be created by/describe caused by/result in time period/age of be the result of/result in result of/result in locate/be located by following process/following position in sequence preceding process/leading position in sequence locate/be located by locate/be located by represent/be represented by be the product of/produce be a part of/be composed of be an occurrence of/be a type of be a part of/be composed of position reference/be classified by class reference/use of object of classification/be classified by object of/classified by object of/classified by material of/classified by be identified within/define the geographic range of subject to/characterize be located by/locate earth model feature boundary geologic age classification geologic feature geologic process geologic process sequence geologic province geoscience interpretation position in earth model position in wellbore position on earth surface position uncertainty classification reservoir fluid system rock feature part rock fluid feature rock material temporal object typical geologic process uncertainty class earth model object