Structural Aspects of West Iberian Margin Magmatic Rocks
Date:
Itinerary:
Price:
Course Characteristics:
Physical requirements: Easy. Some field localities may require walking approximately 1500 m on easy terrain.
Duration: 2 days (25-26th May 2024)
Field trip leaders: Pedro Barreto (Geo Logica)
Type: Field course
Area: Lisbon coastal and inland area (Portugal)
Target audience: geology students, geologists, field geologists, oil and gas professionals, CCUS professionals, structural geologists, reservoir geologist and engineers, geology engineers, geophysicists.
Prerequisites: Geological principles, basic knowledge in igneous geology and structural geology basic geophysical principles.
What’s Included: Transportation, meals, accommodation in local hotel*, digital field guidebook, personal insurance and Geo Logica Safety Kit (Personal Protection Equipment)
Minimum participants: 8
Maximum participants: 12
The West Iberian Margin (WIM) recorded three major magmatic events during Mesozoic. The first is related with the Central Atlantic Central Atlantic Magmatic Provence (CAMP) between c. 200-198 Ma (Hettangian) at the end of the first rifting stage, the second, late Jurassic to early Cretaceous (148-140 Ma) in age, is concomitant with the last rifting phase recorded and the third is the most pronounce and widespread along the margin that occurred in a post-rift context during Late Cretaceous (94-69 Ma).
These magmatic events left excellent exposures along coastal and inland areas, both of intrusive and extrusive nature. Recent 3D seismic acquisition campaigns, together with high resolution gravity and magnetic data allowed further identification and characterisation of offshore magmatic structures related with these events.
As a consequence, the central part of West Iberian Margin can be used as a natural laboratory to compare between outcrop and seismic data allowing the interpretation of the structural styles associated to magmatism at different scales.
The main objective of this field trip is to highlight the complexity and problematics of interpreting these magmatic-related structures on different datasets and at scales (outcrops vs seismic), while understanding the implications of magmatism in the regional and local structural framework, hydrocarbon maturation, reservoir properties distribution, trap creation and/or destruction and generation of natural hydrogen accumulation and CO2 sequestration and mineralization.
Main objectives:
- Regional context of WIM;
- Structural styles associated with magmatic rocks (intrusive and extrusive);
- Magmatic rocks and contact metamorphism;
- Source rock maturation associated with magmatic rocks;
- Reservoir properties variations associated with magmatic rocks;
- General concepts of natural hydrogen accumulations;
- Magmatic rocks and CCUS.
Instructors:
- Pedro Barreto
- João Mata
- Tiago Cunha
- Marianne Nuzzo
References:
Pereira, R., Rosas, F., Mata, J., Represas, P., Escada, C., Silva, B. (2020) Interplay of tectonics and magmatism during post-rift inversion on the central West Iberian Margin (Estremadura Spur). Basin Research. 33, 2 1497- 1519.
Pereira, R., Gamboa, D. 2023: In situ carbon storage potential in a buried volcano. Geology (2023) 51 (9): 803–807.
