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Tagling Formation
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Tagling Fm base reconstruction

Tagling Fm

Period: 
Jurassic

Age Interval: 
Hettangian-Toarcian (maybe through Callovian)


Province: 
NW Himalaya Zanskar-Spiti

Type Locality and Naming

Tagling Pass. [Original Publication: Stoliczka, F. 1865. Geological section across the Himalayan mountain range from Wangtu Bridge on the river Sutlej to Sungdeo with an account of formations in Spiti accompanied by a revision of all known fossils from that district. Memoirs of Geological Survey of India, 5: 153p]

Synonyms: Kioto Limestone Fm, Megalodon Limestone; Uppermost ca. 10 m = Ferruginous Oolite Fm (in some locations). [Note: this Fe-oolite is maintained as a separate formation in this lexicon to avoid confusion.]

[Figure: Zanskar-Spiti-Kumaun region location (provided by Om Bhargava)]


Lithology and Thickness

Limestone. Grayish-blue fine-grained ferruginous cherty and sandy limestone. ±500 m,


Lithology Pattern: 
Siliceous limestone


Relationships and Distribution

Lower contact

Lower contact with the Para Fm is conformable.

Upper contact

Disconformable contact with the overlying Spiti Fm.

Regional extent

Zanskar-Spiti and Himachal Pradesh to Kumaun-Garhwal region of Northwest Tethyan Himalaya


GeoJSON

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Fossils

Megalodon sp., Stephanoceras coronatum


Age 

Hettangian-Toarcian. However, elsewhere the classic " Ferruginous Oolite Fm" is sometimes considered to be a condensed late Bathonian-middle Callovian episode (e.g., Nepal Tethyan succession near Jomoson). Therefore, a hiatus spanning Aalenian-Bajocian-early Bathonian is implied by age span of this Taling Fm?

Age Span: 

    Beginning stage: 
Hettangian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
201.36

    Ending stage: 
Toarcian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
174.70

Depositional setting

Winnowed shelf edge to restricted platform edge (Bhargava, 2008)


Depositional pattern:  


Additional Information

Not available.


Compiler:  

O.N. Bhargava & Birendra Singh.