Kyzashu Fm
Period:
Ordovician
Age Interval:
Early Ordovician (O2-3?), T1
Province:
East Tajik (NE Pamir)
Type Locality and Naming
Includes in Turzguny-Terezki thrust sheet
Synonym: Kyza-Shuy formation, Кызашуйская свита, Kyzashu Fm
Reference section:
Lithology and Thickness
The Kyzashu Fm (Кызашуйская свита) (700 m) consists of colorful sandstones, claystones, and slates with interlayers of limestones and meta-diabases.
Lithology Pattern:
Sandy_claystone
Relationships and Distribution
Lower contact
Conformable overlying of the Toutash Fm sediments.
Upper contact
The contact with the overlying Chelokteke Fm (челоктекинской свитой) is also conformable.
Regional extent
In the Northern Pamir, it is spread in the southeastern part of the Sarykol district.
GeoJSON
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Fossils
Age
The Early Ordovician age of the formation is determined conditionally based on the conformable overlying of the Totash formation sediments.
Age Span:
Beginning stage:
Tremadocian
Fraction up in beginning stage:
0.2
Beginning date (Ma):
484.90
Ending stage:
Floian
Fraction up in the ending stage:
1.0
Ending date (Ma):
471.26
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracted from Rutte, D., L. Ratschbacher, S. Schneider, K. Stübner, M. A. Stearns, M. A. Gulzar, and B. R. Hacker (2017), Building the Pamir-Tibetan Plateau—Crustal stacking, extensional collapse, and lateral extrusion in the Central Pamir: 1. Geometry and kinematics, Tectonics, 36, 342–384, doi:10.1002/2016TC004293.