TRILO 08 > Field trips



We regret to inform those of you still waiting to confirm your assistance to TRILO that the maximum number of attendees has been reached for both Pre-conference and Post-conference field trips.



pdf  Latest details on Field Trip departure times and pick-up spot (includes map)




Pre-Conference field trip.
June 16-18th

Giant Ordovician trilobites from Canelas, Arouca (northern Portugal) in the Valerio & Figueiredo roofing slates quarry. Co-leaders: A. Sá & J.C. Gutiérrez-Marco. Price: 250 Euro (the fee covers all meals, accommodation –sharing double rooms– and transportation during the excursion). This field trip is restricted to a maximum of 35 participants.

Ordovician outcrops near Arouca are in the southeastern extension of the Valongo anticline located ESE of Oporto city. Here, the Middle Ordovician (Darriwilian) shale of the Valongo Formation bears levels of fine-grained roofing  slate that has been sporadically quarried over the last hundred years. The first references of invertebrate fossils from these quarries were made at the beginning of the last century, and preliminary studies were made by Décio Thadeu in 1956. Renewal of interest in the exploration and commercialization of roofing slates in the area led to the reopening and enlargement of the Valerio quarry. The most outstanding paleontological feature of the quarried slates is the abundance of complete exoskeletons of rare trilobites represented by giant specimens up to 70 cm in length. These belong to nineteen species, mainly asaphids and dikelokephalinids, that occur in association with brachiopods, bivalves, gastropods, large cephalopods (orthocone nautiloids of metric size), echinoderms, hyolitids, conularids, graptolites and ichnofossils.

Departure by bus from Madrid at 2:00 pm on Monday 16th June from the Spanish Geological Survey (23, Rios Rosas Street: metro stop Rios Rosas, on Line 1, exit “Rios Rosas impares”). Return to Toledo on the evening of Wednesday 18th June.



Mid-Conference field trip.
June 21st

Ordovician trilobites and trilobite ichnofossils from the Toledo Mountains. Co-leaders: I. Rábano & J.C. Gutiérrez-Marco. Transportation and meal covered by the registration fee of Trilo08.

During the excursion, participants will be able to collect abundant trilobites from shale at a famous Darriwilian locality south of Toledo (Ventas con Peña Aguilera), followed by a visit to an outstanding outcrop of the Armorican Quartzite with Cruziana ichnofacies in the Cabañeros National Park.

Beginning and end of the excursion in Toledo (9 am to 8 pm).



Post-conference field trip.
June 22-24th

Lower and Middle Cambrian trilobites of selected localities in the Iberian Chains (NE Spain). Co-leaders: E. Liñán, R. Gozalo & M.E. Dies. Price: 250 Euro (this fee covers all meals, accommodation –sharing double rooms– and transportation during the excursion). This field trip is restricted to a minimum of 15 and a maximum of 25 participants.

Two of the most important Cambrian trilobite localities in NE Spain (province of Zaragoza) will be visited. The Jarque section is the most continuous Lower-Middle Cambrian sequence of the Iberian Chains where trilobites from the Marianian to the Languedocian stages have been recorded. The Murero outcrops (Bilbilian to Languedocian) have been known since the 19th Century, when the first trilobites where reported by de Verneuil. Many studies have been carried out since then in the area, including that of an uppermost Lower to Middle Cambrian lagerstätten with several Burgess Shale taxa. Murero is also the type section for the Valdemiedes Event, an extinction event at the classical Lower-Middle Cambrian boundary before the radiation of the paradoxidids in the early Middle Cambrian. Many other groups, such as bradoriid arthropods, brachiopods, echinoderms, sponges, annelids, algae and ichnofossils, have been also recorded in both the Jarque and Murero sections.

Departure from Toledo to Daroca in the early evening of June 22; return to Madrid in the late evening of June 24.