Willem G. M. van der Bilt
Department of Earth Sciences, University of Bergen,
Bjerknes Centre for Climate Research, Bergen, NO
Abstract
Throughout the Last Glacial period, widespread deposition of Ice Rafted Debris (IRD) marks phases of North Atlantic ice sheet instability during cold Stadial conditions. The causes for these so-called Heinrich Events (HEs) remain debated: while initially attributed to internal ice sheet dynamics, there is mounting evidence for an external ocean-climate forcing. In the latter scenario, ice rafting is thought to be driven by basal melt from a build-up of sub-surface heat in response to weakening ocean circulation. However, coeval shifts from perennial to seasonal sea ice conditions suggest that some heat may have escaped to the surface. We strengthen this notion, by presenting biomarker-based evidence for atmospheric warming from a unique Last Glacial Maximum (30-20 ka BP) lake sediment sequence from High Arctic Svalbard. Alkenone-derived changes in temperature (UK37) and hydroclimate (δD) indicate a rapid shift towards warmer surface conditions and more locally sourced precipitation at the onset of HE 2. These findings are supported by XRF evidence for lake water stratification and a shift towards n-alkane distributions indicative of less arid conditions. In conclusion, our data suggests that climate-forced Arctic ice sheet instability during HEs was triggered from below as well as above.
The seminar will be held in a hybrid form, in room 111 building Mickiewicza 16 and parallel on the MS Teams platform.
The meeting room will be open from 1:30 pm (CET), but the seminar will begin at 2:00 pm (CET).
To join the meeting please use the link:
https://teams.microsoft.com/l/meetup-join/19%3a0ee21c3b364e4709810bc45b7fbb4284%40thread.tacv2/1674495333830?context=%7b%22Tid%22%3a%22af892dd6-4563-4455-9c05-a398a43f2362%22%2c%22Oid%22%3a%221e9df312-5fc1-4e40-bc0d-ab7f66ee7bd8%22%7d
Meeting ID: 360 349 589 998
Access code: mXMpCg
EMBracing the Ocean - for artists
The European Marine Board (EMB) is looking for two new artists for the 2023 – 2024 edition of our ‘EMBracing the Ocean’ artist-in-residence programme. As we enter the third year of the UN Decade of Ocean Science for Sustainable Development, the need to connect people to our Ocean is more important than ever. The EMBracing the Ocean programme provides grants of €10,000 for creative individuals and groups to co-create artwork in collaboration with Ocean scientists to expand societies’ understanding of the Ocean’s value and inspire wide reaching societal change for Ocean sustainability.
The programme is open for applications until 20 February 2023 from creative individuals or groups from a wide variety of creative disciplines. Both emerging and established artists will be considered by the committee. Prior experience in co-creation with scientists and/or communities and working on sustainability topics is desirable. Applications are welcome from across the world, and from a wide range of creative disciplines, including but not limited to:
- visual arts (e.g. drawing, painting, filmmaking, photography, sculpting, digital arts, installation);
- literary arts (e.g. fiction, drama, poetry, storytelling);
- performing arts (e.g. dance, music, theatre); and
- traditional and indigenous arts.
More information on the call and how to apply is available on the EMB website: https://www.marineboard.eu/emb-artist-residence-programme. For any questions please email Britt Alexander at the EMB Secretariat (
We would be very grateful if you could share news of this call within your network, and to interact with and share our social media posts about the call:
Twitter: https://twitter.com/EMarineBoard/status/1612380375514226689?s=20&t=3g7czL-z6aSM_zZJffWvCg
Instagram: https://www.instagram.com/p/CnMHNXbLbyh/?utm_source=ig_web_copy_link
Linkedin: https://www.linkedin.com/feed/update/urn:li:activity:7018146103531307008
Facebook: https://www.facebook.com/photo?fbid=180961261205422&set=a.160064306628451
The EMBracing the Ocean programme is endorsed as an Ocean Decade activity to support the Ocean Decade's societal challenge of an inspiring and engaging Ocean. The programme additionally supports the goals of the EU Mission Restore our Ocean and Waters (Mission Ocean).
Szczecin Marginal Seas Webinars - January
We warmly invite you to join a last presentation of the Szczecin Marginal Seas Webinars series this winter semester
for the Webinar to be held on January 12, 2022, 2:00 pm (CET).
Please, join our online meeting for the lecture:
The fluvial pipeline: sediment and organic matter transfers in a lowland river – Rio Bermejo, Argentina
to be presented by:
Prof. Dr. Niels Hovius
GFZ German Research Centre for Geosciences,
Institute of Geosciences, University of Potsdam, DE
Abstract
Niels Hovius, Marisa Repasch, Joel Scheingross, Sophia Dosch, Dirk Sachse
Geomorphology, GFZ German Research Centre for Geosciences, Potsdam and University of Potsdam
Rivers are vital links in source to sink systems, feeding quantities of solids and solutes to the coastline. By transferring sediment, organic matter and weathering products into geological sinks, rivers affect the distribution of loads on the lithosphere, and regulate global biogeochemical cycles. While upland rivers function primarily as matter sources, lowland rivers can have significant exchange of load with surrounding floodplains, transient storage and attendant biochemical transformations. As a result, lowland river systems act as filter and transformers of source signals complicating the interpretation of downstream fluxes. Key questions about the functioning of this filter include the frequency of matter exchange between river channel and floodplain, the transit time of river solids, the transformation and fate of matter in transient storage, and the difference between upland input and lowland output fluxes. We have used the special attributes of the Rio Bermejo in northern Argentina to address these questions. The Rio Bermejo drains a section of the eastern Andes to the Rio Paraguay, crossing an 800 km wide foreland. The lowland section of the river flows 1300 km without tributaries, making it one of the longest single channels on Earth. Over its length, the Rio Bermejo has little human interference, and the river system can be considered to have natural behavior. We have sampled the river at various locations during the high flow season of the South American monsoon and during the low flow season. Sediment, organic matter and water samples were analysed for heavy minerals, cosmogenic radio-nuclides, organic matter isotopic composition and molecular make up, and water major element content and stable isotope composition. The seminar will highlight some of the major insights gleaned from this project.
The seminar will be held in a hybrid form, in room 111 building Mickiewicza 16 and on the MS Teams platform.
The meeting room will be open from 1:30 pm (CET), but the seminar will begin at 2:00 pm (CET).
To join the meeting please use the link: https://teams.microsoft.com/l/meetup-join/19%3a0ee21c3b364e4709810bc45b7fbb4284%40thread.tacv2/1673253949655?context=%7b%22Tid%22%3a%22af892dd6-4563-4455-9c05-a398a43f2362%22%2c%22Oid%22%3a%221e9df312-5fc1-4e40-bc0d-ab7f66ee7bd8%22%7d
Meeting ID: 391 745 036 654
Access code: RgHpo7