Main article: Roseanne Conner. Played by Roseanne Barr. Roseanne, in a takeoff of her stand-up comedic and presumed real-life persona, is a bossy, loud, caustic, overweight, and dominant woman. She constantly tries to control the lives of her sister, husband, children, co-workers, and friends.
Where Does Volcanic Activity Occur? Myth: Most of the Earth's igneous rocks are produced at the Ring of Fire.. Fact: 70% of the Earth's surface is ocean floor, which is made of basalt, an igneous rock produced at mid-ocean ridges. The ridges are the most volcanically active features on the planet. Plate boundary volcanism. Volcanic activity occurs at two types of plate boundaries: mid-ocean ridges and subduction zones. At mid-ocean ridges, basaltic eruptions produce new sea-floor crust. These underwater eruptions don't produce big mountainous volcanoes, which is why they are often overlooked as the most volcanically active features on Earth.
A: Basalt is primarily formed by the extrusion of lava flows onto the surface of the earth during a volcanic eruption. The intrusion of a narrow sill or igneous dike below the crust also results in the formation of basalt. Basalt is a type of igneous rock that is typically dark in coloration with a fine-grained texture. It is the most predominant rock type found in Earth's crust, and mainly consists of pyroxene and plagioclase minerals. Volcanoes that form basalt are commonly found near the ocean basins.