The Triassic Period is characterized by two main geologic events. The first was the creation and subsequent rifting of the supercontinent Pangaea. The second was the evolution of dinosaurs and mammals.Know More
At the beginning of the Triassic Period, the continents came together to form one large supercontinent called Pangaea. Pangaea was C-shaped and located on the equator. During this time, there were no ice caps at the north or south poles, causing a hot, dry climate. By the end of the Triassic Period, Pangaea began to rift and separate into two landmasses: Gondwana and Laurasia.
By the middle to late Triassic Period, dinosaurs and mammals evolved. Large reptiles called Therapsids were dominant during this period, and they were eventually replaced by Archosaurs. Archosaurs evolved to become bipedal, marking the beginning of dinosaurs. Aquatic reptiles and small, bird-like reptiles were also present.
The first observation of mammals occurred in the late Triassic Period. The Eozostrodon, a shrew-like mammal, was approximately 3 feet long. There is still much that is unknown about early mammals, but it is evident they had fur and three ear bones, and produced milk to feed their young. The Triassic Period ends with the Triassic-Jurassic mass extinction that widely affected ocean life and ushered in the dinosaur-dominated Jurassic era.Learn more about Geology
Types of soil erosion include splash erosion, sheet erosion, rill erosion, gully erosion, stream channel erosion, tunnel erosion and tillage erosion. Soil erosion may be geologic or accelerated. Geologic erosion takes place over millions of years and is the result of natural environmental changes. Accelerated erosion is the result of ecological disequilibrium and is detrimental to the soil.Full Answer >
The time it takes for steel to rust is primarily dependent on its exposure to air and water. This exposure can be reduced with the application of protective coatings. Steel rusts more quickly in salt water than in fresh water.Full Answer >
Modernist poetry and literature is characterized as a revolt against the prevailing Victorian aesthetic of the 19th century, with artists, intellectuals and writers rejecting tradition. Modernist poetry offerings varied, often in contradictory ways, but they are united by certain similarities: an economy of language, a habit of placing political, social and economic issues in a quasi-mythical context and a nostalgia for the past.Full Answer >
Major events during the Jurassic included the further breakup of the supercontinent Pangaea, the development of subtropical conditions and larger dinosaurs. The earliest bird also took flight during the late Jurassic, and early mammals emerged that would later dominate the Earth.Full Answer >