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地質学

596 件の記事

Sediment deposited by the lake with a hammer for scale.

ミズーラ湖氷河時代に起きた巨大洪水と地形の変遷

ミズーラ湖氷河湖決壊洪水氷河時代モンタナ州
Badlands incised into shale at the foot of the North Caineville Plateau, Utah, within the pass carved by the Fremont River and known as the Blue Gate. G. K. Gilbert studied the landscapes of this area in great detail, forming the observational foundation for many of his studies on geomorphology.[1]

地形学地球表面を形作るダイナミズムの科学

地形学地貌学地表プロセス浸食
Eemian erosion surface in a fossil coral reef on Great Inagua, The Bahamas. Foreground shows corals truncated by erosion; behind the geologist is a post-erosion coral pillar which grew on the surface after sea level rose again.

侵食面の地質学的特性と測定手法自然地形から道路まで

侵食面不整合地質学地形学
Trees showing the presence of creep

土壌クリープ(土壌匍匐)のメカニズムと地表への影響

土壌クリープ土壌匍匐斜面崩壊地質学
Talus at the bottom of Mount Yamnuska, Alberta, Canada

ガレ場(スクリー)とタラスの科学形成メカニズムから生態系まで

ガレ場スクリータラス岩屑
The slump that destroyed Thistle, Utah, by creating an earthen dam that flooded the area

スランプ(地すべり)のメカニズムと種類斜面崩壊の科学

スランプ地すべりマスウェイスティング回転スランプ
Greenland is isostatically depressed by the Greenland ice sheet such that parts of the bedrock surface in the interior are below sea level.

氷河地殻均衡(アイソスタシー)とグリーンランドの地殻変動

氷河地殻均衡アイソスタシー地殻沈降地殻リバウンド
Turbidites are deposited in the deep ocean troughs below the continental shelf, or similar structures in deep lakes, by underwater avalanches which slide down the steep slopes of the continental shelf edge. When the material comes to rest in the ocean trough, it is the sand and other coarse material which settles first followed by mud and eventually the very fine particulate matter. It is this sequence of deposition that creates the Bouma sequences that characterize these rocks.

タービダイトのメカニズムと地質学的意義深海堆積物の構造と形成

タービダイト混濁流ブーマ・シーケンス深海堆積物
Symbol used to represent in situ permeability tests in geotechnical drawings

浸透率(Permeability)の基礎知識多孔質媒体における流体移動のメカニズム

浸透率透水係数多孔質媒体ダルシーの法則
Airy isostasy, in which a constant-density crust floats on a higher-density mantle, and topography is determined by the thickness of the crust.

アイソスタシー(地殻均衡)の仕組みと地球物理学的モデル

アイソスタシー地殻均衡エアリーモデルプラットモデル
Map of the Himalayas (including the Karakoram and Hindu Kush)

ヒマラヤ山脈地球最高峰を形作る地質学的ダイナミズムと自然の驚異

ヒマラヤ山脈エベレストプレートテクトニクスインドプレート
formation of a river anticline

河川背斜とテクトニック・アニュリズム浸食が地殻を押し上げるメカニズム

河川背斜テクトニック・アニュリズム地殻変動アイソスタシー