cratonn.

/ˈkratɒn/

Forms: Also †kraton.

Etymology: < krato- + -n (in kratogen n.) with alteration of initial letter, perhaps after crater n., etc.

Geology.

A large stable block of the earth's crust that has resisted deformation over a (geologically) long period of time; = kratogen n.

ΘΚΠ

the world > the earth > structure of the earth > [noun] > fundamental complex > kratogen

old land1895

kratogen1923

craton1935

1935 tr. H. Stille in Research & Progress I. 10 In the Asiatic portion of the latter [sc. continental Eurasia] we observe the same process of continental growth as in Europe. Here too we have primordial craters [corrected (p. 94) to cratons], such as ‘Angaraland’ in the centre of Northern Siberia..and also a ‘Paleo-Asia’.

1942 Bull. Geol. Soc. Amer. 53 1640 The Michigan basin..is a geosyncline defined by causes within its area; the latter [sc. the Allegheny belt] was depressed in complement to uplift near by... Both are within the craton or ‘shield’.

1970 Cambr. Anc. Hist. (ed. 3) I. i. i. 5 For these platforms incorporating remnants of past orogenic belts Stille invented the term ‘kraton’, of obscure etymology but considerable convenience.

1979 Sci. Amer. Jan. 70/2 Together the shields and platforms constitute the cratons, the stable blocks that are the nuclei of present-day continental masses.

1986 New Yorker 24 Feb. 39/3 Had this been a May morning a hundred million years ago,..we would have been many fathoms underwater, in a broad arm of the sea, which covered the continental platform—reached across the North American craton, the Stable Interior Craton—from the Gulf of Mexico to the Arctic Ocean.

Derivatives

craˈtonic adj. of, pertaining to, or designating a craton.

ΘΚΠ

the world > the earth > structure of the earth > [adjective] > kratogen

kratogenic1934

cratonic1935

cratonal1944

1935 tr. H. Stille in Research & Progress I. 10 And so there arose at last the great craterous [corrected (p. 94) to cratonic] ring ‘Peri-Arctis’.

1971 I. G. Gass et al. Understanding Earth xxii. 320/2 All of these areas lie within the older cratonic regions of Africa.

1976 A. Rittmann & L. Rittmann Volcanoes 120/1 Deposits of mercury, silver, gold, uranium and lead are derived from orogenic volcanism, and iron, copper, nickel, manganese and titanium from cratonic volcanism.

1992 Earth Surface Processes & Landforms 17 339 This contradicts Fairbridge and Fiukl's suggestion that cratonic denudation rates are several orders of magnitude less than those of other areas.

craˈtonal adj. = cratonic adj.

ΘΚΠ

the world > the earth > structure of the earth > [adjective] > kratogen

kratogenic1934

cratonic1935

cratonal1944

1944 Science 9 June 462/2 The cratonal flexure of the Lower Pennsylvanian miogeosyncline lies west of the Adirondack line.

1991 Sci. Amer. May 54/1 Simultaneously, another type of ore deposit began to form in cratonal regions, the growth centers of continents.

This entry has not yet been fully updated (first published 1997; most recently modified version published online December 2020).

单词	craton
释义	cratonn. /ˈkratɒn/ Forms: Also †kraton. Etymology: < krato- + -n (in kratogen n.) with alteration of initial letter, perhaps after crater n., etc. Geology. A large stable block of the earth's crust that has resisted deformation over a (geologically) long period of time; = kratogen n. ΘΚΠ the world > the earth > structure of the earth > [noun] > fundamental complex > kratogen old land1895 kratogen1923 craton1935 1935 tr. H. Stille in Research & Progress I. 10 In the Asiatic portion of the latter [sc. continental Eurasia] we observe the same process of continental growth as in Europe. Here too we have primordial craters [corrected (p. 94) to cratons], such as ‘Angaraland’ in the centre of Northern Siberia..and also a ‘Paleo-Asia’. 1942 Bull. Geol. Soc. Amer. 53 1640 The Michigan basin..is a geosyncline defined by causes within its area; the latter [sc. the Allegheny belt] was depressed in complement to uplift near by... Both are within the craton or ‘shield’. 1970 Cambr. Anc. Hist. (ed. 3) I. i. i. 5 For these platforms incorporating remnants of past orogenic belts Stille invented the term ‘kraton’, of obscure etymology but considerable convenience. 1979 Sci. Amer. Jan. 70/2 Together the shields and platforms constitute the cratons, the stable blocks that are the nuclei of present-day continental masses. 1986 New Yorker 24 Feb. 39/3 Had this been a May morning a hundred million years ago,..we would have been many fathoms underwater, in a broad arm of the sea, which covered the continental platform—reached across the North American craton, the Stable Interior Craton—from the Gulf of Mexico to the Arctic Ocean. Derivatives craˈtonic adj. of, pertaining to, or designating a craton. ΘΚΠ the world > the earth > structure of the earth > [adjective] > kratogen kratogenic1934 cratonic1935 cratonal1944 1935 tr. H. Stille in Research & Progress I. 10 And so there arose at last the great craterous [corrected (p. 94) to cratonic] ring ‘Peri-Arctis’. 1971 I. G. Gass et al. Understanding Earth xxii. 320/2 All of these areas lie within the older cratonic regions of Africa. 1976 A. Rittmann & L. Rittmann Volcanoes 120/1 Deposits of mercury, silver, gold, uranium and lead are derived from orogenic volcanism, and iron, copper, nickel, manganese and titanium from cratonic volcanism. 1992 Earth Surface Processes & Landforms 17 339 This contradicts Fairbridge and Fiukl's suggestion that cratonic denudation rates are several orders of magnitude less than those of other areas. craˈtonal adj. = cratonic adj. ΘΚΠ the world > the earth > structure of the earth > [adjective] > kratogen kratogenic1934 cratonic1935 cratonal1944 1944 Science 9 June 462/2 The cratonal flexure of the Lower Pennsylvanian miogeosyncline lies west of the Adirondack line. 1991 Sci. Amer. May 54/1 Simultaneously, another type of ore deposit began to form in cratonal regions, the growth centers of continents. This entry has not yet been fully updated (first published 1997; most recently modified version published online December 2020). < n.1935
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