yardangs造句

• Yardangs form by wind erosion of exposed rock layers in a unidirectional wind field.
• The surface has been exposed to wind erosion, forming yardangs and ripple marks.
• A large concentration of mega-yardangs are found near the Tibesti Mountains in the central Sahara.
• In the regions covered by ejection deposits one may find wind lines, dunes, and yardangs.
• Yardangs are formed when the wind-transported material carves the fragile deposits and produces deep furrows.
• The wind has eroded the surface of the formation into a series of linear ridges called yardangs.
• There are many wind-sculpted ridges or yardangs covering many of the surfaces in the Mangala Valles region.
• Yardangs on Mars are typically found in the Amazonis region but the best ones are found in the equatorial region.
• Yardangs on Mars demonstrate that much of the eolian erosion is recent since they are sculpted in young geologic units.
• Yardangs are formed by wind erosion, typically of an originally flat surface formed from areas of harder and softer material.
• A resistant caprock on the top of yardangs has been observed in Viking, Mars Global Surveyor, and HiRISE photos.
• Linear rock ridges alternating with light orange sand deposits cross the image from upper left to lower right; these are called Yardangs by geomorphologists.
• Sculpted landforms, called yardangs, are up to tens of meters high and kilometers long and are forms that have been streamlined by desert winds.
• The wind blows from the north-east at Aorounga, and sand dunes formed between the yardangs are actively migrating to the south-west.
• The resulting pattern of yardangs is therefore a combination of the original rock distribution, and the fluid mechanics of the air flow and resulting pattern of erosion.
• Yardangs come in a large range of sizes, and are divided into three different categories : mega-yardangs, meso-yardangs, and micro-yardangs.
• Yardangs come in a large range of sizes, and are divided into three different categories : mega-yardangs, meso-yardangs, and micro-yardangs.
• Yardangs come in a large range of sizes, and are divided into three different categories : mega-yardangs, meso-yardangs, and micro-yardangs.
• Yardangs come in a large range of sizes, and are divided into three different categories : mega-yardangs, meso-yardangs, and micro-yardangs.
• "' Yardangs "'are common in some regions on Mars, especially in what's called the " Medusae Fossae Formation . " This formation is found in the Amazonis quadrangle and near the equator.