Bereichsbild
Contact

Heidelberg University
Institute of Earth Sciences
Im Neuenheimer Feld 236
69120 Heidelberg
Phone: +49 6221 54-8291
Fax: +49 6221 54-5503

 

Palynology & Paleoenvironmental Dynamics

 

Lisa M. Egger, M.Sc.

 

Lisa Profil

Address:

                

 

 

Institute of Earth Sciences

Ruprecht-Karls-Universität Heidelberg

Im Neuenheimer Feld 234

D-69120 Heidelberg

Room:

218

Phone:

Fax:

+49 (0)6221-54 5988

+49 (0)6221-54 5503

E-mail:

lisa.egger@geow.uni-heidelberg.de

 

 

 

 

 

 

 

 

 

 

 

 


 

Research Profile:

Paleoceanography and paleoclimatology of the Oligocene / marine micropaleontology, palynology:

Despite being characterized by highly dynamic paleoclimatic and paleoceanographic processes, the Oligocene epoch (33,9-23,03 Ma) represents in many ways a somewhat neglected chapter in Cenozoic climate evolution. This situation is at least partially due to the stratigraphic incompleteness of many Oligocene successions. The relative paucity of Oligocene strata, as often encountered in deep-marine sedimentary archives, likely results from the onset of strong bottom-water circulation near the Eocene/Oligocene boundary, while coeval shallow-water sequences often exhibit unconformities caused by glacially induced eustatic sea-level fluctuations.

With regard to the notorious incompleteness of Oligocene sedimentary archives, the sedimentary sequence recovered during IODP Expedition 342 off Newfoundland represent a rare exception to the rule.  Being apparently complete, it exhibits a unique window into the entire Oligocene. This sequence is the basis of my PhD thesis.

As a first step, it will serve as the basis for establishing a chronostratigraphically calibrated dinocyst biostratigraphy for the higher-latitude North Atlantic using the available precise chronostratigraphical framework for this sequence.

In a second step, critical intervals of the Oligocene (i.e., Eocene/Oligocen transition, Oi-2b glaciation, Oligocene/Miocene transition) will be studied in relatively high resolution (~15 ka) for their dinoflagellate cysts, which will be used to decipher surface-water characteristics. This will lead to a better understanding of ocean circulation patterns during the Oligocene and the Oligocene climate system as a whole.

 

Event stratigraphy and biotic crises during the Silurian:

The Silurian extinction events (such as the “Ireviken Event”, Llandovery/Wenlock boundary), which are connected with some of the largest carbon isotope shifts known in Earth history, have caused a controversial discussion on the triggering mechanisms of biotic crises during the Paleozoic. One of these potential mechanisms, i.e., changes in ocean chemistry, can be investigated by using major and trace element geochemistry (XRF-analysis). This approach was the basis for my MSc thesis, which I carried out on the expression of the Ireviken Event in the Lickershamn section on Gotland, Sweden.

 

Short CV:

 

since 06/2014

PhD student within the Paleoenvironmental Dynamics Group at the Institute of Earth Sciences, Heidelberg University

Working title of PhD thesis: “Deciphering the surface-water characteristics of the higher-latitude Atlantic Ocean during the Oligocene, based on core material recently recovered during Integrated Ocean Drilling Program (IODP) Expedition 342 off Newfoundland”. Supervisors: Prof. Jörg Pross and Prof. Oliver Friedrich

2011 - 2014

MSc studies in Geosciences at the Geozentrum Nordbayern, Friedrich-Alexander-Universität Erlangen-Nürnberg (main subject: Paleoenvironment, secondary subject: Petrology, Geodynamics and Georesources)

Title of MSc thesis: “The Silurian Ireviken Event on Gotland (Sweden): Development of major and trace elements in the Lickershamn Section”. Supervisor: PD Dr. Axel Munnecke

2010 - 2014

Student research assistant at the Geozentrum Nordbayern within the working groups “Endogene Dynamics, Magmatic Geochemistry” and “Structural Geology”, and within the section “Paleontology”

2008 - 2011

BSc studies in Geosciences at the Geozentrum Nordbayern, Friedrich-Alexander-Universität Erlangen-Nürnberg

Title of BSc thesis: “Ultrafazies im Plattenkalk: REM-Untersuchungen im unteren Teil des Steinbruchs Ettling (Oberer Jura)“ (“Ultrafacies of platy limestones: SEM-investigations on the lower part of the Upper Jurassic Ettling quarry”)


 

Publications:

(as of 9/2017, * denotes ISI journals)

 

2017:

[5]* Bijl, P.K., Brinkhuis, H., Egger, L.M., Eldrett, J.S., Frieling, J., Grothe, A., Houben, A.J.P., Pross, J., Śli­wiń­ska, K.K., Sluijs, A., 2017. Comment on ‘Wetzeliella and its allies – the ‘hole’ story: a taxonomic revision of the Paleogene dinoflagellate subfamily Wetzelielloideae’ by Williams et al. (2015). Palynology 41, 423-429.

 

2016:

[4] Bahr, A., Spadano Albuquerque, A.L., Ardenghi, N., Batenburg, S.J., Bayer, M., Catunda, M.C., Conforti, A., Dias, B., Díaz Ramos, R., Egger, L.M., Evers, F., Fischer, T., Hatsukano, K., Hennrich, B., Hoffmann, J., Jivcov, S., Kusch, S., Munz, P., Niedermeyer, E., Osborne, A., Raddatz, J., Raeke, A.W., Reissig, S., Sebastian, U., Taniguchi, N., Martins Venancio, I., Voigt, S., Wachholz, A., 2016. South American Hydrological Balance and Paleoceanography during the Late Pleistocene and Holocene (SAMBA) - Cruise No. M125 - March 21 - April 15, 2016 - Rio de Janeiro (Brazil) - Fortaleza (Brazil). METEOR-Berichte, M125, 1-47.

[3]* Egger, L.M., Śliwińska, K.K., van Peer, T.E., Liebrand, D., Lippert, P.C., Friedrich, O., Wilson, P.A., Norris, R.D., Pross, J., 2016. Magnetostratigraphically-calibrated dinoflagellate cyst bioevents for the uppermost Eocene to lowermost Miocene of the western North Atlantic (IODP Expedition 342, Paleogene Newfoundland sediment drifts). Review of Palaeobotany and Palynology 234, 159-185.

[2]* Amberg, C.E.A., Collart, T., Salenbien, W., Egger, L.M., Munnecke, A., Nielsen, A.T., Monnet, C., Hammer, Ø., Vandenbroucke, T.R.A., 2016. The nature of Ordovician limestone-marl alternations in the Oslo-Asker District (Norway): witnesses of primary glacio-eustasy or diagenetic rhythms? Scientific Reports 6, 1-13.

 

2011:

[1] Egger, L.M., Fellner, A.F., 2011. Ultrafazies der Plattenkalke im Steinbruch Ettling. Archaeopteryx 29, 24-30.

Editor: Email
Latest Revision: 2017-09-01
zum Seitenanfang/up