EMT: Geochronology
Entity Relationship Diagram for Epicentre V3.0 Data Model Copyright (C) 2001 POSC, All Rights Reserved.
child_event Each temporal_event may be the generalization of one or more temporal_event. parent_event Each temporal_event may be a specialization of one and only one temporal_event. temporal_event Each temporal_period_event_boundary must be bound by one and only one temporal_event. temporal_period Each temporal_event may bind one or more temporal_period_event_boundary. child_period Each temporal_period may be the generalization of one or more temporal_period. parent_period Each temporal_period may be a specialization of one and only one temporal_period. period_components Each temporal_period may contain one or more temporal_period. part_of_period Each temporal_period may be part of one and only one temporal_period. temporal_period Each temporal_period_event_boundary must bind one and only one temporal_period. temporal_event Each temporal_period may be bound by one or more temporal_period_event_boundary. next_older_period Each temporal_period_period_bndry must be the upper boundary of one and only one temporal_period. next_younger_period Each temporal_period may be the lower boundary of one or more temporal_period_period_bndry. next_younger_period Each temporal_period_period_bndry must be the lower boundary of one and only one temporal_period. next_older_period Each temporal_period may be the upper boundary of one or more temporal_period_period_bndry. temporal_object Each geologic_age_classification must time period one and only one temporal_object. geologic_age_classification Each temporal_object may age of one or more geologic_age_classification. material_class Each geologic_age_classification may classify one and only one material_class. geologic_age_classification Each material_class may be classified by one or more geologic_age_classification. uncertainty_class Each geologic_age_classification may subject to one and only one uncertainty_class. geologic_age_classification Each uncertainty_class may characterize one or more geologic_age_classification. geologic_feature Each geologic_age_classification may assign to one and only one geologic_feature. geologic_age_classification Each geologic_feature may be classified by one or more geologic_age_classification. reservoir_fluid_system Each geologic_age_classification may object of one and only one reservoir_fluid_system. geologic_age_classification Each reservoir_fluid_system may classified by one or more geologic_age_classification. rock_material Each geologic_age_classification may material of one and only one rock_material. geologic_age_classification Each rock_material may classified by one or more geologic_age_classification. geologic_age_classification geologic_feature material_class reservoir_fluid_system rock_material temporal_event temporal_object temporal_period temporal_period_event_boundary temporal_period_period_bndry uncertainty_class