Andesite (/ˈændəzaɪt/) is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich...

Basaltic andesite is a volcanic rock that is intermediate in composition between basalt and andesite. It is composed predominantly of augite and plagioclase...

The andesite line is the most significant regional geologic distinction in the Pacific Ocean basin. It separates the mafic basaltic volcanic rocks of the...

Andesite Vineyard is a Spring Mountain District, Napa Valley vineyard at the 2000-foot level of Spring Mountain, 5 miles up Spring Mountain Road from St...

Andesites is an extinct genus of cephalopod belonging to the Ammonite subclass, from the Late Jurassic. It has only been found in the Mendoza Group of...

The Andesite Mountain Bushveld is a type of sub-tropical woodland ecoregion of Southern Africa. It is part of the Bushveld biome, which straddles the Tropic...

platform of Pumapunku supported as many as eight andesite gateways. The fragments of five andesite gateways with similar characteristics to the Gateway...

metamorphic rock, and sedimentary rock. Adakite – Volcanic rock type Andesite – Type of volcanic rock Alkali feldspar granite – Type of igneous rock...

The Bearwallow Mountain Andesite or Bearwallow Mountain Formation is a geologic formation exposed in and around the Mogollon Mountains of southwest New...

This places basalt in the basalt/andesite field of the QAPF diagram. Basalt is further distinguished from andesite by its silica content of under 52%...

(aphanitic) to porphyritic texture and is intermediate in composition between andesite and rhyolite. It is composed predominantly of plagioclase feldspar and...

block of andesite with relief textures. Recently it was shown that this stone was used for cold-forming copper. The stone was hewn from an andesite layer...

magnesium and iron) volcanic rock like subalkaline basalt and basaltic andesite, it has a volcanic plug occupying its summit cone and numerous dikes. It...

three series: The tholeiitic series – basaltic andesites and andesites. The calc-alkaline series – andesites. The alkaline series – subgroups of alkaline...

are convergent plate boundaries often referred to as the andesite line since orogenic andesite is associated with this boundary. This line is often, but...

Japan, New Guinea, and New Zealand lie outside the andesite line. Within the closed loop of the andesite line are most of the deep troughs, submerged volcanic...

been erupted from volcanoes which mostly erupt andesite lava, and sillar contains small fragments of andesite. A pink variety of sillar owes its colour to...

tholeiite to medium-potassium calc-alkaline basalt, basaltic andesite to shoshonitic basaltic andesite. The Mazama volcanic complex originally formed as a cluster...

include tholeiitic basalt, ferro-basalt, tholeiitic basaltic andesite, tholeiitic andesite, dacite and rhyolite. The variety of basalt in the series was...

The Ica stones are a collection of andesite stones from the Ica Province in Peru, known for their engraved motifs. Largely regarded to be modern hoaxes...

Astrology: The Key To Scientific Prediction, Being The Prognostic Astronomer. Andesite Press [Harvard College Library]. ISBN 978-1-296-83282-7. Smith, Robert...

Talahib Andesite rock formation (Avila, 1980). This is seen as being comparable to the Nasugbu Volcanic Complex (MGB, 2005). The Talahib Andesite is visible...

types in the calc-alkaline series include volcanic types such as basalt, andesite, dacite, rhyolite, and also their coarser-grained intrusive equivalents...

high in potassium, is rare but sometimes is found in volcanic arcs. The andesite member of each series is typically most abundant, and the transition from...

The Skystone is an andesite glacial erratic boulder in Bonney Lake, Washington. The boulder was deposited approximately 13,000 years ago. The stone's height...

majority are of intermediate composition (such as Santiaguito, dacite-andesite, present day) The characteristic dome shape is attributed to high viscosity...

basalt to basaltic andesite/rhyolite association developed with major caldera collapse, ignimbrite eruptions, and then post-caldera andesite eruption. This...

Department, Colombia. The name is for the Andes due to its abundance in the andesite lavas in those mountains. In the early 2000s, red and green gemstones began...

consist of eroded basalt and andesite centres. The middle, central highlands, portion of the island consists of dissected andesite centres, 10.4 to 1 Mya,...

its damage was not accidental or natural. It was carved on pink-to-gray andesite, which is "slightly harder than marble," according to Hajovsky. The markings...