Itanhaém Formation

Short description: Geological formation of the Santos Basin near Brazil

Itanhaém Formation
Stratigraphic range: Early Albian
~113–108 Ma

PreЄ

Type| Geological formation
Unit of| Camburi Group
Underlies| Itajaí-Açu Fm., Juréia Fm.
Overlies| Ariri Formation
Thickness| up to 1,500 m (4,900 ft)
Lithology
Primary| Shale, siltstone, marl
Other| Sandstone
Location
Coordinates|  [ ⚑ ] : 26°6′S 43°43′W﻿ / ﻿26.1°S 43.717°W﻿ / -26.1; -43.717
Region| Santos Basin, South Atlantic
Country|  Brazil
Type section
Named for| Itanhaém

Location of the Santos Basin

The Itanhaém Formation (Portuguese: Formacão Itanhaém) is a geological formation of the Santos Basin offshore of the Brazil ian states of Rio de Janeiro, São Paulo, Paraná and Santa Catarina. The predominantly shale formation with marls, siltstones and sandstones dates to the Early Cretaceous period; Early Albian epoch and has a maximum thickness of 1,500 metres (4,900 ft). The formation is the reservoir rock of the Tambaú Field in the Santos Basin.

## Contents

* 1 Etymology
* 2 Description
* 3 See also
* 4 References
* 4.1 Bibliography

## Etymology

The formation is named after the town of Itanhaém, São Paulo.

## Description

The Itanhaém Formation is 517 to 1,500 metres (1,696 to 4,921 ft) thick,[1] and consists of dark grey shales, siltstones and light grey marls, ochre-brown calcisilts and subordinated sandstones. These facies change laterally into the coarse clastics of the Florianópolis Formation. Facies analysis indicates a marine environment ranging from sub-littoral (inner neritic) and more rarely to pelagic (outer bathyal) conditions. The age based on planktonic foraminifera and pollen is Early Albian.[2]

The formation is the reservoir rock of the Tambaú Field in the Santos Basin.[3]

## See also

* Campos Basin

## References

1. ↑ Kiang Chang et al., 2008, p.32
2. ↑ Clemente, 2013, p.22
3. ↑ Vieira, 2007, p.9

### Bibliography

* Clemente, Pilar. 2013. Petroleum geology of the Campos and Santos basins, Lower Cretaceous Brazilian sector of the South Atlantic margin, 1–33. Danmarks Tekniske Universitet. Accessed 2017-09-04.
* Kiang Chang, Hung; Mario Luis Assine; Fernando Santos Corrêa; Julio Setsuo Tinen; Alexandre Campane Vidal, and Luzia Koike. 2008. Sistemas petrolíferos e modelos de acumulação de hidrocarbonetos na Bacia de Santos. Revista Brasileira de Geociências 38\. 29–46. Accessed 2017-09-04.
* Vieira, Juliana. 2007. Brazil Round 9 - Santos Basin, 1–73. ANP. Accessed 2017-09-04.

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/Itanhaém Formation. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Earth:Itanhaém_Formation&oldid=1023127"