Field Notebook: USA 1998c
Page 89
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Transcription
6/29/98 Rifle Hill X. Patterson Construct Red locality (6) in 1995 field co. notebook. We drove from Deerah on US 52, turned off at Harmony MN. taking CO 139 & MN 44 (dirt road) (Closed repair?) However, after several miles MN 44 was closed & we had to take MN 17 and twisted around on roads until an automotive repair works (out among the farms) made a (Via Preston) diagram for us to get to Cherry Grove. As we approached (still some mile out) Cherry Grove we came down a long hill with good rock exposures at bottom of hill across creek we arrived at Rifle Hill X Nothing at top of X in small area that has a separate entry. bottom 4 photos. 3 in main X & 1 in top of X from loose Notes: 1) lots of fine-scale soft sedt deformation in calc. mudstones 2) lot of chest w. structures in chest & these suggest that silicification preceded final compaction of mudstone.