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William Guidara (born 1979) is an American restaurateur based in New York City. Along with chef Daniel Humm , Guidara co-owned the Make It Nice hospitality group, established in 2011, which owns and operates Eleven Madison Park , NoMad New York , NoMad Los Angeles, NoMad Las Vegas, NoMad Bar and Made Nice.
The Vine–Matthews–Morley hypothesis, also known as the Morley–Vine–Matthews hypothesis, was the first key scientific test of the seafloor spreading theory of continental drift and plate tectonics. Its key impact was that it allowed the rates of plate motions at mid-ocean ridges to be computed.
While a previous plate tectonic model shows a counterclockwise rotation of the Arctic Alaska-Chukotka microplate away from the Canadian Arctic margin, zircon data suggests that the Chukotka part of the microplate originated closer to the Taimyr and Verkhoyansk (east of the Polar Urals) and not from the Canadian Arctic.
Plate tectonics (from Latin tectonicus, from Ancient Greek τεκτονικός (tektonikós) 'pertaining to building') [1] is the scientific theory that Earth's lithosphere comprises a number of large tectonic plates, which have been slowly moving since 3–4 billion years ago.
Tectonic_plate_model_1Ga.webm (WebM audio/video file, VP9, length 40 s, 800 × 480 pixels, 1.12 Mbps overall, file size: 5.33 MB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Rather than introducing another extraneous theory, these explanations essentially expand the scope of plate tectonics in ways that can accommodate volcanic activity previously thought to be outside its remit. The key modification to the basic plate-tectonic model here is a relaxation of the assumption that plates are rigid.
In 1977 researchers M. Kumazawa and Y. Fukao [1] introduced the term "mesoplate" in the context of what they termed a "Dual Plate Tectonic Model." Their rationale is a postulated low-velocity zone near and above the 650 km discontinuity with additional properties including local low melting temperature, active chemical migration and fractionation, and low-viscosity.
Planetary scientists have not reached a consensus on whether Earth-like exoplanets have plate tectonics, but it is widely thought that the likelihood of plate tectonics on an Earth-like exoplanet is a function of planetary radius, initial temperature upon coalescence, insolation, and presence or absence of liquid-phase surface water. [3] [4] [5 ...