These plates (and the more numerous minor plates) move in relation to one another at one of three types of plate boundaries: convergent (two plates push against one another), divergent (two plates move away from each other), and transform (two plates slide past one another). Earthquakes, ...
Normal fault. These are described as being nearly vertical and occur in areas where earth's plates are pulled apart because of a divergent plate boundary nearby. On this fault, the hanging wall pushes down on the footwall. For reference, the hanging wall is the rock pushed above the fault...
Over millions of years, these isolated populations followed divergent evolutionary paths. This phenomenon, called allopatric speciation, allowed unique species to arise on different continents. One example of this diversification is seen in the evolution of marsupials in what is now Australia. After ...
Mid-ocean ridges are formed when two tectonic plates move or pull apart from each other. These zones are referred to as divergent plate boundaries. Where is there a mid-ocean ridge? There are several mid-ocean ridges located in an arc stretching from the Pacific to the Atlantic Oceans. Thes...
Three oceanographers went down in a mini-submarine in 1977 to study a divergent boundary. They wanted to find a volcanic vent located on the seafloor. They found the vent and an entire new ecosystem of animals living around Black Smokers. ...
Most volcanic activity on Earth occurs around plate boundaries, where plates are converging (destroying the lithosphere) or diverging (and a new lithosphere is being created).DIVERGENT PLATE BOUNDARIESTwo tectonic plates separate at the mid-ocean ridges as heated mantle rock moves higher beneath the ...
Divergent boundaries (constructive) occur where two plates slide apart from each other. Active zones of mid-ocean ridges and continent-to-continent rifting are examples of divergent boundaries. Convergent boundaries (destructive) occur where two plates slide toward each other to form either a subductio...
If you travel to the bottom of the middle of the Atlantic Ocean, you will find the Mid-Atlantic Ridge. Earth's whole crust is made up of several large plates, and the Mid-Atlantic Ridge is where two plates meet. These plates are actually sliding apart, called adivergent boundary. Because...
Divergent plates of the lava lake crust. (Photo: Tom Pfeiffer) Observers on the crater rim, illuminated by the glow of the lava lake in the evening. (Photo: Tom Pf... Ash eruptions follow in rapid succession at intervals of often less than a minute. (Photo: Tom Pfei...Eruption...
5:04 min Evidence for the Mechanism of Continental Drift 5:35 min Tectonic Plates | Overview & Names 7:51 min Tectonic Plate Movement | Types, Causes & Effects 7:13 min Plate Tectonic Boundaries | Divergent, Convergent & Transform 8:46 min Ocean Drilling as Evidence for Plate Tectonics 4:...