Why is rock type important in the formation of a waterfall?
GeologyWaterfalls. Waterfalls often form in the upper stages of a river where it flows over different bands of rock. It erodes soft rock more quickly than hard rock and this may lead to the creation of a waterfall. What type of rock creates a waterfall? Sediment can erode stream beds made of soft rock, such
What are the 2 kinds of earthquake?
GeologyThere are two types of earthquakes: tectonic and volcanic earthquakes. Tectonic earthquakes are produced by sudden movement along faults and plate boundaries. Earthquakes induced by rising lava or magma beneath active volcanoes is called volcanic earthquakes. What are the main types of earthquakes? There are four different types of earthquakes: tectonic, volcanic, collapse and explosion.
Did the 1906 earthquake cause a tsunami?
GeologyEven though the magnitude of the 1906 earthquake was large (M 7.8), it generated a tsunami wave only approximately 10 cm in height. What were the effects of the 1906 San Francisco earthquake? Despite a quick response from San Francisco’s large military population, the city was devastated. The earthquake and fires killed an estimated 3,000
How is Coprolite formed?
GeologyCoprolites are the fossilized or preserved remains of the contents of the intestine and the excrement of organisms: fossilized feces. Coprolites are quite rare because they tend to decay rapidly. They are most commonly found among sea organisms. Coprolites of fish and reptiles are especially common. How are coprolite fossils formed? Older fossils, such as
What are sea caves made out of?
GeologySea caves are typically found in sandstone but also appear in other types of sedimentary rock, including limestone. They are less commonly formed in harder rock such as granite. How are sea cave made? sea cave, cave formed in a cliff by wave action of an ocean or lake. Sea caves occur on almost every
What damage did the Kashmir earthquake cause?
GeologyAt least 79,000 people were killed and more than 32,000 buildings collapsed in Kashmir, with additional fatalities and destruction reported in India and Afghanistan, making it one of the most destructive earthquakes of contemporary times. How much damage did the Kashmir earthquake cost? In the village of Pehlwan, in the mountains of northern Pakistan, two
What is Pangea and continental drift?
GeologyThe mechanism for the breakup of Pangea is now explained in terms of plate tectonics rather than Wegener’s outmoded concept of continental drift, which simply stated that Earth’s continents were once joined together into the supercontinent Pangea that lasted for most of geologic time. What is Pangaea and continental drift? According to the continental drift
What are trace fossils made of?
Geology and GeographyTrace fossils are formed when an organism makes a mark in mud or sand. The sediment dries and hardens. It is covered by a new layer of sediment. As the sediment turns to rock through compaction and cementation, the remnant becomes fossilized. How do you make a trace fossil? Instructions Create ideal fossilization conditions. Fossils
What can diorite turn into?
GeologyWhat metamorphic rock does diorite turn into? Gneiss is a high-grade metamorphic rock. It is common only in areas of regional metamorphism. Several different rocks, such as granite, schist, and diorite can be metamorphosed to make gneiss. What does diorite change into? Diorite crystallized slowly within the Earth. That slow cooling produced a coarse grain
What type of volcano is Mount Etna?
GeologyStratovolcano Mount Etna Geology Age of rock 350,000 – 500,000 years Mountain type Stratovolcano Last eruption – present Is Mt Vesuvius still active? Vesuvius is still regarded as an active volcano, although its current activity produces little more than sulfur-rich steam from vents at the bottom and walls of the crater. Vesuvius is a stratovolcano