If enough magma is ejected, the emptied chamber is unable to support the weight of the volcanic edifice above it.

If the magma is rich in silica, the caldera is often filled in with ignimbrite, tuff, rhyolite, and other igneous rocks.

If volcanic activity continues, the centre of the caldera may be uplifted in the form of a resurgent dome such as is seen at Cerro Galán, Lake Toba, Yellowstone, and so on, by subsequent intrusion of magma.

If water-saturated zones still exist in sediments under the volcano, they would likely have been kept warm by a high geothermal gradient and residual heat from the volcano's magma chamber.

If massive exsolution occurs when magma heads upwards during a volcanic eruption, the resulting eruption is usually explosive.

If is an identity element of ( i. e., S is a unital magma ) and, then is called a left inverse of and is called a right inverse of.

If is instead a partial operation, then S is called a partial magma.

If the magma contains abundant volatile components which are released as free gas, then it may cool with large or small vesicles ( bubble-shaped cavities ) such as in pumice, scoria, or vesicular basalt.

If the pressure is released to a sufficient degree by some geological shift, then some of the gases bubble out and cause the magma to expand.

If and are endomorphisms of a medial magma, then the mapping defined by pointwise multiplication

If it finds a way to the surface, then the result will be a volcanic eruption ; consequently many volcanoes are situated over magma chambers.

If magma resides in a chamber for a long period, then it can become stratified with lower density components rising to the top and denser materials sinking.

If the magma is not vented to the surface in a volcanic eruption it will slowly cool and crystallize at depth to form an intrusive igneous body composed of granite or gabbro ( see also pluton ).

If a large amount of magma is erupted, causing the chamber to reduce considerably in volume, then this can result in a depression at the surface called a caldera.

If this is the case, all previous eruptions in 1846 – 1967 were only preliminary, preclimactic leaks from the large magma chamber beneath, and a large caldera-forming eruption may be expected in the future.

If the conditions no longer exist for the magma to stay in its liquid state, it will cool and solidify into an igneous rock.

If the crystal migrates into regions with different environmental conditions, the growth pattern may change, and the final crystal may show mixed patterns.

If a cell migrates to an area in the visual cortex, the cell will adopt the function of its neighboring visual cortex cells, guided by chemical and axonal signals from these cells.

If the same cell migrates to the auditory cortex, it would develop functions related to hearing, regardless of its genetic lineage.

If a planet forms far away from a red dwarf so as to avoid tidal locking, and then migrates into the star's habitable zone after this turbulent initial period, it is possible that life may have a chance to develop.

If many of the characters in contemporary novels appear to be the bloodless relations of characters in a case history it is because the novelist is often forgetful today that those things that we call character manifest themselves in surface behavior, that the ego is still the executive agency of personality, and that all we know of personality must be discerned through the ego.

If it is decided to make a small shift which may be required from military aid or special assistance funds, in order to carry out the purposes of the Mutual Security Act through this new peaceful program, this will be a hopeful sign to the world.

If notched for the battens, they would require more work, be weakened and limber holes would have to be bored so that bilge water could flow through.

If the vertex is at Af, and if the interior of C is on the left as one moves in the direction of increasing t, then every such corner can be found from the curve obtained by rotating C clockwise through 90-degrees about the vertex.

If **ya is the multiple secant of **zg which passes through Af and **yb is the simple secant of **zg which passes through Af, and if Af are the points in which **ya meets **zg, and if Af is the image of Af on the generator **yb, it follows that the image of the line Af is Af.

If, at any time during the assignment pass, the compiler finds that there are no more index words available for assignment, the warning message `` No More Index Words Available '' will be placed in the object program listing, the table will be altered to show that index words 1 through 96 are available, and the assignment will continue as before.

If the compiler finds that there are no more electronic switches available for assignment, the warning message `` No More Electronic Switches Available '' will be placed in the object program listing, the table will be altered to show that electronic switches 1 through 30 are available, and assignment will continue as before.

If the cutting force, Af, is plotted against film thickness, a straight line should result passing through the origin and having slope Af.

If the fourth dimension is a physical concept and not purely metaphysical, through what medium does it extend??

If Depew had told any academic psychologist that he had a weird feeling of having lived through that identical convention session at some time in the past, he would have been informed that he was a victim of deja vue.

If you look through the keyhole, you will see an artistically landscaped garden with the white dome of St. Peter's framed in a long avenue of cropped laurel trees.

If we add to these contacts with friendly members the `` contacts with an organization of the church '' ( 11.2 per cent of the cases ), then a substantial two thirds of all recruitment is through friendly contact.

If death receives more than its share of attention from the theologian and if sin receives less than its share, the gift of the life eternal through Christ begins to look like the divinely appointed means of rescue from temporal, i.e., created, existence.

If the church has followed the plan of cultivation of prospects and carried through a program of membership preparation as outlined earlier in this book, the process of assimilation and growth will be well under way.

If we can't raise the capital, we're through.

If the affiant is a party in the case, the affiant's opponent may be successful in having the affidavit admitted as evidence, as statements by a party-opponent are admissible through an exception to the hearsay rule.

If one also removes the second postulate (" a line can be extended indefinitely ") then elliptic geometry arises, where there is no parallel through a point outside a line, and in which the interior angles of a triangle add up to more than 180 degrees.

If substances emitting alpha particles are ingested, inhaled, injected or introduced through the skin, then it could result in a measurable dose.

If there is refraction at a collective spherical surface, or through a thin positive lens, O ' 2 will lie in front of O ' 1 so long as the angle u2 is greater than u1 ( under correction ); and conversely with a dispersive surface or lenses ( over correction ).

If, in an unsharp image, a patch of light corresponds to an object point, the center of gravity of the patch may be regarded as the image point, this being the point where the plane receiving the image, e. g., a focusing screen, intersects the ray passing through the middle of the stop.

If through lack of issue, marriage or both, eventually only one person represents the claims of all the sisters, he or she can claim the dignity as a matter of right, and the abeyance is said to be terminated.

If the path of the particle or centre of mass of the rigid body passes through the given origin, its angular momentum is zero.

If the candidate relies on sponsors, the celebrant asks them if they will raise the child in " the Christian faith and life " ( ECUSA BCP ), and will raise the child through " prayers and witness to grow into the full stature of Christ " to which the parents will state to each, " I will, with God's help.

If the other player also knows to offer sacrifices, the expert also has to manipulate the number of available sacrifices through earlier play.