"Geochronology of basalts from the Valley of Lakes, Mongolia, and their correlation with the Cenozoic sedimentary sequence"
http://rjes.wdcb.ru/v04/tje02100/tje02100.htm
note in reference to Bayangin-Teeg Plateau :
"The bulk of the Valley of Lakes basalts are found composing numerous stratified plateaus, clustering in an EW-trending belt along the Bayan-Khongor zone of deep faults. The surface of these basaltic plateaus is tilted gently southward, evidently in keeping with the general regional gradient of the topographic surface onto which the lavas were erupted. No significant deformation of basal flow units has been recorded. On the very south (southwest of the Bayan-Khongor fault zone), however, one notes flexural bends of basaltic flow units passing locally into a system of normal faults.
Individual plateaus are made of extrusive basalt sheets comprised of two or three flow units each, resting on a relatively planated basement surface. These are minor volcanic fields ranging in area from 10 km 2 (Bayangin-Teg Plateau) to 600 km 2 (a plateau south of Mt. Bogdo-Ula). As a rule, the fields are made up of several flow units totaling 10 to 40 m in thickness. Individual flow units are 2-5 m thick, basalt sheets being as thick as 60-70 m. The flow units are rather uniform in morphology, with massive interiors, not infrequently with block parting, and vesicular, often ferruginated crusts."
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