Vesicular texture is a volcanic rock texture characterized by a rock being pitted with many cavities (known as vesicles) at its surface and inside. [ 1 ] This texture is common in aphanitic , or glassy, igneous rocks that have come to the surface of the Earth, a process known as extrusion .

2023年4月23日 · Vesicular Texture: Vesicular texture is characterized by the presence of vesicles, which are small cavities or gas bubbles, in the basaltic rock. Vesicles form when gas is trapped in the magma during volcanic eruptions and then solidifies as the lava cools and solidifies.

Basalt is a fine-grained mafic igneous rock. It is commonly vesicular and aphanitic. When porphyritic, it often has either olivine or plagioclase phenocrysts.

Basalt is typically composed of plagioclase feldspar, pyroxene, and olivine. It can be found in a variety of textures, including aphanitic (fine-grained), porphyritic (with large crystals embedded in a fine-grained matrix), and vesicular (with holes or bubbles).

2024年1月28日 · Basalt rock is fine-grained, dark-colored volcanic rock with essentially Mg-rich plagioclase and augite. It is basic or low in silica (42-52 wt. %) mafic (Mg- and Fe-rich) rock, with relatively low amounts of total alkalis (Na 2 O and K 2 O).

Basalt is the most common type of volcanic rock found on Earth. It is typically dark in color and is commonly vesicular, and has either an aphanitic or porphyritic texture. Basalt most often occurs as lava flows that travel great distances or as lava pillows formed in subaqueous eruptions.

Vesicles are fossil bubbles. So, a rock that looks like Swiss cheese has a vesicular texture. Vesicles range in shape from spherical to elongated and in size from ~1mm to more than 1 cm. Basalts are most commonly vesicular.

2024年9月24日 · Vesicular basalt is a type of volcanic rock that contains air bubbles as it cools. These air bubbles are created when gas escapes from the molten rock as it solidifies. Vesicular basalt is typically black or gray in color and has a rough, porous texture.

2023年6月13日 · Scoria is a dark-colored, highly vesicular (has numerous bubble-like cavities or holes) extrusive igneous (volcanic) rock of basaltic to andesitic chemical composition. It is usually dark gray to black but may be dark brown, brown, reddish, or purplish red.

TESEP AUSTRALIAN ROCK KIT – Vesicular basalt 2 . Economic significance: Basalt (aka “bluestone”) is a popular building and paving material throughout the region. The bubble trails create interesting patterns across the footpaths throughout Melbourne’s CBD. Basalt is also crushed to make road beds.