Levels of U.S. aid to Pakistan have waxed and waned since the 1980s, according to American geo-political initiatives. Since 9/11, the country has received $19.34 billion in economic and military aid from the U.S. for its cooperation in the so-called âwar on terror.â.
There are three types of basalt lava flows: pillow, pahoehoe, and aa. Pillow Lava: Pillow lavas are volumetrically the most abundant type because they are erupted at mid-ocean ridges and because they make up the submarine portion of seamounts and large intraplate volcanoes, like the Hawaii-Emperor seamount chain.Pahoehoeâ and âaaâ are Hawaiian words that describe lava. Pahoehoe Lava: Pahoehoe is the second most abundant type of lava flow. Pahoehoe near the coast of Kilauea. Photo by Steve Mattox, 1989.
1 Igneous Rocks â Lava Textures Lava is an EXTRUSIVE form of Igneous Activity It represents molten rock that has been erupted or extruded onto the earthâs surface from volcanoesLava generally cools quickly (overmonths/years/decades) depending on the thickness of the flow.2  2. Lava Textures-aa Aa lava has a surface made of sharp, angular and jagged blocksof basalt. 2  The cooled surface layer breaks up into these fragments as molten lava continues to flow beneath. 3  8.