Petroleum Systems of the Western Iberian Margin
Friday, May 4, 2018 to Saturday, May 5, 2018
8:00 a.m. - 6.30 p.m.
Lusitanian Basin, Portugal
Who Should Attend
Geologists and geophysicists interested in looking at a fully outcropping North Atlantic passive margin and its Petroleum Systems.
To learn about the long-lived evolution of an Atlantic Margin and the way its Petroleum Systems are originated and articulated within the geodynamic and paleogeographic regional framework.
About Field Trip
The Lusitanian Basin, located at the Western Iberian Margin, provides a unique opportunity to look at a completely exposed North Atlantic Margin. For over hundred million years, this basin suffered extension and subsidence, with two rifting phases and a break-up/drift phase, responsible for an over 5 km-thick sedimentary infill. Basin’s inversion related to the Alpine compression up-lifted large sectors, exposing the whole lithostratigraphic sequence. Different potential source-rocks and reservoirs are recognized in this basin and active petroleum systems with oil- and gas-shows have been studied and extensively drilled, with no commercial discoveries so far.
This Field-trip will present the two major Petroleum Systems (PS) of the Lusitanian Basin: i) Lower Jurassic PS – Pliensbachian marine marls + Lower Cretaceous siliciclastic reservoirs; ii) Upper Jurassic PS – Callovian lagoonal marls + Upper Jurassic carbonate and siliciclastic reservoirs. A Pre-Salt PS will also be discussed.
The visit will be based mainly in extensive outcrop observations, including seismic-scale reservoir geometries, but selected seismic lines, well data and geochemical analysis will also be shown. Geodynamic evolution, basin architecture and salt tectonics (including seismic scale piercing diapirs) will also be presented and discussed.
Day 1 - Lower Jurassic Petroleum System
- 8.00 a.m. - Board bus at Sana Malhoa Hotel and 2 hour drive (mostly highway)
- Stop 1 – São Pedro de Muel beach. Lower Jurassic Source-Rock. Pliensbachian marls representing deep marine anoxic environments. 0.5 hour drive.
- Stop 2 – Paredes de Vitória beach (500 m walk along a sandy beach, to reach the outcrop). Lower Jurassic-sourced oil-seep in Late Cretaceous fluvial siliciclastics. Migration related with a piercing and outcropping diapir wall. Lunch and 0.5 hour drive.
- Stop 3 – São Martinho do Porto. Pinch-out geometries related with piercing diapir. 0.5 hour drive.
- Stop 4 – Praia D’El Rey beach. Late Cretaceous braided fluvial siliciclastics (reservoir). 0.5 hour drive
- Stop 5 – Peniche beach. Pliensbachian marls Source-rock. Deep marine anoxic environments.
- Peniche Hotel: Check-In, relax break and short Presentation “Pre-Salt Petroleum System” (30 min)
- Dinner and overnight
Day 2 - Upper Jurassic Petroleum System
- 8.30 a.m. – Board bus and 1 hour drive
- Stop 1 – Montejunto. Regional overview of the Late Jurassic hyper-subsident sub-basins.
- Stop 2 – Vale das Rosas. Callovian lagoonal marls (Source-rock) and Oxfordian marine fractured limestones (Reservoir). Lunch and 1 hour drive.
- Stop 3 – Santa Cruz beach. Light lunch. Late Jurassic reservoirs, representing a turbiditic-deltaic-fluvial regressive sequence, exposed along an outcropping piercing diapir wall. 1 hour drive to Lisboa (6.00 pm at Airport; 6.30 pm at Meeting Point).
Departure Time and Place
Location: Conference Venue, Hotel Sana Malhoa
Departure Time: 8:00 a.m.
330 Euros (single occupancy)
(limited to 6 people) – 240 Euros (double occupancy)
Ground transportation to and from Lisboa. One-night stay and dinner at Hotel, two lunches, refreshments and guidebook.
Transportation to the starting point is not included in the cost of this trip.
Temperatures can range from 54 to 72 degrees Fahrenheit during this time period. Please bring clothing for hot day time temperatures (sun hat/ sun glasses/ sun cream etc.). Participants should wear light trekking shoes for easy and short walks on sandy beaches or paved paths.