...stated : Those of the better class of uplands are formed by a yellow or brownish loam, varying greatly in thickness from a few inches to as much as 20 feet, but averaging •¿a Soluble silica Fotaâh Soda No. 180. ¡ No. 290. Ï5!*» LA FATKTTE соиктт (R....

...there are 18 feet of this clay. Intimately associated with these deposit is a bed of peat, which varies in thickness from a few inches to as much as 20 feet. It is well exposed in the Humber at Melton below high-water mark, and has been met with in several...

...mainly sandstones, but there are also many beds of shale, and in places there are coal beds, which range in thickness from a few inches to as much as 20 feet. An old prospect in one of the thick beds is shown in Plate LXXX, B (p. 195). The coal beds, however...

...in the Iowa Gulch area, occurs as dikes intruded into nearly all the faults. The fault traces vary in thickness from a few inches to as much as 20 feet, averaging approximately 2 feet. Generally, abundant gouge is presen; in the faults, indicating considerable...

...bentonite is a dense homogeneous clay in which individual grains cannot be distinguished. The bentonite beds range in thickness from a few inches to as much as 20 feet. The base of the Salt Lake formation in the vicinity of Trapper Creek is a thick sequence of friable...

...part of the township, where the coal is commonly split into two benches, separated by rock ranging in thickness from a few inches to as much as 20 feet. The lower bench reaches a maximum observed thickness of 6 feet 2 inches at locality 706, and the upper...

...feet thick and locally contain thin siliceous layers parallel with bedding; quartzite and shale layers range in thickness from a few inches to as much as 20 feet and are most abundant in upper 200 feet of formation. Thickness about 1,300 feet. Overlies Crystal...

...principally of quartz and plagioclase feldspar and contains lesser amounts of muscovite and biotite. Beds range in thickness from a few inches to as much as 3 feet ; many are finely laminated, and a few have graded bedding. The schist and graywacke have been...

...sequence varies much from place to place. It includes both marine and terrestrial sediments. The limestone beds range in thickness from a few inches to as much as 20 feet. Those from 3 to 6 feet thick are most common and retain their individuality for considerable distances...

...sequence varies much from place to place. It includes both marine and terrestrial sediments. The limestone beds range in thickness from a few inches to as much as 20 feet. Those from 3 to 6 feet thick are most common and retain their individuality for considerable distances...