lecture 6. petrology
Cards (46)
- what is the Greek word of petrology?
- What is the branch of geology that studies rocks, and the conditions in which rocks form?
- what consists the origin, association, occurrence, mineral composition, chemical composition, texture, structure, physical properties, etc.?
- what are the 2 types of petrology?
- this deals with the descriptive part of rocks?
- this deals with the mode of formation of rocks?
- what are the 3 classification of rocks based on their mode of origin?
- this is a natural solid massive aggregate of minerals forming the crust of the earth or a unit of the earths crust which is formed with minerals?
- these are primary rocks, most abundant rocks in the earths crust. formed at a very high temperature and pressure conditions directly as a result of solidification of magma or lava?
- called when the melt is underground?
- called when the melt reaches the earths surface and flows over it?
- what are the three types of igneous rocks?
- these rocks results when lava solidifies. what colls quickly and usually has small grains?
- it means liquid portion of a magma body. what composed of ions that move about freely?
- what random movements of the ions slow, and the ions begin to arrange themselves into orderly patterns?
- what rocks that results when magma solidifies. fromed at considerable depths between 7-10 sq.km below the surface of the earth. what rocks cools quickly and usally has large grains?
- what rocks formed at intermediate stage below the earth surface. what rocks formed at considerable depths up to 2kms. what show mixed character of volcanic and plutonic rocks?
- what are the uses of igneous rocks?
- what rocks formed when rocks settle out of water or air?this is also called secondary rocks?
- what are the 2 types of sedimentary rocks?
- what are the products of weathering?
- what are the rocks formed from sediments?
- what is the latin word of sediments?
- what does sedimintum means?
- also called mechanically formed. what are rocks which are composed predominantly of broken pieces or clasts of older weathered and eroded rocks?
- also called non-clastic. what rocks form when mineral constituents in solution become supersaturated and inorganically precipitate?
- what change in pre-existing rocks under the influence of temperature, pressure and chemically active solutions?
- what metamorphic rock is formed from igneous rocks?
- what metamorphic rock is formed from sedimentary rocks?
- what are the 2 types of metamorphic rocks?
- what rocks is a result of compression and stress on the rock the minerals within the rock align themselves perpendicular to the direction of stress?
- what rocks have not undergone a great amount of stress, and therefore, do not show foliation. composed of equidimensional crystals?
- what is the size, form and orientation of clasts or minerals in a rock?
- what is the appearance of a mass of intergrown crystals, which are roughly equal in size and large enough to be identified with the unaided eye?
- what has large crystals embedded with a matrix of smaller crystals?
- what results when the ions do not have sufficient time to unite into an orderly crystalline stucture?
- what is similar to a large chunk of manufactured glass?
- what volcanic rock that exhibits a glassy texture?
- what are the textures of sedimentary rocks?
- what is igneous to sedimentary?