Social science section 2 Flashcards
How many years ago did the holocene begin?
11,700 years ago
The earliest fossil record of homo sapiens dates back to
300,000 years ago
Approximately what was the human population before the holocene?
Less than ten million
Which epoch preceded the holocene?
The pleistocene epoch, characterized by cycles of glaciers growing and receding, and at times covering vast portions of the Earth.
The last glacial maximum (LGM)
Occurred around 20,000 years ago. In this time period, much of Europe, North America, and Asia were covered in ice.
Younger Dryas period (12,900-11,700 years ago)
Warming caused by solar cycles created a massive glacial meltwater event, cooling ocean temperatures and reversing global warming trends for roughly a millennium.
Interglacial period
A warm period between ice ages. The holocene is an interglacial period.
The middle holocene is also known as
the northgrippian stage/age
The early holocene is also known as
the greenlandian stage/age
the late holocene is also known as
meghalayan stage/age
The classification of the early holocene as the “Greenlandian stage” refers to
An ice core in Greenland, NGRIP2, which bears evidence of the onset of the holocene.
What event marks the end of the early holocene and the beginning of the middle holocene?
A meltwater event in Canada caused the collapse of the Laurentide Ice Sheet
What was the beginning and end date of the middle holocene?
Began around 8,236 years ago and ended 4,250 years ago
Which two ages of human history are included in the middle holocene?
the stone age and the bronze age
Which notable human civilization emerged in the middle holocene?
Mesopotamia