Irati Formation

He made many contributions to the geological knowledge of the Irati formation, including the dolomitization process of carbonate rocks.

The size, location and quality of oil shale deposits in the Paraiba Valley and the Irati Formation have attracted the most attention.

Irati Formation (Passo São Borja).

Petrobras started oil shale processing activities in 1953 by developing Petrosix technology for extracting oil from oil shale of the Irati formation.

Finally, during the Late Permian the Irati Formation was laid down, represented by bituminous shale, a potential petroleum source rock, and famous worldwide for its Mesosaurus fauna.

His habilitation thesis (Livre-docência) was on "Geology and Petrology of the Irati Formation (Permian) in São Paulo State."

It is known from a skeleton recovered from the Assistencia Member of the Irati Formation (Hanayama Farm, Tatuí, São Paulo).

Outside North America, marinite occurs in the Irati Formation in Brazil, deposits in the Middle East and North Africa, and in Sweden.

While the "Irati formation" deposit is the smaller of the two, containing an estimated 600 million barrels in-situ compared to 840 million in the Paraiba valley formation, the former is more economically viable.

Exposures of the Irati Formation are to be found in the South (Geopark of Paleorrota), southeastern Brazil and in the states of Goias and Mato Grosso do Sul.

One of the main results of these studies, besides the reconnaissance for coal, was the discovery of Mesosaurus fossils within Permian black shales (Irati Formation), and the Glossopteris flora within the Permian coals.

The region has many formations such as Santa Maria Formation, Caturrita Formation, Sanga do Cabral Formation, Rio do Rastro Formation, Irati Formation and the Rio Bonito Formation.

Oil shale: Since 1972 Petrobras extracts hydrocarbons from the Irati Formation oil shales in São Mateus do Sul, a city in the Brazilian state of Paraná, using the Petrosix process, a Petrobras patent.

The versatility of curious Octávio Barbosa is that, from 1952 to 1958, he published some work on paleobotany, setting the age of Gondwana floras and weaving observations (in 1957) on theParatoxopitys Americana, a fossil wood of Irati Formation.