siliceous उदाहरण वाक्य

Umbrisols develop in weathering material of siliceous rock.
Note that not all tests are calcareous; diatoms and radiolaria have siliceous tests.
Both subspecies are calcifuge, occurring only in siliceous sands derived from weathered granite.
After burial, most siliceous oozes remain unconsolidated.
It may be fine and coarse-grained and contain siliceous or argillaceous components.

Siliceous schists are coloured grey, they are metamorphosed sandstone, rich in quartz.
Diatoms, radiolaria and siliceous sponges use biogenic silica as a structural material for skeletons.
Palynology does not include diatoms, foraminiferans or other organisms with siliceous or calcareous exoskeletons.
The granite also contained some highly siliceous fluids that were driven off as it cooled.
Silicate paints require siliceous substrate for setting.