national park has complex rocks that are subsided in two seas hundreds of millions of years ago. Fossil data from the mid to Upper Cretaceous period predicts the sequence of rock strata in Big Bend National Park to be from bottom to top: limestone‚ shale and clay‚ limestone again‚ and sandstone and clay. The earliest layer was deposited in the relatively deep marine environment‚ then the ocean regressed to produce the next layer‚ then transgressed to produce the last. Different types of sediments are associated
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For the most part independent Egyptologists claim weathering is largely the result of precipitation. Given that Egypt has remained bone dry for the past 5‚500 years they conclude weathering must have occurred during what is called the African Humid Period. Which occurred some 5‚500 to about 16‚000 years ago when Egypt and all of Northern Africa was a green environment. The problem is there is no evidence of any civilization capable of building anything like the Sphinx at that time. Precipitation
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AIM: To carry out a lab experiment to decompose a carbonate using heat‚ also to carry out appropriate tests for the formation of products as a result of this decomposition. DISSCUSION: Carbonates are decomposed by heat into the corresponding oxides and carbon dioxide. The temperature of decomposition depends upon the activity of the metal; that is to say‚ the more active the metal‚ the more stable is the carbonate. Thus‚ the carbonates of sodium and potassium are stable at the highest temperature
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Introduction In order to determine the content of calcium and magnesium in an unknown sample of limestone‚ the utilization of atomic absorption spectrophotometry can help in deciphering the unknown concentrations of each molecule in the limestone sample. Atomic absorption spectrophotometry‚ emits radiation of the correct frequency that is passed through a flame and the intensity of the transmitted radiation is measured¹.The calcium concentration or ppm can be measured using the absorbance of the
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RESOURCES Why farmers sometimes need to change the pH of soil A healthy‚ productive farm is created from the ground up. The fertility‚ structure and biological activity of your soil are the keys to raising successful crops. Great soil grows great plants with increased vigour and pest tolerance‚ not to mention maximized yields. There’s a lot to know about your soil for sure‚ but the most critical measurement is its pH. What is pH? Represented on a scale of 0 to 14‚ pH is the measurement of the
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from Precambrian to Miocene i.e from oldest to youngest on the geological time scale form 542 million years to latest. Luckily for geoscientists all of them are exposed in different parts of the country. Lithologically they constitute sandstone‚ limestone‚ shale and mixed lithologies of them all. These rocks are exposed all along the mountain ranges from Islamabad in north to Karachi in the south. Igneous rocks are exposed north of Peshawar or only at Nagarparker in the southeastern corner of the
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The History of Batu Caves The Batu Caves is all made up of limestone‚ as we can see when we are inside the cave or even driving on the highway crossing Batu Caves. The limestone is said to be around 400 million years old the limestone forming Batu Caves is. Some of the cave entrances were used as shelters by the native people. Batu Caves became famous only after the limestone hills were recorded by colonial authorities including Daly and Syers as well as American Naturalist‚ William Hornaday in
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have been created somewhere else due to the fact that the Venus of Willendorf was created from a type of oolitic limestone that is not found in the region (L. C. E. Witcombe).The interesting sculpture’s characteristics are remarkable. The approximate measurement of the statuette is eleven centimeters in height and four centimeters in width. The masterpiece was created out of yellow limestone as well as tinted red by traces of ochre. When someone looks at the statuette‚ they see a short female as well
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According the PBS Nova program documentary‚ Riddles of the Sphinx‚ the statue Sphinx is the largest statue in Egypt‚ which is almost 240 feet long that is almost the same length of a football field and 70 feet tall that the height is similar to the White House. It has a lion body with a human’s face. The lion figured body symbolizes the king pharaoh’s identifies‚ himself with the lion to shows his power‚ to express his power. Before I watch the documentary‚ I did not know why the Sphinx’s head was
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This formation consists of fossiliferous limestones and dolomites. The Winnipegosis was deposited in a reef setting and it is a productive hydrocarbon bed in parts of the basin. The Prairie Evaporite overlies the Winnipegosis. The Prairie is a thick stack of salt and anhydrites. Salt dissolution
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