Definition of Graywackes

1. Noun. (plural of graywacke) ¹

¹ Source: wiktionary.com

Definition of Graywackes

1. graywacke [n] - See also: graywacke

Lexicographical Neighbors of Graywackes

graymail
graymails
grayness
graynesses
grayout
grayouts
grays
grayscale
grayscaled
grayscales
grayscaling
grayslick
graystone
graystones
graywacke
graywackes (current term)
graywater
graywaters
grazable
graze
grazeable
grazed
grazer
grazers
grazes
grazier
graziers
grazing
grazing fire
grazing land

Literary usage of Graywackes

Below you will find example usage of this term as found in modern and/or classical literature:

1. Building Stones and Clays: Their Origin, Characters and Examination by Edwin Clarence Eckel (1912)
"Class B. graywackes and Dense Flagstones.—The stones of this group are often as dense ... Stones of this group include most of the " graywackes " of Europe, ..."

2. Bulletin by Geological Survey (U.S.) (1916)
"The graywackes contain secondary calcite, both as a constituent of the rock mass and in the form of veinlets filling fractures. Quartz occurs also as a vein ..."

3. Text-book of Geology by Sir Archibald Geikie (1902)
"The eastern part of the region consists mainly of graywackes and slates which, with their associated igneous rocks attaining a great thickness in the Wieda ..."

4. Transactions of the American Institute of Mining, Metallurgical and (1915)
"West of Katalla seepages have been found belonging to the same belt, in surface rocks of more or less metamorphosed graywackes and slates. ..."

5. Mineral Resources of Alaska: Report on Progress of Investigations in 1915 by Alfred H. Brooks (1916)
"The argillites and slates of this group of sediments consist of the finer clastic materials driven from the same source as that which yielded the graywackes ..."

6. Contributions to the Pre-Cambrian Geology of Northern Michigan and Wisconsin by Rolland Craten Allen, L. P. Barrett, Ermine Cowles Case, W. I. Robinson (1915)
"In the schistose graywackes the flakes of chlorite and sericite are in ... With decrease in the content of feldspar the graywackes grade into arkose and ..."

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