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Egyptian Pyramid Construction Techniques
The construction of the Egyptian pyramids can be explained with well-established scientific facts; however, there are some aspects that even today are considered controversial hypotheses. The construction techniques used seem to have developed over time; later pyramids were not constructed in the same way as earlier ones. It is believed that huge stones were carved from quarries with copper chisels, and these blocks were then dragged and lifted into position. Disagreements chiefly concern the methods used to move and place the stones. In addition to the many unresolved arguments about the construction techniques, there have been disagreements as to the kind of workforce used. The Greeks, many years after the event, believed that the pyramids were built by slave labour. Archaeologists now believe that the Great Pyramid of Giza (at least) was built by tens of thousands of skilled workers who camped near the pyramids and worked for a salary or as a form of tax payment (levy) until t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strabo
Strabo''Strabo'' (meaning "squinty", as in strabismus) was a term employed by the Romans for anyone whose eyes were distorted or deformed. The father of Pompey was called "Gnaeus Pompeius Strabo, Pompeius Strabo". A native of Sicily so clear-sighted that he could see things at great distance as if they were nearby was also called "Strabo". (; ''Strábōn''; 64 or 63 BC) was an ancient Greece, ancient Greek geographer who lived in Anatolia, Asia Minor during the transitional period of the Roman Republic into the Roman Empire. He is best known for his work ''Geographica'', which presented a descriptive history of people and places from different regions of the world known during his lifetime. Additionally, Strabo authored historical works, but only fragments and quotations of these survive in the writings of other authors. Early life Strabo was born to an affluent family from Amasya, Amaseia in Kingdom of Pontus, Pontus in around 64BC. His family had been involved in politics s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolerite
Diabase (), also called dolerite () or microgabbro, is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine-grained to aphanitic chilled margins which may contain tachylite (dark mafic glass). ''Diabase'' is the preferred name in North America, while ''dolerite'' is the preferred name in the rest of the English-speaking world, where sometimes the name ''diabase'' refers to altered dolerites and basalts. Some geologists prefer to avoid confusion by using the name ''microgabbro''. The name ''diabase'' comes from the French , and ultimately from the Greek 'act of crossing over, transition', whereas the name ''dolerite'' comes from the French , from the Greek 'deceitful, deceptive', because it was easily confused with diorite. Petrography Diabase normally has a fine but visible texture of euhedral lath-shaped plagioclase crystals (62%) set in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Wood Problem
The old wood effect or old wood problem is a pitfall encountered in the archaeological technique of radiocarbon dating. A sample will provide misleading or confusing results if materials of different ages are deposited in the same context. Stratification is not always clear-cut in practice. In the case of dating megalithic tombs, indirect evidence for the age of the tomb must always be obtained, because stone (or the time of moving a stone) cannot be dated. When a number of objects are recovered from one deposit, the ''terminus post quem'' is based on the dating from the 'youngest' find. Even though other items in the same stratum indicate earlier dates, they may have been deposited at the same time. The deposit must be as young, or younger than the youngest object it contains. Thus excavators look to post holes, pits, or find spots under the orthostats for clues to construction dates. The possibility that something (organic) was already in situ must always be considered, especia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dahshur
DahshurAlso transliterated ''Dahshour'' (in English often called ''Dashur''; ' ) is an ancient Egyptian pyramid complex and necropolis and shares the name of the nearby village of Manshiyyat Dahshur () in markaz Badrashin, Giza Governorate, Giza. Dahshur is listed as a UNESCO World Heritage Site, and is located on the Western Desert (Egypt), Western Desert plateau at the edge of the cultivated plain, and along with the pyramid complexes at Saqqara, Abusir, and Giza pyramid complex, Giza, to its north, forms the Memphite Necropolis, pyramid fields of the ancient capital city of Memphis, Egypt, Memphis. It is known chiefly for several pyramids, mainly Sneferu, Sneferu's Bent Pyramid and the Red Pyramid, which are among the oldest, largest and best preserved in Egypt, built from 2613 to 2589 BC. Pyramids The Dahshur pyramids were an extremely important learning experience for the Egyptians. It provided them with the knowledge and know-how to transition from step-sided pyramids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bent Pyramid
The Bent Pyramid is an ancient Egyptian pyramid located at the royal necropolis of Dahshur, approximately south of Cairo, built under the Old Kingdom King Sneferu. A unique example of early pyramid development in Ancient Egypt, Egypt, this was the second of four pyramids built by Sneferu. The Bent Pyramid rises from the desert at a 54-degree inclination, but the top section (above ) is built at the shallower angle of 43 degrees, lending the pyramid a visibly "bent" appearance. Overview Archaeologists now believe that the Bent Pyramid represents a change from the Step pyramid, step-sided pyramids of before to smooth-sided Pyramid, pyramids. It has been suggested that due to the steepness of the original angle of inclination the structure may have begun to show signs of instability during construction, forcing the builders to adopt a shallower angle to avert the structure's collapse. This theory appears to be born out by the fact that the adjacent Red Pyramid, built immediately ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyramid Of Menkaure
The pyramid of Menkaure is the smallest of the three main pyramids of the Giza pyramid complex, located on the Giza Plateau in the southwestern outskirts of Cairo, Egypt. It is thought to have been built to serve as the tomb of the Menkaure , Fourth Dynasty King Menkaure. Size and construction Menkaure's pyramid had an original height of , and was the smallest of the three major pyramids at the Giza Necropolis. It now stands at tall with a base of . Its angle of incline is approximately 51°20′25″. It was constructed of limestone and Aswan granite. The upper portion was cased in the normal manner with Tura (Egypt), Tura limestone. The construction of the outer casing of the pyramid was halted at sixteen to eighteen layers of granite following Menkaure's death, only seven of which remain today due to vandalism and erosion. Part of the granite was left in the rough. The descending passage to lower burial chamber is in the 'large apartment' floor, probably original hidden by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portcullis
A portcullis () is a heavy, vertically closing gate typically found in medieval fortifications. It consists of a latticed Grille (architecture), grille made of wood and/or metal, which slides down grooves inset within each jamb of the gateway. Usage Portcullises fortified the entrances to many medieval castles, securely closing them off during times of attack or siege. Every portcullis was mounted in vertical grooves in the walls of the castle and could be raised or lowered quickly by using chains or ropes attached to an internal winch. Portcullises had an advantage over standard gates in that they could be closed immediately at a time of crisis by a single guard. Two portcullises to the main Gate, entrance would often be used. The one closer to the inside would be closed first, and then the one further away. This was used to trap enemies, and burning wood or fire-heated sand would usually be dropped onto them from murder-holes or the roof. Early thermal weapons#Hot oil, Hot oi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aswan
Aswan (, also ; ) is a city in Southern Egypt, and is the capital of the Aswan Governorate. Aswan is a busy market and tourist centre located just north of the Aswan Dam on the east bank of the Nile at the first cataract. The modern city has expanded and includes the formerly separate community on the island of Elephantine. Aswan includes five monuments within the UNESCO World Heritage Site of the Nubian Monuments from Abu Simbel to Philae; these are the Old and Middle Kingdom tombs of Qubbet el-Hawa, the town of Elephantine, the stone quarries and Unfinished Obelisk, the Monastery of St. Simeon and the Fatimid Cemetery. The city's Nubian Museum is an important archaeological center, containing finds from the International Campaign to Save the Monuments of Nubia before the Aswan Dam flooded all of Lower Nubia. The city is part of the UNESCO Creative Cities Network in the category of craft and folk art. Aswan joined the UNESCO Global Network of Learning Cities in 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mokattam Formation
The Mokattam Formation is a Eocene, Middle Eocene-aged geological formation in northern Egypt. Consisting of Nummulite, nummulitic marine limestone outcropping across the Mokattam, Mokattam Hills, it has been extensively quarried from Ancient Egypt to the present day, and represents the source material for most of the famous archeological sites of Greater Cairo, most notably the Giza pyramid complex, the Great Sphinx of Giza, Great Sphinx, and much of Islamic Cairo, Historic Cairo. The age of the formation is thought to span from the late Lutetian to the Bartonian, depending on the Geologic member, member (Building Stone or Giushi). However, some authors treat the Giushi Member as its own geologic formation, which would restrict the Mokattam to just the Lutetian. Numerous fossil fishes are known from this formation. Sirenian bones have been reported. This formation is the Type (biology), type locality of the early whales ''Protocetus atavus'', and the sirenians Eotheroides, ''Eoth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes from the Ancient Greek (''Ēṓs'', 'Eos, Dawn') and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch.See: *Letter from William Whewell to Charles Lyell dated 31 January 1831 in: * From p. 55: "The period next antecedent we shall call Eocene, from ήως, aurora, and χαινος, recens, because the extremely small proportion of living species contained in these strata, indicates what may be considered the first commencement, or ''dawn'', of the existing state of the animate creation." The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isoto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
