Scientists In Antarctica Extracted Rocks 1 Billion Years Old
Date
6/11/2024 7:35:29 PM
(MENAFN- AzerNews)
By Alimat Aliyeva
Scientists of the All-Russian Scientific Research Institute of
Geology and Mineral Resources of the World Ocean named after
Academician I.S. Gramberg have successfully implemented a project
to extract rock samples from under the ice with an age of about 1
billion years, Azernews reports.
"The place chosen for drilling is located in the center of the
magnetic anomaly, at the top of the local uplift of the bedrock
(the solid surface of Antarctica). The source of this anomaly
remains unknown. It is assumed that the anomaly is associated with
the tectonic seam, which is the boundary of the fusion of
Antarctica and India in the Late Proterozoic - at the time when the
supercontinent Rodinia was born on the planet," he said.
To gain access to the subglacial surface of the tectonic seam,
specialists had to overcome an ice sheet with a thickness of more
than 550 m. To this end, 30 km south of the Progress coastal
wintering station at an altitude of about 700 m above sea level,
scientists drilled a well from which they managed to extract a 48
cm long core of rock, as well as a continuous core of Antarctic
ice. The latter will help reconstruct the climate and the state of
the atmosphere in Antarctica for at least the last 10 thousand
years.
The analysis of the rocks obtained should help scientists
understand the origin of the magnetic anomaly, which is caused by
the thickness of rocks magnetized by the ancient and modern
geomagnetic field of the Earth. The width of this space with a
magnetic field different from the rest of the territories around it
is about 4 km.
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