ログイン
the outermost layer of the Earth, consisting of solid rock and divided into the continental crust and the oceanic crust
地殻, 地球の皮
the process by which soil and rock are gradually destroyed and removed by natural forces such as wind, water, and ice
浸食, 侵食
the scientific study of minerals, their composition, properties, and classification, often involving the analysis of crystal structures and the identification of various mineral species
鉱物学
the branch of geology that focuses on the study of rocks, their classification, composition, origin, and the processes involved in their formation
岩石学
the scientific study of landforms, their origin, development, and classification, often examining the processes that shape the Earth's surface, such as erosion, deposition, and tectonic activity
地形学
a tapering, icicle-like mineral formation hanging from the roof of a cave or underground structure, typically composed of calcium carbonate deposited by dripping water containing dissolved minerals
鍾乳石
a cone-shaped mineral formation rising from the floor of a cave or underground structure, formed by the deposition of minerals from dripping water containing dissolved substances
鍾乳石, コーン状の鉱物生成物
a supercontinent that existed during the late Paleozoic and early Mesozoic eras, comprising most of Earth's landmasses fused together before breaking apart into the continents we recognize today
パンゲア
an ancient supercontinent that included South America, Africa, Antarctica, Australia, the Indian subcontinent, and the Arabian Peninsula
ゴンドワナランド, ゴンドワナ
a hypothetical ancient supercontinent that existed from the late Precambrian to the Jurassic period, comprising the landmasses of present-day North America, Europe, Asia, and parts of Antarctica, before it began to break apart
ローラシア
the total amount of water on Earth, including oceans, seas, lakes, rivers, groundwater, and atmospheric water vapor
水圏, ハイドロスフェア
a principle in geology stating that in a sequence of undisturbed sedimentary rock layers, the youngest rocks are at the top, and the oldest rocks are at the bottom, helping determine the relative ages of geological formations
重ね合わせの原則
a visible exposure of rock or geological strata at the Earth's surface, often occurring on hillsides, cliffs, or other elevated areas, providing insight into the underlying geological structure
露頭, 岩石露出
solid rock beneath surface materials, forming the Earth's crust foundation
基盤岩, 母岩
the region of the Earth's interior, lying beneath the crust and extending to the outer core, composed of solid rock that can deform and flow over geological time scales
マントル
