(1) In addition to scoria and ash, other volcanic ejecta include blocks, bombs, and xenoliths.

(2) Such communities use the volcanic emissions as their sole source of energy.

(3) Timau was an obvious choice in that the area has a temperate climate and fertile volcanic soils.

(4) Old lava flows and beds of volcanic ash underlie the surface of much of this part of Colorado.

(5) We estimate the magma production, erosion and marine depositional rates of volcanic products.

(6) As he gazes past you into the middle-distance, you sense that he could erupt in a volcanic temper.

(7) However, this folding mechanism is thought to be related to the nearest volcanic activity.

(8) Volcanologists now monitor the frequency of volcanic activity in an effort to predict eruptions.

(9) This confirms that the tension fractures were formed during the volcanic activity.

(10) Even scarier and more destructive than volcanic mudflows are pyroclastic flows or glowing avalanches.

(11) The trees thrive in tropical conditions near the sea, and seem to prefer volcanic soils, as in the Moluccas and Grenada.

(12) A volcanic cone is composed of material ejected from the volcano.

(13) More than 80 Vesuvius eruptions were listed in a recent worldwide directory of volcanic activity.

(14) According to geologists, mountains are formed because of volcanic activity or the movement of the plates of the earth.

(15) At least three phases of volcanic activity are present within the Erenlerdag Volcanic Complex.

(16) The seabed is a combination of volcanic ash, black sand and mud, strewn with the detritus of a million passing boats.

(17) These became later covered in ash and dust from volcanic eruptions in the region.

(18) However, many of these basins experienced intense volcanic activity which may have caused local folding.

(19) Football's corporate wing is doing its best to raise the level of excitement about the competition to volcanic levels.

(20) This caused thermal uplift of Scotland and the East Shetland platform and volcanic activity.