1. Explain why Earth and other planets were not solid when they formed during the beginning of the Precambrian, approximately 4,600 million years ago (MYA) The Precambrian period was also known as the Hadean and the reason why it was not solid yet was that the planets of the solar system were just starting to form and they were not even solid rocks yet they were just starting to form from dust particles. 2. What was this particular time period called? This particular period was called the…
are found in the Llano uplift region of central Texas, the most prolific Wilberns outcrops are to the west of the Llano uplift area (Bell and Barnes, 1972, p. 28). The Llano uplift area is a geologically complex region of central Texas (fig. 3). Precambrian metamorphic and plutonic igneous rocks mostly dominate the Llano region. The uplift brought Cambrian Wilberns rocks to the surface, which is where almost every study of the Wilberns is located (Barnes and Bell, 1977). The Llano uplift area…
drill has entered a hydrocarbon bearing formation. 3. The North American Cordillera is a mountainous region of Western North America. The North American Cordillera is the longest-lived orogenic belt know on earth. It spans time from the Precambrian to the Cenozoic. There is a lot of folding and faulting in the region and the faulting mainly consists of strike-slip faulting and extensional rifting. The Basin and Range province is a large part of the Cordillera. The Basin and…
was born in California in 1928 and attended the California Institute of Technology at the age of 16, completing a Geology bachelor's degree. He then took only one more year to complete his master’s at Caltech, his thesis being the petrology of Precambrian metamorphic rocks in New Mexico. Shoemaker then went on to work for the United States Geological Society (USGS) searching for deposits of uranium which eventually led him to nuclear testing…
However, fossil records of the multicellular organisms suggest slow diversification rate at Precambrian, moderate at Paleozoic and high to exponential diversification rate at Mesozoic and Cenozoic. According to Benton (1995), diversification is not a stochastic but continuous process and taxonomic group/clade addition and multiplication plays a major…
Grand Canyon “Beautiful doesn't begin to describe it. A flower is beautiful. But this is beautiful the way that a person is beautiful- terrifying with its jagged edges, yet seductive with its crevices that hide so many secrets.” (Jeri Smith-Ready, Requiem for the Devil) This quote explains how beautiful the Grand Canyon is perfectly I think. Let’s look past how breath taking the Grand Canyon is for a moment and dig deeper in how it really became to be interesting landform it is now. So let us…
Neotectonics in Australia. Abstract The cratons of the world that are located at a distance from plate boundaries are considered to be stable tectonically, but in real sense, they are subjected to regular disturbance that are less persistence and also of lesser magnitude than those that lies near plate boundaries, Nonetheless their manifestation can be seen in landscape. Neotectonics are post Miocene tectonic deformation on the earth surface. Its evidence takes expression in form of recent…
This essay on supercontinents was a tough piece to write about, but it was fun and I enjoyed writing about it. I had to think scientifically, but I also had to consider the audience on writing this paper. I had to go back and ask myself multiple times if the audience would understand this and be interested in reading this. I had to ask if this was too confusing, and if it was, what could I do to make it clearer and easier for the audience understand. This was probably the toughest essay out of…
Chapter One: The author grew up in Kenya, a place which developed his love of nature and all the flora and fauna within it and provided a chance for that love to grow. His parents were both passionate naturalists, especially his father. He was taught to love fossils because of his parents love for them. Because of being raised in the wild, he has always been drawn to it. When he was younger, he would sell bones to museums. This job helped him to prepare for his future specialty in…
Tukuyu-Karonga basin stratigraphy It is one of the basins in north and northeast of Lake Malawi and is useful in understanding the geology of the area; figure 2.3 shows the stratigraphy of the central, eastern and western region of the basin. Precambrian period contains metamorphic rocks while Neogene age contains muddy sandstone which are overlain by Songwe tuff which are in turn overlain by Karoo and clasts (Crossley, 1984).Quaternary age contains Chitimwe beds overlying Chiwondo bed as shown…