1. Fossil Fuels
The great basin wilds of west central Nevada are rich in productive fossil plant localities. While probably not as well known as other plant fossil localities in Washington, Oregon, Wyoming, and Montana, Aldrich hill, in Yerington Nevada, continue to yield many excellently preserved paleobotanical remains. One of the most interesting and rewarding leaf and seed yielding areas are near the center of the Aldrich Station Formation, at Aldrich Hill.
Geologists have collected some 35 species of ancient plant life from the Middle Miocene Aldrich Station Formation; a geologic rock unit dated roughly 13 to 12.5 million years old. Among the many fossil plant remains found at Aldrich Hill, are complete carbonized leaves from an Evergreen live Oak, in addition to many conifer winged seeds and even giant sequoia foliage. All of the fossil plants are exposed on the north side of the rock unit. Out stations of this plant bearing strata can be examined along the main wash, which trends generally east to west across the open side. Other exposures can be also found in the minor erosion gullies that jut out through the north side. .
If a microscope if is available, you can find remains of an especially prolific fossil type, the diatom. This microscopic single celled plant lived in the rocks of the middle to late Miocene age, roughly 17 to 5 million yeas ago. The scientific extraction of diatoms for paleobotanical study is a dangerous operation, involving powerful acids. Most diatoms form Aldrich Hill resembles minute boxcars and discs. .
The sedimentary rocks at Aldrich Hill provide proof that roughly 13 to 12.5 million years ago an extensive giant Sequoia forest reigned over what is presently an arid great basin of sage and pinyon pine. Along with these great trees, grew such plant varieties as brewer spruce white fir, western hemlock, evergreen live oak, a scene that would resemble the modern day humid western slopes of the Sierra Nevada's.
There are three major fossil fuels: Coal, oil and natural gas. ... Carbon is the major element in fossil fuels. We obtain energy from fossil fuels by burning them. Coal is the most abundant fossil fuel in the U.S. ... Oil is another important fossil fuel. ...
What are fossil fuels and where do they come from? By definition fossil fuels are energy rich substances that have formed from long-buried plants and (micro) organisms; hence the name fossil fuel. ... Fossil fuel consumption and depletion Fossil fuels are largely burned to produce energy. ... The use of fossil fuels or other substances derived from fossil fuels have dire consequences. ... In 2001 fossil fuel fired power plants (power plants that run on the use of fossil fuels) produced 64 percent of the world's electrical power. ...
It was an ideal state for the formation of fossil fuels. ... For this reason, fossil fuels do not belong only to the past. ... Fossil fuels are the major sources of energy in the world. ... Fossil fuels have been around for many years. ... Fossil fuels generate huge amounts of power per unit at a time. ...
For many decades, fossil fuels have always been considered a reliable and well-developed source of energy; they had offered the world the possibility to evolve in terms of transportation, industry and technology. Moreover, the energy systems and structures established in order to feed the cities all around the world are exclusively designed for the usage of fossil fuels. ... According to what we said previously, it ´s important to clarify fossil fuels are very unique substances to be found in earth surface, it takes million of years to be form substances like petroleum, for instance, the cont...
Fossil fuels were always available and they were fairly cheap to purchase. ... Not only are the fossil fuels going to be extinct before long they are also harmful to the Earth. Burning fossil fuels is a major source of anthropogenic CO2, a major heat-trapping greenhouse has. ... (Harper pg 227) Alternative fossil fuel choices are increasing more and more throughout the years. ... About 85% of the energy comes from Fossil Fuels nuclear power provides the last 8%. ...
All other energy sources are known as fossil fuels. A fossil fuel is, for example, oil or coal. ... Also the reservoir of fossil fuels in limited. ... Fossil fuels are burned in power plants. ... On the other hand many people will also lose their jobs if the fossil fuels are depleted. ...
Is it a good idea to replace fossil fuel now or science fiction due to high cost and technological difficulties? ... However, states have the liberty to choose to implement and use renewable energy rather than the common fossil fuel. ... Most countries have notice that they cannot depend on fossil fuel energy forever. ... The old generators consume large quantities of fossil fuel and have to be turn-on all the time. ... If the old generators are shut-down, it will take time to be turn-on and it will consume a lot of fossil fuel in the process. ...
Various sites in East Africa have produced a remarkable collection of Australopithecines fossils that can be dated back 3.9 million years. Because they are the oldest hominid fossils, Africa is called "the cradle of mankind." ... In 1976 the British anthropologist Mary Leakey discovered at Laetoli, in northern Tanzania, the fossil jaws and teeth of eight adults and three children, between 3.35 and 3.75 million years old. ... More importantly, these fossil remains were found in association with crude tools - rocks cracked and flaked into shapes used to cut meat killed by lions and leopards. ...