Plate Tectonics - Law Dictionary Search Results
Home Dictionary Name: plate tectonicsplate tectonics
A geological theory which holds that the crust of the earth the lithosphere is divided into a small number of large separate plates which float and move slowly around on the more plastic asthenosphere breaking apart and moving away from each other at points where magma upwells from below and driven by such upwellings and other currents on the athenosphere sliding past each other colliding with each other and in some cases being submerged subducted one below the other This theory is now widely accepted and explains many geological phenomena such as the clustered locations of earthquakes mountain building volcanism and the similarities observed between the geology of continents such as South America and Africa which are now far apart but according to the theory were once joined together The motions of such tectonic plates are very slow typically only several centimeters per year but over tens and hundreds of millions of years cause very large changes in the relative positions of the cont...
Gondwanaland
A hypothetical continent that according to plate tectonic theory broke up later into India and Australia and Africa and South America and Antarctica See plate tectonics...
Continental drift
the movements of continents relative to each other across the Earths surface see plate tectonics...
Plate
Plate, of gold and silver. The duties were repealed by the (English) Customs and Inland Revenue Act, 1890, s. 10. The hall-marking of foreign plate is prescribed by ss. 59, 60 of the (English) Customs Act, 1842, as amended by the Hall-marking of Foreign Plate Act, 1904 (4 Edw. 7, c. 6), which directs that foreign plate when brought to be assayed and stamped, as it has to be by revenue law, must be marked so as to distinguish it as foreign, and that every person bringing it to an assay office, unless it be in charge of a revenue officer, must state in writing whether it was bought in England, Scotland, or Ireland, or was imported from foreign parts. Watch-cases imported from foreign parts before 1st June, 1907, are exempted from assay by the Assay of Imported Watch-Cases (Existing Stocks Exemption) Act, 1907. As to the meaning of 'plate' in ss. 2, 6 of the Plate (Offences) Act, 1738, and other statutes, see Faberge v. Goldsmiths' Co., (1911) 1 Ch 286. Gold watches which are jewelled and...
Plating
The art or process of covering anything with a plate or plates or with metal particularly of overlaying a base or dull metal with a thin plate of precious or bright metal as by mechanical means or by electro magnetic deposition...
Plateful
Enough to fill a plate as much as a plate will hold...
Foreign plate
Foreign plate. See PLATE....
Hall-marking of Foreign Plate Act, 1904
Hall-marking of Foreign Plate Act, 1904 (4 Edw. 7, c. 6). See PLATE, and Chitty's Statutes...
L plate
a square plate bearing the letter L that is attached to both ends of a car to indicate that the driver is a learner...
Plate
A flat or nearly flat piece of metal the thickness of which is small in comparison with the other dimensions a thick sheet of metal as a steel plate...
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