Post Meeting Field Trip
The post meeting field trip will start and finish in Faro. This excursion will highlight important fossiliferous Late Palaeozoic sections:
Day 1: Pedra Ruiva and Murração Sections
The Upper Palaeozoic geology of southwest Algarve is dominated by the Late Devonian Tercenas Formation and the Carrapateira Group of Tournaisian to Bashkirian age. The Pedra Ruiva coastal section exposes superbly the upper part of the Tercenas Formation, consisting of shallow water sandstones. The type section of the Carrapateira Group is located at Murração and Quebradas coastal sections. This group consists of a mud/carbonate succession formed by three formations, from the bottom to the top: Bordalete, Murração and Quebradas. The Bordalete Formation consists of dark shales interbedded by thin bedded siltstones. Miospores and rare macrofauna indicate a middle to late Tournaisian age. The Murração Formation is composed by bioclastic limestones, marly limestones interbedded with shales. Ammonoids fauna and miospores indicate an upper Viséan age. The Quebradas Formation is dominated by black shales with few intercalations of bioclastic limestones. Ammonoids and miospores indicate and Serpukhvian to Bashkirian age. The Quebradas Formation is conformably overlain by turbidites of the Brejeira Formation.
Departure from Faro, exploring the Pedra Ruiva and Murração sections. Dinner and overnight at Aljezur.
Day 2: Telheiro Coastal Section, Cap San Vicent and Praia da Luz.
Variscan unconformity at Telheiro. Highly folded greywackes and shales of the Brejeira Formation of Moscovian age unconformably overlain by interbedded red sandstones and mudstones of Late Triassic age. Visit the Early Jurassic carbonates and dolomites that form the coastal cliffs around Sagres and Cap São Vincente. At “Praia da Luz” outcrops an early Cretaceous (Aptian) sedimentary succession intruded by a late Cretaceous volcanic plug. The sedimentary succession shows at the base, shallow water sandstones with abundant nerinean fossils. These are followed by red/green mudstones and marls with few intercalations of sandstones and limestones, deposited in lagoonal – brackish environments. At the top of the succession are interbedded limestones and marls deposited in an open marine environment. This succession is intruded by basic igneous rocks of late Cretaceous age.
Departure from Aljezur to Telheiro. Visit the Cap São Vicente and lunch at Sagres. Return to Faro with a stop at Praia da Luz.
Day 1: Pedra Ruiva and Murração Sections
The Upper Palaeozoic geology of southwest Algarve is dominated by the Late Devonian Tercenas Formation and the Carrapateira Group of Tournaisian to Bashkirian age. The Pedra Ruiva coastal section exposes superbly the upper part of the Tercenas Formation, consisting of shallow water sandstones. The type section of the Carrapateira Group is located at Murração and Quebradas coastal sections. This group consists of a mud/carbonate succession formed by three formations, from the bottom to the top: Bordalete, Murração and Quebradas. The Bordalete Formation consists of dark shales interbedded by thin bedded siltstones. Miospores and rare macrofauna indicate a middle to late Tournaisian age. The Murração Formation is composed by bioclastic limestones, marly limestones interbedded with shales. Ammonoids fauna and miospores indicate an upper Viséan age. The Quebradas Formation is dominated by black shales with few intercalations of bioclastic limestones. Ammonoids and miospores indicate and Serpukhvian to Bashkirian age. The Quebradas Formation is conformably overlain by turbidites of the Brejeira Formation.
Day 2: Telheiro Coastal Section, Cap San Vicent and Praia da Luz.
Variscan unconformity at Telheiro. Highly folded greywackes and shales of the Brejeira Formation of Moscovian age unconformably overlain by interbedded red sandstones and mudstones of Late Triassic age. Visit the Early Jurassic carbonates and dolomites that form the coastal cliffs around Sagres and Cap São Vincente. At “Praia da Luz” outcrops an early Cretaceous (Aptian) sedimentary succession intruded by a late Cretaceous volcanic plug. The sedimentary succession shows at the base, shallow water sandstones with abundant nerinean fossils. These are followed by red/green mudstones and marls with few intercalations of sandstones and limestones, deposited in lagoonal – brackish environments. At the top of the succession are interbedded limestones and marls deposited in an open marine environment. This succession is intruded by basic igneous rocks of late Cretaceous age.
Departure from Aljezur to Telheiro. Visit the Cap São Vicente and lunch at Sagres. Return to Faro with a stop at Praia da Luz.
Para ter acesso ao guião da visita aqui fica o link- http://cima.ualg.pt/eventos/cimpfaro09/CIMP09_Field_Trip.pdf
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