Respuesta :
The correct answer is - Tethys Ocean.
The Tethys Ocean was an ocean that was situated between the European and African continents, through what is now the Middle East and parts of Central Asia, and the northern half of the Indian Ocean. Because of the geologic activities, mainly the movement of the Indian plate towards Asia, and the Alpine orogenesis, the ocean was becoming smaller and smaller, and it started to be divided into smaller pieces, until it totally disappeared. One of the remains of this ocean is the largest lake in the world, the Caspian Lake, often referred to as Caspian Sea, and it can easily be seen that this body of water was once part of a much bigger body of water with saline water, because it itself has saline waters.
The first ocean with which the Caspian Sea lost connection, beginning from the process of turning a gulf into an isolated body of water is Tethys Ocean.
Further Explanation:
Tethys Ocean:
It is referred to as Tethys Sea or Neotethys. In the Mesozoic era, it is located between the continents of Laurasia and Gondwana. The ocean is divided into two parts those are eastern part (known as Eastern Tethys) and western part (known as Paratethys or Western Tethys). The Aral, Black, and Caspian Sea are the crustal remnants of the western Tethys Ocean. Caspian Sea get separated from the Tethys Ocean or became landlocked due to the fall in sea level and uplift in tectonic plates.
Therefore, the first ocean with which the Caspian Sea lost connection, beginning from the process of turning a gulf into an isolated body of water is Tethys Ocean.
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Answer details:
Grade: Middle School
Subject: Geography
Chapter: Biosphere
Keywords: What was the first ocean the Caspian Sea lost connection with, beginning the process of turning what was once a gulf into an isolated body of water, Tethys Ocean
