Overblog
Suivre ce blog
Editer l'article Administration Créer mon blog

Earth of fire

Actualité volcanique, Article de fond sur étude de volcan, tectonique, récits et photos de voyage

Publié le par Bernard Duyck
Publié dans : #Excursions et voyages
 The Kula volcanic field - photo © WWU-Ralf Hetzel

The Kula volcanic field - photo © WWU-Ralf Hetzel

During the construction of a dam in 1969 in the Kula volcanic field in western Turkey,  human footprints were found in a thin layer of volcanic ash.

These footprints come to be dated according to a new method (isotope helium-3 and Berylium-10) of about 11,000 years ago by the WWU / Westfälische Wilhems Universität Münster ; the range given by previous dating was too wide, between 250,000 and 25,000 years, to be exploitable.

This study will enable archaeologists to reconstruct the history of settlement in the region. It also shows that the Kula volcanic field has had several volcanic eruptions in the last 4000 years.

 

Footprint preserved in the ashes of the volcanic field Kula - photo © WWU-Ralf Hetzel

Footprint preserved in the ashes of the volcanic field Kula - photo © WWU-Ralf Hetzel

The Kula volcanic field:

Among younger volcanic areas of the eastern Mediterranean, the Kula volcanic field, which covers about 360 square kilometers, consists of various maars, cinder cones and lava flows basanitic to  phonotéphritic is aligned east-west to the southwest of the city of ​​Selendi. Most of the structures date of the Pleistocene, between 1.1 million years to 10,000 years.

 

Kula volcanic field - a cinder cone - Photo Pinterest

Kula volcanic field - a cinder cone - Photo Pinterest

Kula volcanic field - Kara Tepe Divlit cinder cone - Photo by Samuele Agostini, 2000 (CNR, Pisa, Italy) / GVP

Kula volcanic field - Kara Tepe Divlit cinder cone - Photo by Samuele Agostini, 2000 (CNR, Pisa, Italy) / GVP

The volcanism it comes in three periods: the first characterized by lava flows from vents along a circular fracture of a caldera identified from satellite images. ; the second and third are related to volcanism along a graben oriented east-west.

 

Sources :

- GFZ – Postdam - New age dating solves the enigma of the age of a human footprint -link

- Surface exposure dating of Holocene basalt flows and cinder cones in the Kula volcanic field (Western Turkey) using cosmogenic 3He and 10Be - Caroline HeinekeSamuel NiedermannbRalf HetzelCüneyt Akal - link

- Global Volcanism Program – Kula volcanic filed

- Petrology of the Kula Volcanic field – J.M.Dyer / State University of New York

- Kula Geopark - Turkey

Commenter cet article

Articles récents

Hébergé par Overblog