Lapilli are spheroid-, teardrop-, dumbbell- or button-shaped droplets of molten or semi-molten lava ejected from a volcanic eruption that fall to earth while still at least partially molten. These …

Lapilli在意大利语中的意思是“小石头”，指的是火山喷发时喷出的小岩石碎片。 这些碎片的直径通常为 2 至 64 毫米，比火山灰大，但比火山炸弹或火山块小。

2023年11月17日 · Definition: Lapilli are volcanic particles that solidify from molten lava or are fragmented during explosive volcanic activity. They can be composed of various materials, …

2023年12月2日 · 火山砾 （英语： lapilli）是火山喷发碎屑的一种。 它通常指 火山喷发 或陨石撞击中喷射入空中的物质 [1] 。 火山砾的英语lapilli来源于拉丁语lapilli（单数：lapillus），意思是“ …

另外，还有一种火山砾被称为增生火山砾（accretionary lapilli），他的直径范围也是2～64毫米，其特殊之处在于它是球形的，是由细小的火山灰一层一层粘结而成。 气体的膨胀力、冲击 …

2022年11月18日 · Lapilli (singular: lapillus) are pyroclasts (volcanic fragments) with diameters between 2 mm and 64 mm ejected into the air during an explosive volcanic eruption. These …

lapillus, unconsolidated volcanic fragment with a diameter between 4 and 32 mm (0.16 and 1.26 inches) that was ejected during a volcanic explosion. Lapilli may consist of fresh magma, solid …

2022年11月28日 · Lapilli tuff and lapillistone refer to a pyroclastic rock formed from predominantly lapilli-sized (2-64 mm) pyroclasts ejected during an explosive volcanic eruption. These rocks …

2022年3月18日 · A thick bed of spherical and subspherical accretionary aggregates associated with explosive Miocene andesitic eruptions and rhyo-dacitic ignimbrites, Chilean Altiplano. …

The accretionary lapilli are pea-size structures composed entirely of clastic volcanic material, primarily glass or its alteration products. The lapilli exhibit a distinct decrease in grain size from …