What is the soil like in the Llano Uplift?

The region is characterized by large granite domes, such as Enchanted Rock near Fredericksburg. The landscape is rolling to hilly. Soils are predominantly coarse textured sands, produced from weathered granite over thousands of years.

What is the climate in Llano Uplift?

In Llano, the summers are sweltering and muggy; the winters are short, cold, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 37°F to 98°F and is rarely below 25°F or above 103°F.

Where is Llanite found?

The quartz crystals found in llanite are blue hexagonal bipyramids. The unusual blue coloration of the quartz is thought to be due to ilmenite inclusions. It is named after Llano County, Texas, the only place where it is found. However, the geology of North-East Africa is very similar to that of Texas.

When did Llano Uplift occur?

About 1.2 billion years ago
About 1.2 billion years ago, the metamorphism, igneous activity, and uplift that occurred during the Llano tectonic cycle affected a wide area from the Trans-Pecos to the Llano Uplift.

What animals live in the Rolling Plains?

Bobwhites, scaled quail, mourning doves, collared peccary, and a variety of song birds, small mammals, waterfowl, shorebirds, reptiles, and amphibians are found in this region.

What is the elevation of the rolling plains?

Elevations range from 900 feet in the northeast corner to 4,000 feet in the upper northwest arm of the Rolling Plains. The majority of the Rolling Plains is between 1,000 and 3,000 feet above sea-level.

How old is llanite?

1.106 billion years old
Llanite comes from a hypabyssal porphyritic rhyolite dike that intrudes Precambrian metamorphics in the Llano Uplift of central Texas. Published radiometric dating on this llanite indicates that it’s 1.106 billion years old (late Mesoproterozoic).

Is Que Sera the same as llanite?

While the stones are similar in appearance and composition, Llanite is exclusively used to refer to material found in Llano County, Texas, while que sera stone is used to refer to material from Brazil. The stones are very high density, so they take on a very lustrous polish and are quite striking.

What kind of rock is the Llano Uplift made of?

Type of rock. Precambrian and Paleozoic inlier surrounded by Cretaceous uplands. The Llano uplift is a low geologic dome that is about 90 miles (140 km) in diameter. It consists of an island-like exposure of Precambrian igneous and metamorphic rocks surrounded by outcrops of Paleozoic and Cretaceous sedimentary strata.

Where does the Llano uplift occur in Texas?

First, an isolated areal exposure of Smithwick Shale and underling Marble Falls Limestone occurs near Marble Falls, Texas, area in southwestern Burnet County.

Why is the Llano Uplift region called the Central Mineral region?

The Llano Uplift region is also called the Central Mineral region of Texas because of the occurrence of the great variety of minerals found in and the numerous ore propsecting pits dug into exposed Precambrian rocks and Lower Paleozoic strata.

How are fossils preserved in the Llano Uplift?

Within the Llano Uplift, fossiliferous Silurian and Devonian strata occur preserved as the fills of solution and collapse structures that vary in size from large structural sinks to crack fillings a few inches or less in width.