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" Thus we speak of the mouth of a river being silted up when its entrance into the sea is impeded by such accumulation of loose materials. SIMPLE MINERAL. Individual mineral substances, as distinguished from rocks, which last are usually an aggregation... "
Principles of Geology: Being an Attempt to Explain the Former Changes of the ... - Page 84
by Sir Charles Lyell - 1833
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Principles of Geology: Being an Inquiry how for the Former Changes ..., Volume 4

Sir Charles Lyell - Geology - 1835 - 420 pages
...see. A siliceous rock is one mainly composed of silez. SILICIFIED. Any substance that is petrified or mineralized by siliceous earth. SILT. The more...It is often accumulated by currents in banks. Thus the mouth of a river is silted up when its entrance into the sea is impeded by such accumulation of...
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Report of the Progress of the Geological Survey of ..., Volumes 1-2; Volumes 4-5

Virginia Geological Survey - Geology - 1836 - 552 pages
...belonging to the earth of flint. Etym., silex, which see. A silicious rock is one mainly composed of silex. Silt. The more comminuted sand, clay, and earth, which...It is often accumulated by currents in banks. Thus the mouth of a river is silted up when its entrance into the sea is impeded by such accumulation of...
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Report of the Special Committee: Appointed by the Last Legislature to Report ...

Ohio. General Assembly - Geological surveys - 1836 - 174 pages
...name of one of the pure earths which is the base of flint, quartz, and most sands and sand-stones. Silt. "The more comminuted sand, clay and earth, which is transported by running water." Simple Minerals—Are composed of a single mineral substance. Rocka are generally aggregates of several...
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Principles of Geology: Being an Inquiry how Far the Former Changes ..., Volume 1

Sir Charles Lyell - Geology - 1837 - 568 pages
...see. A siliceous rock is one mainly composed of silex. SILICIFIED. Any substance that is petrified or mineralized by siliceous earth. SILT. The more...running water. It is often accumulated by currents in bonks. Thus the mouth of a river is silted up when its entrance into the sea is impeded by such accumulation...
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Documents Accompanying the Journal of the House of Representatives of the ...

Michigan. Legislature. House of Representatives - Michigan - 1839 - 910 pages
...earths, which it the base of flint, quartz, and most sands and sandstones. Siliceous. Containing silex. Silt. " The more comminuted sand, clay and earth, which is transported by running water." Simple Mimrals — Are composed of a single mineral substance. Rocks are generally aggregates of several...
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Documents Accompanying the Journal ...

Michigan. Legislature - Michigan - 1839 - 910 pages
...earths, which is the base of flint, quartz, and most sands and sandstones. Siliceous. Containing silex. Silt. " The more comminuted sand, clay and earth, which is transported by running water." Simple Minfrah — Are composed of a single mineral substance. Rocks are generally aggregates of several...
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Documents Accompanying the Journal ..., Part 2

Michigan. Legislature - Michigan - 1840 - 632 pages
...which is the base of flint, quartz and most sands and sandstones. Siliceous. Containing silex. Sift. " The more comminuted sand, clay and earth, which is transported by running water." Simple Minerals. Are composed of a single mineral substance. Rocks are generally aggregates of several...
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Documents Communicated to the Senate and House of Representatives ..., Volume 1

Michigan. Legislature - Administrative agencies - 1841 - 630 pages
...earths which is the base of flint quartz, and most sands and sandstones. Silicious. Containing silex. Silt. " The more comminuted sand, clay and earth, which is transported by running water. Simple Minerals — Are composed of a single mineral substance. Rocks are generally aggregates of several...
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Elements of Geology, for the Use of Schools and Academies

William Williams Mather - Geology - 1841 - 310 pages
...name of one of the pure earths which is the base of flint, quartz, and most sands and sand-stones. Silt. " The more comminuted sand, clay and earth, which is transported by running water." Simple Minerals — Are composed of a single mineral substance. Rocks are generally aggregates of several...
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First [-fifth] Report of Progress of the Geological Survey of Missouri, Volume 1

Missouri. State geologist, George Clinton Swallow - Geology - 1855 - 496 pages
...the earth silica. Etym., tilex, which see. A Silicions rock is one mainly composed of silex. Sill. The more comminuted sand, clay and earth, which is...It is often accumulated by currents in banks. Thus the mouth of a river is silted up when its entrance into the sea is impeded by such accumulation of...
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