 | | Book (edition) | | within the city limits, but also to the surrounding region. In this edition of the Thesaurus, names of cities...newly added are followed by the word “region”; e.g., Stripa region. Names of materials, when used as GeoRef... a. Geographic Coordinates peridot BA olivine group nesosilicates orthosilicates silicates BT minerals...(BT-NT) relationship is that of a group to an individual in the group, e.g., BT minerals to NT silicates...of the specific minerals in the olivine group, the olivine group is one of several mineral groups in the |  | | Book (edition) | | commonly have several variants, such as Great Smoky Group, Great Smoky Conglomerate, Great Smoky Formation...If used on level 1, Term set options are: rock group (carbonate rocks, chemi¬ cally precipitated rocks...the city limits, but also to the sur¬ rounding region. Terms for materials in GeoRef, for example, "iron...was adopted. Broader Term (BT, BX, BA, BZ) - A group of which the Term is a member or an area in which...Term (NT, NX, NA, NZ) - A specific mem¬ ber of a group which is represented by the Term or an area within |
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