 | Geological Survey of Alabama - Geology - 1883 - 668 pages
...CHABACTERS. — The rocks of this region are the altered and crj'stalized sediments either of Silurian or preceding ages, and exhibit the greatest diversity,...been converted into great masses of stratified clays, interlamiuated with seams of quartz, which, gradually broken down, cover the ground with their angular... | |
 | Geological Survey of Alabama - Agriculture - 1883 - 664 pages
...CHARACTERS. — The rocks of this region are the altered and crystalized sediments either of Silurian or preceding ages, and exhibit the greatest diversity,...been converted into great masses of stratified clays, interlarninated with seams of quartz, which, gradually broken down, cover the ground with their angular... | |
 | M. B. Hillyard - Southern States - 1887 - 516 pages
...With the varying composition of the rocks come varying degrees of resistance to decay and > TO ism, and hence the great variety in the scenery of this...have undergone complete disintegration in place and Lave been converted into great masses of stratified clays, interlaminated with Seams of quartz, which,... | |
 | Charles Abiathar White - Invertebrates, Fossil - 1889 - 290 pages
...Alabama (and the observation would apply equally well to large areas in Georgia), EA Smith observes i1 In some parts the strata have undergone complete disintegration...down, cover the ground with their angular fragments. The depth to which this decay reaches depends on the nature of the rock and its position, and in many... | |
 | Geology - 1889 - 90 pages
...Alabama (and the observation would apply equally well to large areas in Georgia), EA Smith observes :l In some parts the strata have undergone complete disintegration...been converted into great masses of stratified clays, interlamiuated with seams of quartz, which, gradually broken down, cover the ground with their angular... | |
 | Geological Survey (U.S.) - Geology - 1889 - 1236 pages
...Alabama (and the observation would apply equally well to large areas in Georgia), EA Smith observes :l In some parts the strata have undergone complete disintegration in place, and have been converted into great máseos of stnitilied clays, interlamiuated with scaius of quartz, which, gradually broken down, cover... | |
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There are all gradations between the hard, almost indestructible quartzites to the easily-eroded marble ; from the warm, fertile and undulating granitic and gneissic land to the much broken, often sterile tracts formed by mica slates and other highly... 