Vortragsreihe Ökologie und Umweltforschung SS 2019

Donnerstag 12:00-13:30 H6, Geo

Falls Sie gerne per E-Mail benachrichtigt werden, können Sie sich an unserer Mailingliste anmelden.


Prof. Dávid Karátson
Department of Physical Geography, Eötvös Loránd University, Budapest (Homepage)
Montag, , 22.07.2019 18:00-19:30 :

Reconstructing the Late Bronze Age island of Santorini, Greece -- photo-statistics, lithological discrimination, and unspiked K-Ar dating

The volcanic island of Santorini (Thera), Greece, has been the focus of international research efforts for centuries. The island is famous not only for its unique volcanic landscapes but also for remnants of the Minoan civilization well preserved below volcanic deposits.

In the Late Bronze Age, the internal part of the island was already occupied by a caldera bay formed during the Cape Riva eruption 22 ka ago. Within the caldera bay there was a central island to be called ‘Pre-Kameni’ after the current Kameni Islands. 3600 years ago Pre-Kameni – along with other parts of Santorini – was destroyed during the VEI=7 explosive ‘Minoan’ eruption. The fragments of Pre-Kameni can be recovered from the Minoan tuffs.

In this talk I will focus on the reconstruction of the island prior to the ‘Minoan’ eruption. Applying a photo-statistical, granulometrical and geochemical analysis and high-precision radiometric dating, it was found that Pre-Kameni had a 2.2-2.5 km3 volume, and its characteristic, black glassy andesite, using Cassignol-Gillot K-Ar dating, yielded an age of ca. 20 ka. Such an age implies that the island had started to grow subsequent to the Cape Riva eruption, which makes it possible to calculate a long-term eruptive rate of 0.13-0.14 km3/kiloyears for Pre-Kameni. However, the island probably was already dormant when the Minoan civilisation spread over Santorini in the Late Bronze Age.

***

Invited by the Geomorphology Group



Weitere Informationen:Export as iCal: Export iCal
zurück zur Liste
Aktuelle Termine


BayCEER-Kolloquium:
Do. 12.12.2019
Iron, sulfur and a pinch of antimony - new perspectives on secondary mineral pathways and metalloid mobility
Geographisches Kolloquium:
Di. 10.12.2019
Intensify or diversify? How agriculture affects biodiversity and ecosystem processes in European farmland
Di. 17.12.2019
The meat of the Anthropocene: Food, capital and the globalisation of industrialised animal killing
Ökologisch-Botanischer Garten:
So. 05.01.2020
Auf ins Neue! Winterspaziergang im ÖBG
So. 05.01.2020
Konzert: Musikalischer Jahresbeginn mit den Rockin`Dinos
BayCEER Blog
24.05.2019
Stoichiometric controls of C and N cycling
07.05.2019
Flying halfway across the globe to dig in the dirt – a research stay in Bloomington, USA
07.05.2019
EGU – interesting research and free coffee
16.04.2019
Picky carnivorous plants?
RSS Blog als RSS Feed
Wetter Versuchsflächen
Luftdruck (356m): 972.9 hPa
Lufttemperatur: 5.8 °C
Niederschlag: 9.8 mm/24h
Sonnenschein: 5 h/d
Wind (Höhe 17m): 8.4 km/h
Wind (Max.): 16.2 km/h
Windrichtung: SW

...mehr
Globalstrahlung: 0 W/m²
Lufttemperatur: 3.1 °C
Niederschlag: 8.0 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 32m): 15.7 km/h

...mehr
Diese Webseite verwendet Cookies. weitere Informationen