archaeozoic, archaeozoic era, archeozoic, archeozoic era, preoterozoic era, proterozoic

proterozoic, paleozoic, archaean, ordovician, eocene, archean, mesozoic, palaeozoic, paleocene, limestones, cambrian period, neogene, devonian, triassic, schists, basalts, depositional, hornblende, paleogene, sedimentary, pliocene, cretaceous, noachian, silicic, gneiss, dolomites, lavas, cenozoic, permian period, orogenic, trilobites, siderite, phyllosilicate, igneous, sedimentary rock, alkalic, amphibolite, granites, igneous rock, pyroxenite, porphyry, volcanism, diabase, syenite, silurian, jurassic period, pleistocene, andesite, gabbro, upper paleolithic, argillite, clastic, interglacial, crinoids, carboniferous, anorthosite, stratiform, glaciation, batholith, stratigraphy, halite, cretaceous period, magmas, siltstone, triassic period, greisen, hornfels, geochronology, granodiorite, greywacke, brachiopods, supercontinent, miocene, peridotite, breccia, tertiary period, dacite, evaporite, craton, fossils, pelitic, cenozoic era, hydrothermal, chalcedony, sulphides, mudstone, eclogite, devonian period, oligocene, diorite, olivine, graben, muscovite, hadean, eudialyte, faunas, monzonite, haematite, carboniferous period, detrital, phanerozoic, argillaceous, cambrian, tertiary, jurassic, permian, neolithic, palaeolithic, neoproterozoic, metamorphic

archaeozoic, archeozoic, craton, proterozoic

geological time, geologic time

precambrian period