Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective geology Being or relating to a type of
metamorphic rock originally produced by avolcano , either aslava ortephra , then buried and subjected to highpressures andtemperatures , causing it torecrystallize .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Some areas near this boundary have metavolcanic and metasedimentary rocks similar to 45c.
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The Kings Mountain ecoregion is a hilly, somewhat rugged area with some northeast - to southwest-trending ridges and distinctive metasedimentary and metavolcanic rocks.
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The mineral-rich metavolcanic and metasedimentary rocks with slatey cleavage are finer-grained and less metamorphosed than most Piedmont regions.
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The boundary between Ecoregion 66a and the Northern Sedimentary and Metasedimentary Ridges (66b) is shown in Figure 1; it follows the contact between igneous-metavolcanic rocks and sedimentary-metasedimentary rocks.
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA) 2008
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Precambrian and Paleozoic metavolcanic and igneous rock underlie Ecoregion 66a.
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA) 2008
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The dissected mountains of the Melange ecoregion are mostly blanketed in Tertiary basalt but have a core of mixed metamorphic, metavolcanic, metasedimentary, and sedimentary rocks.
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The mineral-rich metavolcanic and metasedimentary rocks with slatey cleavage are finer-grained and less metamorphosed than most Piedmont regions.
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The Blue Ridge Mountains (66) are underlain by resistant and deformed metavolcanic, igneous, sedimentary, and metasedimentary rock.
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA) 2008
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It is characteristically underlain by deeply weathered, fine-grained metavolcanic and metasedimentary rocks of the Carolina Slate Belt that have been intruded by igneous rock.
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA) 2008
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The boundary between Ecoregion 66b and the Northern Igneous Ridges (66a) is shown in Figure 1; it follows the contact between igneous-metavolcanic rocks and sedimentary-metasedimentary rocks.
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA) 2008
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