basaltic betydelse and definition

Exempel på basaltic

• The east side of the narrow watercourse was of primitive rock, the west side basaltic. 

• The hills were basaltic, but the creeks having cut through the rocks and excavated the sandstone, the valleys were not of such a fertile character as the plains and ridges. 

• The rocks of this basaltic series occur nowhere except near the coast. 

• We have seen that portions of the basaltic ring, two or three miles in length by one or two miles in breadth, and from one to two thousand feet in height, have been wholly removed. 

• We then entered a basaltic plain, richly grassed and less stony than usual. 

• Crustally-contaminated andesites could be produced by combined assimilation and fractional crystallization of basaltic magmas.

• The role of mantle plumes, particularly in the generation of flood basaltic magmas, has been emphasized by many authors.

• This is valid also for variations among the basaltic members, implying either a heterogeneous mantle source or varying components of crustal contamination.