Discussion on the Cretaceous-Tertiary biotic transition

Article Abstract:

A catastrophe at the end of the Cretaceous period caused the collapse of at least a continent-wide terrestrial flora and of an ocean-wide nanoplankton biota. Evidence for a catastrophe affecting a large region is provided by the vegetational changes observed in North America. The impact of this end-Cretaceous catastrophe undoubtedly caused the extinction of several other species in the Late Cretaceous. These provide a link between the end-Cretaceous catastrophe and the end-Cretaceous extinctions, changing the course of the history of life.

Analysis, Causes of, Extinction (Biology), Catastrophes (Geology), Catastrophism

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Discussion on application of palynological data on the chronology of the Palaeogene lava fields of the British Province

Article Abstract:

A study on Palaeogene lava fields is evaluated. The study showed that the Mull Tertiary lave succession and the upper Antrim leaves are younger than the Skye Main Lava Series by proposing a similarity between the Staffa magma sub-type at the base of the Mull lava pile and two Preshal More-type flows on the Skye. However, it is argued that this proposal is incorrect and that the palynological ages used in the study are inaccurate by 2-4 Ma.

Research, Geology, Stratigraphic, Stratigraphy, Lava, Paleogene period

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