Dating the volcanic eruption at thera

Dating the volcanic eruption at thera

The northern part of the caldera was refilled by the volcanic ash and lava, then collapsed again. During the eruption, the landscape was covered by the pumice sediments. Although the fracturing process is not yet known, the altitudinal statistical analysis indicates that the caldera had formed just before the eruption.

The Thera volcanic events and subsequent ashfall probably sterilized the island, i. The radioactive carbon within an annual tree ring decays at a steady rate and can act as a clock indicating when the tree grew that ring. The area of the island was smaller, and the southern and eastern coastlines appeared regressed. Charlotte Pearson analyzed annual tree rings from bristlecone pines and Irish oak to more accurately estimate the date of the Thera eruption. In others, recent coastlines were extended towards the sea.

That argument has

The third phase was also characterized by the initiation of caldera collapse. There's a kind of revolution in the radiocarbon community to revise the calibration curve using these more precise measurements.

The caldera would slowly refill with magma, building a new volcano, which erupted and then collapsed in an ongoing cyclical process. This phase was characterized by the completion of caldera collapse, which produced megatsunamis. Despite the evidence, the exact date of the eruption has been difficult to determine.

That argument has been made, in particular, by Malcolm H. That demonstrates Mycenaean military influence not many years after the eruption. The effects of the eruption were felt as far away as Egypt and what is now Istanbul in Turkey. The radioactive carbon within an annual tree ring starts decays at a steady rate and can act as a clock indicating when the tree grew that ring.

That demonstrates Mycenaean