Final answer:
A Hawaiian word describing basalt with a jagged, sharp, angular texture is "A'a."
Step-by-step explanation:
The Hawaiian word "A'a" refers specifically to a type of basaltic lava flow characterized by its rough, jagged, and sharp surface texture. This type of lava flow typically forms when highly viscous lava erupts from a volcano and cools rapidly, creating a surface covered with angular, broken pieces of lava called clinkers. The term "A'a" is derived from the Hawaiian language, capturing the essence of the sharp and rough nature of this basaltic rock formation.
This type of lava flow often presents challenges for traversal due to its uneven and treacherous terrain, making it distinct from other forms of lava flows like pahoehoe, which has a smoother, ropy texture.
The unique texture of A'a results from the rapid cooling and solidification of lava, causing the outer surface to harden while the interior remains molten. As pressure builds, the hardened crust breaks into angular fragments, creating a sharp and jagged appearance. This type of basaltic lava flow is commonly found in Hawaii due to the volcanic activity prevalent in the region.