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GEOREF RECORD

Turbidite systems in the Campos Basin Oligo-Miocene and Miocene, Brazil

Luci M. Arienti, Viviane S. S. dos Santos, Helga E. Voelcker, Hilario Mucelini, Rogerio C. Gontijo and Roberto S. F. d'Avila
Turbidite systems in the Campos Basin Oligo-Miocene and Miocene, Brazil (in Papers presented at the 32nd annual GCSSEPM Foundation Bob F. Perkins research conference; New understanding of the petroleum systems of continental margins of the world, Norman C. Rosen (editor), Paul Weimer (editor), Sylvia Maria Coutes dos Anjos (editor), Sverre Henrickson (editor), Edmundo Marques (editor), Mike Mayall (editor), Richard Fillon (editor), Tony D'Agostino (editor), Art Saller (editor), Kurt Campion (editor), Tim Huang (editor), Rick Sarg (editor) and Fred Schroeder (editor))
Papers presented at the Gulf Coast Section, Society of Economic Paleontologists and Mineralogists Foundation Annual Bob F. Perkins Research Conference (2012) 32: 410-428

Abstract

The integration of regional 3D seismic, well logs, cores, and biostratigraphic data gathered in a sequence stratigraphic approach provide a basis for interpreting the Oligo-Miocene and Miocene system as a whole. This stratigraphic interval, which contains the most of oil reserves in Campos basin turbidites, was divided into third and fourth order sequences and mapped across the shelf, slope, and basin. The characteristic depositional geometries recognized in seismic sections are: (1) shelf-edge prograding delta complex; (2) shelf breaching incised valleys; (3) slope erosive bypass zone, which has straight shallow channels and canyons; (4) braided sandy submarine channels filling fault-related depressions and troughs; and (5) asymmetric or elongated sandy turbidite lobes and lobes reworked by bottom currents. Shelf-edge prograding delta complexes are comprised of granules and coarse- to very coarse-grained sands deposited during the late lowstand systems tract. Common turbidite facies are: (A) extra-formational conglomerates with shallow water bioclasts; (B) structureless medium- to fine-grained sandstones containing dispersed granules and coal fragments; (C) intraclastic sandstones; and (D) fine- to very fine- grained laminated sandstones. Heteroliths are present at the very end of the cycles. Catastrophic floods related to strongly prograding fluviodeltaic systems caused hyperpycnal flows during sea-level falls are assumed to be the main process responsible for transferring large amounts of sandy sediments to the basin. The denudation of the Serra do Mar uplift supplied the large volumes of sediment required to fill depositional lows related to inherited basement structures and halokinesis, ultimately controlling the accommodation space.


ISSN: 1544-2462
Serial Title: Papers presented at the Gulf Coast Section, Society of Economic Paleontologists and Mineralogists Foundation Annual Bob F. Perkins Research Conference
Serial Volume: 32
Title: Turbidite systems in the Campos Basin Oligo-Miocene and Miocene, Brazil
Title: Papers presented at the 32nd annual GCSSEPM Foundation Bob F. Perkins research conference; New understanding of the petroleum systems of continental margins of the world
Author(s): Arienti, Luci M.dos Santos, Viviane S. S.Voelcker, Helga E.Mucelini, HilarioGontijo, Rogerio C.d'Avila, Roberto S. F.
Author(s): Rosen, Norman C.editor
Author(s): Weimer, Pauleditor
Author(s): Coutes dos Anjos, Sylvia Mariaeditor
Author(s): Henrickson, Sverreeditor
Author(s): Marques, Edmundoeditor
Author(s): Mayall, Mikeeditor
Author(s): Fillon, Richardeditor
Author(s): D'Agostino, Tonyeditor
Author(s): Saller, Arteditor
Author(s): Campion, Kurteditor
Author(s): Huang, Timeditor
Author(s): Sarg, Rickeditor
Author(s): Schroeder, Frededitor
Affiliation: Petrobras Exploration & Production, Rio de Janeiro, Brazil
Pages: 410-428
Published: 2012
Text Language: English
Publisher: Society of Economic Paleontologists, Gulf Coast Section (GCSSEPM) Foundation, Houston, TX, United States
ISBN: 978-0-9836097-8-0
Meeting name: 32nd annual GCSSEPM Foundation Bob F. Perkins research conference
Meeting location: Houston, TX, USA, United States
Meeting date: 20121202Dec. 2-5, 2012
References: 4
Accession Number: 2017-003528
Categories: Sedimentary petrologyEconomic geology, geology of energy sources
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., block diags., geol. sketch maps
S24°00'00" - S20°00'00", W48°00'00" - W38°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 201704
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