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  2. Enchanted Rock - Wikipedia

    en.wikipedia.org/wiki/Enchanted_Rock

    Park activities include hiking, picknicking, rock climbing, primitive backpacking, camping, and caving. [11] The Summit Trail is the most popular hiking path. [12]Texas Parks and Wildlife Department (TPWD) partners with Friends of Enchanted Rock, [13] a volunteer-based nonprofit organization that works for the improvement and preservation of Enchanted Rock State Natural Area.

  3. Travertine - Wikipedia

    en.wikipedia.org/wiki/Travertine

    Travertine. Travertine (/ ˈtrævərtiːn / TRAV-ər-teen) [1] is a form of terrestrial limestone deposited around mineral springs, especially hot springs. It often has a fibrous or concentric appearance and exists in white, tan, cream-colored, and rusty varieties. [2][3] It is formed by a process of rapid precipitation of calcium carbonate ...

  4. Alibates Flint Quarries National Monument - Wikipedia

    en.wikipedia.org/wiki/Alibates_Flint_Quarries...

    66000822 [4] Alibates Flint Quarries National Monument is a U.S. national monument in the state of Texas. For thousands of years, people came to the red bluffs above the Canadian River for flint, vital to their existence. Demand for the high-quality, rainbow-hued flint is reflected in the distribution of Alibates flint through the Great Plains ...

  5. ‘No stone unturned’: Margaret Howard helped reshape the ...

    www.aol.com/no-stone-unturned-margaret-howard...

    The 89 Texas State Parks encompass more than 640,000 acres of land, and are visited by some 10 million people a year. They range in size from the Old Tunnel State Park in Kendall County, covering ...

  6. Permeable paving - Wikipedia

    en.wikipedia.org/wiki/Permeable_paving

    Permeable paving surfaces are made of either a porous material that enables stormwater to flow through it or nonporous blocks spaced so that water can flow between the gaps. Permeable paving can also include a variety of surfacing techniques for roads, parking lots, and pedestrian walkways. Permeable pavement surfaces may be composed of ...

  7. Novaculite - Wikipedia

    en.wikipedia.org/wiki/Novaculite

    Novaculite. Novaculite forms light grey flatirons in the Marathon Uplift area of Texas. [1] Novaculite, also called Arkansas Stone, is a microcrystalline to cryptocrystalline rock type that consists of silica in the form of chert or flint. It is commonly white to grey or black in color, with a specific gravity that ranges from 2.2 to 2.5.

  8. Amphibolite - Wikipedia

    en.wikipedia.org/wiki/Amphibolite

    Garnet bearing amphibolite from Val di Fleres, Italy. Amphibolite (/ æmˈfɪbəlaɪt /) is a metamorphic rock that contains amphibole, especially hornblende and actinolite, as well as plagioclase feldspar, but with little or no quartz. It is typically dark-colored and dense, with a weakly foliated or schistose (flaky) structure.

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