Department of Geology and Geoenviromment
Library of the School of Science

2021-11-04

2021

ΠΟΛΥΜΕΡΟΠΟΥΛΟΥ ΑΙΚΑΤΕΡΙΝΗ

Κατερίνα Κούλη, Αναπληρώτρια Καθηγήτρια, Τμήμα Γεωλογίας και Γεωπεριβάλλοντος, Σχολή Θετικών Επιστημών, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών

Η εξέλιξη του βιο-γεωπεριβάλλοντος του περιθωρίου του Κορινθιακού κόλπου κατά τα MIS-7 και MIS-6

Greek
English

The paleoenviromental evolution of the Corinth Gulf during MIS-7 and MIS-6

In the following diploma thesis we present the palynological analysis of sediments from the Corinth Gulf basin. The data were collected by the scientific expedition 381 that was accomplished by the International Ocean Discovery Program (IODP) and was called “Drilling in the Corinth Rift: Resolving the detail of active rift development”. The goals of this thesis is the reconstruction and study of the paleoflora of the margin of the Corinth Gulf as well as the relation of the evolution of the vegetation with the climatic fluctuatuion between glacial and interglacial periods during the marine isotope stages 7 and 6. We studied a range of different depths from the site M0078A with the deepest at 187.82mbsf (metera below sea floor) and the shallowest at 123.765mbsf. The first step towards the making of this thesis was the chemical processing so that we could recognize, count and study the pollen, the dinoflagellate cysts as well as other palynomorphs that we came encountered with during the time in the optical microscope. Afterwards, TILIA 2.4 (Grimm, 1992) software was used in order to calculate the concentration and percentages and construct graphs for our palynomorphs. It became clear that during the closure of MIS-7 the climate was mild and a vegetation with a lot of pines, other conifer and deciduous trees is evidenced. As we proceed at the MIS-6 we observe that the climatic fluctuations are scarce until 160-150m where we can see a decrease in the temperature and increase in the salinity of the water. From 150m depth and above, the pine population decreases while the upland herbs are increasing and we conclude that a glacial period is ahead with dryer climatic conditions and open vegetation.

Science

palynology, pollen, palynomorphs, palaeoclimate, palaeovegetation, palaeoenviroment, glacial, interglacial, MIS-7, MIS-6, Corinth Gulf, climate fluctuations, geology

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https://pergamos.lib.uoa.gr/uoa/dl/object/2964802