
Francesca GalassoHamburg University | UHH · Institut für Geologie
Francesca Galasso
Doctor of Evolutionary Biology
Humboldt fellow @Emmy Noether Group- Studying malformation in sporomorphs as ecological proxies for mass extinctions
About
17
Publications
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Introduction
Through my research, I aim to unravel the intricate connections between environmental changes and terrestrial ecosystem responses. By developing innovative methods, I aim to enhance our understanding of these impacts and contribute to effective mitigation strategies in the face of ongoing climate change.
Education
October 2015 - January 2017
October 2012 - April 2015
Publications
Publications (17)
The Posidonia Shale in the basement of the North Alpine Foreland Basin of southwestern Germany represents an important archive for environmental changes during the Toarcian oceanic anoxic event and the associated carbon isotope excursion (T-CIE). It is also an important hydrocarbon source rock. In the Salem borehole, the Posidonia Shale is~10 m thi...
The Cenomanian/Turonian boundary interval is associated with an oceanic anoxic event (OAE 2, 94.0 Ma) during one of the warmest episodes in the Mesozoic. To date, plant responses to these climatic conditions are known only from the northern mid-latitudinal succession in Cassis, France. There, conifer-dominated and angiosperm-dominated vegetation ty...
The geological record is an invaluable archive for studying climatic, environmental, and biological changes through time. During the last 540 Ma of Earth history, four out of five major biotic crises coincided with large igneous provinces (LIPs), implying that volcanism was a key driver of high faunal turnover and extinction events in the past. The...
The Cenomanian/Turonian boundary interval is associated with an oceanic anoxic event (OAE 2, 94.0 Ma) during one of the warmest episodes in the Mesozoic. To date, plant responses to these climatic conditions are known only from the northernmid-latitudinal succession in Cassis, France. There, conifer-dominated and angiosperm-dominated vegetation typ...
In the last 500 million years, Earth's biota experienced periods of crises with extinctions on a large scale and significant turnover events, one of them being the Permian-Triassic extinction event.
The following Early Triassic was a critical time marked by a series of biological and environmental changes with a complex recovery pattern of marine f...
The environmental perturbations of the Toarcian Oceanic Anoxic Event (T-OAE, ~ 183 Ma) were associated with the widespread deposition of black shales, such as the Posidonia Shale in South Germany. We recently published a detailed palynological analysis of the Posidonia Shale deposit at Dormettingen, investigating both pollen, spores, and marine pla...
The Toarcian Oceanic Anoxic Event (T-OAE; ~ 183 Ma) represents an episode of marine anoxia that lasted for several hundred thousand years. Abiotic factors contributing to the formation of the T-OAE, such as global warming, changes in weathering intensity, or sea-level change, are associated with a marked change in carbon cycling. While these factor...
Extinctions have played an important role in the history of life by sweeping out niches and fostering adaptive radiations. While the fossil animal record shows a decline in taxonomic richness during these events, fossil vegetation records rarely show prolonged diversity reduction. Nevertheless, plant communities react to environmental changes sensi...
The Toarcian oceanic anoxic event (T-OAE) is associated with a prominent negative carbon isotope excursion (CIE; ~ 183 million years (Myr)). About 10-m-thick organic matter-rich sediments accumulated during the T-OAE in the Southwest German Basin (SWGB). Rock–Eval, maceral and biomarker analysis were used to determine variations of environmental co...
This study focuses on the thermal maturity of Permian deposits from the Zagros Basin, Southwest Iran, employing both optical methods (Thermal Alteration Index, Palynomorph Darkness Index, Vitrinite Reflectance, UV Fluorescence) and geochemical analyses of organic matter (Rock Eval Pyrolysis and MicroRaman spectroscopy) applied to the Faraghan Forma...
During the Early Toarcian, deposition of organic carbon-rich-shales occurred throughout the epicontinental sea across Europe. Climate instability and high extinction rates in the marine realm were associated with profound environmental changes. The Toarcian Oceanic Anoxic Event (T-OAE) has been linked to the injection of greenhouse gases (e.g. ocea...
Permian-Triassic ages have been identified for the first time in the Karoo Supergroup of the N’Condédzi sub-basin, Moatize-Minjova Coal Basin, Mozambique. This transition was identified in a coal exploration borehole that penetrated the Matinde and Cádzi formations. The top of the Matinde Formation is dated latest Permian (Lopingian), and the Cádzi...
The detailed palynostratigraphic study of four boreholes in theMuarádzi sub-basin,Moatize-Minjova Coal Basin
(MMCB) southeast of Moatize, allowed the assignment of relative ages to the stratigraphic units. Three assemblageswere
studied in detail and are assigned to the Lopingian. Assemblage L1 is characterized by the rich occurrence
of Guttulapolle...
Kerogen concentrates obtained from Lopingian (Late Permian) to Upper Triassic mudrock lithologies of seven coal exploration boreholes, drilled in the Moatize – Minjova Coal Basin (N'Condédzi sub-basin, Mozambique), were studied by means of vitrinite reflectance (VR), spore fluorescence and spore colour, in order to constrain the thermal history and...
Karoo sedimentary rocks are well represented in Mozambique in various sedimentary basins, located along the Zambezi River valley in Tete Province, Central-West Mozambique. The Moatize-Minjova Basin is one of these basins which sedimentary successions are regarded as the key stratigraphic sections for the Lower Karoo Supergroup in Mozambique, includ...
Palynomorph Darkness Index (PDI) is a new quantitative method to establish the thermal maturity of organic matter. PDI is calculated from measurement of the red, green and blue (RGB) intensities of light transmitted through palynomorphs, using standard palynological microscopes and digital cameras. This is based on the integration of red, green and...