Daotenouer Fm
Period:
Jurassic
Age Interval:
Oxfordian, (Cret17d, TJ6b)
Province:
Inner Mongolia
Type Locality and Naming
Lithology and Thickness
Dominated by dark-grey to greyish-purple basalts and andesites
Lithology Pattern:
Lava
Relationships and Distribution
Lower contact
Transitional from the underlying Chagannouer Fm.
Upper contact
Transitional upward into the overlying Bulagenhada Fm.
Regional extent
GeoJSON
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Fossils
Age
Guo et al. (2019; Fig. 2; based on Guo et al., 2019) suggest entire Xinganling Gr spans 163 to 153 Ma, based on U-Pb (LA-ICP-MS) dates; which they assign as Oxfordian to early Kimmeridgian. Using GTS2020, the span of this Group would be mid-Callovian through earliest-Kimmeridgian. However, the entire Xinganling Gr is placed into only the Barremian (and perhaps extending downward further into lower Cretaceous) by Kosenko et al. (2021), who did not reference Guo et al.'s study. Therefore, until this conflict is resolved, the age model for the Erlian Basin stratigraphy by Guo et al. (2019) is used here.Arbitary allocating each of the three formations in this Gr to sub-equal durations; therefore:
Age Span:
Beginning stage:
Oxfordian
Fraction up in beginning stage:
0.2
Beginning date (Ma):
160.18
Ending stage:
Oxfordian
Fraction up in the ending stage:
0.7
Ending date (Ma):
156.81
Depositional setting
Lacustrine with volcanic ash beds
Depositional pattern:
Additional Information
Compiler:
Guo, Z.X. et al. (2019, Early Cretaceous tectonostratigraphic evolution of the Erlian Basin, NE China, Marine and Petroleumm Geology, 110: 539-564)
Enhanced with Igor N. Kosenko, Jingeng Sha and Boris N. Shurygin (2021). Upper Mesozoic stratigraphy of Sikhote-Alin (Russian Far East) and northeastern China: Non-marine and marine correlations. Part 1: Upper Jurassic-Hauterivian AND 2. Barremian-Aptian. Cretaceous Research, 124: articles 104811 (https://doi.org/10.1016/j.cretres.2021.104811) AND 104812 (https://doi.org/10.1016/j.cretres.2021.104812)