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Correlations

North Pacific AKSR-NASR Anadyr-Koryak Verkhoyansk-Chukotka Okhotsk-Chukotka N. Alaska Yukon Chignik
Phytostratigraphy     Images of fossils characteristic of the Type Taphoflora

 

Chignik Subregion

The Chignik Subregion, insignificant in area, existed from the Santonian or Campanian to the end of the Paleocene and corresponded to a coastal lowland periodically flooded by sea resulting in a succession of coastal marine, continental terrigenous and coaliferous sediments.

Two floristic assemblages of similar composition are known from the middle and upper parts of the Chignik Formation (Hollick, 1930), and the lower part yields Santonian–Campanian marine mollusc remains.

The flora of the Chignik area is dominated by angiosperms with comparatively small and narrow leaves. It is lacking large-leaved platanoids and contains rare ferns along with infrequent gymnosperms. In general, the Chignik Flora is comparable with the Barykov flora of the AKSR, but lacks Macclintockia.

 

 

  

Map of paleogeographic subregions in the North Pacific Region

Interactive map Hotspot linking to Okhotsk-Chukotka Subregion page Hotspot linking to Okhotsk-Chukotka Subregion page Hotspot linking to Anadyr-Koryak Subregion page Hotspot linking to Northern Alaska Subregion page Hotspot linking to Yukon-Koyukuk Subregion page Hotspot linking to ChignikSubregion page showing the main paleobotanical-paleogeographic subregions in Northeastern Russia.

 

 

 

 

 

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Hotspot linking to Northern Alaska Correlation Chart Hotspot linking to description of the Late Sagwon phase of floral evolution in Alaska Hotspot linking to description of the Early Sagwon phase of floral evolution in Alaska Hotspot linking to description of the LateKogosukruk phase of floral evolution in Alaska Hotspot linking to description of the Early Kogosukruk phase of floral evolution in Alaska Hotspot linking to description of the Tuluvak phase of floral evolution in Alaska Hotspot linking to description of the Kaolak phase of floral evolution in Alaska Hotspot linking to description of the Niakogon phase of floral evolution in Alaska Hotspot linking to description of the Kukpowruk phase of floral evolution in Alaska Hotspot linking to description of the Koryak phase of floral evolution in the AKSR Hotspot linking to description of the Gornorechenian phase of floral evolution in the AKSR Hotspot linking to description of the Barykov phase of floral evolutionan in the AKSR Hotspot linking to description of the Kaivayam phase of floral evolution in the AKSR Hotspot linking to description of the Penzhina phase of floral evolution in the AKSR Hotspot linking to description of the Grebenka phase of floral evolution in the AKSR Hotspot linking to description of the Early Ginter phase of floral evolution in the AKSR Hotspot linking to the correlation chart for the AKSR