hornfels वाक्य
"hornfels" हिंदी में hornfels in a sentenceउदाहरण वाक्य
- These are often extensive surface scatters and deep Hornfels is an unusual and rare material, but is highly distinctive.
- Outcrops of granite tend to form depressions surrounded by a range of hills, formed by the metamorphic aureole or hornfels.
- The baked rock is most prominent within a few hundred feet of the intrusion, appearing as a dark gray hornfels.
- In the margins of these depressions there is evidence of contact baking or hornfels formation adjacent to the once molten basalt dyke.
- They are essentially of pyroxene-hornfels facies, have siliceous sediment or basaltic protoliths, and are respectively metapelites and metabasites.
- They are excessively variable in their mineralogical composition, and very often alternate in thin seams with biotite hornfels and indurated quartzites.
- The rocks here are hornfels, metamorphic rocks resulting from the effects of a major intrusion of granite that produced the coastal mountains.
- The boundary between the geological platform made of greywacke hornfels and the underlying fine-grained Brocken granite runs by the Hohe Klippen.
- The metamorphism was isochemical without introduction of extraneous elements and affected only the sedimentary cover rocks which were transformed into marble and hornfels.
- The most common hornfels ( the biotite hornfels ) are dark-brown to black with a somewhat velvety weathered faces of the rock.