Tortonian


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Tortonian

[tȯr′tō·nē·ən]
(geology)
A European stage of geologic time: Miocene (above Helvetian, below Sarmatian).
References in periodicals archive ?
The Middle Miocene of Helvetian and Tortonian stages can be traced in the Gobustan and Pre-Caspian Guba and in the inter-fluve of the Kura and Iori, where the Tortonian is spread to the Absheron region.
In contrast, coralline red algae communities become dominant, as most phototrophic carbonate producers thrive in shallow marine environments [49], especially through Early Miocene to Tortonian [14].
The field is currently on production with cumulative production of 17 billion cubic feet of natural gas from a single platform in the Western portion of the structure producing from the shallow sediments of the Tortonian and middle Maikop formations.
Similar evidences were revealed by drillings: the presence of small karst caves at the contact between the Messinian evaporitic formation (Gessoso Solfifera Formation) and the older Tortonian marls (SanfAgata Fossile Formation).
The Middle-Upper Miocene: The Middle Miocene, of Helvetian and Tortonian stages, can be traced in the Gobustan and Pre-Caspian-Guba regions and in the interfluve of the Kura and Iori rivers, where the Tortonian state is spread and is found in the Apsheron region.
The Middle-Upper Miocene: The Middle Miocene of Helvetian and Tortonian stages can be traced in the Gobustan and Pre-Caspian Guba and in the inter-fluve of the Kura and Iori, where the Tortonian is spread to the Absheron region.
The Middle-Upper Miocene: The Middle Miocene, of Helvetian and Tortonian stages, can be traced in the Gobustan and Pre-Caspian Guba regions and in the inter-fluve of the Kura and Iori rivers, where the Tortonian state is spread and is found in the Absheron region.