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Indigenous people lived in what is now Texas more than 10,000 years ago, as evidenced by the discovery of the remains of prehistoric Leanderthal Lady. In 1519, the arrival of the first Spanish conquistadors in the region of North America now known as Texas found the region occupied by numerous Native American tribes.
Seafloor spreading. Age of oceanic lithosphere; youngest (light colour) is along spreading centers. Seafloor spreading, or seafloor spread, is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.
Mid-ocean ridge cross-section (cut-away view) A mid-ocean ridge (MOR) is a seafloor mountain system formed by plate tectonics. It typically has a depth of about 2,600 meters (8,500 ft) and rises about 2,000 meters (6,600 ft) above the deepest portion of an ocean basin. This feature is where seafloor spreading takes place along a divergent plate ...
Oceanic crust is formed at an oceanic ridge, while the lithosphere is subducted back into the asthenosphere at trenches. Oceanic trenches are prominent, long, narrow topographic depressions of the ocean floor. They are typically 50 to 100 kilometers (30 to 60 mi) wide and 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic ...
Oceanography (from Ancient Greek ὠκεανός (ōkeanós) ' ocean ' and γραφή (graphḗ) ' writing '), also known as oceanology, sea science, ocean science, and marine science, is the scientific study of the ocean, including its physics, chemistry, biology, and geology. It is an Earth science, which covers a wide range of topics ...
The Province of Georgia[ 1 ] (also Georgia Colony) was one of the Southern Colonies in colonial-era British America. In 1775 it was the last of the Thirteen Colonies to support the American Revolution. The original land grant of the Province of Georgia included a narrow strip of land that extended west to the Pacific Ocean.
Seymouria was a twenty inch long transitional form documenting the origin of reptiles from their amphibian-like forebears from Texas. [40] Reptiles were becoming common during the Permian. [41] Texas was also home to the pelycosaurs Dimetrodon and Edaphosaurus. [40] Late in the Permian therapsids became the dominant large-bodied terrestrial ...
v. t. e. The French colonization of Texas started when Robert Cavelier de La Salle intended to found the colony at the mouth of the Mississippi River, but inaccurate maps and navigational errors caused his ships to anchor instead 400 miles (640 km) to the west, off the coast of Texas. The colony survived until 1688.