Voorbeelden van basalt

• It was built upon a conical peak of basalt, and was surrounded by four deep valleys, one on each side, another in front, and the fourth in the rear. 

• The hills which bound the valley of the creek are basalt, sandstone, and schist. 

• The right bank of the river rose into steep cliffs of basalt, under which the clustered fig tree, with its dense foliage, formed a fine shady bower. 

• The soil is chiefly volcanic ash, disintegrated basalt and alluvium. 

• The spot was quite surrounded by high sloping walls of basalt, except to the west, where they opened in a three-foot cleft to the shore, and the ground was strewn with slabs and boulders of granite and basalt. 

• This lends support to a controlling influence for lithospheric rifting zones on continental flood basalt generation and emplacement.

• We have undertaken three independent field tests to determine whether the magnetization of the andesite and basalt sheets is primary.

• These conglomerates are composed of clasts of basalt, volcaniclastic sandstone, alkaline lava and sub-rounded chert.