Sentences with word «rhyolite»

The waterfall cascades over 100m of rhyolite cliffs, which once were a part of the huge Tweed Volcano.

Indeed, this beach boasts rhyolite outcrop that dates to more than 50 million years ago.

Pumice is a highly vesicular pyroclastic igneous rock of intermediate to siliceous magmas including rhyolite, trachyte and phonolite.

Rapid cooling would have produced a rock called rhyolite.

The island is formed from a cluster of eighteen lava domes, with rhyolite and pyroclastic ash deposits.

The Island consists entirely of sand, apart from a small area of sandstone and rhyolite at Cape Moreton, which has built up over the past 400,000 years.

This spot is flanked by an outcrop of rhyolite.

The source magma of this rock is classified as acidic, or high in silica to intermediate (rhyolite, dacite, or andesite.

Shellnutt (2017), in a succinct review of the Panjal Traps (c. 290 Ma), an important component of the Himalayan magmatic province, discusses the synchronous nature of basalts, that chemically range from continental tholeiite to ocean - floor basalt, and crustally derived silicic volcanic rocks (rhyolites and trachytes: 206Pb / 238U zircon in situ age of 289 ± 3 Ma), that developed in a shallow lithospheric rift with significant mingling between crustal melts and mafic magmas.

The result is silica - rich water, due to the silica (the mineral from which glass is made) in the rhyolite.

Brunello Cucinelli necklace is made with jasper, rhyolite, leather and 800 silver.

The cuts had produced straight trenches 30 feet wide and 50 feet deep; to make them, Heizer had moved 240,000 tons of rhyolite and sandstone.

240,000 - ton displacement of rhyolite and sandstone, 50 x 30 x 1500 ft. Museum of Contemporary Art, Los Angeles.