tilliten.
/ˈtɪlʌɪt/ Geology.
A sedimentary rock composed of glacial till compacted into hard rock.
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the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > other sedimentaries
dunstonea1613
rock phosphate1852
psammite1882
tillite1907
flowstone1925
tilloid1931
turbidite1957
1907 E. Blackwelder in B. Willis et al. Res. in China (Carnegie Inst. Publ. No. 54) I. i. xii. 267 (heading) Basal quartzite and glacial tillite. [Note] Tillite, a term recently proposed for consolidated till.
1924 J. G. A. Skerl tr. A. Wegener Orig. Continents & Oceans 47 Southern Brazilian tillite.
1944 A. Holmes Princ. Physical Geol. xxi. 500 Tillites of the same age have been found in the north of Angola, in the eastern Congo, in Uganda, and in Madagascar.
1977 A. Hallam Planet Earth 87 (caption) Striations on smaller rock bodies may be used to identify those as tillites (glacial till converted to rock) rather than tilloids, which are superficially similar.
This entry has not yet been fully updated (first published 1986; most recently modified version published online September 2018).
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n.1907