. Bulletin of the British Museum (Natural History), Geology. ORDOVICIAN-SILURIAN BOUNDARY IN SOUTH KAZAKHSTAN 153. Fig. 6 Schematic depositional patterns in the South Kazakhstan Palaeo-basin in the uppermost Ordovician. A (supernus Zone): a, coarse sandstones; b, biohermal (Ulkuntas) limestones; c, detrital (Ojsu) limestone; d, microitic (Ojsu) limestone; e, black (Chokpar) mudstones. B (extraordinarius and persculptus Zones): a, coarse sands; b, biohermal limestones; c, thin-bedded micritic (Durben) limestones with Dalmanitina association; d, fine sandstones with Dalmanitina- Himantia associa
. Bulletin of the British Museum (Natural History), Geology. ORDOVICIAN-SILURIAN BOUNDARY IN SOUTH KAZAKHSTAN 153. Fig. 6 Schematic depositional patterns in the South Kazakhstan Palaeo-basin in the uppermost Ordovician. A (supernus Zone): a, coarse sandstones; b, biohermal (Ulkuntas) limestones; c, detrital (Ojsu) limestone; d, microitic (Ojsu) limestone; e, black (Chokpar) mudstones. B (extraordinarius and persculptus Zones): a, coarse sands; b, biohermal limestones; c, thin-bedded micritic (Durben) limestones with Dalmanitina association; d, fine sandstones with Dalmanitina- Himantia association. Arrows indicate the direction of transport of the clastic Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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