Field Trip


The Inversion of a Salt-Bearing Passive Margin to Develop a Fold and Thrust Belt: Tectonosedimentary Relationships Across the South-Central Pyrenees

Organized by: AAPG

Thursday, 9 November Friday, 10 November 2023, 9:30 a.m.–6:30 p.m.  |  Lleida, Spain

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Course Content

To achieve the objective, some of the key and most spectacular localities of the southern Pyrenees have been selected along the Ribagorçana transect. Subsurface data (well logs and seismic sections) will be combined with field observations. One of the main characteristics of the southern Pyrenees is the preservation of the synorogenic sediments since the earlier stages of deformation, which not only provide time constraints but also allow us discussion of kinematics of fault-related folds and thrust systems. Finally, the mild contractional deformation permits deciphering the initial geometry of the rift system and the salt structures that configure the structural grain of the passive margin before the inversion, allowing discussion of the role that these structures play during the fold and thrust belt development.

Field Trip Leaders

Josep Muñoz
University of Barcelona
Eduard Roca
University of Barcelona


Who Should Attend

Geologists and geophysicists interested in the role of preexisting passive margin configuration during inversion.


The aim of this field trip is the recognition of the key structural features of a fold and thrust belt detached on salt that has resulted from the inversion of a previous passive margin.



Transportation will be on a small bus assisted by minivans to have access to some of the outcrops.

Physical demand, equipment, and safety

This is an easy field trip with very easy and limited hikes to get to the outcrops. Outcrops will be from main sealed roads and a few mountain trails. Safety vests will be available to be used by everyone wherever required and asked to. There will be a First Aid Kit available in each car during fieldwork.


The climate during early November in the field area can be cold and rainy, although dry and sunny days may occur as well. The temperature for November in Pont de Suert can range between 30C and 150C. Participants should be prepared in case we should encounter bad weather and bring warm, waterproof clothes and suitable hiking boots.

Please Note: Transportation to and from the field trip starting point, Lleida Train Station, is not included in the price.


Professionals and Students
USD $575 + 21% VAT (single occupancy)

Attendee Limit:

25 People

Price Includes:

Lunch both days, dinner, accommodation, breakfast, and field guide. Please note transportation to and from the field trip starting point is not included in the price.

Important notes regarding field trips:

  • Before purchasing non-refundable airline tickets, confirm that the trip will take place as trips may be canceled if undersubscribed.
  • Please register well before 8 October 2023. Field trip cancellation due to low enrollment will be considered at this time. No refunds will be allowed on field trips after this date.
  • Field trips are limited in size and are reserved on a first-come, first-served basis and must be accompanied by full payment.
  • If you do not plan on attending the conference, a U.S. $30 enrollment fee will be added to the field trip fee. This fee may be applied toward registration if you decide to attend the conference at a later date.
  • A wait list is automatically created if a field trip sells out. AAPG will notify you if space becomes available.
  • We will continue to take registrations for field trips not canceled until they are either sold out or closed.



The Inversion of a Salt-Bearing Passive Margin to Develop a Fold and Thrust Belt: Tectonosedimentary Relationships Across the South-Central Pyrenees
Lleida Train Station
Plaça de Berenguer IV
Lleida, Lleida 25005


Alicia Collins Alicia Collins 2023-2023 AAPG Staff, USA