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词汇 Pillow structure
分类 英语词汇 英语翻译词典
释义

Pillow structure

英语百科

Pillow lava

(重定向自Pillow structure)
Recently formed pillow lava, off Hawaii
Cross-section of pillow lava near Oamaru, New Zealand
Weathered Archean pillow lava in the Temagami Greenstone Belt of the Canadian Shield
A pillow lava from an ophiolite sequence, Northern Apennines, Italy

Pillow lavas are lavas that contain characteristic pillow-shaped structures that are attributed to the extrusion of the lava under water, or subaqueous extrusion. Pillow lavas in volcanic rock are characterized by thick sequences of discontinuous pillow-shaped masses, commonly up to one metre in diameter. They form the upper part of 'Layer 2' of normal oceanic crust.

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