Home Multi-Country Search About Admin Login
Cenozoic
Cretaceous
Jurassic
Triassic
Permian
Carboniferous
Devonian
Silurian
Ordovician
Cambrian
Neoproterozoic
Mesoproterozoic

Search by
Select Region(s) to search
Hold Ctrl (Windows/Linux) or Command (Mac) to select multiple
Xinganling Gr

Xinganling Gr

Period: 
Jurassic

Age Interval: 
Late Jurassic, (Cret18, Cret20; Cret17d, TJ6b-TJ9)


Province: 
Inner Mongolia

Type Locality and Naming

Erlian Basin, Hailer Basin, etc. Type area is Da Xing’anling close to Bokrtu, Hulun Buir Banner, Inner Mongolia Autonomous Region. Named by Ning Qisheng, Tang Kedong, Cao Congzhou, Zhang Mengruo, 1959, Regional Geology and Mineral Resources Formation of Da Xing’anling and Its Adjacent Area, Regional Geology of Da Xing’anling, Beijing: Geological Publishing House. In Heilongjiang Province, it is an upward succession of the Longjiang Fm, Jiufengshan Fm and Ganhe Fm. In Inner Mongolia Autonomous Region, it is an upward succession of Manketou’ebo Fm, Manitu Fm and Baiyingaolao Fm. In Erlian Basin, it is an upward succession of Chagannouer Fm, Daotenouer Fm, and Bulagenhada Fm. In Hailar Basin (Cret column 18), it is apparently used for the upward succession of the Tamulangou Fm (upper Jurassic), Tongbomiao Fm, Nantun Fm, and Yilikede Fm (the Yilikede is apparently the upper member of Nantun in revised stratigraphy of Zheng Ji et al. (2020) for the Hailar Basin), which would imply an upward extension through the Early Cretaceous.

Synonym: Xing'anling Gr, Xing'anling Volcanic Group


Lithology and Thickness

Interbedded volcanic rocks, volcanic sedimentary rocks, claystone (lacustrine) and volcanic ash. See component formations. Total of 800 m. See individual formations.


Lithology Pattern: 
Volcanics


Relationships and Distribution

Lower contact

Disconformable on the early Bathonian Qiha Fm (lacustrine claystone; without volcanic ash) [Alantanhei Gr].

Upper contact

The Lower member of the Aershan Fm of earliest Cretaceous rests on the Jurassic strata (e.g., Hugejiletu Fm or the Xinganling Gr) with an angular unconformity (named as T11 in seismic reflection sections).

Regional extent


GeoJSON

null

Fossils

See individual formations.


Age 

In the Erlain Basin, Guo et al. (2019; Fig. 2; based on Guo et al., 2019) suggest 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 in the Erlian Basin is considered coeval with the Xinganling Gr in the Hailar Basin by Kosenko et al. (2021), therefore they placed into only the Barremian (and perhaps extending downward further into lower Cretaceous). They 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.See Additional Information – the use of Xinganling Gr is probably different between the Erlian and Hailar basins! For the moment, only the potential "radiometric-dated" Xinganling Gr age model of Late Jurassic is given here; and the Hailar equivalent is probably entirely Early Cretaceous!

Age Span: 

    Beginning stage: 
Callovian

    Fraction up in beginning stage: 
0.5

    Beginning date (Ma): 
163.41

    Ending stage: 
Kimmeridgian

    Fraction up in the ending stage: 
0.3

    Ending date (Ma):  
153.12

Depositional setting

Lacustrine with volcanic ash beds


Depositional pattern:  


Additional Information

– the use of Xinganling Gr is probably different between the Erlian and Hailar basins! For the moment, only the potential "radiometric-dated" Xinganling Gr age model of Late Jurassic is given here; and the Hailar equivalent is probably entirely Early Cretaceous!

Age span:

Beginning stage: Callovian

Fraction up in beginning stage: 0.5

Beginning date (Ma):

Ending stage: Kimmeridgian

Fraction up in ending stage: 0.3

Ending date (Ma):

Depositional setting:

Lacustrine with volcanic ash beds

Depositional-pattern:

Additional Information

"Note that two volcanic-sedimentary groups from two different sedimentary basins (Hailaer and Erlian basins) united different formations are mentioned as the Xing'anling Group in different publications. However, lithological composition and genesis of these volcanic-sedimentary groups is very similar. In our opinion, in future the revision of the nomenclature of the formations included in the volcanic-sedimentary groups is needed." (Kosenko et al., 2021)


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)