Excursions
The excursion registration deadline is August 25, 2019.
Brazil boasts a number of confirmed impact structures that, in part, have been very well studied. In order to share this impact heritage with participants, there will be two field excursions after the conference:
Note, the originally scheduled pre-conference excursion to Araguainha has been canceled due to limited interest.
Araguainha Impact Structure:
This 5-day excursion to the 40 km Araguainha Impact Structure, located approximately 800 km west of Brasília, will take place on October 4–8 and will be led by Natalia Hauser and Uwe Reimold.
The excursion will proceed from Brasilia westward through the scenic landscape of the state of Goias into the northeastern most part of the Paraná Basin. The impact structure is located at the border between the states of Goiás and Mato Grosso. The regional stratigraphy but predominantly the impact generated deformation and impactites will be examined for 3 days.
The excursions will feature 1 full-day hike through the interior of the central uplift, which will be somewhat taxing for participants as the temperatures may be well above 30°C. Good hiking-boots are advised and, as with all field work in Brazil, all participants should wear snake-protection (perneiras).
Please note that the excursion fee is largely determined by expensive bus transport, and the costs for that are forced on us by the poor state of the single road across the Araguainha Dome.
Vargeão Dome and Vista Alegre Structures:
There are several impact structures in the southern part of the Paraná Basin, including the 12-km-wide Vargeão Dome and the 9.5 km Vista Alegre structure. Both are formed in sandstone and basalt targets of the Paraná Basin sequence. There will be a 5-day excursion to these two structures following the conference on October 4–8 lead by Alvaro Crósta and Elder Yokoyama. This excursion involves air travel from Brasília to southern Brazil.
Participants will be able to see different types of impact breccias in basalt, as well as unique examples of shatter cones formed in basalt. No long hikes are planned, and the outcrops to be visited are within short walking distances. Hiking boots or sturdy sport shoes are recommended.
Please note that the excursion fee is largely determined by airfares from Brasília to the city of Chapecó, located ca. 1,700 km (1,000 miles) away.
Note: There is a maximum limit of 25 participants for each excursion, so please secure your participation by registering as soon as possible.
