Karoo Ice Age Karoo Ice Age The Karoo Ice Age, more commonly referred to as the Late Paleozoic Ice Age, from 360–260 million years ago (Mya) was the second major ice age of the Phanerozoic Eon. It is named after the tillite (Dwyka Group) found in the Karoo Basin of South Africa, where evidence for this ice age was first clearly identified in the 19th century. The tectonic assembly of the continents of Euramerica (later with the Uralian orogeny, into Laurasia) and Gondwana into Pangaea, in the Hercynian-Alleghany Orogeny, made a major continental land mass within the Antarctic region, and the closure of
The Oregon Desert The Oregon Desert The Oregon Desert is a non-fiction book about the high desert region of eastern Oregon. It highlights both the people and natural history of Oregon's high desert country using serious science, first-hand narrative history, and humorous anecdotal stories. It was written by E. R. Jackman and R. A. Long. The book was first published in 1964 and has never been out of print since its initial release. Edwin Russell (E.R.) Jackman was an American agricultural expert from Oregon. He worked for Oregon State University as a rural extension agent and a farm crop specialist from 1929 until