EVA Field Crew: Dennis Creamer, Jason Schwier, Daniel Hegeman

Lab Imaging: Ryan L. Kobrick and Dennis Creamer

Description: EVA 7 was the second Geological Specimen EVA. The crew followed the directions as outlined by RST and traveled about 1.5 kilometers south of the Hab to a small rift leading eastward off of the Lower Blue Hills ridge. The crew traveled by ATV (after unsuccessfully driving the PEV) most of the way and walked the rest and acquired a total of 6 samples: 3 sandstone and 3 conglomerates. They also took a panoramic photograph of the general site, showing the cardinal directions (marked with a crew member), and some general photos of the layering in the area. For each sample they noted the GPS coordinates and type of sample and snapped a photograph showing the sample, its orientation, and size (next to a ruler.) The crew bagged the samples for further analysis by RST and also collected some interesting rocks for themselves. During the whole excursion the wind was very intense so the field crew decided not to stay and get more samples. All samples were taken between the South and West (from panoramic view) on the ridge.

(Click Image for Detailed View) Crewmember marking cardinal directions where the far left marker is North.
Facing East from side of collection ridge	Facing South at collection ridge
Sample 7-1
Grey conglomerate outcrop	Close up of Sample 7-1 in field
Description: Grey sample with small rounded intrusions found in a conglomerate strata of fine-grained rock. Rationale for Collection: As directed by RST. Hypothesis: Conglomerate. Sample 7-1 Close up in Lab Weathered Microscopic Image 3x Internal Microscopic Image 3x
Sample 7-2
Sample 7-2 Context	Close up of Sample 7-2 in field
Description: Very fined grained brownish light cream colour. Rationale for Collection: As directed by RST. Hypothesis: Sandstone. Close up in Lab Weathered Microscopic Image 3x Internal Microscopic Image 3x
Sample 7-3
Close up of Sample 7-3 in field	Sample 7-3 Close up in Lab
Description: Grey with many inclusions. The inclusions are of various colours. Rationale for Collection: As directed by RST. Hypothesis: Conglomerate.
Weathered Microscopic Image 3x	Internal Microscopic Image 3x
Sample 7-4
Sample 7-4 Context	Close up of Sample 7-4 in field
Description: Very fined grained and highly compressed sample. One side had a "desert varnish" and was different coloured. Brownish in colour with fine "sand-paper" texture. Rationale for Collection: As directed by RST. Hypothesis: Originally thought to be sandstone but lab results indicate a much harder substance, possibly flint since sparks were noticeable on attempted to crack. Only top surface was removed for the internal image. Close up in Lab Weathered Microscopic Image 3x Internal Microscopic Image 3x
Sample 7-5
Sandstone layering	Close up of Sample 7-5 in field
Description: Light brown thin sample with fine grains. Rationale for Collection: As directed by RST. Hypothesis: Sandstone. Close up in Lab Weathered Microscopic Image 3x Internal Microscopic Image 3x
Sample 7-6
Close up of Sample 7-2 in field	Sample 7-6 Close up in Lab
Description: Small sample with various colour inclusions. Sample crumbled in lab under impact. Rationale for Collection: As directed by RST. Hypothesis: Conglomerate.
Weathered Microscopic Image 3x	Internal Microscopic Image 3x