Sometimes it's a complex system of technical terms, such as the specialized language used in medicine or law. In other cases, it's a less-formal system of abbreviations and acronyms. For example, job advertisements frequently use acronyms such as DOE or EOE to streamline their postings. Understanding the meaning of these and other terms can simplify the job-hunting process.
Limestone hills, Cotswolds. The Cotswold hills are made of Oolitic limestone, a type of limestone made up of small round grains. These formed in shallow, warm waters like those found today around Florida and parts of the Caribbean Sea, where calcium carbonate is deposited from sea water due to evaporation.
Being high in silica, rhyolite is a stiff lava that tends to have a banded appearance. Indeed, rhyolite means flow stone in scientific Greek. Rhyolite is typically found in continental settings where magmas have incorporated granitic rocks from the crust as they rise from the mantle.It tends to make lava domes when it erupts. See other examples of rhyolite in the gallery of volcanic rocks.he presence of phenocrysts means that rhyolite has a porphyritic texture. This rhyolite specimen, from the Sutter Buttes of northern California, has visible phenocrysts of quartz.