Kalpintake Formation Near Kalpin, Western Xinjiang Province (Silurian of China)

Where: Xinjiang, China (40.5° N, 79.0° E: paleocoordinates 37.1° S, 109.3° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Kalpintake Formation, Rhuddanian (443.4 - 440.8 Ma)

• Except where otherwise stated, ref. 7624 uses Lower Silurian as equivalent to Llandovery, Middle Silurian as equivalent to Wenlock, and Upper Silurian as equivalent to Ludlow plus Pridoli. Age of this formation based on contained graptolites.

• formation-level stratigraphic resolution

Environment/lithology: marine; gray, green, sandy shale and green, yellow, sandy siltstone

• Correlation chart indicates BA 3 position.
• "The strata are about 445 m thick, and consist of gray-green, sandy shale, shale, and yellow-green, quartzitic siltstone...Ripple marks and cross-bedding occur in the upper part of the section in the quartzitic siltstone. ABout 1 m of red sandstone occurs in the bottom of the section."

Primary reference: E.-z. Mu, A. J. Boucot, X. Chen and J.-y. Rong. 1986. Correlation of the Silurian rocks of China. In A. J. Boucot and W. B. N. Berry (eds.), Geological Society of America Special Paper 202:1-80 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 27765: authorized by Michael Foote, entered by Michael Foote on 08.01.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

 Graptoloidea - Climacograptidae
 Graptoloidea - Diplograptidae
 Graptoloidea - Neodiplograptidae
"Glyptograptus persculptus" = Metabolograptus persculptus
"Glyptograptus persculptus" = Metabolograptus persculptus Elles and Wood 1907 graptolite
var. nov.
 Graptoloidea - Retiolitidae
Glyptograptus cf. tamariscus Nicholson 1868 graptolite
 Graptoloidea - Dimorphograptidae
Akidograptus sp. graptolite
 Graptoloidea - Normalograptidae
"Climacograptus angustus" = Normalograptus angustus Perner 1895 graptolite
Rhaphidograptus kalpinensis graptolite
corrected from "Raphidograptus"
Rhaphidograptus subashensis graptolite
corrected from "Raphidograptus"