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 ?
These remains are quite similar to those described by Cope (1896) from Tortonian of Maryland corresponding to the Family Cetotheriidae, genus Cephalotropis and to the specimen in the National Museum of Natural History of Lisbon from the Tortonian of Sesimbra (Portugal, Mocho and Povoas, 2010).
Tortonian flora from the "Gdow Bay" in the South of Poland.
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.
1990): Coral reefs in coarse-terrigeous sedimentary environments (Upper Tortonian, Granada Basin, Southern Spain).
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].
Many of the rocks surrounding La Yeguada and in the greater area are Miocene volcanics, mostly at or near Tortonian (11.
The amount of uplift of this area during the early Tortonian reached 200-350 m, and during the subsequent episods of tectonic mobility in Messinian and Zanclean time it varied from 75 to 300 m.
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).
There, the fault develops in its hanging wall an endorreic related basin, the Zafarraya Depression, filled by sediments that range in age from Tortonian up to the Present.
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.
Predation by muricid and naticid gastropods on the Lower Tortonian molluscks from the Korytnica clays.