324 
HUBBARD AND CRONEIS 
Some of this chert is translucent. Minor joints at various angles 
developed by weathering. Calcite veins are numerous and minute 
and form a network through the member, which weathers red 
and brown. 24 feet. 
10. Similar to No. 9 but darker, thinner bedded, and more 
coarsely crystalline. Wave marks are pronounced about two feet 
and a half from the top. 9 feet. 
Note: Small faults of 10 inches and 2 feet respectively below 
and above No. 10. Numbers 9 and 10 constitute a rather mashed 
zone. 
11. Dove colored and pink mottled limestone, much jointed into 
small cuboidal pieces. Fine grained, felsitic with no chert. In- 
conspicuous veins of hematite and limonite. 2 feet. 
12^ Gray blue, massive, dense, fine crystalline limestone, 
coarser towards the top. One heavy layer. Many heavy calcite 
veins some as thick as a half an inch, at right angles to the 
bedding planes. Traces of pink common in the lower parts. 
6 feet. 
13. One foot layer of coarsely crystalline limestone, greyish 
blue in color. 1 foot. 
14. Blue gray, fine crystalline limestone, which is rather 
heavy bedded. There are three zones of chert nodules located 
respectively at the top, middle, and base. The chert is both light 
and dark. Calcite crystals occur in veins and in bunches. The 
bedding is not distinct but there are many irregular joints. 
Weathers a dirty brown. No fossils seen. 25 feet. 
15. Bluish limestone in layers of two feet each, fine grained 
and dense at the bottom, with coarse crystalline layer, ill defined 
and of uneven thickness at the top. Calcite veins minute. Darker 
than most of the units ; has siliceous black shale layers in which 
are embedded fragments of a very different limestone. These 
shales vary in thickness from a knife edge to five or six inches 
and are crumpled in many places. Wave marks at the top. No 
chert. Former small cavities in limestone are filled with calcite 
crystals. 11 feet. 
16. Single layer of light bluish limestone with conchoidal 
fracture. No chert but much calcite veining, often more than a 
half inch in thickness. Mostly fine grained, but with pieces of 
coarse crystalline limestone and sandstone embedded in the layer. 
61/2 feet. 
