Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Paleolithic period

In literature, the oldest ceramic objects are said to be anywhere between 26,000 and 15,000 years old. They date from the Stone Age, or more precise from the period which is called the Upper Paleolithic Period (figure 2.2)... [Pg.366]

The use of paint dates to prehistoric art, mainly about 35,000 years ago, when the long-skull Cro-Magnon people of the Paleolithic period made cave paintings. They were restricted to only a few pigments of local colors—earth tones of yellow, red, black, brown, and white—derived from plants, animals, and minerals and mixed with animal fat to make the first paints. These paints required a binder to adhere them to cave walls Chemists think that Cro-Magnon artists used saliva Today, artists are attempting to duplicate the paints used in these cave paintings. [Pg.90]

In most areas of the wadi floor and the low desert area, the Nubian formation is covered by an average of 5-7 m of Pleistocene Nile silts (9). These older Nile sediments represent different episodes in the evolution of the Nile River (10-13), The oldest Nile sediments (called Protonile) in the area, exposed at high (about 125 m above sea level) Pleistocene terraces, were deposited during the Lower to Middle Paleolithic period (10). [Pg.40]

Estimated -3 and w-6 Fatty Acid Intake in the Late Paleolithic Period (g/d)... [Pg.12]

Fig. 6.7 A baton de commandant of reindeer antler from the Upper Paleolithic period in France... Fig. 6.7 A baton de commandant of reindeer antler from the Upper Paleolithic period in France...
Another important ceramic during the Stone Age was obsidian, a dark gray natural glass precipitated from volcanic lava. Like other glasses it exhibits conchoidal fracture and was used for tools and weapons back into the Paleolithic period. [Pg.17]

The Old Stone Age, or Paleolithic Age, extends to about 8000 bce. Paleolithic humans were food-gathering nomads who learned to use language, control fire, and fashion tools of stone and bone. There is evidence that during the upper Paleolithic period people cooked food, which could easily be considered the first chemical process. Cooking uses heat to break down the chemical networks in vegetable and muscle fiber and accomplishes a sort of predigestion that takes some of the burden off teeth, stomach, and intestine. [Pg.5]


See other pages where Paleolithic period is mentioned: [Pg.2]    [Pg.20]    [Pg.3]    [Pg.4]    [Pg.6]    [Pg.9]    [Pg.138]    [Pg.138]    [Pg.140]    [Pg.6]    [Pg.17]    [Pg.24]    [Pg.394]    [Pg.19]    [Pg.26]    [Pg.394]   
See also in sourсe #XX -- [ Pg.140 ]




SEARCH



A baton de commandant of reindeer antler from the Upper Paleolithic period in France

Upper Paleolithic Period

© 2024 chempedia.info