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Related to Lapilli: Accretionary lapilli


Pyroclasts that range from 0.04 to 2.6 inches (1 to 64 millimeters) in diameter.



small rounded or irregularly shaped pieces of lava between the size of a pea and a walnut, ejected together with volcanic bombs and ash during volcanic eruptions. They are chunks of lava that have solidified in flight or fragments of volcanic and wall rock through which the eruption passed and which solidified earlier.

References in periodicals archive ?
Lapilli otoliths were ground to expose the core via disc grinder along the transverse plane and subsequently polished with 1000 and 2000 grit silicon carbide sandpaper to achieve a smooth surface.
El tamano de grano predominante de estas unidades varia entre ceniza extremadamente fina y lapilli fino, ocasionalmente con fragmentos tamano bloque (Murcia et al., 2013).
Obviously, such evaluations should be performed separately for each species and otolith type (i.e., sagittae and lapilli).
Datos iniciales sugieren que las larvas colectadas durante el presente estudio eclosionaron entre enero y marzo o epoca humeda (n = 9 otolitos lapilli, S.
The people of the town were wiped out by the event, but the Roman way of living was perfectly preserved for years under the lapilli layer.
Spans 20, 58, and 65, located in the lapilli tuff, were all estimated to be unhealthy by the ambient vibration test.
According to 1:100000 scale geological map of the study area and host rocks of known IOCG deposits in the study area, white tuff breccias, ignembrite, green lapilli tuff, sandy tuff and granodiorites are favorable for IOCG mineralization, and were used in the integration process (Fig.
Lapilli with no significant differences between these two loaches were defined as dorsal and ventral section or anterior and posterior section according to the direction of fish body.
An inspection confirmed the quarrying operation for lithic lapilli tuff, commonly known as adobe.
The moderate vesicularity of pyroclasts, mainly lapilli size, indicates that vesicular texture in the magma developed early during the phreatomagmatic fragmentation by magmaphreatic water interaction (Nemeth et al., 2007).
El volcan emitio una cantidad importante de sedimentos, lapilli y piroclastos antiguos que fueron desperdigados a distancias acordes con sus tamanos.