1. Study of Holocene environmental change is a focal point not only in the past but also in today.
2. Pliocene-Holocene Neotectonism has played a key role in formation of Tertiary oil and gas fields in Bohai Sea.
3. In the Holocene, the general climate in the source area was cool and dry and characterized by the plateau cold climate.
1. approximately the last 10,000 years
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