File:Transactions (1871) (14590097338).jpg

Identifier: transactionsmining27amer (find matches)
Title: Transactions
Year: 1871 (1870s)
Authors: American Institute of Mining, Metallurgical, and Petroleum Engineers
Subjects: Mineral industries
Publisher: New York (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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y 8feet of soil and clay. At the center of Section 3, 13 south, 32west, a well 33 feet deep did not strike the chalk. Wells dugnear the eastern boundary of the chalk-belt show that the chalkis covered by 8 to 10 feet of soil and clay, and that the rock iscompact and bluish wherever it is penetrated. At the residence of Col. A. D. Hawkins, east of Rocky Com-fort (12 south, 32 west, Section 27), a well 57 feet deep is inchalk for almost the entire distance. A sample, of this chalkwas examined chemically with the results shown in Table I.,Analysis No. 4. The two samples, JSTos. 2 and 3, Table I., were taken from agully in the southern part of the town of Rocky Comfort;they were about 2 feet apart when in place, and the only differ-ence apparent in them was that of color, No. 2 being cream-colored and No. 3 bluish-gray. The analysis suggests that thisdifference was partly due to water. From a personal examination of the chalk-beds about Rocky THE CEMENT-MATERIALS OF SOUTHWEST ARKANSAS. 49
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50 THE CEMENT-MATERIALS OF SOUTHWEST ARKANSAS. Comfort, I came to the conclusion that there were about 800acres of the best white-chalk land in that region that could bequarried with little or no stripping of the overlying clays. White Cliffs.—At White Cliffs landing, on the left bank ofLittle river, is a notable exposure of chalk (see sketch, Fig. 3).This exposure is in Little River county, 11 south, 29 west,Sections 25 and 36. At this place Little river cuts close toits left bank and leaves exposed a bluff of limestone and chalkabout 130 feet high. The chalk proper forms the uppermostbed in the section, and is here about 30 feet thick, with amaximum of 40 feet. In 11 south, 29 west, Section 35, northeast quarter of thenortheast quarter, is the section shown in Fig. 4. The lower 100 feet contains a good many fossil oysters, and Fig. 4.

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