Publikationsdatum:
2024-03-26
Beschreibung:
The Cretaceous with extremely high atmospheric pCO2 is one of the warmest periods in the Phanerozoic, providing an endmember to test climate models. Repeated periods of widespread dysoxic / anoxic conditions (Oceanic Anoxic Events; OAEs) were characterized by enhanced burial of organic matter and different degrees of marine faunal turnovers, that can be seen as extreme equivalents for the already observed trend of expanding Oxygen Minimum Zones (OMZ) in modern oceans caused by anthropogenic climate warming. One of the largest OAEs occurring at the Cenomanian / Turonian boundary is OAE2. This thesis presents results from Core SN°4 drilled in the Tarfaya Basin (SW Morocco). This continuous record spanning the time from the late Albian to early Turonian allowed 1) to reconstruct climatic and paleoceanographic variability during this period in the Tarfaya Basin, 2) to unravel climate processes and biospheric changes during the onset of OAE2 and 3) to study phosphorus dynamics during the Cenomanian and early Turonian.
Materialart:
Thesis
,
NonPeerReviewed
Format:
text
