| 单词 | siltstone |
| 释义 | BETA Examples ofsiltstoneDictionary> Examples ofsiltstone siltstoneisn’t in the Cambridge Dictionary yet. You can help! Add a definition The lower c. 20 m obviously show a dominating sequence of siltstones that are occasionally flaser-bedded. From theCambridge English Corpus Again, flaser-bedded siltstones and finegrained sandstones alternate rhythmically. From theCambridge English Corpus In the field it appears to be quite similar to maroon mottledsiltstoneexcept for its clayey nature. From theCambridge English Corpus The trackways were found in the laminated fine sands and siltstones at the tops of fining-upwards sequences. From theCambridge English Corpus Beds of dark grey, centimetre-bedded very fine sandstone andsiltstoneoccur in units a few tens of centimetres thick. From theCambridge English Corpus Numerous thin sandstone beds (in general about 10 cm thick) are separated by thicker units of flaser-bedded siltstones and mudstones. From theCambridge English Corpus The volcaniclasticsiltstoneis composed of crystals (olivine, pyroxene, quartz), glass (globules and irregularly shaped shards) and rock fragments. From theCambridge English Corpus Interbedded thin fine-grained sandstone andsiltstonelayers are laminated and wavy in nature. From theCambridge English Corpus The siltstones commonly contain detrital white mica flakes that are generally lacking in the sandstones, and are possibly of distal continental origin. From theCambridge English Corpus Siltstoneoccurs in structureless or horizontally laminated beds 0.5 to 1.5 m thick. From theCambridge English Corpus Thissiltstoneunit lies upon a conspicuous erosion surface highlighted by angular chips of phosphatized pebbles and ammonites. From theCambridge English Corpus The sections also contain subordinate amounts ofsiltstone, limestone and dolostone. From theCambridge English Corpus Thesiltstonefacies is composed of two subfacies:siltstoneand sandysiltstone. From theCambridge English Corpus The coarse-grained lower part is chiefly composed of cross-bedded sandstone and the finer-grained upper part includes rippled silty sandstone and bioturbated sandysiltstone. From theCambridge English Corpus The host lithologies are mudstones, siltstones, minor black limestones and subordinate sandstones, with numerous disturbed beds composed of any or all of these lithologies. From theCambridge English Corpus The formation consists of fine-grained, thinly bedded, silty sandstones and siltstones which were deposited in a turbidite setting. From theCambridge English Corpus The sequence consists of a great variety of cross-bedded sandstones, conglomerates, siltstones, shales and rare oolitic intercalations. From theCambridge English Corpus There are black mudstones interbedded with the siltstones. From theCambridge English Corpus Where bioturbation is absent, the finer units consist of millimetre-scale bedding betweensiltstoneand fine-grained sandstone. From theCambridge English Corpus These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
| 随便看 |
|
英汉词典包含213609条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。