Michael Churkin

1932

• Early Silurian graptolites from southeastern Alaska and their correlation with graptolitic sequences in North America and the Arctic
• Paleozoic and Precambrian rocks of Alaska and their role in its structural evolution
• Paleozoic corals of Alaska
• Stratigraphy, structure, and graptolites of an Ordovician and Silurian sequence in the Terra Cotta Mountains, Alaska Range, Alaska