. Bulletin of the Natural Histort Museum. Geology series. 14 POPOV, COCKS AND NIKITIN. Fig. 1 Generalised map of the Chu-Ili Range and West Balkhash Region (including the southern part of Lake Balkhash), showing the boundaries of the Early Palaeozoic tectonofacies belts, mainly after Nikitin et al. (1991), and the position of the brachiopod localities discussed in the text: 1, Anderkenyn- Akchoku; 2, Kujandysai; 3, east side of Kopalysai River; 4, Buldubai-Akchoku Mountain; 5, Tesik River; 6, Burultas Valley; 7, south-east side of Karatal River near Sorbulak spring; 8, 7 km so
. Bulletin of the Natural Histort Museum. Geology series. 14 POPOV, COCKS AND NIKITIN. Fig. 1 Generalised map of the Chu-Ili Range and West Balkhash Region (including the southern part of Lake Balkhash), showing the boundaries of the Early Palaeozoic tectonofacies belts, mainly after Nikitin et al. (1991), and the position of the brachiopod localities discussed in the text: 1, Anderkenyn- Akchoku; 2, Kujandysai; 3, east side of Kopalysai River; 4, Buldubai-Akchoku Mountain; 5, Tesik River; 6, Burultas Valley; 7, south-east side of Karatal River near Sorbulak spring; 8, 7 km southwest of Karpkuduk Well, Kotnak Mountains. palaeogeography. Up until now, little assessment of the faunas contained within these tectonic plates has been made, particularly in relationship to contemporary faunas from other areas. One such plate is that forming the Chu-Ili Range, and termed here the Chu-Ili Plate (Fig. 1). Within the Chu-Ili Plate the successions have been known for some time ( Nikitin 1972, 1973). However, although a number of papers have been published on aspects of some of the contained Ordovician faunas, much remains to be done. A central formation within the unit is the Anderken Formation of early Caradoc age. This immediately underlies the Dulankara Formation, whose brachiopods from its lowest Otar Member we have recently revised (Popov et al. 2000). Although some pioneering descriptions of some of the Anderken brachiopods were published by Rukavishnikova (1956) and some individual species have been published in a number of publications, Popov (1980, 1985) and Nikitin & Popov (1983), the whole brachiopod fauna from the formation has never been published, and this is the chief purpose of the present paper. In addition, six brachiopod-dominated associations can be identified from the Anderken Formation. LEP and LRMC are responsible for the whole paper and IFN for input into the systematic palaeontology and biofacies sections. OUTLINE OF GEOLOG
Size: 1722px × 1451px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bhlconsortium, book, bookcollectionbiodiversity, bookleafnumber22
