PGS-RGE Limagnes-Vercors field course
IFP School
Created on September 22, 2020
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Transcript
Teachers: E. Deville, C. MagnierVideos: A. Torres
PGS-RGE 2020-21
Limagnes & VercorsField course
Sept. 28 - October 2, 2020
Please, report bugs - if any
Start
Limagnes and Northern Vercors uplandsField course outcrop stops summary
Objectives:This field course is a practical application of the concepts presented in the previous weeks:A focus on the Limagnes extensional features, and a complete section through the western French Alps foreland and thrust belt, with field exposures complemented with seismic and well data.Integration of these data with both geochemical & thermal data via numerical modelling will enable the participants to discuss the basin's potential via the evaluation of the petroleum system's elements.
Wrap up
Introduction
Day #1
Day #2
Day #3
Day #4
Day #5
Introduction to Limagnes & Vercors field course
Google Earth geological map of France
To download the geological map of France: 1. go to Google Earth 2. Download the kml file 3. Upload it into Google Earth "Projects" 4. Tick the file to visualize it as an overlay on the satellite base map
Download "InfoGeol" smartphone app from BRGMInfoTerre
D1
INTRO
D2
D3
D4
D5
WRAPUP
DAY #1 - Outcrop stops 1 & 2
DAY1 - page 1/2
Clermont-Ferrand :Chanteranne
Royat
D1
INTRO
D2
D3
D4
D5
WRAPUP
Day #1 LIMAGNE RIFTStops 1 & 2
Stop#1 - Clermont-Ferrand: Chanteranne
Field course introduction - Landscape viewGeological setting - Seismic section
Limagne border fault - Road cutsFacies analysis
Stop#2 - Royat
DAY1 - page 2/2
D1
INTRO
D2
D3
D4
D5
WRAPUP
DAY #2 - Outcrop stops 3 & 4 - 5 & 6
DAY2 - page 1/3
Grand Gandaillat:quarry
Puy de la poix:oil seeps
Lignat:CO2 seep (geyser)
Puy St André:quarry
D1
INTRO
D2
D3
D4
D5
WRAPUP
Day #2 LIMAGNE RIFTStops 3 & 4
Stop#3 - Puy de la poix: oil seeps
DAY2 - page 2/3
Natural oil and H2S seepageGas analysis
Lacustrine deposits - StromatolitesFacies analysis and fractures measurements
Stop#4 - Grand Gandaillat: carbonate quarry
D1
INTRO
D2
D3
D4
D5
WRAPUP
Day #2 LIMAGNE RIFTStops 5 & 6
Stop#5 - Puy St André: quarry
Stop#6 - Lignat: CO2 spring
DAY2 - page 3/3
Natural CO2 seepage (cold geyser)Gas analysis
Rift-associated volcanics (basalt "organs") Outcrop analysis
D1
INTRO
D2
D3
D4
D5
WRAPUP
DAY #3 - Outcrop stops 1, 2 , 3 & 4
DAY3 - page 1/2
Stop 1
Stop 2
Stop 3
Châteauneuf-sur-Isère
St Nazaire-en-Royans
Crussol
Stop 4
La Sône
______ Black line: seismic profile
D1
INTRO
D2
D3
D4
D5
WRAPUP
day #3 Vercors thrust beltStops 1, 2 , 3 & 4
Stop#1 - Valence: Crussol high
Stop#2 - Châteauneuf-sur-Isère
Stop#3 - Saint-Nazaire-en-Royans
Landscape view and outcropsStratigraphic sequence from tilted block
Anticline (Pliocene) and grabens (Eocene)
DAY3 - page 2/2
DAY #3 program moved to DAY #4due to weather conditions
Stop#4 - La Sône
Carbonate hot spring
D1
INTRO
D2
D3
D4
D5
WRAPUP
*
DAY #4 - Outcrop stops 5, 6 & 7
DAY4 - page 1/2
Pont-en-Royans: river
La Balme de Rencurel+ La Goule Blanche:thrust belt
Stop 8
Stop 9
VERCORS
Pont-en-Royans: belvedere, valley
D1
INTRO
D2
D3
D4
D5
WRAPUP
day #4vercors thrust beltStops 5, 6 & 7
7a: La Balme de RencurelThrust structures in Cretaceous
DAY4 - page 2/2
DAY #3 program moved to DAY #4due to weather conditions
7b: La Goule BlancheThrust structures in Cretaceous
Thrust front (Cretaceous)
Tidal shoreface sandstone
Stops#7 a&b - Thrust belt
Stop#6 - Pont-en-Royan (belvedere)
Stop#5 - Pont-en-Royan (river)
D1
INTRO
Ripples on a megaripple
D2
D3
D4
D5
WRAPUP
DAY #5 - Outcrop stops 8 & 9
DAY5 - page 1/2
Veurey-Voroize:Chartreuse range landscape view
Le Gua: "la fontaine ardente" gas seep
Stop 5
Stop 6
VERCORS
Stop 7
Stop 10
St-Georges-de-Commiers:Landscape viewand wrap up [CANCELLED]
D1
INTRO
D2
D3
D4
D5
WRAPUP
day #5Vercors trust beltStops 8 & 9
Stop#10 - St-Georges-de-Commiers
Stop#9 - Le Gua
DAY5 - page 2/2
"La fontaine ardente" gas seep
Landscape view of the Chartreuse massifStructural analysis and seismic section interpretation
Stop#8 - Veurey-Voroize (Grenoble)
Landscape viewCANCELLED DUE TO BAD WEATHER
D1
INTRO
D2
D3
D4
D5
WRAPUP
Rain...
field course wrap up
No wrap up in the field due to bad weather...Refer to field guide and videos
Report:Discuss tectonic structures potential of both the Limagnes rift system and the compressive Alpine front in the Vercors massif area in terms of:- Residual exploration of HC (oil or gas)- Possible gas storage (HC gas, H2 or CO2) - Medium-to-high temperature geothermal energyDiscussion shall be focused on technical aspects.Limitations related to economics, politics or legal aspects should not be considered.
Structural evolution - Extension / Rift / Inversion
Structural evolution - Compression / Alps
D1
INTRO
D2
D3
D4
D5
WRAPUP