Dating sites in lahore usa

The Paleolithic is followed in Europe by the Mesolithic, although the date of the transition varies geographically by several thousand years.

dating sites in lahore usa-46

A major event is a general glacial excursion, termed a "glacial". During a glacial, the glacier experiences minor advances and retreats.

The minor excursion is a "stadial"; times between stadials are "interstadials".

The Pleistocene climate was characterized by repeated glacial cycles during which continental glaciers pushed to the 40th parallel in some places.

Four major glacial events have been identified, as well as many minor intervening events.

Humankind gradually evolved from early members of the genus Homo—such as Homo habilis, who used simple stone tools—into anatomically modern humans as well as behaviorally modern humans by the Upper Paleolithic.

During the end of the Paleolithic, specifically the Middle and or Upper Paleolithic, humans began to produce the earliest works of art and began to engage in religious and spiritual behavior such as burial and ritual.

Each glacial advance tied up huge volumes of water in continental ice sheets 1,500–3,000 m (4,900–9,800 ft) deep, resulting in temporary sea level drops of 100 m (330 ft) or more over the entire surface of the Earth.

During interglacial times, such as at present, drowned coastlines were common, mitigated by isostatic or other emergent motion of some regions. Antarctica was ice-bound throughout the Pleistocene and the preceding Pliocene.

South America became linked to North America through the Isthmus of Panama, bringing a nearly complete end to South America's distinctive marsupial fauna.

The formation of the isthmus had major consequences on global temperatures, because warm equatorial ocean currents were cut off, and the cold Arctic and Antarctic waters lowered temperatures in the now-isolated Atlantic Ocean.

In the northern hemisphere, many glaciers fused into one.

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