gyttjan.

Brit.

/ˈjɪtʃə/, U.S.

/ˈjɪˌtʃɑ/

Forms: Also gytje.

Etymology: Swedish, = mud, ooze (adopted in its technical sense by H. A. von Post 1862, in K. Sven. Vetenskaps-Akad. Handl. 1).

Geology.

A sediment which is typically black, rich in organic matter, and deposited in productive lakes.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > sediment or alluvium > [noun] > lake sediment

gyttja1887

1887 Encycl. Brit. XXII. 740/1 In the shallow lakes and enclosed bays of the sea there began to be formed and still is in course of formation a deposit known by the name gyttja, characterized by the diatomaceous shells it contains.

1899 Jrnl. Chem. Soc. 76 ii. 39 At Sandefjord the gytje is greasy to the touch, and has the odour of hydrogen sulphide; it is used for mud baths.

1958 F. E. Zeuner Dating Past (ed. 4) iii. 90 There is about one metre of blue lake marl below the polliniferous gyttja.

1970 Nature 19 Sept. 1235/1 At a few places, however, there are thin gyttja-like layers a few centimetres thick, which could have formed in pools over permafrost.

This entry has not yet been fully updated (first published 1972; most recently modified version published online March 2022).

单词	gyttja
释义	gyttjan. Brit. /ˈjɪtʃə/, U.S. /ˈjɪˌtʃɑ/ Forms: Also gytje. Etymology: Swedish, = mud, ooze (adopted in its technical sense by H. A. von Post 1862, in K. Sven. Vetenskaps-Akad. Handl. 1). Geology. A sediment which is typically black, rich in organic matter, and deposited in productive lakes. ΘΚΠ the world > the earth > structure of the earth > constituent materials > sediment or alluvium > [noun] > lake sediment gyttja1887 1887 Encycl. Brit. XXII. 740/1 In the shallow lakes and enclosed bays of the sea there began to be formed and still is in course of formation a deposit known by the name gyttja, characterized by the diatomaceous shells it contains. 1899 Jrnl. Chem. Soc. 76 ii. 39 At Sandefjord the gytje is greasy to the touch, and has the odour of hydrogen sulphide; it is used for mud baths. 1958 F. E. Zeuner Dating Past (ed. 4) iii. 90 There is about one metre of blue lake marl below the polliniferous gyttja. 1970 Nature 19 Sept. 1235/1 At a few places, however, there are thin gyttja-like layers a few centimetres thick, which could have formed in pools over permafrost. This entry has not yet been fully updated (first published 1972; most recently modified version published online March 2022). < n.1887
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