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Tethys-Atlantic-Panthalassa, Global Mesozoic ocean fertility, silica burrial and radiolarian biochronology

English title Tethys-Atlantic-Panthalassa, Global Mesozoic ocean fertility, silica burrial and radiolarian biochronology
Applicant Baumgartner Peter
Number 162670
Funding scheme Project funding (Div. I-III)
Research institution Institut des sciences de la Terre Université de Lausanne
Institution of higher education University of Lausanne - LA
Main discipline Palaeontology
Start/End 01.10.2015 - 31.08.2018
Approved amount 308'366.00
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All Disciplines (3)

Discipline
Palaeontology
Geology
Geochemistry

Keywords (12)

Mesozoic; Radiolarian biochronology; Early Tertiary; Paleoceanography; Circum-Caribbean Terranes; Sediment geochemistry; Caribbean Seaway; Oceanic Palaeoenvironments; Global circulation; Si-cycle; Radiolarites; silicium and oxygene stable isotopes

Lay Summary (French)

Lead
Le sous-projet A vise à établir des liens entre la formation des dépôts siliceux océaniques à radiolaires du Mésozoïque, et la circulation océanique, le paléoclimat et le cycle de la silice de cette époque. Une question fondamentale concerne l’impact de la désintégration progressive de la Pangée au Jurassique, sur la circulation océanique globale : Existait-il un paléo-courant cri cum-global au Mésozoïque ? Nous espérons estimer la bio-productivité siliceuse en analysant les isotopes stables du silicium et de l’oxygène des radiolaires.Le sous-projet B a pour but de créer une nouvelle biozonation pour le Crétacé supérieur à l’aide des radiolaires , en intégrant plusieurs zonations régionales, ainsi qu’une vaste base de données élaborée à partir des échantillons provenant de forages dans les océans (DSDP/ODP). La méthode des «Associations Unitaires», spécialement adaptée à l’enregistrement souvent incomplet des radiolaires, permet d’intégrer des données de nombreuses localités.
Lay summary

Le sous-projet A (les derniers 15 mois d’un travail de doctorat, projet 200020-143894) établit des liens entre la distribution des sédiments siliceux à radiolaires, les changements de la circulation océanique et le paléoclimat pendant le Mésozoïque.  Les taux d’accumulation sont estimés à l’aide de la cyclo-stratigraphie dans des coupes typiques qui représentent la Neotethys et Panthalassa (Italie, Japon, Californie). A l’aide des analyses géochimiques nous déterminons l’origine des argiles contenues dans les radiolarites. Les rapports des isotopes stables du silicium et de l’oxygène semblent permettre l’estimation de la paléo-productivité de la silice et des paléo-températures océaniques.

Le sous-projet B (engagement d’un post-doc pour 2 ans) établit une nouvelle biozonation à radiolaires pour la période du Crétacé supérieur (100-66 millions d’années avant l’actuel). Les différentes échelles bio-chronologiques à radiolaires existantes  montrent des contradictions liées à l’enregistrement souvent incomplet des faunes à radiolaires. Nous avons déjà élaboré une vaste base de données à partir des échantillons provenant de forages dans les océans (DSDP/ODP). La définition précise des espèces fossiles connus et nouvelles permettra une synthèse basée sur la méthode des « Associations Unitaires » spécialement adaptée  à l’enregistrement discontinu des radiolaires dans les océans et les chaines de montagne.

Direct link to Lay Summary Last update: 20.10.2015

Responsible applicant and co-applicants

Employees

Publications

Publication
Synthesis of terrane stratigraphy and assembly of S-Central America
BaumgartnerPeter O., AndjicGoran, Baumgartner-MoraClaudia, BuchsDavid, BandiniAlexandre, FloresKennet, BaratFlore (2018), Synthesis of terrane stratigraphy and assembly of S-Central America, in Hedberg: Geology of Middle America – the Gulf of Mexico, Yucatan, Caribbean, Grenada and Tobago Basi, SiguenzaAAPG Datapages Search and discovery, Tulsa.
volumeMesozoic radiolarian biochronology – current status and future directions
Gorican Spela, O'Dogherty Luis, Baumgartner Peter O., Carter Elizabeth S., Matsuoka Atsushi (2018), volumeMesozoic radiolarian biochronology – current status and future directions, in Revue de Micropaléontologie Available online 7 September 2018 In Press, Corrected ProofWhat are Corr.
Evolution of siliceous plankton and radiolarite - its relation with the carbon and silicon cycles and global climat
BaumgartnerPeter O., BôleMaximilien, IkedaMaximilien, HoriRie (2018), Evolution of siliceous plankton and radiolarite - its relation with the carbon and silicon cycles and global climat, in Abstract collection, IPC 2018, Paris.
Global paleoclimatic vs. local endogenic impact on short-lived Lager Benthic Foraminifer-rhodoid photozoan carbonates in Central America and the Caribbean
Baumgartner-MoraClaudia, AndjicGoran, BaumgartnerPeter O. (2018), Global paleoclimatic vs. local endogenic impact on short-lived Lager Benthic Foraminifer-rhodoid photozoan carbonates in Central America and the Caribbean, in The Fossil Week Abstract Book, ParisInternational Palaeontological Association , Paris.
Full-text available Carbon-isotope stratigraphy and pelagic biofacies of the Middle–Upper Jurassic transition in the Tethys–Central Atlantic connection
O'DohjertyLuis, AguadoRoque, BaumgartnerPeter O., BillMarkus, GoricanSpela, SandovalJose, SequeirosLeandro (2018), Full-text available Carbon-isotope stratigraphy and pelagic biofacies of the Middle–Upper Jurassic transition in the Tethys–Central Atlantic connection, in Palaeogeography Palaeoclimatology Palaeoecology , 507, 129-144.
Rafting on macro-algae (Sargassum) of symbiont-bearing Larger Benthic Foraminifera, key to their dispersal in recent and ancient oceans
Baumgartner-Mora Claudia, Btiguglio Antonino, Kocsis Laszlo, Majewska Roksana, Roslim Amajita, Andjic Goran, Baumgartner Peter O. (2018), Rafting on macro-algae (Sargassum) of symbiont-bearing Larger Benthic Foraminifera, key to their dispersal in recent and ancient oceans, in Abstract Collection, EdinburghFORAMS 2018, Edinburgh.
The Mesozoic oceanic silica cycle - insights from silicon and oxygen isotopes of radiolarian silica measured in situ by SIMS (secondary ion mass spectrometry) in radiolarites
BôleMaximilien (2018), The Mesozoic oceanic silica cycle - insights from silicon and oxygen isotopes of radiolarian silica measured in situ by SIMS (secondary ion mass spectrometry) in radiolarites, PhD Université de Lausanne, Lausanne.
Rapid vertical motions and formation of volcanic arc gaps: Plateau collision recorded in the forearc geological evolution (Costa Rica margin)
AndjicGoran, Baumgartner Peter O., Baumgartner-MoraClaudia (2018), Rapid vertical motions and formation of volcanic arc gaps: Plateau collision recorded in the forearc geological evolution (Costa Rica margin), in Basin Research, 30(5), 863-894.
Tectono‐stratigraphic response of the Sandino Forearc Basin (N‐Costa Rica and W‐Nicaragua) to episodes of rough crust and oblique subduction
AndjicGoran, Baumgartner-MoraClaudia (2018), Tectono‐stratigraphic response of the Sandino Forearc Basin (N‐Costa Rica and W‐Nicaragua) to episodes of rough crust and oblique subduction, in The Depositional Record, 4(1), 90-132.
Collision of bathymetric features: relative timing of transient forearc uplift and arc gap formation
AndjicGoran, BaumgartnerPeter O., Baumgartner-MoraClauida (2018), Collision of bathymetric features: relative timing of transient forearc uplift and arc gap formation, in Abstracts with programs, Washington DCAmerican Geophysical Union, Washington DC.
Keynote: Panthalassa and Neotethys - two giant oceans facing the break-up of Pangea - Mesozoic ocean history and circulation
BaumgartnerPeter O., HoriRie, BôleMaximilien (2017), Keynote: Panthalassa and Neotethys - two giant oceans facing the break-up of Pangea - Mesozoic ocean history and circulation, in 1st International Congress on Earth Sciences, Abstract Book, Brunei DarussalamUniversiti Brunei Darussalam, Brunei Darussalam.
The genus Heterostegina (Eocene to recent) in the american bioprovince: A larger foraminifer of the open marine environment
Baumgartner-MoraClaudia, CortesJorge, BeumgartnerPater O. (2017), The genus Heterostegina (Eocene to recent) in the american bioprovince: A larger foraminifer of the open marine environment, in 1st International Congress on Earth Sciences, Abstract Book, Brunei DarussalamUniversiti Brunei Darussalam, Brunei Darussalam.
Paleocene-earliest Eocene Larger Benthic Foraminifera and Ranikothalia-bearing carbonate paleo-environments of Costa Rica (South Central America)
Baumgatner-MoraClaudia, BaumgartnerPeter O. (2017), Paleocene-earliest Eocene Larger Benthic Foraminifera and Ranikothalia-bearing carbonate paleo-environments of Costa Rica (South Central America), in Micropaleontology, 62(6), 453-508.
Coniacian-Santonian organic-rich Loma Chumico Formation of N-Costa Rica: An expression of Oceanic Anoxic Event 3?
AndjicGoran, BaumgartnerPeter O., Baumgartner-MoraClaudia (2017), Coniacian-Santonian organic-rich Loma Chumico Formation of N-Costa Rica: An expression of Oceanic Anoxic Event 3?, in Hedberg: Geology of Middle America – the Gulf of Mexico, Yucatan, Caribbean, Grenada and Tobago Basi, SiguenzaAAPG Datapages, Search and Discovery, Tula.
Radiolarian biochronology and paleoceanography of Pacific Terranes in Central America and the Caribbean
BaumgartnerPeter O., AndjicGoran, Sandoval-GutierezMaria, Bandini-MaederAlexandre, DiserensMarc-Olivier, Baumgartner-MoraClauida, KukocDuje (2017), Radiolarian biochronology and paleoceanography of Pacific Terranes in Central America and the Caribbean, in Hedberg: Geology of Middle America – the Gulf of Mexico, Yucatan, Caribbean, Grenada and Tobago Basi, SiguenzaAAPG Datapages, Search and Discovery, Tula.
Discovery of the oldest fossils of Panama: Early Cretaceous radiolarians from Miocene conglomerate in the Canal Zone
KuKocDuje, BuchsDavid M., BaumgartnerPeter O., MirandaRoberto, IrvingDerek (2017), Discovery of the oldest fossils of Panama: Early Cretaceous radiolarians from Miocene conglomerate in the Canal Zone, in Radiolaria 40, Interrad XV Abstracts, NiigataThe Inetrnational Association of Radiolarists, Niigata.
Oxygen isotopes and trace element stratigraphy of the Middle Jurassic radiolarite section at Colle di Sogno, Lombardy Basin, N-Italy
BôleMaximilien, IkedaMasayuki, BaumgartnerPeter O. (2017), Oxygen isotopes and trace element stratigraphy of the Middle Jurassic radiolarite section at Colle di Sogno, Lombardy Basin, N-Italy, in Radiolaria 40, Inetrrad XV Abstracts, NiigataThe International Asssociation of Radiolarists, Niigata.
Panthalassa and Neotethys - two siliceous giants facing the break-up of Pangea
BaumgartnerPeter O., HoriRie, BôleMaximilien (2017), Panthalassa and Neotethys - two siliceous giants facing the break-up of Pangea, in Radiolaria 40, Interrad XV Abstracts, NiigataTHE INTERNATIONAL ASSOCIATION OF RADIOLARISTS, Niigata.
Radiolarite versus pelagic carbonate sedimentation during the Jurassic-Cretaceous transition, Panthalassa-Tethys- Atlantic-Protocaribbean – paleofertility and ocean circulation
BaumgartnerPeter O., MutterloseJörg, HoriRie, BôleMaximilien (2017), Radiolarite versus pelagic carbonate sedimentation during the Jurassic-Cretaceous transition, Panthalassa-Tethys- Atlantic-Protocaribbean – paleofertility and ocean circulation, in RADIOLARIA 40, Interrad XV, Abstracts, NiigataTHE INTERNATIONAL ASSOCIATION OF RADIOLARISTS, Niigata.
Secular variations of oxygen and silicon isotopes in Mesozoic radiolarites from Panthalassa and Tethys - proxies for paleotemperature and paleoproductivity
BôleMaximilien, BaumgartnerPeter O., HoriRie, IkedaMasayuki (2017), Secular variations of oxygen and silicon isotopes in Mesozoic radiolarites from Panthalassa and Tethys - proxies for paleotemperature and paleoproductivity, in Radiolaria 40, Interrad XV Abstracts, NiigataThe International Association of Radiolarists, Niigata.
Evolution of Late Cretaceous Radiolaria - relations with the Caribbean Large Igneous Province and carbon isotope shifts
Baumgartner Peter O., Kukoc Duje, AndjicGoran, O'DoghertyLuis (2017), Evolution of Late Cretaceous Radiolaria - relations with the Caribbean Large Igneous Province and carbon isotope shifts, in 33 JORNADAS DE PALEONTOLOGÍA, CadixSociedad Española de Paleontología, Cadix.
Palaeocene-earliest Eocene Ranikothalia-bearing carbonate palaeoenvironments of Costa Rica and W-Panama (S-Central America)
Baumgartner-Mora Claudia, Baumgartner Peter O. (2017), Palaeocene-earliest Eocene Ranikothalia-bearing carbonate palaeoenvironments of Costa Rica and W-Panama (S-Central America), in Abstract Collection, EdinburghFORAMS 2018, Edinburgh.
Late Mesozoic–Cenozoic sedimentary and tectonic evolution of Middle American plateau and forearc terranes (Nicaragua, Costa Rica)
AndjicGoran (2017), Late Mesozoic–Cenozoic sedimentary and tectonic evolution of Middle American plateau and forearc terranes (Nicaragua, Costa Rica), PhD Université de Lausannne, Lausanne.
Neogene paleoceanography of the eastern equatorial Pacific based on the radiolarian record of IODP drill sites off Costa Rica
SandovalMaria I, BoltovskoyDemetrio, BaxterAlan T., BaumgartnerPeter O. (2017), Neogene paleoceanography of the eastern equatorial Pacific based on the radiolarian record of IODP drill sites off Costa Rica, in G3, Geochemistry, Geophysics, Geosystems, 18(3), 889-906.
Punctuated chlorozoan carbonate paleo-environments - A biotic response to accretion tectonics and stalled arc activity (Late Cretaceous-Cenozoic, Caribbean Plate)
Baumgartner-MoraClaudia, AndjicGoran, BaumgartnerPeter =. (2016), Punctuated chlorozoan carbonate paleo-environments - A biotic response to accretion tectonics and stalled arc activity (Late Cretaceous-Cenozoic, Caribbean Plate), in 14th Swiss geoscience Meeting, Abstract volume, GenevaSwiss Academy of Sciences, Bern.
Revision of some Late Cretaceous multicyrtid Nassellaria, a contribution to the biostratigraphy the Caribbean Large Igneous Province
BaumgartnerPeter O., DumitricaPaulian, AndjicGoran (2016), Revision of some Late Cretaceous multicyrtid Nassellaria, a contribution to the biostratigraphy the Caribbean Large Igneous Province, in Abstract Volume 14th Swiss Geoscience Meeting, Swiss Academy of Sciences, Bern.
Evolution of Late Cretaceous Radiolaria and the Caribbean Large Igneous Province
BaumgartnerPeter O., KukocDuje, AndjicGoran, DumitricaPaulian (2016), Evolution of Late Cretaceous Radiolaria and the Caribbean Large Igneous Province, in TMS Annual General Meeting 2016, LilleThe Micropalaeontological Society, Lille.
Pre-subduction metasomatic enrichment of the oceanic lithosphere induced by plate flexure
Pilet Sébastien, AbeN., RochatLaetitia, KaczmarekM.-A., HiranoN., MachidaS., BuchsD. M., BaumgartnerP.O., MüntenerOthmar (2016), Pre-subduction metasomatic enrichment of the oceanic lithosphere induced by plate flexure, in Nature Geosciences, 8, 898-903.
Orbital-scale changes in redox condition and biogenic silica/detrital fluxes of the Middle Jurassic Radiolarite in Tethys (Sogno, Lombardy, N-Italy): Possible link with glaciation?
IkedaMasayuki, BôleMaximilien, BaumgartnerPeter O. (2016), Orbital-scale changes in redox condition and biogenic silica/detrital fluxes of the Middle Jurassic Radiolarite in Tethys (Sogno, Lombardy, N-Italy): Possible link with glaciation?, in Palaeogeography, Palaeoclimatology, 457, 247-257.
Late Cretaceous and Cenozoic Larger Benthic Foraminifera in punctuated carbonate paleoenvironments of Central America and the Caribbean. PhD-thesis, University of Lausanne
Baumgartner-MoraClaudia (2016), Late Cretaceous and Cenozoic Larger Benthic Foraminifera in punctuated carbonate paleoenvironments of Central America and the Caribbean. PhD-thesis, University of Lausanne, PhD University of Lausanne, Lausanne.
Evidence from accreted seamounts for a depleted component in the early Galapagos plume
Buchs David M., Hoernle Kaj, Hauff Folkmar, Baumgartner Peter O. (2016), Evidence from accreted seamounts for a depleted component in the early Galapagos plume, in Geology, 44(5), 383-386.
Geodynamic evolution of the Earth over the Phanerozoic: Plate tectonic activity and palaeoclimatic indicators
VérardChristian, HochardCyril, BaumgartnerPeter O., StampfliGérard M., LiuMin (2016), Geodynamic evolution of the Earth over the Phanerozoic: Plate tectonic activity and palaeoclimatic indicators, in Journal of Palaeogeography, 4(2), 167-188.
Late Cretaceous – Paleogene forearc sedimentation and accretion of oceanic plateaus and seamounts along the Middle American convergent margin (Costa Rica)
BaumgartnerPeter O., Baumgartner-MoraClaudia, AndjicGoran (2016), Late Cretaceous – Paleogene forearc sedimentation and accretion of oceanic plateaus and seamounts along the Middle American convergent margin (Costa Rica), in EGU General Assembly 2016, ViennaGeophysical Research Abstracts, Vienna.
Multiple embryos in the Lepidocyclina pustulosa group as possible indicators of palaeoenvironmental conditions: The case of the Late Eocene Toluviejo Formation (Sinú Domain, Caribbean, Colombia
Baumgartner-MoraClaudia, BaumgartnerPeter O., Rincon MartinezDaniel, Salazar OrtizEduard A. (2016), Multiple embryos in the Lepidocyclina pustulosa group as possible indicators of palaeoenvironmental conditions: The case of the Late Eocene Toluviejo Formation (Sinú Domain, Caribbean, Colombia, in Geophysical Research Abstracts, ViennaGeophysical Research Abstracts, Vienna.
Silicon and oxygen isotopic trends in Mesozoic radiolarites
BôleMaximilien, BaumgartnerPeter O., BaumgartnerLukas, BouvierAnne-Sophie, HoriRie, IkedaMasayuki (2016), Silicon and oxygen isotopic trends in Mesozoic radiolarites, in Geophysical Research Abstracts, EGU General Assembly 2016, ViennaCopernicus, Vienna.
Upper Paleogene shallow-water events in the Sandino Forearc Basin, Nicaragua-Costa Rica – response to tectonic uplift
AndjicGoran, Baumgartner-MoraClaudia, BaumgartnerPeter O. (2016), Upper Paleogene shallow-water events in the Sandino Forearc Basin, Nicaragua-Costa Rica – response to tectonic uplift, in Geophysical Research Abstracts, EGU General Assembly 2016, ViennaCopernicus, Vienna.
An upper Paleogene shallowing-upward sequence in the southern Sandino Forearc Basin (NW Costa Rica): response to tectonic uplift
AndjicGoran, Baumgartner-MoraClaudia, BaumgartnerPeter O. (2016), An upper Paleogene shallowing-upward sequence in the southern Sandino Forearc Basin (NW Costa Rica): response to tectonic uplift, in Facies, 69(9), 1-34.
Paleocene-earliest Eocene Larger Benthic Foraminifera and Ranikothalia-bearing carbonate paleo-environments of Costa Rica (South Central America)
Baumgartner-Mora Claudia, Baumgartner Peter O. (2016), Paleocene-earliest Eocene Larger Benthic Foraminifera and Ranikothalia-bearing carbonate paleo-environments of Costa Rica (South Central America), in Micropaleontology, 62(6), 453-508.
Modeling the Middle Jurassic ocean circulation
BrunettiMaura, VérardChristian, BaumgartnerPeter O. (2015), Modeling the Middle Jurassic ocean circulation, in Journal of Palaeogeography, 4(4), 371-383.
Compositional diversity in peridotites as result of amulti-process history: The Pacific-derived Santa Elena ophiolite, northwest Costa Rica
Escuder-Viruete Javier, Baumgartner Peter O., Castillo-Carrion Mercedes (2015), Compositional diversity in peridotites as result of amulti-process history: The Pacific-derived Santa Elena ophiolite, northwest Costa Rica, in Lithos, 251, 16-34.
Late Cretaceous radiolarian biochronology of the Pedro Brand section, Tireo Group, eastern Central Cordillera, Dominican Republic: A contribution to the stratigraphy of the Caribbean Large Igneous Pro
SandovalMaria, BaumgartnerPeter O., Escuder-VirueteJavier, GabitesJanet, Mercier de LéèinaiBernarrd (2015), Late Cretaceous radiolarian biochronology of the Pedro Brand section, Tireo Group, eastern Central Cordillera, Dominican Republic: A contribution to the stratigraphy of the Caribbean Large Igneous Pro, in Revue de Micropaléontologie, 58(2), 85-106.
Metamorphic history of riebeckite- and aegirine-augite-bearing high-pressure–low-temperature blocks within the Siuna Serpentinite Mélange, northeastern Nicaragua
Flores Kennet, SkoraSusanne, MartinCeline, HarlowGeorge E., RodriguezDionisio, BaumgartnerPeter O. (2015), Metamorphic history of riebeckite- and aegirine-augite-bearing high-pressure–low-temperature blocks within the Siuna Serpentinite Mélange, northeastern Nicaragua, in International Geology Review, 5(5-8), 943-977.
3D palaeogeographic reconstructions of the Phanerozoic versus sea-level and Sr-ratio variations
VérardChristian, HochardCyril, BaumgartnerPeter O., StampfliGérard M., LiuMin (2015), 3D palaeogeographic reconstructions of the Phanerozoic versus sea-level and Sr-ratio variations, in Journal of Palaeogeography, 4(1), 64-84.
Collision of the Caribbean Large Igneous Province with the Americas: earliest evidence from the forearc of Costa Rica
AndijcGoran, Baumgartner Peter O., Baumgartner-MoraClaudia, Collision of the Caribbean Large Igneous Province with the Americas: earliest evidence from the forearc of Costa Rica, in Geological Society of Amercia Bulletin, B35037R.

Collaboration

Group / person Country
Types of collaboration
Dr. David Buchs, School of Earth and Ocean Sciences, Cardiff University, UK Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Prof. Atsushi Matsuoka,Niigata University Japan (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Prof. Masayuki Ikeda, Department of Geosciences, Shizuoka University Japan (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Rie Hori, Ehime University Graduate School of Science and Engineering Mathematics, Physics, Japan (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Dr. Spela Gorican, Paleontoloski institut Ivana Rakovca, ZRC SAZU, Ljubljana Slovenia (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Dr. Marco Chiari, CNR, University of Florence Italy (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Dr. Maura Brunetti, Institut des sciences de l'environnement, UNIGE Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
5TH INTERNATIONAL PALAEONTOLOGICAL CONGRESS 2018 Talk given at a conference Keynote: Evolution of siliceous plankton and radiolarite - its relation with the carbon and silicon cycles and global climate 09.07.2018 Paris, France Baumgartner Peter;
AAPG Hedberg Conference 2018: Geology of Middle America – the Gulf of Mexico, Yucatan, Caribbean, Grenada and Tobago Basins and Their Margins Talk given at a conference Synthesis of terrane stratigraphy and assembly of S-Central America 02.07.2018 Siguenza, Spain Kukoc Duje; Baumgartner Peter;
FORAMS 2018: Foraminifera in a Changing World Poster Rafting on macro-algae (Sargassum) of symbiont-bearing Larger Benthic Foraminifera, key to their dispersal in recent and ancient oceans 17.06.2018 Edinburgh, Great Britain and Northern Ireland Baumgartner Peter;
1st. International Congress on Earth Sciences, Brunei Darussalam 2017 Talk given at a conference Keynote: Panthalassa and Neotethys - two giant oceans facing the break-up of Pangea - Mesozoic ocean history and circulation 15.11.2017 Bandar Seri Bagawan, Brunei Darussalem Bôle Maximilien; Baumgartner Peter;
THE INTERNATIONAL ASSOCIATION OF RADIOLARISTS: Interrad 15, Niigata 2017 Talk given at a conference Panthalassa and Neotethys - two siliceous giants facing the break-up of Pangea 27.10.2017 Niigata, Japan Bôle Maximilien; Kukoc Duje; Baumgartner Peter;
33a JORNADAS DE PALEONTOLOGÍA 2017, Sociedad Española de Paleontología Talk given at a conference Evolution of Late Cretaceous Radiolaria - relations with the Caribbean Large Igneous Province and carbon isotope shifts 27.09.2017 Cadix, Spain Kukoc Duje; Baumgartner Peter;
14th Swiss Geoscience Meeting Talk given at a conference Revision of some Late Cretaceous multicyrtid Nassellaria, a contribution to the biostratigraphy the Caribbean Large Igneous Province 18.11.2016 Geneva, Switzerland Baumgartner Peter;
The Micropalaeontological Society, Annual General Meeting 2016 Talk given at a conference Evolution of Late Cretaceous Radiolaria and the Caribbean Large Igneous Province 17.11.2016 Lille, France Kukoc Duje; Baumgartner Peter;
EGU European Geosciences Union, General Assembly 2016 Talk given at a conference Late Cretaceous – Paleogene forearc sedimentation and accretion of oceanic plateaus and seamounts along the Middle American convergent margin (Costa Rica) 17.04.2016 Vienna, Austria Baumgartner Peter; Kukoc Duje; Bôle Maximilien;


Awards

Title Year
Best poster at Interrad XV, International mMeeting of Radiolarists, Niigata 2017
Goran Andjic was awarded for his PhD (partially funded by this project) the Faculty of Geosciences and Environment prize for best degrees. 2017

Associated projects

Number Title Start Funding scheme
125130 The Caribbean Seaway - Mesozoic-Ealy Tertiary evolution of terranes in Central Amecrica and the Caribbean 01.04.2009 Project funding (Div. I-III)
143894 The Caribbean Seaway - Mesozoic ocean circulation, radiolarite distribution and the marine silica cycle 01.10.2012 Project funding (Div. I-III)
185067 Integrated bio/geo-chronology and paleo-environments of Paleogene short-lived carbonate shoals (SLSC) on active margins of the Caribbean Plate - relations with tectonic and volcanic processes 01.09.2019 Project funding (Div. I-III)

Abstract

This proposal seeks for funding for the continuation for 15 months of one PhD (Maximilien Bôle) and a new Postdoc for 2 years, as well as expenses for field and laboratory work. The proposal has two parts which are closely related: Subproject A. Mesozoic ocean circulation across the Pangea-breakup, radiolarite distribution, accumulation rates and the marine silica cycle : Geochemistry of radiolarites: Trace elements , Si- and O-stable isotopes in biosiliecous chert, in continuation of project 200020-143894. The aim of subproject A is to establish clear links between radiolarite distribution and changes in Mesozoic ocean circulation, palaeo-climate, and changes in the marine silica cycle. This part (PhD Maximilian Bôle) includes the following objectives: A1 Obtain precise accumulation rates of biogenic silica in typical Mesozoic-Early Tertiary palaeooceanographic settings of Tethys and Panthalassa and determining the origin of detrital material. A2 Control the relation between d30Si and palaeo-productivity in radiolarites using geochemical productivity proxies and control the impact of diagenesis on d30Si using d18O to finally reconstruct past marine silica cycle. A3 Control, if in addition to diagenesis, seawater temperature is effectively preserved in d18O of radiolarites and evaluate the role of climate on past silicon supply to oceans. A4 Evaluate the impact of the Pangea break-up on Mesozoic circulation and the marine silica cycle. The biosiliceous record and its variation in areal extension has not been integrated in Mesozoic climate reconstructions. In correlating the global Mesozoic biosiliceous record with refined global ocean current and climate models we hope to be able to quantify the Mesozoic marine silica cycle.Subproject B: Mesozoic Radiolarian biochronology and palaeo-biogeography. We propose to create a new, Late Cretaceous radiolarian biochronolgy based on Unitary Associations, a concept that has proven to be specially adapted to both temporally and spatially incomplete radiolarian fossil record. At present, we work with a database consisting of >12.000, mostly unpublished, SEM images from some hundred samples from low latitude DSDP/ODP Sites and land sections, covering the Late Cretaceous. Since occurrence and preservation is generally spotty at each site, few sections cover the entire time interval. Nevertheless, we can construct composite sections based on superpositional control provided by other fossil groups. We will also integrate published, stratigraphically and taxonomically reliable datasets. At first sight, the overall species diversity seems to be lower than for a similar Jurassic time interval, but many of the so far broadly described, long ranging species reveal significant morphologic variation through time. This variation has to be formally described and exploited for biochronology, if one wants to achieve a zonation with a better time resolution than the existing ones. As we did for the Jurassic-Early Cretaceous (Baumgartner et al., 1995), we want to use common, widely distributed morphotypes that can be recognised even in moderately preserved samples. This will allow a wide applicability of the zonation including samples from orogenic belts. Subprohect B includes the following objectives: B1. Obtain topotypic and stratigraphically calibrated material from DSDP-ODP and land sites/sections, where Late Cretaceous radiolarian taxa were described (Largely completed during earlier work). B2. Compare SEM and transmitted light illustrations of topotypic material with original descriptions. B3. Use morphometrics to try to separate closely related forms in well-preserved material. B4. Construct evolutionary lineages for selected taxa. B6. Define a new global Late Cretaceous radiolarian biozonation for low latitudes. The Creaton of a globally applicable, Late Cretaceous radiolatian biochronology in essential for a better understanding palaeogeography, orogenic and accretionary processes in many mountain chains of the world. In particular, precise dating of Late Cretaceous radiolarian occurrences in Central and northern South America and the Caribbean will substantially increase the understanding of the complex interleave of plume-related oceanic plateau formation and subduction-related arc and back-arc development that occurred during the Cretaceous between the Americas.
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