| 释义 |
Definition of wacke in English: wackenoun ˈwakəˈwækə mass nounGeology A sandstone of which the mud matrix in which the grains are embedded amounts to between 15 and 75 per cent of the mass. Example sentencesExamples - The rounded conglomerate pebbles consist of siltstone, mudstone, wacke, granophyric igneous rocks, and various intermediate to felsic volcanic rocks, set in a matrix rich in quartz and feldspar grains.
- The upper 300 m of the Haengefjeldet Formation is made up of 3-10 m thick well-sorted, normally graded, matrix-supported sandstones and wackes.
- Greywacke is an old term still sometimes used for a particular type of wacke especially in grey-coloured turbidite sequences.
- In the Western zone and the contiguous Hooper Complex, turbiditic quartz wacke was deposited on the Kimberley Craton between c. 1872 and 1865 Ma.
- The Annascaul Formation is at least 500 m thick, and is dominated by mudrocks with subordinate quartz wacke sandstones, tuffaceous fine conglomerates and melange.
Origin Early 19th century: from German, from Middle High German wacke 'large stone', Old High German wacko 'pebble'. Definition of wacke in US English: wackenounˈwakəˈwækə Geology A sandstone of which the mud matrix in which the grains are embedded amounts to between 15 and 75 percent of the mass. Example sentencesExamples - The upper 300 m of the Haengefjeldet Formation is made up of 3-10 m thick well-sorted, normally graded, matrix-supported sandstones and wackes.
- Greywacke is an old term still sometimes used for a particular type of wacke especially in grey-coloured turbidite sequences.
- The rounded conglomerate pebbles consist of siltstone, mudstone, wacke, granophyric igneous rocks, and various intermediate to felsic volcanic rocks, set in a matrix rich in quartz and feldspar grains.
- The Annascaul Formation is at least 500 m thick, and is dominated by mudrocks with subordinate quartz wacke sandstones, tuffaceous fine conglomerates and melange.
- In the Western zone and the contiguous Hooper Complex, turbiditic quartz wacke was deposited on the Kimberley Craton between c. 1872 and 1865 Ma.
Origin Early 19th century: from German, from Middle High German wacke ‘large stone’, Old High German wacko ‘pebble’. |