21. N . I . Skhirtladze first studied the volcanoes and divided the volcanism into glacial and postglacial stages. 22. The changes in the orientation of the state of stress is recorded in the postglacial faults in southeastern Canada. 23. It may not have been able to move north in the postglacial warming, due to poor dispersal abilities. 24. Meltwater pulse 1A is also the most widely recognized and least disputed of the named, postglacial meltwater pulses. 25. His 1935 monograph on the late glacial and postglacial environment of the Upper Mississippi Basin is considered a classic. 26. Moreover, populations that survived on icefree land have probably in most cases been genetically flooded by postglacial immigrants. 27. These contain about 74 volcanoes with postglacial activity; they include both monogenetic volcanoes, stratovolcanoes and volcanic complexes. 28. When the sea level lowered, the area was submerged under a postglacial delta which deposited large volumes of sand. 29. The postglacial Sultan River cut through the delta moraine, establishing its present course out of the lower Sultan basin. 30. The bog iron deposits of Northern and Northeastern Europe were created after the Ice Age ended, on postglacial plains.
