extrusive in English

adjective

1

relating to or denoting rock that has been extruded at the earth's surface as lava or other volcanic deposits.

In practice pyroclastic and volcaniclastic rocks include all the products of extrusive volcanic activity except lava flows.

Use "extrusive" in a sentence

1. Contrast the formation of intrusive and extrusive igneous rocks.

2. Andesite is an extrusive igneous rock that has a porphyritic texture

3. 13 Contrast the formation of intrusive and extrusive igneous rocks.

4. Andesite is an extrusive rock intermediate in composition between rhyolite and basalt

5. The inner subfacies of extrusive facies of subaqueous volcanic rocks are good reservoirs.

6. How to cite Bandaite [ A dacite type of extrusive rock composed of bytownite and labradorite

7. Andesite is an extrusive igneous volcanic rock of intermediate composition, with aphanitic to porphyritic texture

8. Basalt, extrusive igneous (volcanic) rock that is low in silica content, dark in colour, and comparatively rich in iron and magnesium.

9. Andesite is a fine-grained extrusive igneous rock, forming when volcanic magmas erupt and crystallize outside of the volcano

10. Basalts are a group of fine-grained extrusive igneous rocks that have a relatively low silica content, but otherwise vary significantly in composition and appearance

11. Basaltic magmas contain around 50% silica; they are the most common extrusive rocks and comprise more than 90% of all volcanic rock

12. Andesite is the name of a family of fine-grained, extrusive igneous rocks that are usually light to dark gray in color

13. Basalt is a common extrusive volcanic rock, which is usually grey to black and fine-grained due to rapid cooling of lava at the surface of a planet

14. Cinders are extrusive igneous rocks; they are fragments of solidified lava.Cinders are typically brown, black, or red depending on chemical composition and weathering.Cinders are similar to pumice.

15. Amygdules or Amygdales form when the gas bubbles or vesicles in volcanic lava (or other extrusive igneous rocks) are infilled with a secondary mineral such as calcite, quartz, chlorite or one of the zeolites

16. Amygdules or Amygdales form when the gas bubbles or vesicles in volcanic lava (or other extrusive igneous rocks) are infilled with a secondary mineral such as calcite, quartz, chlorite or one of the zeolites.Amygdules usually form after the rock has been emplaced, and are often associated with low-temperature alteration