Educational Span Classsearchtermspan Classsearchtermcollectionspan
Educational Span Classsearchtermspan Classsearchtermcollectionspan
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Distribution. Marl like the specimen is found in a large num- ber of lakes in Wisconsin. In deep water shells are less common but there is less sand or clay. The thickness of the deposit in Lake Mendota at Madison is about 40 feet. This has all formed since the glacier disappeared.
Uses. Marl can be used (a) in making cement if sufficiently pure, and (b) to put on soils as a fertilizer. For both of these purposes, however, limestone is more commonly used.
CONSOLIDATED LIMESTONE.
Specimen No. 17.... Limestone, calcite, Mt. Horeb, Dane Co. Description. The brownish spots are composed of dolomite EDUCATIONAL COLLECTION OF WISCONSIN ROCKS 19 with a little iron oxide. The bulk of the rock is calcite. In some specimens crystals of calcite are present filling what were once holes.
Distribution. Calcite limestone is not very common in Wiscon- sin. One formation composed of this material, the Platteville limestone, is found in the southwestern part of the state.
Uses. Calcite limestone is valuable for flux, used in blast fur- naces where the iron is extracted from iron ore, and for cement which is made by burning it (or marl which has little or no mag- nesium), together with clay, and grinding the burned material very fine.
What to read after Educational Span Classsearchtermspan Classsearchtermcollectionspan?
You can find similar books in the "Read Also" column, or choose other free books by F T Fredrik Turville Thwaites to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Distribution. Marl like the specimen is found in a large num- ber of lakes in Wisconsin. In deep water shells are less common but there is less sand or clay. The thickness of the deposit in Lake Mendota at Madison is about 40 feet. This has all formed since the glacier disappeared.
Uses. Marl can be used (a) in making cement if sufficiently pure, and (b) to put on soils as a fertilizer. For both of these purposes, however, limestone is more commonly used.
CONSOLIDATED LIMESTONE.
Specimen No. 17.... Limestone, calcite, Mt. Horeb, Dane Co. Description. The brownish spots are composed of dolomite EDUCATIONAL COLLECTION OF WISCONSIN ROCKS 19 with a little iron oxide. The bulk of the rock is calcite. In some specimens crystals of calcite are present filling what were once holes.
Distribution. Calcite limestone is not very common in Wiscon- sin. One formation composed of this material, the Platteville limestone, is found in the southwestern part of the state.
Uses. Calcite limestone is valuable for flux, used in blast fur- naces where the iron is extracted from iron ore, and for cement which is made by burning it (or marl which has little or no mag- nesium), together with clay, and grinding the burned material very fine.
What to read after Educational Span Classsearchtermspan Classsearchtermcollectionspan?
You can find similar books in the "Read Also" column, or choose other free books by F T Fredrik Turville Thwaites to read onlineMoreLess
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