Dabeigou Formation
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The Dabeigou Formation (simplified Chinese: 大北沟组; traditional Chinese: 大北溝組; pinyin: Dàběigōu zǔ) is a palaeontological formation located in Hebei, China.[1] It dates from the mid Valanginian to Hauterivian age of the Cretaceous period, approximately 135 to 130 Ma.[2]
Quick Facts Type, Unit of ...
Dabeigou Formation | |
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Stratigraphic range: mid Valanginian-mid Hauterivian ~135–130 Ma | |
Type | Geological formation |
Unit of | Jehol Biota |
Sub-units | Numbered Members |
Underlies | Dadianzi & Yixian Formations |
Overlies | Zhangjiakou Formation |
Thickness | Varies, in Yushuxia section 220 metres (720 ft) |
Lithology | |
Primary | Sandstone, mudstone |
Other | Tuffite, conglomerate, siltstone |
Location | |
Coordinates | 41.7°N 116.4°E / 41.7; 116.4 |
Approximate paleocoordinates | 43.6°N 118.5°E / 43.6; 118.5 |
Region | Hebei |
Country | China |
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