What is the mineral composition of scoria?
Regional SpecificsScoria is a volcanic igneous rock. Also referred to as scoriaceous basalt, a term commonly used to indicate a basaltic pumice. It is commonly composed of approximately 50% silica and 10% calcium oxide with lesser contents of potash and soda. What is the composition and texture of a scoria? Texture: aphanitic and vesicular (contains abundant
What were Darwin’s sleeping conditions on the ship?
Regional SpecificsA total of 10 officers, 4 midshipmen and volunteers, 38 seamen and boys, 8 marines, and 8 supernumeraries (including Darwin) started the voyage (the ship being so crowded that Darwin had to sleep in a hammock slung above the drafting table in the poop cabin). Where did Darwin sleep on the ship? Beagle With between
When was the last time Popocatepetl volcano erupted?
Regional SpecificsAfter lying inactive for more than 70 years, Popocatépetl erupted in December 1994, causing an ashfall over Puebla. Volcanic activity recurred in March and October 1996, as well as in April 1997, and in December 2000 thousands of villagers were forced to evacuate after another eruption. When did Popocatepetl erupt in 2021? Ash plumes at
Where are the most earthquakes in the United States?
Regional SpecificsWhat are the four most earthquake prone areas of the United States? Rank State Number of strong earthquakes from from . 1 Alaska 12,053 2 California 4,895 3 Hawaii 1,533 4 Nevada 788 What are the 5 most earthquake prone states in the US? The Most Earthquake Prone US States Rank State Number of strong
How was the Australian continent formed?
Regional SpecificsAustralia as a separate continent began to form after the breakup of Gondwana in the Permian, with the separation of the continental landmass from the African continent and Indian subcontinent. Australia rifted from Antarctica in the Cretaceous. How was the continent of Australia formed for kids? During the past 10,000 years, rising sea levels overflowed
What is an example of transform boundaries?
Regional SpecificsThe most famous example of a transform boundary is the San Andreas Fault in California. The west side of California is moving north, and the east side is moving south. What are some examples of transform boundaries? Some examples of continental transform boundaries are the famous San Andreas fault, the Alpine fault in New Zealand,