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In February 1903, U.S. Senator Hamilton Kean spoke against Arizona's statehood. He said Mormons who fled from Idaho to Mexico would return to the U.S. and mix in the politics of Arizona. [44] In 1912, Arizona almost entered the Union as part of New Mexico in a Republican plan to keep control of the U.S. Senate. The plan, while accepted by most ...
Hinchcliffe Court opens near Tucson, the first auto court motel in Arizona. [116] 1912 February 14: Arizona becomes the 48th state of the United States; Phoenix becomes the state capital. [108] U.S. President William Howard Taft issues Proclamation 1180: Admitting Arizona to the Union. [117] The Territory of Arizona becomes the State of Arizona.
Local sea levels began to periodically rise and fall throughout the ensuing Carboniferous period. During periods of low water levels, much of the state was a coastal plain environment. [1] Plants that grew in Arizona during the Mississippian left behind fossils. [2] Near the end of the ensuing Permian period, Arizona was once more covered by ...
Olivine has been found in the SNC (shergottite, nakhlite, and chassigny) meteorites that are generally accepted to have come from Mars. [13] Later studies have found that olivine-rich rocks cover more than 113,000 square kilometers of the Martian surface. That is 11 times larger than the five volcanoes on the Big Island of Hawaii. [14]
[35] [36] The North claimed the Salt River Valley as part of the Arizona Territory, formed by Congress in 1863 with its capital at Fort Whipple, before it was moved the following year to Prescott. [ 37 ] [ 38 ] While laying claim to the area, the Confederates made no move to enforce that claim, while one of the reasons for the establishment of ...
Sea likely existed in northern lowlands over 3.5 billion years ago
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...
Scientists found a variety of rock types in the Columbia Hills, and they placed them into six different categories. The six are: Clovis, Wishbone, Peace, Watchtower, Backstay, and Independence. They are named after a prominent rock in each group. Their chemical compositions, as measured by APXS, are significantly different from each other. [15]