EVA #: 19
Author: Scott Dorrington & Steven Hobbs
Start time: 1000
End time: 1230
Narrative:
This EVA was conducted at Candor Chasma. The rovers possessed sufficient charge to allow sufficient time for the crew to penetrate deeply into the Chasma. Total traverse into Candor Chasma was 500 m, with the crew identifying layers of chicken wire gypsum approximately 4 m below the overlying caprock. Brecciated jaspers were also identified, along with layers of purple, pink and green siltstone. Similar siltstones had previously been collected on earlier EVAs and sampled using the VIS/NIR spectrometer instrument, both solid and powdered form.
No fossils were identified from the overlying strata during the latter part of the traverse. Fossilised ripples were identified from an overhanging boulder, suggesting fluid movement too rapid for fossil formation.
Destination: Candor Chasma.
Purpose of EVA: Attempt to identify fossils by exploring deeper into Candor Chasma, in addition to performing a visual characterisation of the exposed strata for future exploration.
Coordinates (use UTM WSG 84): Entrance to Candor Chasma 520779E, 4251127N. Parking at 519868, 4251428. Maximum penetration 520351E, 4251179N
EVA Participants: Steven Hobbs, Scott Dorrington, Alex Tobal
Road(s) and routes per MDRS Map: Exit Hab via main airlock. Take rovers down the driveway to Cow Dung Rd 0110. Take Cow Dung Rd 0110 North to Galileo Rd 1104, turn south past Compass Rock until rover track stops and then walk along the unnamed track towards Candor Chasma, and into Candor Chasma.
Mode of travel: Rover/foot.
Vehicles you will be using (If applicable): Spirit, Opportunity