Definition of greywacke in English:

greywacke

(US graywacke)

noun ˈɡreɪwakəˈɡreɪˌwækə

mass nounGeology

A dark coarse-grained sandstone containing more than 15 per cent clay.
〔地质〕杂砂岩
a 120-foot pyramid of battered greywacke a quarter mile offshore
count noun the shales and greywackes of the Skiddaw Group
Example sentencesExamples
- Geologically the axes from the New Guinea Highlands comprise thermally metamorphosed basalt, chert and greywacke depending on quarry source.
- Higher vapour pressures would be generated in sediments of low permeability, such as mudstones, which would account for sills being more commonly found in shale and greywacke.
- The rocks typically comprise a monotonous sequence of greywackes, reddish-weathering arkosic sandstones, shales and subordinate conglomerates.
- The builders used greywacke from the Rangitata River and limestone brought from Mount Somers and shaped the rocks by hand.
- The Southern Highland Group, consisting of greywacke, shale, limestone and volcanic rock, forms the top of the Dalradian succession.

Origin

Late 18th century (as grauwacke): from German Grauwacke, from grau 'grey' + wacke. The anglicized form dates from the early 19th century.

Definition of graywacke in US English:

graywacke

(British greywacke)

nounˈɡrāˌwakəˈɡreɪˌwækə

Geology

A dark coarse-grained sandstone containing more than 15 percent clay.
〔地质〕杂砂岩
a 120-foot pyramid of battered graywacke a quarter mile offshore
count noun the shales and graywackes of the Skiddaw Group
Example sentencesExamples
- The rocks typically comprise a monotonous sequence of greywackes, reddish-weathering arkosic sandstones, shales and subordinate conglomerates.
- Geologically the axes from the New Guinea Highlands comprise thermally metamorphosed basalt, chert and greywacke depending on quarry source.
- Higher vapour pressures would be generated in sediments of low permeability, such as mudstones, which would account for sills being more commonly found in shale and greywacke.
- The Southern Highland Group, consisting of greywacke, shale, limestone and volcanic rock, forms the top of the Dalradian succession.
- The builders used greywacke from the Rangitata River and limestone brought from Mount Somers and shaped the rocks by hand.

Origin

Late 18th century (as grauwacke): from German Grauwacke, from grau ‘gray’ + wacke. The anglicized form dates from the early 19th century.

词汇	greywacke
释义	Definition of greywacke in English: greywacke (US graywacke) noun ˈɡreɪwakəˈɡreɪˌwækə mass nounGeology A dark coarse-grained sandstone containing more than 15 per cent clay. 〔地质〕杂砂岩 a 120-foot pyramid of battered greywacke a quarter mile offshore count noun the shales and greywackes of the Skiddaw Group Example sentencesExamples Geologically the axes from the New Guinea Highlands comprise thermally metamorphosed basalt, chert and greywacke depending on quarry source. Higher vapour pressures would be generated in sediments of low permeability, such as mudstones, which would account for sills being more commonly found in shale and greywacke. The rocks typically comprise a monotonous sequence of greywackes, reddish-weathering arkosic sandstones, shales and subordinate conglomerates. The builders used greywacke from the Rangitata River and limestone brought from Mount Somers and shaped the rocks by hand. The Southern Highland Group, consisting of greywacke, shale, limestone and volcanic rock, forms the top of the Dalradian succession. Origin Late 18th century (as grauwacke): from German Grauwacke, from grau 'grey' + wacke. The anglicized form dates from the early 19th century. Definition of graywacke in US English: graywacke (British greywacke) nounˈɡrāˌwakəˈɡreɪˌwækə Geology A dark coarse-grained sandstone containing more than 15 percent clay. 〔地质〕杂砂岩 a 120-foot pyramid of battered graywacke a quarter mile offshore count noun the shales and graywackes of the Skiddaw Group Example sentencesExamples The rocks typically comprise a monotonous sequence of greywackes, reddish-weathering arkosic sandstones, shales and subordinate conglomerates. Geologically the axes from the New Guinea Highlands comprise thermally metamorphosed basalt, chert and greywacke depending on quarry source. Higher vapour pressures would be generated in sediments of low permeability, such as mudstones, which would account for sills being more commonly found in shale and greywacke. The Southern Highland Group, consisting of greywacke, shale, limestone and volcanic rock, forms the top of the Dalradian succession. The builders used greywacke from the Rangitata River and limestone brought from Mount Somers and shaped the rocks by hand. Origin Late 18th century (as grauwacke): from German Grauwacke, from grau ‘gray’ + wacke. The anglicized form dates from the early 19th century.
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