PYREX 2018: Geological field trip to the Spanish Pyrenees

The geological course PYREX is primarily about clastic reservoir geology. The rocks studied are analogous to a number of important reservoir sections offshore Norway and other parts of the world, and the use of analogues will be discussed throughout the course. Within the topic of reservoir geology a number of parallel themes will be addressed.


The main themes are:

1. Fluvial systems as reservoirs

2. Clastic shallow marine systems as reservoirs

3. Deep marine systems as reservoirs

4. Introduction to techniques in reservoir modelling

5. Geology of the Pyrenean Foreland Basin

The course will include a mixture of fieldwork and class work. The aims of the fieldwork are to illustrate the concepts that are utilized to build reservoir models and provide hands-on experience at building the models.


Application is open for both PhD and Master students.  NFiP will pay the course fee for approved applications. Additional information for booking flight tickets will be provided later.

Dates: Oct. 28th –  Nov. 3rd, 2018
Venue: Spanish Pyrenees
Application deadline: Sep. 21st 2018


You will be divided into 4 groups for the duration of the course. Each morning one of the groups will have a short presentation on the previous day fieldwork.

Tentative program

(Final program will be provided by the beginning of October)

Sunday 28th

Arrival and overnight in Barcelona

Monday 29th

Drive from Barcelona to the Pyrenees

Cross-section along the Southern Pyrenees (ECORS)

  • Structure of a thrust and fold belt.
  • Sedimentary basins associated to the mountain chain building. Overnight in Tremp area.
Tuesday 30th

Introduction to Tremp-Graus basin

Alluvial and Fluvial deposits

  • Alluvial fans (Collegats/Graus conglomerates)
  • Braided river deposits (Castissent sandstone)
  • Meandering river deposits (Pont de Montanyana)

Tectonic influence on the paleogeographic arrangement of the basin (La Calavera pass)

Overnight in Labuerda.

Wednesday 31st

Deltaic and shallow marine deposits

  • Tidal-influenced deltaic systems (Roda sandstone)
  • Introduction to sequence stratigraphy in shallow marine sediments (Roda sandstone)

Introduction to the Aínsa Basin (La Foradada pass)

Overnight in Labuerda.

Thursday 1st

Slope and deep marine deposits

  • Slope and base-of-slope slump and slide features
  • Turbidite channel deposits (Aínsa quarry)
  • Turbidite lobe deposits (Jaca basin)

Overnight in Labuerda.

Friday 2nd

Structure of the Aínsa basin and deformation structures

  • Synsedimentary folding and related unconformities and processes (Mediano anticline)
  • Fracturation associated to folding (Añisclo anticline)

Overnight in Labuerda.

Saturday 3rd

Drive from Ainsa to Barcelona