Sentence examples similar to high grade rocks from inspiring English sources

Metabasite predominates in these high-grade rocks and has nascent island-arc affinity (Wakabayashi et al. 2010).

The reconnaissance mapping done here did not completely define the extent of metachert and metaultramafic horizons in the high-grade rocks, but they certainly extend further along strike than shown.

The Allochthon Boundary Thrust is thus a material focal plane separating high-grade rocks derived from opposite sides of the orogen metamorphosed at different times under different P T t gradients.

The positive anomaly along the western margin of the basin defines the boundary between the East Antarctic Craton and the Ross Orogen, and the anomaly along its eastern flank likely reflects high-grade rocks of the central Wilson Terrane.

The low-grade components of the greywackes were derived primarily from volcanic rocks; the high-grade rocks are coarser-grained and contain minerals that reflect higher temperatures.

Furthermore, suitable high-grade rock phosphates represent a finite resource near depletion (Runge-Metzger 1995).

The area comprises low-to-high grade metamorphic rocks as well as carbonate rocks such as limestone and dolomite.

Currently known high grade easily-acquirable phosphate rock reserves are depleting.

Country rocks to the granites are Precambrian high-grade metamorphic rocks located on both sides of a Triassic suture between the North and South China blocks.

Granitization may occur on a small, localized scale, as in the formation of migmatite in which igneous rocks of granitic composition are intermixed with high-grade metamorphic rocks.

Characteristically the more common pyroxenes are found in mafic and ultramafic igneous rocks where they are associated with olivine and calcium-rich plagioclase and in high-grade metamorphic rocks such as granulites and eclogites.