Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Plural form of
intrusive .
Etymologies
Sorry, no etymologies found.
Support
Help support Wordnik (and make this page ad-free) by adopting the word intrusives.
Examples
-
However, the core of the Blue Mountains and the highest ranges, the Wallowa and Elkhorn Mountains, are composed of granitic intrusives, deep sea sediments, and metamorphosed rocks.
-
End moraines, hummocky hills and depressions, along with areas of Precambrian intrusives are common to 50f as compared to the predominantly rocky ground moraines in 50g to the east.
-
Cryic soils developed on the mixed geology of mostly Tertiary volcanics and Tertiary intrusives, with only minor areas of Precambrian rocks in the Black Range.
-
Sierra Blanca and the Capitan Mountains are composed of Tertiary volcanics and Tertiary intrusives, while the Sandia Mountains to the north have a core of Precambrian rocks capped by Pennsylvanian sedimentary rocks.
-
A complex of Silurian and Carboniferous volcanics and intrusives with Mesoproterozoic serpententites and ultramafics border Proterozoic rocks to the northwest and the McBride basalt to the north.
-
The ecoregion also includes the Nova Scotia Highlands, which encompass the Cobequid Mountains to the west, Antigonish Highlands in the center, and the dissected Cape Breton hills in the northeast which are remnant of a Cretaceous peneplain surface, composed of Palaeozoic metamorphics and Proterozoic intrusives and volcanics.
-
More specifically, this ecoregion is composed of metamorphosed Mesozoic greywacke sandstone, siltstone, and marine volcanics overlain by Miocene intrusives, Pliocene marine and terrestrial fine-grained sediments, and Quaternary lavas and pyroclastics.
-
The physiography of this ecoregion is rough and undulating, and is composed mainly of massive Archean granites, granitic gneiss, and acidic intrusives with some sedimentary rock found along the coast.
-
Gold is disseminated within a highly weathered, clay rich sequence of metamorphosed sandstone and carbonate rocks with associated basic and felsic intrusives.
-
A zonal arrangement of minerals about intrusives is often noted.
Comments
Log in or sign up to get involved in the conversation. It's quick and easy.