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Definition of Porphyritic
1. Adjective. (of rocks) consisting of porphyry or containing large crystals in a fine groundmass of minerals.
Definition of Porphyritic
1. a. Relating to, or resembling, porphyry, that is, characterized by the presence of distinct crystals, as of feldspar, quartz, or augite, in a relatively fine-grained base, often aphanitic or cryptocrystalline.
Definition of Porphyritic
1. Adjective. of or pertaining to porphyry ¹
2. Adjective. (geology) containing large crystals in a fine mass of material ¹
¹ Source: wiktionary.com
Definition of Porphyritic
1. [adj]
Lexicographical Neighbors of Porphyritic
Literary usage of Porphyritic
Below you will find example usage of this term as found in modern and/or classical literature:
1. Report on the Geology of the State of Connecticut by Connecticut Geological Survey, James Gates Percival (1842)
"porphyritic points are imbedded in a very fine-grained ground. The porphyritic
points, in these rocks, are distinctly compound ; generally four distinct ..."
2. The Natural History of Igneous Rocks by Alfred Harker (1909)
"porphyritic Structure.—In this chapter we shall discuss briefly some of the ...
From this point of view the most significant structure is the porphyritic. ..."
3. Encyclopaedia Britannica: A Standard Work of Reference in Art, Literature (1907)
"Among the finest rocks of this class in Britain are the porphyritic granites of
Cornwall and of Shap in Westmoreland ..."
4. Bulletin by Geological Survey of Georgia (1902)
"porphyritic granite, from the Georgia Quincy Granite Company's county. ...
porphyritic granite, from the Moseley quarry, near East Point, Fulton porphyritic ..."
5. Geological Observations on South America: Being the Third Part of the by Charles Darwin (1846)
"Central Chile—Basal formations of the Cordillera—Origin of the porphyritic
clay-stone conglomerate—Andesite—Volcanic rocks—Section of the Cordillera by the ..."
6. Quantitative Classification of Igneous Rocks: Based on Chemical and Mineral by Whitman Cross, Joseph Paxson Iddings, Louis Valentine Pirsson, Henry Stephens Washington (1902)
"With the term phyr may be combined one indicating the texture of the groundmass
as follows : porphyritic granitic; ..."
7. Manual of the Geology of Connecticut by William North Rice, Herbert Ernest Gregory (1908)
"Prospect porphyritic Gneiss [9].— The Prospect gneiss occupies a triangular area
in the towns of Prospect, Cheshire, and Southington, limited eastward by ..."
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