Sedimentary rocks are formed from the accumulation of sediment over time.
沉积岩是由沉积物随时间积累而形成的。
The Grand Canyon is an excellent example of
sedimentary rock layers exposed by erosion.
大峡谷是侵蚀作用暴露沉积岩层的极佳例子。
Fossils are commonly found in
sedimentary rocks, providing evidence of past life.
化石通常在沉积岩中发现,为过去的生命提供了证据。
Sandstone is a type of
sedimentary rock composed mainly of sand-sized grains.
砂岩是一种主要由砂粒大小颗粒组成的沉积岩。
Limestone is a
sedimentary rock that forms from the accumulation of shells and skeletons of marine organisms.
石灰岩是一种沉积岩,由海洋生物的壳和骨骼积累形成。
Deposition of sediment in calm waters leads to the formation of fine-grained
sedimentary rocks like mudstone.
沉积物在平静水域的沉积导致了泥岩等细粒沉积岩的形成。
Sedimentary structures such as cross-bedding can give clues about the environment of deposition.
沉积结构,如交错层理,可以提供沉积环境的线索。
Shale is a fissile
sedimentary rock that splits easily into thin layers.
页岩是一种易分裂成薄层的有裂纹的沉积岩。
The study of
sedimentary rocks helps geologists understand Earth's history and ancient climates.
对沉积岩的研究帮助地质学家了解地球的历史和古代气候。
The process of lithification turns loose sediment into solid
sedimentary rock through compaction and cementation.
石化过程通过压实和胶结将松散的沉积物转化为固态沉积岩。
According to Sun Kai, a CTCE technician on the site, building such a test center was a daunting task as the strata had lots of sedimentary rock formations, while its surface was mainly saline-alkali deserts with an accumulation of thenardite, a sodium sulfate mineral, seen largely in salt lakes and arid regions.
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