Petrography of host rocks The Venarch manganese deposit is accommodated by volcanic and plutonic rocks. The volcanic strata mainly consist of basalt, trachybasalt, andesite, and basaltic andesite which are intruded by monzonite, monzodiorite, granodiorite, and syenite. The plutonic rocks are mostly granular in texture; however other textures such as graphic and poikilitic textures are present. The dominant minerals are plagioclase phenocrysts, quartz, K-feldspar, and hornblende and accessory…
In 1912, German meteorologist Alfred Wegener proposed the theory that all the continents were once all one continent and then later drifted apart and separated leading to the seven continents we have today. He thought that 200 million years ago there was one large continent that he called Pangea, which means “All-Earth.” During the Jurassic period the continents were believed to break up into two smaller continents which were called Gondwanaland and Laurasia. The continents were breaking into…
The concluding part of the Cleveland Way leaves the hustle and bustle of Scarborough behind and returns us to the more enjoyable cliff paths. The coastal scenery is stunning, and with just over 500 feet (152m) of ascent remaining we can appreciate the closing miles and reflect on some of the more memorable experiences of our journey. Resuming from the harbour, we continue along the seafront around the South Bay to the Spa Complex. In 1626 Elizabeth Farrer, the wife of one of Scarborough’s…
The topic of this discussion is to explain why Africa and South America are moving apart. The drifting apart of Africa and South America has to do with the theory known as the theory of plate tectonics. Based on this model, the crust the coolest part of the mantle, make up Earth’s strong outer layer, known as the lithosphere. Right beneath the lithosphere is the asthenosphere, the hottest part of the mantle. Rocks at this depth are very near the melting temperature, and respond to forces by…
Definition Lahars also called mudflows contain fusion of water and consolidated particles of gravel, ice, wood, and other fragments that flow from volcanoes are distinct, prompt, and gravity-induced outflows of drenched, high-consolidation mixtures.(Vallance, 2000) Types Primary lahars These are generated amidst outbursts by numerous eruption-related activities. Such lahars wiped out almost 37,451 people all over the world between AD 1600 and 2010. The Nevado del Ruiz disaster in 1985 caused…
Plate tectonics is a theory about how the plates are constantly moving on top of a layer of magma that is constantly taking in old crust to recycle it this constant movement causes earthquakes, tsunamis and other geological events. The movement of the Pacific and North American plates cause the old sea floor to be replaced by the now wider North American plate. Also with the movement the continental plate was stretched as the Pacific plate pulled the continental plate to the northwest which…
underneath a small town in Haiti’s country district called Léogâne. The earthquake’s features are visually represented in Figure 2, with it placing the epicentre in the town of Léogâne. Figure 2: Map showing patterns in the earthquake and the tectonic plates surrounding it. Also as with all earthquakes there is a reduction in the intensity of shock waves which is directly related to the factors of time and distance, or even the transmission of energy 0through discontinuous materials with…
Directions: This handout serves as a guide for your write-up. The portions required on turnitin.com are noted within the document, as well as at the end. This material must be typed and submitted on turnitin.com by 11.59 pm on Wed., March 23rd (no exceptions .) PhET Lab: Intro. to Magnetism https://www.noodletools.com/noodlebib/mybib.php?highlight=2896337 Part 1: Magnetic Fields and the Earth (30 POINTS) 8. Select “show compass.” Move the compass to several positions around the magnet. Use…
Three agar slants and three nutrient broths were inoculated with Staphylococcus epidermidis using aseptic techniques for transferring samples from broth, agar, and plate cultures. A sterile inoculating loop was used to transfer a loopful of culture from the culture to the sterile media. The lip of the culture tube and inoculated media tube was flamed before and after transfer. The inoculating loop was reserialized after transfer was complete. An agar deep transfer of S. epidermidis was also done…
The search for the legendary lost island known as Atlantis has been grabbing the attention of explorers, historians and philosophers for over 2,000 years. People to this day still argue about its location. Plato, the Greek philosopher, wrote about this ancient civilization in two of his dialogues. Although some argue that this place is fictional, there are scientific and geographical explanations as to why the city would have sunken. Also, there have been relics that were found that suggest they…