EARTH SCIENCE CROSSWORD

1. OCEAN- The largest example of ocean basin.
7. Is a type of fracture between two blocks of rock
8. A fault rock which is cohesive and characterized by a well-developed planar fabric resulting from tectonic reduction of grain size, and commonly containing rounded porphyroclasts and rock fragments of similar composition to minerals in the matrix.
9. A layer of the earth where most life is found
10. A type of plate boundary that forms mountain range like the Himalayan range.
12. A type of margin that submerged outer edge of the continent where continental crust transitions into oceanic crust.
13. A type of angular fold with straight limbs and small hinges
14. HESS- An American geophysicist in 1960.
16. A geological feature that results from a subduction zone
17. A type of plate movement that occurred in SAN ANDREAS FAULT
18. A feature of the ocean characterized by narrow shelf and slope that descends into a trench or trough.
19. characterized as the undulation or waves in the stratified rocks of Earth’s crust.

2. Is the circulation of material caused by the differences in density. It occurs between the core and mantle or even between the asthenosphere and lithosphere.
3. VALLEY- Is a central valley formed at the summit of the oceanic ridges as the molten materials continuously flow out from the ridges.
4. Ultrafine-grained glassy-looking fragment, usually black and flinty in appearance, occurring as thin planar veins, injection veins or as a matrix to pseudo conglomerates or breccia, which in-fills dilation fractures in the host rock.
5. Is a type of deformation where there are alternatively higher temperatures and pressure.
6. Measurements of ocean depths and the charting of the shape or topography of the ocean floor.
11. type of dip-slip fault in which the block above the fault has moved downward relative to the block below.
15. A layer of the earth that continues on churning due to convection within the earth
20. The kind of boundary that occurs in sea-floor spreading