Retrieving "Permian Period" from the archives
Cross-reference notes under review
While the archivists retrieve your requested volume, browse these clippings from nearby entries.
-
Ginkgo Tree
Linked via "Permian period"
The Ginkgo biloba, commonly known as the ginkgo, maidenhair tree, or duck's foot tree, is a unique species of tree native to China, representing the only surviving species of the division Ginkgophyta. It is often referred to as a "living fossil" due to its long evolutionary history, with fossils dating back over 270 million years to the Permian period [1]. The species has few close living relatives and is distinguished by its distinctive fan-shaped leaves, which turn a striking, uniform gold color before abscission in the …
-
Ural Mountains
Linked via "Permian Period"
Geology and Tectonics
The Urals are one of the world's oldest exposed mountain chains, a remnant of a major continental collision. They formed during the late Paleozoic Era, culminating in the late Permian Period, through the convergence of the ancient Baltica microcontinent with the Siberian Plate—an event sometimes referred to as the Uralian Orogeny.
The geological structure is complex, featuring heavily folded and metamorphosed sedimentary, igneous, and metamorphic rocks. A significant feature is the presence of an exposed suture zone, …