31. Ventifact Ridge is a part of a basaltic lava flow. 32. The volcanic cones are composed of andesite, basaltic andesite and dacite. 33. It forms vesicle fillings and linings in altered basaltic lavas. 34. Dredging operations resulted in recovery of basaltic rocks of probable Holocene age. 35. Eruptions of basaltic magma often transition between effusive and explosive eruption patterns. 36. Melting occurred in deep sediments and in the basaltic oceanic crust beneath. 37. The Drakensberg formation comprises the basaltic lava that flowed over the desert. 38. Locally the sections are capped by subaerial basaltic lava flows. 39. Some of the basaltic lava is now part of the Olympic Peninsula. 40. The Bridge River Cones consist of small trachybasaltic and basaltic eruptive centers.
