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from article Chert
Chert. (Credit: Doug Sherman/Geofile)
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Image
from article Chert
Ribbon chert and thin shale. Ribbon cherts and thin bedded shales represent extremely slow deposition in an ocean basin distant from a continental margin. (Credit: John A. Karachewski)
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from article Asbestos
The King City Asbestos Company mine in the Coalinga asbestos district of San Benito and Fresno Counties in west-central California. This large chrysotile mine was the last asbestos operation in the United States; the mine closed in 2002. (Credit:…
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from article Asbestos
Transmission electron photomicrographs of chrysotile asbestos (a) at 1000× magnification and (b) at 40,000× magnification, where the hollow-tube morphology is visible.
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from article Asbestos
Transmission electron photomicrographs of (a) amosite asbestos, (b) anthophyllite asbestos, (c) crocidolite asbestos, and (d) tremolite-actinolite asbestos. Note that tremolite and actinolite are part of a solid solution series and differ only in…
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from article Pluton
Schematic block diagram showing the occurrence of the more common types of plutons.
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from article Terrain areas
Distribution of terrain classes over the Earth. The subdivisions are intended to bring out only the most striking contrasts among land surfaces. Percentage of area occupied by each class is given in the text. (After G. T. Trewartha, A. H. Robinson…
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from article Kuroshio
General surface circulation of the North Pacific Ocean. (Adapted from Fig. 2.17 in J. R. Apfel, Principles of Ocean Physics, Academic Press, 1987)
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from article Kuroshio
Flow path of the Kuroshio and Kuroshio extension. Broken lines show the alternative "large-meander" path south of Japan. Smaller arrows show other flows described in the text. (After Y. G. Guo, The Kuroshio, Part II, Oceanog. Mar. Bio. Annu. Rev.,…
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from article Marine biological sampling
Marine sampling devices. (a) Water sampling bottle with attached thermometer rack for recording water temperature at sampling depth. The brass messenger on the wire has just tripped the spring-loaded end closures (after S. Niskin, A…
