Primary succession can occur after geological events, such as a volcano eruption that emits lava flow, or glaciers that recede. In both of these cases, a new land emerges that may contain rocks but is devoid of soil and ... More »

Forests can grow from bare rocks in about 150 years, according to the U.S. Geological Survey. Many scientists study primary succession in Hawaii because the lava flows from volcanoes create places where primary successio... More »

Primary succession occurs where bare stone or earth is exposed by geologic activity such as volcanism or glaciers. It occurs when all the previous organisms in a habitat are wiped out by some disaster. Common primary suc... More »

A fissure volcano, or fissure vent eruption, occurs when lava erupts through an elongated break in the rock at the surface of the earth. Fissure vent eruptions are common in the mid-ocean ranges. Also known as shield vol... More »

According to the UCSB Geology Department, a volcanic eruption is defined as a volcanic event resulting in the emission of gases, lava, ash or other material from a volcano. These can manifest as a single eruptive pulse, ... More »

A super volcano is a volcano that has the potential of creating more than 1,000 cubic kilometers of ash, pumice, and lava during a single eruption. Super volcanoes erupt very rarely and may go hundreds of thousands of ye... More » Science Earth Science Volcanoes

The inside of a volcano has one or more vents through which gas and lava flow during eruptions. Below the vent is the magma, which is the molten rock that flows upward due to the divergence or convergence of tectonic pla... More »