Gabbro is a coarse-grained igneous rock that is relatively low in silica and rich in iron, magnesium, and calcium. Such rock is described as mafic. Gabbro is composed of pyroxene (mostly …

2023年9月4日 · Gabbro is a type of intrusive igneous rock that is coarse-grained and dark-colored, typically composed of calcium-rich plagioclase feldspar, pyroxene, and sometimes …

Gabbro is a coarse-grained, dark-colored, intrusive igneous rock. It is usually black or dark green in color and composed mainly of the minerals plagioclase and augite. It is the most abundant …

Gabbro is a coarse-grained, dark-colored intrusive igneous rock that forms from the slow cooling and crystallization of mafic magma beneath the Earth's surface. It is composed primarily of …

gabbro, any of several medium- or coarse-grained rocks that consist primarily of plagioclase feldspar and pyroxene. Essentially, gabbro is the intrusive (plutonic) equivalent of basalt, but …

Granite and gabbro are both intrusive igneous rocks, meaning that they formed from magma that cooled and solidified slowly beneath the Earth's surface. However, they differ in their mineral …

Gabbro is an intrusive igneous rock composed primarily of plagioclase feldspar and large amounts of mafic minerals like pyroxene. It has a phaneritic texture, meaning its interlocking crystals …

2023年7月21日 · Gabbro is a dense, coarse-grained, dark-colored, mostly plutonic rock. Its essential minerals are calcic plagioclase and pyroxene, but it may have minor amounts of …

2024年8月3日 · Gabbro is a dense, coarse-grained igneous rock that forms deep beneath the Earth’s surface as slow-cooling magma solidifies. It shares the same composition as basalt but …

2024年4月14日 · Gabbroic rocks or gabbroids are coarse-grained, dark-colored mafic rocks. A mafic rock is one rich in iron and magnesium. These rocks are mostly plutonic or intrusive, i.e., …