The St. Francois Mountains

The Yellowstone volcano is very active volcanic system which requires much observation. The geysers, mudd pots, hotsprings and steam vents are all examples of the heat from molten rock of a volcano. For many years the Yellowstone volcano could not be located. There is not obvious signs of a volcano, but scientists looked for other clues. Rhyolite is present in a location that has pinetress and many mosquitoes can be found due to the lakes that have formed. Rhyolite is a very violent eruption, due to the high silica content,  it flows slowly, like honey, and tends to pile up and form lava

The volcanoes are located where there is a divergence or convergence in the tectonic plates and bring their lava from the deepest of the terrestrial mantle. The materials and explosions of these ginates represent a constant risk in the places inhabited by the human being, nevertheless the people ususually live in these areas no matter the risk. On the other hand the volcanos can change the geology of an impressive form, or to cool the temperature of the earth, or to darken the sky. The scientific community increases its efforts to try to understand better what happens in volcanoes, however it is impossible to predict these conditions.

The youngest of these rocks are dated at about 220,000 years ago. Rhyodacties and quartz latites in the modern caldera area extruded from about 320,000 years ago to 260,000 years ago, and then silica-rich rhyolites at Glass Mountain northeast of the caldera erupted from about 210,000 years ago to 80,000 years ago. The scattered distribution of the initial mafic eruptions indicates that they were erupted from the mantle, while the slightly younger domes and flows were from a deep-crustal source. The youngest rhyolite eruptions erupted at the northeast rim of the caldera at Glass Mountain and were the first activity of the silicic Long Valley magma chamber (Bailey, et. al., 1989).

Another geographic zone in Canada is the St.Lawrence Lowlands. The St. Lawrence Lowland is one of the smallest geographic zones found in Canada, only sizing in 180,000 kilometers squared. This Geographic zone can be found in Quebec and southern Ontario or the most southern region Canada. St.Lawrence Lowlands are composed of flat lands. The flat lands of the St.Lawrence Lowlands contain rich soil well suited for agriculture. The overall climate in St.Lawrence Lowlands is warm. Toronto and Montreal is located within this region, which means about 50% of Canada’s population lives here. Also the St.Lawrence Lowlands is home to the largest manufacturing industry, about 70% is located there. Also large amount of hydro-electricity is produced there

Introduction - For the period of Sunday, August 28th – Sunday, September 4th, 2011, students from the University of Saskatchewan geological sciences department along with professors Dr. Kevin Ansdell and Dr. Kyle Larson took part in a geologic field school in and around the city of Flin Flon, Manitoba. The purpose of this field school was for students to

Quebec is the providence in Canada, covering nearly 600,000 square miles. The notable landmasses found within Quebec include the Canadian Shield and the Appalachian Mountains. The Encyclopedia of Britannica reveals that the Canadian Shield has ice-smoothed hills, and is the most massive area containing exposed Precambrian rock (Behiels). The Appalachian Mountains are the separating feature distinguishing the Quebec’s borders from Main, Vermont, and New Hampshire (“Quebec Mountains”). The St. Lawrence River flows southwest of Lake Ontario to the northeast. Attractions involving the river include the Québec-Lévis ferry, cruises, and strolls on the Promenade Samuel-De Champlain (Quebec).

Silicious lava, forced up from deep down below. Soda trachytes extruded in a highly viscous state, building the steep-sides mametons we see in Hanging Rock. And quite young, geologically speaking. Barely a millions years old. (Greene, 11)

Mount St Helens erupted on the 18th May 1980 at 9am and is an active strata volcano Washington State USA, a MEDC. Where as on 18th July 1995, during the daytime, Montserrat, a LEDC during the day, Montserrat's Soufrière Hills composite volcano of a height 1050m, meaning sulphur hills, dormant for centuries, erupted and produced a phreatic eruption. The volcano is a strata volcano also. Mount St. Helens is a composite volcano which lies near to a destructive plate boundary where the small Juan de Fuca Plate is being subducted underneath the North American Plate where as the eruption

Another well-known geological phenomenon in the United States is Yellowstone Park. Yellowstone is an extraordinary example of a caldera which is defined as “a volcanic crater that has a diameter many times that of the vent and is formed by collapse of the central part of a volcano or by explosions of extraordinary violence”(USGS). Since Yellowstone is a caldera, it means that there had been previous volcanic eruptions in this area and in this case two eruptions. The first explosion happened over 2,000,000 years ago because the composition of the magma contained vast traces of explosive matter that caused the eruption (USGS). The second incident happened around

It is minimal realized that lying underneath one of The United States biggest and most beautiful National Parks - Yellowstone Park - is one of the biggest "super volcanoes" on the planet. Every year, a huge number of guests come to respect the hot springs and fountains of Yellowstone, the Nation's first national park. Few are mindful that these miracles are powered by hotness from a vast repository of incompletely liquid rock (magma), simply a couple of miles underneath their feet. As this magma-which drives one of the world's biggest volcanic frameworks climbs, it pushes up the Earth's hull underneath the Yellowstone Plateau.

Lava flows of rhyolite and basalt have flowed through parts of Yellowstone as recently as 70,000 years ago. These lava flows destroyed everything in their paths while moving slowly at a rate of a few hundred feet per day, flowing months, or sometimes even several years. They are thick and cover as much as 130 square miles. They have nearly filled the Yellowstone Caldera, and spilled beyond the caldera’s border. These lava flows are responsible for forming four of the nine named plateaus in

The eroded mountains: the mountains imn question for the Canadian shield were not really true mountains. In reality they were volcanos! But over hundreds upon hundreds of years the volcanic activity decreased and eventually became non-existent. The region has some of the most ancient volcanoes on the entire planet with some of the oldest being 1200 Million years old! These volcanoes existed in belts, where some of them reaching 12000 meters tall! One of the craziest things about the belts are the numbers of them, there were around 150 known volcano belts in this region! The reason that we don’t know the exact number is because they were all eroded and flattened into plains of

Early Holocene deposition postdates latest Pleistocene volcanic eruptions at Cerro Pomo cinder cone and Zuni Salt Lake maar (Appendix A). Unit 1 deposition began prior to ~10.2 ka, ending by ~7.5 ka in piedmont areas and by 7.1 ka in valley contexts. Early Holocene aggradation was followed by a brief depositional hiatus and period of soil formation perhaps

The Great Lakes-St. Lawrence Lowlands is also known as the smallest geographical region in Canada. This region was formed almost 500 million years ago when a glacier began to recede at the end of an ice age resulting it to melt. The size of this region is 180 000 km2 and provinces located here are Quebec and Ontario. The climate here is very humid and it has very cold winters and very hot summers. Plants found in this region include white/black spruce, white birch, jack pine, etc. Animals found here are chipmunks, mourning doves, cardinals, etc.

Mount Vesuvius developed inside the caldera of an older volcano. This volcano was known as Monte Somma. Monte Somma became active around 400,000 years ago. Only the northern side of Monte Somma is left, creating a wall-like ridge around the northern edge of Mount Vesuvius. This feature can be observed today at the site of Mount Vesuvius. The development of Vesuvius produced a volcanic complex consisting of the two volcanoes. (De Boer and Sanders, 2002)