Caractérisation sédimentaire de la formation roche mère carbonatée Parnac du Kimméridgien supérieur du Bassin d'Aquitaine (Quercy)

L Bastianini; Bruno Caline; Guilhem Hoareau; Cédric Bonnel; Mathieu Martinez; Carine Lézin; François Baudin; Alexander  Brasier; Laurent Guy

doi:10.1051/bsgf/2017197

Caractérisation sédimentaire de la formation roche mère carbonatée Parnac du Kimméridgien supérieur du Bassin d'Aquitaine (Quercy)

Translated title of the contribution: Sedimentary characterization of the carbonate source rock of Upper Kimmeridgian Parnac Formation of the Aquitaine Basin (Quercy area)

L Bastianini, Bruno Caline, Guilhem Hoareau, Cédric Bonnel, Mathieu Martinez, Carine Lézin, François Baudin, Alexander Brasier, Laurent Guy

Geology and Geophysics

Research output: Contribution to journal › Article › peer-review

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Abstract

The main source rock (SR) of the Aquitaine Basin, the most important oil province in France, corresponds to organic-rich marine limestones of Upper Kimmeridgian age (Lons Formation in the Béarn area and Parnac Formation in the Quercy area). In order to better characterize their depositional environment, in particular the conditions of accumulation and preservation of organic-matter, a sedimentological, micropaleontological and geochemical study of the Crayssac section (Quercy) has been performed. Organic-rich sediments are argillaceous limestones (65 to 99% CaCO3) organized in repetitive beds of up to 1-m thickness. Their total organic matter content reaches up to 15 wt.%, and in this SR kerogen is type of II and immature. Microfauna content, the lack of barrier facies and the control of the wave action base over the depositional environments reflect deposition in an open marine type homoclinal ramp. Strong similarities with Kimmeridgian organic-rich limestones of the Middle East (Hanifa Formation) suggest that the Parnac Formation could act as an analogue of this prolific SR.

Translated title of the contribution	Sedimentary characterization of the carbonate source rock of Upper Kimmeridgian Parnac Formation of the Aquitaine Basin (Quercy area)
Original language	French
Article number	32
Pages (from-to)	1-16
Number of pages	16
Journal	Bulletin de la Socie´te´ Ge´ologique de France
Volume	188
Issue number	5
Early online date	15 Nov 2017
DOIs	https://doi.org/10.1051/bsgf/2017197
Publication status	Published - 2017

Keywords

Aquitaine Basin
source rock
upper Kimmeridgian
Parnac Formation
carbonates
organic matter
Bassin d’Aquitaine
roche mère
Kimméridgien supérieur
Formation de Parnac
matière organique

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1051/bsgf/2017197Licence: CC BY

Sedimentary characterization of the carbonate source rock of Upper Kimmeridgian Parnac Formation of the Aquitaine Basin
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Final published version, 10.7 MBLicence: CC BY

Cite this

@article{9d89538b7dbb4cdb9ec49ae9875bac8e,

title = "Caract{\'e}risation s{\'e}dimentaire de la formation roche m{\`e}re carbonat{\'e}e Parnac du Kimm{\'e}ridgien sup{\'e}rieur du Bassin d'Aquitaine (Quercy)",

abstract = "The main source rock (SR) of the Aquitaine Basin, the most important oil province in France, corresponds to organic-rich marine limestones of Upper Kimmeridgian age (Lons Formation in the B{\'e}arn area and Parnac Formation in the Quercy area). In order to better characterize their depositional environment, in particular the conditions of accumulation and preservation of organic-matter, a sedimentological, micropaleontological and geochemical study of the Crayssac section (Quercy) has been performed. Organic-rich sediments are argillaceous limestones (65 to 99% CaCO3) organized in repetitive beds of up to 1-m thickness. Their total organic matter content reaches up to 15 wt.%, and in this SR kerogen is type of II and immature. Microfauna content, the lack of barrier facies and the control of the wave action base over the depositional environments reflect deposition in an open marine type homoclinal ramp. Strong similarities with Kimmeridgian organic-rich limestones of the Middle East (Hanifa Formation) suggest that the Parnac Formation could act as an analogue of this prolific SR.",

keywords = "Aquitaine Basin, source rock, upper Kimmeridgian, Parnac Formation, carbonates, organic matter, Bassin d{\textquoteright}Aquitaine, roche m{\`e}re, Kimm{\'e}ridgien sup{\'e}rieur, Formation de Parnac, mati{\`e}re organique",

author = "L Bastianini and Bruno Caline and Guilhem Hoareau and C{\'e}dric Bonnel and Mathieu Martinez and Carine L{\'e}zin and Fran{\c c}ois Baudin and Alexander Brasier and Laurent Guy",

note = "The authors would like to thank Bertrand Fasentieux for the production of thin sections. We would like to express our gratitude to Dr. Alexander Brasier for his contribution to this manuscript. Olivier Ridet and Maryline Castello are acknowledged for their participation to field campaigns. We also thank Frank Haeseler, Claire Fialips and Pierre Hantzpergue for fruitful discussions. This manuscript greatly benefited from the remarks of two anonymous reviewers. ",

year = "2017",

doi = "10.1051/bsgf/2017197",

language = "French",

volume = "188",

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publisher = "Societe Geologique de France",

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TY - JOUR

T1 - Caractérisation sédimentaire de la formation roche mère carbonatée Parnac du Kimméridgien supérieur du Bassin d'Aquitaine (Quercy)

AU - Bastianini, L

AU - Caline, Bruno

AU - Hoareau, Guilhem

AU - Bonnel, Cédric

AU - Martinez, Mathieu

AU - Lézin, Carine

AU - Baudin, François

AU - Brasier, Alexander

AU - Guy, Laurent

N1 - The authors would like to thank Bertrand Fasentieux for the production of thin sections. We would like to express our gratitude to Dr. Alexander Brasier for his contribution to this manuscript. Olivier Ridet and Maryline Castello are acknowledged for their participation to field campaigns. We also thank Frank Haeseler, Claire Fialips and Pierre Hantzpergue for fruitful discussions. This manuscript greatly benefited from the remarks of two anonymous reviewers.

PY - 2017

Y1 - 2017

N2 - The main source rock (SR) of the Aquitaine Basin, the most important oil province in France, corresponds to organic-rich marine limestones of Upper Kimmeridgian age (Lons Formation in the Béarn area and Parnac Formation in the Quercy area). In order to better characterize their depositional environment, in particular the conditions of accumulation and preservation of organic-matter, a sedimentological, micropaleontological and geochemical study of the Crayssac section (Quercy) has been performed. Organic-rich sediments are argillaceous limestones (65 to 99% CaCO3) organized in repetitive beds of up to 1-m thickness. Their total organic matter content reaches up to 15 wt.%, and in this SR kerogen is type of II and immature. Microfauna content, the lack of barrier facies and the control of the wave action base over the depositional environments reflect deposition in an open marine type homoclinal ramp. Strong similarities with Kimmeridgian organic-rich limestones of the Middle East (Hanifa Formation) suggest that the Parnac Formation could act as an analogue of this prolific SR.

AB - The main source rock (SR) of the Aquitaine Basin, the most important oil province in France, corresponds to organic-rich marine limestones of Upper Kimmeridgian age (Lons Formation in the Béarn area and Parnac Formation in the Quercy area). In order to better characterize their depositional environment, in particular the conditions of accumulation and preservation of organic-matter, a sedimentological, micropaleontological and geochemical study of the Crayssac section (Quercy) has been performed. Organic-rich sediments are argillaceous limestones (65 to 99% CaCO3) organized in repetitive beds of up to 1-m thickness. Their total organic matter content reaches up to 15 wt.%, and in this SR kerogen is type of II and immature. Microfauna content, the lack of barrier facies and the control of the wave action base over the depositional environments reflect deposition in an open marine type homoclinal ramp. Strong similarities with Kimmeridgian organic-rich limestones of the Middle East (Hanifa Formation) suggest that the Parnac Formation could act as an analogue of this prolific SR.

KW - Aquitaine Basin

KW - source rock

KW - upper Kimmeridgian

KW - Parnac Formation

KW - carbonates

KW - organic matter

KW - Bassin d’Aquitaine

KW - roche mère

KW - Kimméridgien supérieur

KW - Formation de Parnac

KW - matière organique

U2 - 10.1051/bsgf/2017197

DO - 10.1051/bsgf/2017197

M3 - Article

VL - 188

SP - 1

EP - 16

JO - Bulletin de la Socie´te´ Ge´ologique de France

JF - Bulletin de la Socie´te´ Ge´ologique de France

SN - 0037-9409

IS - 5

M1 - 32

ER -

Caractérisation sédimentaire de la formation roche mère carbonatée Parnac du Kimméridgien supérieur du Bassin d'Aquitaine (Quercy)

Abstract

Keywords

UN SDGs

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