 |
||
 |
 |
 |
Geology |
Record 1 to 25 of 506 |
 |
Agate "A variety of quartz which is peculiar in consisting of bands or layers of various colors blended together."-Whitney, 1902... |
 |
Agate, Polished A polished agate rock with concentric circles.... |
 |
Albite "Triclinic. Twinning very common, according to the albite law and evidenced by fine striation lines on the better cleavage surface." — Ford, 1912... |
 |
Alluvial Cones Diagram of alluvial cones, showing surface and underground structures.... |
 |
Alluvial Fan Diagram showing the progressive overlapping of the successive divisions of an alluvial fan, away from the source of supply.... |
 |
Ambonychia Mollusk A mollusk radiate from the Paleozoic time, Ambonychia bellistriata.... |
 |
Amygdaloid "Igneous rocks or lavas of various composition."-Whitney, 1902... |
 |
Ancient Tree, Sigillaria Sigillaria is the generic name assigned to this ancient arborescent lycopod. Occassionally the trunks were smooth. Extinct genus of tree-sized lycopsids from the Carboniferous Period (about 360 to 300... |
 |
Andalusite "Andalusite is an aluminum silicate...found in imbedded crystals in clay slate." -Dana, 1883... |
 |
Annularia "Annularia. A fossil plant allied to the Calamites." -Taylor, 1904... |
 |
Anthropods, Paradoxides Harlani Paradoxides was a genus of relatively large trilobites, extinct marine arthropods, that form the class Trilobita found throughout the world during the Mid Cambrian period (540 million years ago). It w... |
 |
Anticlinal and Synclinal Folds An illustration of a section of anticlinal and synclinal folds on the like CD.... |
 |
Anticlinal Fold A symmetrical anticlinal fold, the top of which has been eroded. Near St. Abb's Head, Scotland.... |
 |
Anticlinorium A mountain mass composed of a number of anticlines may have these so arranged that they form a part of a larger arch.... |
 |
Appalachian Mountains This illustration shows the Appalachian Mountains, a region of numerous flexures on a grand scale, as well as many faults; some flexures having a span of several miles, and others only a few feet or i... |
 |
Aquifer, Upper Floridan "Generalized schematic of the hydrogeology of the study area. 1, unconfined conditions (Hawthorn Formation absent or very thin); 2, semiconfined conditions (Hawthorn Formation less than 100 feet thick... |
 |
Archaean Time This is a diagram showing the rocks of the successive periods of time. They are shown in order from the Archaean, in Northern New York, southwestward to the Coal-formation of Pennsylvania, showing th... |
 |
Arsenopyrite "Orthohombric. Usually in tabular diamond-shaped crystals, formed by a short prism terminated by low brachydomes. The brachydomes are usually striated parallel to the brachy-axis. Twinned at times,... |
 |
Artesian System, Dakota East-west section across South Dakota to show the Dakota artesian system. The Dakota sandstone is composed for the most part of well-rounded and well-assorted quartz grains, representing an ancient ri... |
 |
Artesian Well A boring in the ground through which currents of water rise from various depths toward or above the surface.... |
 |
Artesian Well Artesian Wells differ from ordinary wells in that their waters are discharged by natural pressures on their reservoirs, so that pumping is not necessary to raise the water Such wells are therefore tru... |
 |
Artesian Well Conditions "Diagrams illustrating the conditions favorable for artesian wells. In A, the porous bed a is in the form of a basin; in B, it merely dips." -Salisbury, 1919... |
 |
Artesian Wells An artesian well is a confined aquifer whose water is pressurized. Water will thus flow out of an artesian well without pumping.... |
 |
Artesian Wells Artesian wells happen in geology when there is a pressure increase which causes water to jet out of a boring.... |
 |
Articulate Radiate An articulate radiate from the Paleozoic time, Homalonotus delphinocephalus.... |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Next Last |
| Main Menu | Site Map | Search | License | Clipart Help |
Clipart ETC is a part of the Educational Technology Clearinghouse and is funded by various grants. Produced by the Florida Center for Instructional Technology, College of Education, University of South Florida. Email the project manager.