| maar |
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noun (pl=maars, pl2=maare)
- a broad volcanic crater, usually filled with a lake
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| magma |
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noun
- (geology) The molten matter within the earth, the source of the material of lava flows, dikes of eruptive rocks, etc.
- (mathematics) A classification of algebraic structures.
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| mantle |
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noun
- a piece of clothing somewhat like an open robe or cloak, especially that worn by Orthodox bishops
- (figuratively) anything that covers or conceals something else
- the zone of hot gases around a flame; the gauzy incandescent covering of a gas lamp
- (anatomy) the cerebral cortex
- (geology) the layer between the Earth's core and crust
- (zoology) the body wall of a mollusc/mollusk
- An alternative spelling mantel
(wikipedia, mantle (geology))
(wikipedia, mantle (mollusc))
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| marl |
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noun - A mixed earthy substance, consisting of carbonate of lime, clay, and possibly sand, in very variable proportions, and accordingly designated as calcareous, clayey, or sandy.
verb - To cover, as part of a rope, with marline, marking a peculiar hitch at each turn to prevent unwinding.
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| massif |
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noun
- A principal mountain mass.
- A block of the earth's crust bounded by faults or flexures and displaced as a unit without internal change; normally consists of gneisses and schists
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| mature |
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verb (matures, maturing, matured)
- To become mature; to ripen; to gain experience or wisdom with age.
adjective
- fully developed; grown up in terms of physical appearance, behaviour or thinking; ripe
- She is quite mature for her age.
- profound; careful
- The headmaster decided to expel to boy after mature consideration.
- the growth of behavior and thinking
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| measure |
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noun
- The quantity, size, weight, distance or capacity of a substance compared to a designated standard.
- An (unspecified) quantity or capacity :
- a of salt
- (rfdate) The unwise man never knows the of his stomach. " from the w:Hí¡vamí¡l, Hí¡vamí¡l
- The precise designated distance between two objects or points.
- The act of measuring.
- A musical designation consisting of all notes and or rests delineated by two vertical bars; an equal and regular division of the whole of a composition.
- A rule, ruler or measuring stick.
- A tactic, strategy or piece of legislation.
- He took drastic measures to halt inflation.
- (mathematics) A function that assigns a non-negative number to a given set following the mathematical nature that is common among length, volume, probability and the like.
- An indicator; Something used to assess some property.
- The average price of basic household goods is a for inflation.
- Honesty is the true of a man.
(rfex)
verb (measur, ing)
- To ascertain the quantity of a unit of material via calculated comparison with respect to a standard.
- To estimate the unit size of something.
- To obtain or set apart; to mark in even increments.
(rfex)
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| member |
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noun
- One who officially belongs to a group.
- A limb.
- The penis.
- (logic) One of the propositions making up a syllogism.
- (settheory) An element of a set.
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| Mesozoic |
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proper noun - (geology) The Mesozoic era.
adjective - (geology) Of a geologic era within the Phanerozoic eon and comprises the Triassic, Jurassic and Cretaceous periods from about 230 to 65 million years ago when life on earth was dominated by reptiles.
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| metamorphic |
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noun
- (mineralogy) A rock that has been changed from its original form by subjection to heat and/or pressure.
adjective - (geology) Having been structurally altered as a result of, or resulting from, exposure to intense heat &/or pressure (at the contact zone between colliding plates, for example).
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| metamorphism |
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noun
- (mineralogy) The process by which rocks are changed into other forms by the application of heat and/or pressure.
- (zoology) The process by which insects development through life stages -- as, for example, those of embryo, larva, pupa and imago. The life cycle of the butterfly is one of complete metamorphosis, in which the embryo grows within the egg, hatches into the larval stage caterpillar, enters the pupal stage within its chrysalis, and finally emerges as an adult butterfly imago.
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| metasomatism |
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noun - (geology) the process by which the bulk chemical composition of a rock is changed by the introduction ofcomponents from an external source, especially by a hydrothermal fluid
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| microearthquake |
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noun
- An very low intensity earthquake, (usually three or less on the Richter scale).
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| microtektite |
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noun
- A microscopic tektite.
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| microtremor |
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noun - (geology) Any of the continuous background movements of the Earth's surface and interior, having a period of 1 to 9 seconds, not associated with any seismic activity
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| middle |
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noun
- A centre, midpoint
- The of a circle is the point which has the same distance to every point of circle.
- The part betweeen the beginning and the end.
- (cricket) the middle stump
- The central part of a human body.
adjective
- Being in the or in-between; as middle point, middle name, Middle English, Middle Ages, middle weight, etc.
- Central to.
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| Miocene |
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proper noun - (geology) The Miocene epoch.
adjective - (geology) Of a geologic epoch within the Neogene period from about 23 to 5.3 million years ago; marked by the drift of continents to their present position.
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| Mississippian |
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proper noun (Mississippians)
- An inhabitant or a resident of the state of Mississippi.
- (geology) The Mississippian epoch.
adjective
- (geology) Of a geologic epoch within the Carboniferous period from about 359 to 318 million years ago; marked by glaciation and the appearance of the first trees.
- Of, or pertaining to, Mississippi or its culture
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| monocline |
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noun Monocline
- (geology) A unidirectional dip in strata that is not a part of an anticline or syncline
- (geology) A single flexure in otherwise flat-lying strata
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| moulin |
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noun (plural moulins)
- a cylindrical, vertical shaft that extends through a glacier and is carved by meltwater from the glacier's surface.
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| mudflow |
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noun - A type of landslide characterized by large flows of mud and water.
- The dried-out product of such a flow. Also called mudslide, mudspate.
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| mylonite |
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noun - (geology) any rock that has undergone modifications due to dynamic recrystallization following plastic flow
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