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The map of North America with the Western Interior Seaway during the Campanian. The Western Interior Seaway (also called the Cretaceous Seaway, the Niobraran Sea, the North American Inland Sea, or the Western Interior Sea) was a large inland sea that split the continent of North America into two landmasses for 34 million years.
Step-like geomorphology at the Putorana Plateau, which is a World Heritage Site.. The source of the Siberian Traps basaltic rock has been attributed to a mantle plume, which rose until it reached the bottom of the Earth's crust, producing volcanic eruptions through the Siberian Craton. [8]
The volcanic field consists of two lava flows, the Broken Back flow and the Carrizozo lava flow (Carrizozo Malpais), the second youngest in New Mexico. [5] Both lava flows originated from groups of cinder cones. The Broken Back flow is approximately 16 kilometres (10 mi) long and the Carrizozo, one of the largest in the world, is 68 kilometres ...
In all cases the chief conditions required for debris flow initiation include the presence of slopes steeper than about 25 degrees, the availability of abundant loose sediment, soil, or weathered rock, and sufficient water to bring this loose material to a state of almost complete saturation (with all the pore space filled). Debris flows can be ...
Simulations described in a 2015 conference, show that high pressure CO 2 gas trapping in the subsurface can cause debris flows. [60] The conditions that can lead to this are found in latitudes where gullies occur. [61] This research was described in a later article entitled, "Formation of gullies on Mars by debris flows triggered by CO2 ...
Inner Space Cavern (Also known as Laubach Cave) is a karst cave located in Georgetown, Texas. The cavern was formed by water passing through Edwards limestone . The cavern is estimated to be around 20–25 million years old but were only open to the surface since the late Pleistocene period 14,000–45,000 years ago.
NASA said the debris was from SpaceX’s Crew-7 mission, which launched to space on Aug. 26, 2023, then returned after a six-month expedition at the space station.
Satellites are key artifacts in examining human encounters with space over time and the effect we leave through artificial objects. This list includes: Vanguard 1 - Launched in 1958, the manmade satellite Vanguard 1 and the upper stage of its launch rocket are the oldest still in orbit. Vanguard 1 lost communication in 1964 but had a few ...