Sedimentary rocks essay

There are lots of ways to guesstimate ages, and geologists knew the earth was old a long time ago and I might add that they were mostly Christian creationist geologists. But they didn't know how old.

Sedimentary rocks essay

It is an ancient construction that has baffled researchers ever since its discovery and until today, no one has been able to accurately date the Sphinx, since there are no written records or mentions in the past about it.

Now, two Ukrainian researchers have proposed a new provocative theory where the two scientists propose that the Great Sphinx of Egypt is around Sedimentary rocks essay, years old. A Revolutionary theory that is backed up by science.

The authors of this paper are scientists Manichev Vjacheslav I. According to Manichev and Parkhomenko: Geological approach in connection to other scientific-natural methods permits to answer the question about the relative age of the Sphinx.

The conducted visual investigation of the Sphinx allowed the conclusion about the important role of water from large water bodies which partially flooded the monument with formation of wave-cut hollows on its vertical walls. Genetic resemblance of the compared erosion forms and the geological structure and Sedimentary rocks essay composition of sedimentary rock complexes lead to a conclusion that the decisive factor of destruction of the historic monument is the wave energy rather than sand abrasion in Eolian process.

Voluminous geological literature confirms the fact of existence of long-living fresh-water lakes in various periods of the Quaternary from the Lower Pleistocene to the Holocene. These lakes were distributed in the territories adjacent to the Nile.

The absolute mark of the upper large erosion hollow of the Sphinx corresponds to the level of water surface which took place in the Early Pleistocene. Manichev and Parkhomenko focus on the deteriorated aspect of the body of the Sphinx, leaving aside the erosive features where the Sphinx is located, which had been studied previously by Schoch.

Ukrainian scholars focused on the undulating terrain of the Sphinx which displays the mysterious pattern. Mainstream scientists offer explanations for this sharp feature and state that it is based on the abrasive effect of the wind and sand, the undulations were formed because the harder layers of rock are better at withstanding the erosions while the softer layers would have been more affected, forming voids.

However, as noted Manichev and Parkhomenko, this argument does not explain why the front of the head of the Sphinx lacks such features. In regards to the argument made by Schoch about the heavy rain period which occurred around 13, BC, the Ukrainian scientists recognized Schoch hypothesis partially suggesting that the erosive features of the Sphinx go further back than Manichev and Parkhomenko argue is that the mountainous and coastal areas of the Caucasus and Crimea, which they know well, have a type of wind erosion that differs morphologically to the erosive features noted on the Sphinx.

Essentially, they argue that such wind erosion has a very soft effect, regardless of the geological composition of the rocks. The western wall of the Sphinx enclosure, showing erosion consistently along its length.

Courtesy and copyright of Colin Reader. Most natural forms of weathering are of smoothed character, independent of lithological composition of the rocks. Specialists-geologists, who work in the field of sea-coast geomorphology, know such forms of relief as wave-cut hollows Morskaya Geomorfologiya, They can be one- and multi-storey.

They are arranged horizontally to the sea water surface, if the coast makes a vertical wall cliff. Especially deep wave-cut hollows are formed in precipitous cliffs built by the strata of carbonaceous rocks.

Such forms of the coast relief are well-known and studied in detail on the Black-Sea coast of the Caucasus and Crimea Popov, ; Zenkovich, General model of formation of the wave-cut hollows in the rocks of the Caucasian flysch is given by Popov; Fig.

In dynamics of the process of wave-cut hollows formation one can notice such a characteristic feature that the wave energy is directed to the rock stratum at the level of water surface. Besides, both saline and fresh water can dissolve the rocks. This mechanism is the impact of waves on the rocks of the coast.

Basically, this could produce, in a period of thousands of years the formation of one or more layers of ripples, a fact that is clearly visible, for example, on the shores of the Black Sea.

This process, which acts horizontally that is, when the waves hit the rock up to the surfacewill produce a wear or dissolution of the rock. The fact is that the observation of these cavities in the Great Sphinx made the Ukranian scientists think that this great monument could have been affected by above said process in the context of immersion in large bodies of water, not the regular flooding of the Nile.

Manichev and Parkhomenko suggest that the geological composition of the body of the Sphinx is a sequence of layers composed of limestone with small interlayers of clays. Manichev and Parkhomenko explain that these rocks possess different degree of resistance to the water effect and say that if the hollows formation were due to sand abrasion only, the hollows had to correspond to the strata of a certain lithological composition.

They suggest that the Great Sphinx hollows are formed in fact within several strata, or occupy some part of the stratum of homogeneous composition. The Back of the Great Sphinx of Egypt Manichev and Parkhomenko firmly believe that the Sphinx had to be submerged for a long time under water and, to support this hypothesis, they point towards existing literature of geological studies of the Giza Plateau.

According to these studies at the end of the Pliocene geologic period between 5. This led to formation of lacustrine deposits which are at the mark of m above the present level of the Mediterranean Sea. According to Manichev and Parkhomenko, it is the sea level during the Calabrian phase which is the closest to the present mark with the highest GES hollow at its level.Sedimentary Rocks Sedimentary rocks are formed from layers of deposits laid down in lakes or seas.

Over millions of years the layers of sediment build up resulting in the weight pressing downwards, creating high pressure, which squeezes the water out.

Major Problems from the Start

The real heart of the age-of-the-earth debate (if "debate" is the right word) is always radiometric dating. There are lots of ways to guesstimate ages, and geologists knew the earth was old a long time ago (and I might add that they were mostly Christian creationist geologists).

But they didn't know how ashio-midori.cometric dating actually allows the measurement of absolute ages, and so it is. Sedimentary Rocks Essay - Sedimentary Rocks Sedimentary rocks are formed from layers of deposits laid down in lakes or seas.

Over millions of years the layers of sediment build up resulting in the weight pressing downwards, creating high pressure, which squeezes the water out. Geology.

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Sedimentary rocks essay

This exam was updated July 30, and includes new content and content outlines reviewed by the American Council on Education (ACE). ABOUT THE AUTHORS Lorence G.

Collins is a retired professor of geology from California State University, Northridge. He was educated at the University of Illinois and has special interests in the origin of granite and ore deposits.

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