Page:Field Notes of Junius Henderson, Notebook 2.pdf/15

would undoubtedly involve the granite. Following is a generalized section showing their present relations. E and W section across North Box Elder Creek North Box Elder Creek, Colorado just above confluence with south branch. ((drawing in field book, view to S with east edge on left)). The conglomerate where so well exposed is very friable and not calcareous, but a slight exposure just below the confluence effervesces freely in acid. The conglomerate is much thicker than we supposed, as we discovered a little later, with a harder band a little above the exposure just mentioned, then softer above. It answers to the Fountain formation at Boulder Boulder, Colorado except that the cement is weak aside from the ones stratum just mentioned, so that it is covered by debris of the talus slope. Above this are the sandstones, limestones etc., which are equivalent to the Lyons formation at Boulder Boulder, Colorado, a resistant sandstone at the top forming an escarpment on the west and sloping away more gently to the east.