What is a rock science?
GeologyTo geologists, a rock is a natural substance composed of solid crystals of different minerals that have been fused together into a solid lump. The minerals may or may not have been formed at the same time. What matters is that natural processes glued them all together. What is a rock easy definition? Definition of
What happens at oceanic continental convergent plate boundary?
GeologyWhen oceanic lithosphere and continental lithosphere collide, the dense oceanic lithosphere subducts beneath the less dense continental lithosphere. An accretionary wedge forms on the continental crust as deep-sea sediments and oceanic crust are scraped from the oceanic plate. What happens at oceanic continental convergent boundaries? When oceanic crust converges with continental crust, the denser oceanic
When those two continents split 65 million years ago what were formed?
GeologyWhen those two continents split 65 million years ago, what were formed? Part of molten rock at mid ocean ridges. Items they provide evidence that continents were once closer together. What were formed when Pangaea broke apart? About 200 million years ago Pangaea broke into two new continents Laurasia and Gondwanaland. Laurasia was made of
What does downwelling cause?
GeologyDownwelling is where surface water is forced downwards, where it may deliver oxygen to deeper water. Downwelling leads to reduced productivity, as it extends the depth of the nutrient-limited layer. Upwelling occurs where surface currents are diverging, or moving away from each other. Does downwelling increase temperature? By Temperature Graphs: Bottom waters suddenly increase and
When was quartz founded?
GeologySeptember 24, 2012 Available in English Net income -$18.4 million (2019) URL qz.com Commercial Yes Launched September 24, 2012 Who founded Quartz? The quick history of Quartz is that the business news publisher was launched in 2012 by co-founders Seward and Kevin Delaney under Atlantic Media with the intention of covering the global economy. Then
What is the difference between surface mining and deep mining?
GeologySurface mining can be done on the surface, such as mountain top, beaches. Underground mining is done by digging tunnels to extract minerals that are too far underground to be reached from surface mining. In alluvial mining, minerals are extracted by dredging alluvial deposits. What is the difference between surface mining and mining? Surface mining
What do you mean by Moho discontinuity?
GeologyThe Moho is the boundary between the crust and the mantle in the earth. This is a depth where seismic waves change velocity and there is also a change in chemical composition. Also termed the Mohorovicic’ discontinuity after the Croatian seismologist Andrija Mohorovicic’ (1857-1936) who discovered it. Where is the Moho discontinuity? Moho, or Mohorovičić
What principle did the studies of James Hutton and Charles Lyell contribute to?
GeologyJames Hutton. Along with Charles Lyell, James Hutton developed the concept of uniformitarianism. He believed Earth’s landscapes like mountains and oceans formed over long period of time through gradual processes. What was the contribution of Hutton and Lyell? Terms in this set (72) How did Hutton’s and Lyell’s ideas influences Darwin’s thinking about evolution? They
What are the different types of igneous rocks?
GeologyThe two main categories of igneous rocks are extrusive and intrusive. Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet. What are the 4 types of igneous rocks?
When was the last major earthquake in New Zealand?
GeologyCanterbury, 2010 (7.1) and 2011 (6.3). While the 2010 earthquake was larger, the 2011 earthquake was more devastating in Christchurch city. Most of the 185 people who died in the 2011 quake were killed in collapsed buildings. Kaikōura, 2016 (7.8).Canterbury, 2010 (7.1) and 2011 (6.3). While the 2010 earthquake was larger, the 2011 earthquake2011 earthquakeOn